KAC-1052 - MAINTENANCE MANUAL 006-15640-0001_1

7/27/2019 KAC-1052 - MAINTENANCE MANUAL 006-15640-0001_1

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COMPONENT MAINTENANCE MANUAL

KAC 1052Antenna Coupler

MANUAL NUMBER 006 15640 0001


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WARNING

Prior to export of this document, review for export license requirement is needed.

COPYRIGHT NOTICE


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N______________________________________________________________________

HoneywellAerospace Electronic Systems23500 West 105th StreetOlathe, Kansas 66061

Component Maintenance Manualwith illustrated parts list

KAC 1052 Antenna Coupler

Part No. Manufacturer

064-01074-0101 Honeywell


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N

NOTE

IF ANY UNUSUAL OR SPECIAL SERVICE PROBLEMS ARISE,CONTACT HONEYWELL CUSTOMER SUPPORT DEPARTMENT.

PROPRIETARY NOTICE

This document contains proprietary information and


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NCOMPONENT MAINTENANCE MANUAL

KAC 1052 Antenna Coupler / Part No. 064-01074-0101

TRANSMITTAL INFORMATION

TO HOLDERS OF: HOLDERS OF COMPONENT MAINTENANCE MANUAL,PUB. NO. 006-15640-0000, KAC 1052 ANTENNA COUPLER(PART NO. 064-01074-0101).

REVISION NO. 001, DATED Jan/2004

Revision History

Table of Revisions

Highlights

This revision contains these changes:

Table of Highlights

Revision No. Revision Date Date Put in Manual By

1 Jan/2004 (full revison of manual)

Task/Page Description of Change Effectivity

(various) Corrected clerical errors.


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Task/Page Description of Change Effectivity


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RECORD OF REVISIONS

For each revision, put the revised pages in your manual and discard the supersededpages. Write the revision number and date, the date put in the manual, and theincorporators initials in the applicable columns on the Record of Revisions.

RevisionNumber

RevisionDate

Date PutIn Manual By

RevisionNumber

RevisionDate

Date PutIn Manual By

1 01/04 (full rev.)


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RevisionNumber RevisionDate Date PutIn Manual By RevisionNumber RevisionDate Date PutIn Manual By


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RECORD OF TEMPORARY REVISIONS

Instructions on each page of a temporary revision tell you where to put the pages in yourmanual. Remove temporary revision pages only when discard instructions are given. Foreach temporary revision, put the applicable data in the record columns on this page.

Temp Rev. No. Status Task Location


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Temp Rev. No. Status Task Location


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ATANumber

ManualRevisionNumber

ManualRevisionDate

Coverage


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LIST OF EFFECTIVE PAGES

SUBHEADING AND PAGE DATE SUBHEADING AND PAGE DATE

TitleT-1 Jan/2004T-2 Jan/2004

Transmittal Information

TI-1 Jan/2004TI-2 Jan/2004

Record of RevisionsRR-1 Jan/2004RR-2 Jan/2004

Record of Temporary RevisionsRTR-1 Jan/2004RTR-2 Jan/2004

Service Bulletin ListSBL-1 Jan/2004SBL-2 Jan/2004

List of Effective PagesLEP-1 Jan/2004LEP-2 Jan/2004LEP-3 Jan/2004

LEP-4 BlankTable of ContentsTOC-1 Jan/2004TOC-2 Jan/2004TOC-3 Jan/2004TOC-4 Jan/2004

List of FiguresLOF-1 Jan/2004

LOF-2 BlankList of Tables

LOT-1 Jan/2004LOT-2 Blank

IntroductionINTRO-1 Jan/2004INTRO-2 Jan/2004INTRO-3 Jan/2004

INTRO-4 Jan/2004INTRO-5 Jan/2004INTRO-6 Blank

Description and Operation1 Jan/20042 Jan/20043 Jan/20044 Jan/20045 Jan/20046 Jan/20047 Jan/20048 Blank

F 9 Jan/200410 Blank11 Jan/2004

12 Jan/200413 Jan/200414 Jan/200415 Jan/200416 Blank

F 17 Jan/200418 Blank

F 19 Jan/2004

20 Blank21 Jan/200422 Jan/200423 Jan/200424 Jan/200425 Jan/2004


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Description and Operation (cont)28 Jan/200429 Jan/200430 Jan/2004

Testing and Fault Isolation1001 Jan/20041002 Jan/20041003 Jan/20041004 Jan/20041005 Jan/20041006 Jan/20041007 Jan/20041008 Jan/20041009 Jan/20041010 Jan/2004

Schematics and Wiring Diagrams2001 Jan/20042002 Blank

Disassembly

3001 Jan/20043002 Jan/20043003 Jan/20043004 Blank

Cleaning4001 Jan/20044002 Jan/20044003 Jan/2004

4004 Jan/20044005 Jan/20044006 Blank

Check5001 Jan/20045002 Jan/2004

Repair6001 Jan/20046002 Jan/2004

Assembly

7001 Jan/20047002 Jan/20047003 Jan/20047004 Jan/20047005 Jan/20047006 Jan/20047007 Jan/20047008 Blank

Fits and Clearances8001 Jan/20048002 Blank

Special Tools, Fixtures, and Equipment9001 Jan/20049002 Jan/2004

F 9003 Jan/2004

9004 BlankSpecial Procedures11001 Jan/200411002 Blank

Removal12001 Jan/200412002 Blank

Installation

13001 Jan/200413002 Blank

Servicing14001 Jan/200414002 Jan/2004

Storage


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Rework16001 Jan/200416002 Blank

Illustrated Parts List

10001 Jan/200410002 Jan/200410003 Jan/200410004 Blank

F 10005 Jan/200410006 Blank

F 10007 Jan/200410008 Blank


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Blank Page


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TABLE OF CONTENTSDESCRIPTON PAGE

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11. How to Use This Manual (Task 23-10-06-99C-801-A01) . . . . . . . . . . . . . . . . . . . .1

A. General Information (Subtask 23-10-06-99F-001-A01) . . . . . . . . . . . . . . . . . . .1B. Acronyms (Subtask 23-10-06-99F-002-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . .3

DESCRIPTION AND OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11. Physical Description (Task 23-10-87-801-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

A. General (Subtask 23-10-07-87-001-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

B. Packaging (Subtask 23-10-07-87-002-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5(1) General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

C. Chassis (Subtask 23-10-07-87-003-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7D. Switches and Knobs (Subtask 23-10-07-87-004-A01) . . . . . . . . . . . . . . . . . . . . 7E. Connector (Subtask 23-10-07-87-005-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

(1) RF Output Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7(2) P10521 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7(3) P10522 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

F. Cooling (Subtask 23-10-07-87-006-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7G. Internal Connections (Subtask 23-10-07-87-007-A01) . . . . . . . . . . . . . . . . . . . 7H. Major Subassemblies (Subtask 23-10-07-87-008-A01) . . . . . . . . . . . . . . . . . .11

(1) PS and Interface Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11(2) CPLR Control Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11(3) Sensor and Relay Drive Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . .11(4) Shunt Capacitor Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11(5) Series Capacitor Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11(6) Coil Board Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

2. Functional Description (Task 23-10-07-87-802-A01) . . . . . . . . . . . . . . . . . . . . . . 12A. General (Subtask 23-10-07-87-009-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12B. Theory of Operation (Subtask 23-10-07-87-010-A01) . . . . . . . . . . . . . . . . . . .12

(1) General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12(2) RF Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14(3) Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

(4) Bridging Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23(5) CPLR Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

(6)Power Supply and Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26(7) Interface Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

TESTING AND FAULT ISOLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10011. How to Use (Task 23-10-07-99C-802-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . .1001


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TABLE OF CONTENTS (cont)DESCRIPTON PAGE

3. Procedure (Task 23-10-06-75-802-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1001A. Shop Fault Isolation (Subtask 23-10-07-81-001-A01) . . . . . . . . . . . . . . . . .1001B. Bench-Test Harness Return to Service Test Solution

(Subtask 23-10-07-75-001-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004(1) Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004(2) Preliminary Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004(3) Antenna Coupler Tuning Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1004

(4) High-SWR Retune Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1007(5) Bridging Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1007

C. KPA 1052 Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10094. Automatic Test Requirements (Task 23-10-07-75-803-A01) . . . . . . . . . . . . . .1009

A. General (Subtask 23-10-07-75-004-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 1009B. Equipment and Materials (Subtask 23-10-07-75-005-A01) . . . . . . . . . . . . .1009C. HF ATE System Test Solution (Subtask 23-10-07-75-006-A01) . . . . . . . . .1009

SCHEMATICS AND WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2001

DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30011. Task (Task 23-10-07-99C-803-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3001

A. General (subtask 23-10-07-99F-006-A01) . . . . . . . . . . . . . . . . . . . . . . . . . .30012. Equipment and Materials (Task 23-10-07-94-802-A01) . . . . . . . . . . . . . . . . . .3001

A. General (Subtask 23-10-07-94-002-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30013. Procedure (Task 23-10-07-03-801-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3001

A. General (Subtask 23-10-07-03-001-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3001(1) Side Plates (2) MPBC36547A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3002(2) Series Cap Board (26) MDLW11386D . . . . . . . . . . . . . . . . . . . . . . . . . .3002(3) Shunt Cap Board (25) MDLW11385F . . . . . . . . . . . . . . . . . . . . . . . . . . .3002(4) Coil Board (27) MDLW11390E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3002(5) Sensor and Relay Drive Board (24) MDCW10907D . . . . . . . . . . . . . . . .3003(6) Shields (29) MPSC30332A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3003(7) CPLR Control Board (23) MDLW11428 . . . . . . . . . . . . . . . . . . . . . . . . .3003(8) Power Supply and Interface Board (22) MDBW10546B . . . . . . . . . . . . .3003

CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40011. Task (Task 23-10-06-99C-804-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4001A. General (Subtask 23-10-06-99F-007-A01) . . . . . . . . . . . . . . . . . . . . . . . . .4001

2. Equipment and Materials (Task 23-10-06-94-803-A01) . . . . . . . . . . . . . . . . . .4001A. General (Subtask 23-10-06-94-003-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4001

3. Procedure (Task 23-10-06-16-801-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4002


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CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50011. Task (Task 23-10-07-99C-805-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5001

A. General (Subtask 23-10-07-99F-008-A01) . . . . . . . . . . . . . . . . . . . . . . . . .50012. Equipment and Materials (Task 23-10-07-94-804-A01) . . . . . . . . . . . . . . . . . .5001


A. General (Subtask 23-10-07-21-001-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5001

(1) Structural Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5001(2) Electrical Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5002

REPAIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60011. Task (Task 23-10-06-99C-806-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6001

A. General (Subtask 23-10-06-99F-009-A01) . . . . . . . . . . . . . . . . . . . . . . . . .60012. Equipment and Material (Task 23-10-06-94-805-A01) . . . . . . . . . . . . . . . . . . .6001


A. General (Subtask 23-10-06-35-001-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6001(1) General Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6002(2) Detailed Repair Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6002

ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70011. Task (Task 23-10-07-99C-807-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7001

A. General (Subtask 23-10-07-99F-010-A01) . . . . . . . . . . . . . . . . . . . . . . . . .7001B. Staking Compounds, Sealants, Thermal Compounds,

and Lubricants to be Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7001(Subtask 23-10-07-99F-011-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7001

C. Screw and Nut Torque Values (Subtask 23-10-07-99F-012-A01) . . . . . . . .70022. Equipment and Materials (Task 23-10-07-94-806-A01) . . . . . . . . . . . . . . . . . .7003

A General (Subtask 23-10-07-94-006-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 70033. Procedure (Task 23-10-07-43-801-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7003

A. General (Subtask 23-10-07-43-001-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 7003(1) PS and Interface Board (22) MDBW10546B . . . . . . . . . . . . . . . . . . . . .7003

(2) CPLR Control Board (23) MDLW11428 . . . . . . . . . . . . . . . . . . . . . . . . .7004(3) Shield Assembly (29) MPSC30332A . . . . . . . . . . . . . . . . . . . . . . . . . . .7004(4) Sensor and Relay Drive Board (24) MDCW10907D . . . . . . . . . . . . . . . .7004(5) Coil Board (27) MDLW11390E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7004(6) Shunt Cap Board (25) MDLW11385F . . . . . . . . . . . . . . . . . . . . . . . . . . .7005(7) Series Cap Board (26) MDLW11386D . . . . . . . . . . . . . . . . . . . . . . . . . .7005


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SPECIAL TOOLS, FIXTURES AND EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . 90011. Task (Task 23-10-06-99C-808-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9001

A. General (Subtask 23-10-06-99F-011-A01) . . . . . . . . . . . . . . . . . . . . . . . . .90012. Return to Service Testing (Task 23-10-06-94-807-A01) . . . . . . . . . . . . . . . . . .9001

A. General (Subtask 23-10-06-94-007-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . 9001SPECIAL PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11001REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12001

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13001SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14001STORAGE (INCLUDING TRANSPORTATION) . . . . . . . . . . . . . . . . . . . . . . . . . . 150011. Storage (Task 23-10-06-55-801-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15001

A. Storage After Assembly (Subtask 23-10-06-55-001-A01) . . . . . . . . . . . . .15001REWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16001ILLUSTRATED PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100011. Introduction (Task 23-10-07-99C-809-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . 10001

A. General (Subtask 23-10-07-99F-014-A01) . . . . . . . . . . . . . . . . . . . . . . . .10001B. Parts Listing (Subtask 23-10-07-99F-015-A01) . . . . . . . . . . . . . . . . . . . . .10001

(1) FIND NO. Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10001(2) PART NUMBER Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10001(3) DESCRIPTION Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10001(4) QTY Column . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10001


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LIST OF FIGURESDESCRIPTION PAGE

Figure 1 KAC 1052 Antenna Coupler (Task 23-10-07-99B-801-A01) . . . . . . . . . . . . . 1Figure 2 KAC 1052 Subassembly Locations (Task 23-10-07-99B-802-A01) . . . . . . .6Figure 3 KAC 1052 Internal Connections (Task 23-10-07-99B-803-A01) . . . . . . . . . . 9Figure 4 Simplified Block Diagram (Task 23-10-07-99B-804-A01) . . . . . . . . . . . . . .13Figure 5 Matching Network Element Selection (Task 23-10-07-99B-805-A01) . . . . .14Figure 6 RF Matching Network (Task 23-10-07-99B-806-A01) . . . . . . . . . . . . . . . . .15Figure 7 Impedance Sensors Block Diagram (Task 23-10-07-99B-807-A01) . . . . . .21

Figure 8 Bridging Amplifier Block Diagram (Task 23-10-07-99B-808-A01) . . . . . . . . 23Figure 9 CPLR Control Block Diagram (Task 23-10-07-99B-809-A01) . . . . . . . . . . . 24Figure 10 Power Supply and Interface Block Diagram

(Task 23-10-07-99B-810-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Figure 11 PS and Interface Surge Protection Circuits

(Task 23-10-07-99B-811-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Figure 1001 KAC 1052 Test Setup (Task 23-10-07-99B-812-A01) . . . . . . . . . . . .1005Figure 1002 KAC 1052 Bridging Amplifier Test Setup

(Task 23-10-07-99B-813-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1008Figure 7001 Side Plate Installation (Task 23-10-07-99B-814-A01) . . . . . . . . . . . .7006Figure 9001 HF ATE System (Task 23-10-06-99B-815-A01) . . . . . . . . . . . . . . . .9002Figure 9002 KHF 1050 System Bench-Test Harness

(Task 23-10-06-99B-816-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9003Figure 10001 KAC 1052 Final Assembly (Task 23-10-07-99B-816-A01) . . . . . . . 1005Figure 10001 KAC 1052 Final Assembly (Task 23-10-07-99B-816-A01) . . . . . . . 1007


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LIST OF TABLESDESCRIPTION PAGE

Table INTRO-1. Acronyms (Task 23-10-07-99A-801-A01) . . . . . . . . . . . . . . . . . . . . . . 5Table 1 Leading Particulars (Task 23-10-07-99A-803-A01) . . . . . . . . . . . . . . . . . . . . 3Table 2 KAC 1052 Subassemblies (Task 23-10-07-99A-804-A01) . . . . . . . . . . . . . . . 5Table 3 Circuit Configurations (Task 23-10-07-99A-805-A01) . . . . . . . . . . . . . . . . . .17Table 4 Interface Signal Description J10521 (Task 23-10-07-99A-806-A01) . . . . . .29Table 5 Interface Signal Description J10522 (Task 23-10-07-99A-807-A01) . . . . . .30Table 1001 KAC 1052 Fault Isolation (Task 23-10-07-99A-808-A01) . . . . . . . . . . 1002

Table 1002 KAC 1052 Pressure Indication (Task 23-10-07-99A-809-A01) . . . . . . 1003Table 4001 Recommended Cleaning Materials (Task 23-10-07-99A-810-A01) . . 4002Table 7001 Sealants, Staking Compounds, Thermal Compounds,

and Lubricants (Task 23-10-07--99A-809-A01) . . . . . . . . . . . . . . . .7002Table 7002 Typical Screw and Nut Torque Values

(Task 23-10-07-99A-810-A01) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7002Table 10001 KAC 1052 Coupler (Task 23-10-07-99A-811-A01) . . . . . . . . . . . . .10002


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KRX 1052 Antenna Coupler / Part No. 064-01074-0101

INTRODUCTION

1. How to Use This Manual (Task 23-10-06-99C-801-A01)

A. General Information (Subtask 23-10-06-99F-001-A01)

(1) This publication is written to the Air Transport Association of America (ATA)Spec 2200 and will be revised as necessary to show current information.

(2) All front matter consists of a title page that displays the equipment name andpart number, and the ATA and document numbers assigned to the manual, aRECORD OF REVISIONS page for recording revision incorporation, aRECORD OF TEMPORARY REVISIONS page for recording temporaryrevision (yellow page) insertion prior to formal revision, a SERVICE BULLETINLISTthat includes a brief description of the reason for the bulletin, and the datethat Service Bulletin information was incorporated into the manual, a TABLE

OF CONTENTS, a LIST OF FIGURES and a LIST OF TABLES.

(3) DESCRIPTION AND OPERATIONsection contains an equipment illustration,table of leading particulars, a general description, and a theory of operation forthe electronic assemblies to assist in understanding the circuitry for faultisolation purposes.

(4) TESTING AND FAULT ISOLATION section contains a functional test to

enable maintenance personnel to assess the operational condition of theequipment, calibration procedures for electronic or mechanical adjustment asnecessary, troubleshooting guide to assist in fault isolation, and completeelectrical wiring and schematic diagrams.

(5) SCHEMATICS AND WIRING DIAGRAMS section contains completeelectrical wiring and schematic diagrams.

(6) DISASSEMBLY section contains procedures for disassembling theequipment to the part replacement level. Complete overhaul procedures are notprovided. Specific procedures are intended to be a supplement to, and arecorrelated to, the Illustrated Parts List (IPL).


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(9) REPAIR section contains specific instructions for repairing areas of the

equipment not specifically covered in the ASSEMBLY section.

(10)ASSEMBLY section contains all specific instructions necessary for partreplacement and to supplement the IPL. Special instructions for use ofadhesives, wires, heat sink compounds, etc., not covered in the IPL, areincluded. Special assembly sequence requirements, as applicable, areprovided.

(11)FITS AND CLEARANCES section contains a list of dimensional values,torques, etc., if required during assembly. These parameters are also specifiedin the ASSEMBLY section where applicable.

(12)SPECIAL TOOLS, FIXTURES AND EQUIPMENT section contains a list of allequipment required to perform procedures specified in the other manualsections.

(13)STORAGE (INCLUDING TRANSPORTATION) section contains storage andtransportation instructions.

(14)ILLUSTRATED PARTS LIST section contains illustrations and parts lists forall equipment assemblies, subassemblies and components. The illustrationsand parts lists are item-number keyed for location of parts, and list quantities,part numbers, and part descriptions. An introduction to the IPL relates how it is

used, definitions used, equipment designators and alphanumerical indices forparts.


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B. Acronyms (Subtask 23-10-06-99F-002-A01)

TERM DEFINITION

ACP Antenna Coupler (or equivalent test panel)

ADLP Airborne Data Link Processor

AGC Automatic Gain Control

ALC Automatic Level ControlAME Amplitude Modulated Equivalent

ASCII American Standard Code for Information Interchange

ATE Automatic Test Equipment

A3A Single sideband reduced carrier voice emission (R3E)

A3H Single sideband full carrier emission (H3E, H3D)A3J Single sideband suppressed carrier emission (J3E, J3D)

BCD Binary Coded Decimal

BIT Built-In Test

BITE Built-In Test Equipment

BNC RF connector typeBPS Bits Per Second

C Celcius

CCITT Consultive Committee for International Telegraphy and Telephony (ITU)

CMC Central Maintenance Computer

CMU Communication Management UnitCOM Communication

COMM Communication

CW Continuous Wave (unmodulated)


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EMI ElectroMagnetic Interference

Fc carrier Frequency

FM Frequency Modulated

GHz Gigahertz (109)

HF High Frequency (2-30 MHz)HFDL High Frequency Data Link

Hg Mercury (chemical element)

HIRF High Intensity Radiated Field

H3D Single sideband full carrier data emission

H3E Single sideband full carrier voice emission (formerly A3H)

ICAO International Civil Aviation Organization

IF Intermediate Frequency

ITU International Telecommunications Union

IMD Inter Modulation Distortion

j The square root of -1

J3D Single sideband suppressed carrier data emission

J3E Single sideband suppressed carrier data emission (formerly A3J)

K Kelvin

KBPS KiloBits Per Second

KHzKilohertz (10

3

)KPN King Part Number

LSB Least Significant Bit

LSB Lower SideBand emission

TERM DEFINITION


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MPS Minimum Performance Standard

MSB Most Significant Bit

NLT Not Less Than

NMT Not More Than

PEP Peak Envelope Power

pF Picofarad (10-12)

PC Personal Computer

PTT Push To Talk (or Transmit)

PTT German Post, Telephone and Telegraph Authority

RAM Random Access Memory

RF Radio Frequency

R3E Single sideband reduced carrier voice emission (formerly A3A)

RX/EX Receiver/Exciter

SDI Source/Destination Identifier

SBH Syllabic squelch for a high signal environment

SBL Syllabic squelch for a low signal environment

SELCAL Selective Calling

SINAD Signal including noise and distortion

SQH Signal to noise squelch for a high noise environment

SQL Signal strength squelch for a low noise and high signal environment

SSB Single Sideband

H Microhenry (10-6)

USB Upper Sideband emission

TERM DEFINITION


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COMPONENT MAINTENANCE MANUALKAC 1052 Antenna Coupler / Part No. 064-01074-0101

PAGE 9

23-10-07 Jan/2004Use or disclosure of information on this page is subject to the restrictions in the proprietary notice of this document.

Figure 3 KAC 1052 Internal Connections (Task 23-10-07-99B-803-A01)Dwg. No. SDNFC5037L

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DESCRIPTION AND OPERATION

1. Physical Description (Task 23-10-87-801-A01)

A. General (Subtask 23-10-07-87-001-A01)

(1) The KAC 1052 Antenna Coupler automatically tunes the 50 ohm coaxial outputof the 200 Watt PEP Transmitter Power Amplifier to the aircraft antennaimpedance for each of the operating frequencies actually used by the KHF 1050

System (also known as Primus HF 1050). The network configurations for eachtune are stored in non-volatile memory so that once the KAC 1052 is tuned into the aircraft antenna and particular operating frequency, it will remember thattune. In the event that the antenna impedance changes, the KAC 1052 willretune to the new impedance. An additional use of the coupler is to provide agood signal from the antenna to the KRX 1053 in the receive mode.


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Each tune that is remembered is also utilized on other nearby frequencies. For

example, the tuning values determined at 6550.0 kHz will be utilized from6547.4 kHz through 6553.8 kHz. If a frequency is selected beyond this range,the KAC 1052 will find a new tune. In general, the same tune will be used overa range of 0.1% of the operating frequency. At an operating frequency of 3000.0kHz, the same tune will be used over a range of approximately 3 kHz. At 22000kHz, the same tune will be used over a range of approximately 22 kHz.

A variety of tuning networks are available in the KAC 1052, to allow the antenna

coupler to match most commonly used aircraft HF antennas. Sensor circuitryand a CPU (microprocessor) internal to the KAC 1052 guide the antennacoupler to selection of a network that provides a complementary match for theimpedance of the antenna. The same CPU circuitry communicates with theKRX 1053 Receiver/Exciter and the KPA 1052 Power Amplifier. The KAC 1052also provides a communication path between the KRX 1053 and the KPA 1052.

With some antenna configurations, high RF voltages can be developed at

certain operating frequencies. In order to prevent this high voltage from arcingover internally at high altitudes, the KAC 1052 is pressurized with nitrogen. Inthe event that nitrogen should leak out of the coupler, the KAC 1052 firstgenerates a low pressure warning message that is sent to the controller. Anadditional drop in pressure will result in a low pressure fault condition, which willforce the output power of the KHF 1050 system to be reduced to 50 W untilpressure is restored.

The KAC 1052 antenna coupler has an internal bridging amplifier that is usedin receive mode when the antenna is not tuned. The bridging amplifier is alsoused in a dual configuration.

In a KHF 1050 dual-system configuration, both systems share one antenna. Ifthe two systems are tuned to different frequencies, the strongest reception isnormally realized on the primary system (which is defined as the last system to

have transmitted) because the antenna is tuned to that frequency. Thesecondary system (the opposite system from the primary system) will generallyrealize somewhat weaker reception. To help minimize the effects of this weakerreception, the bridging amplifier built into the KAC 1052 is automaticallyswitched in to help amplify the signal received by the secondary system.

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The KHF 1050 does not require any external accessories for dual-system

operation, other than a specifically fabricated coaxial cable to allowinterconnection of the two KAC 1052 Antenna Couplers to the antenna.

Six printed circuit assemblies are used in the KAC 1052. The matchingnetworks reside on three printed circuit assemblies; the Shunt Cap Board, theSeries Cap Board and the Coil Board. A Sensor and Relay Driver Boardmonitors the impedance of the network and provides relay drive current. TheCoupler Control Board contains the CPU that controls the operation of the KAC

1052 and the KPA 1052. Interface circuitry to the KPA 1052 and KRX 1053 islocated on the PS and Interface Board, along with the KAC 1052 power supply.

The mechanical configuration of the KAC 1052 Antenna Coupler is mainlycomposed of chassis assembly, two side plates, shield assembly and mountingbrackets.

An HN connector on the back of the unit provides for connection to an antenna,

while connectors for interface with the rest of the KHF 1050 system are on thefront of the unit.

CHARACTERISTIC DESCRIPTION

Overall Dimensions 13.6 L x 4.75 W x 7.24 H in. 434 cu. in.

Weight (approximate) 16.4 lbs.

Temperature Range:

Operating -55C to +70C

Storage (See STORAGE (INCLUDINGTRANSPORTATION))

Altitude: +55,000 ft.

Power Requirements: +27.5Vdc @ 3A

Connectors: 37 Pin (J10521) and 9 Pin (J10522) D-Subs N


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CHARACTERISTIC DESCRIPTION

TSO: C31d, C32d,DO-160D Env. cat .[A2F2X]BAB[RS]EXXXXXA[BZ]A[BZ]A[TT]L[A3E3]XAA

Applicable Document: RTCA DO-160D, DO-163FCC Part 80, 87 and 90

Power Capability: 200 Watts PEP.

VSWR: Less than 1.5:1 typical, 3:1 maximum

Antenna Tuning Time: 50 msec (nominal) for previously tuned freq.2 to 10 sec (nominal) if not previously tuned.

Antenna Matching Capability:

Wire Antenna: Grounded Wire Antenna:

10-25 feet grounded (55,000 ft maxALT)

25-30 feet may be grounded orungrounded (30,000 ft max ALT ifungrounded)

NOTE: Altitude limits not applicable ifKAC 1052 is mounted in apressurized environment.

Internal protection: High SWR due to change in antennaimpedance will force a retune. An internalbleeder resister provides a static dischargepath to ground.

Should the coupler not be able to tune theantenna at a given frequency, a tune faultwill result after the coupler has attempteddifferent network configurations to tune the N


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B. Packaging (Subtask 23-10-07-87-002-A01)

(1) General

Two side panels attach to a welded chassis assembly. Seals between the sidepanels and the chassis maintain the internal pressure. Removal of the sidepanels allows access to the printed circuit assemblies.

Internal to the KAC 1052 is a shield assembly consisting of a shield cap, shield

plate and two supports. This shield isolates the microprocessor circuitry fromthe matching network RF circuitry. The shield assembly is located between theCoupler Control Assembly and the Sensor and Relay Driver Assembly.Brackets attached to each end of the KAC 1052 allow for mounting the unit toa mounting tray in the aircraft.

A 37-pin D-shell connector is located on the front of the unit to allow forinterfacing with the rest of the KHF 1050 system. The front of the KAC 1052

also includes a BNC connector for connection to the KPA 1052, and a 9-pinD-shell connector that is used for ground maintenance purposes.

Both a fill valve and a pressure relief valve are also located on the front panel.On the rear of the unit is an HN connector for connection to the antenna, and aground post. Additionally, a vent plug is mounted on the rear of the KAC 1052to enable the purging of air from the unit as it is pressurized.

The KPA 1052 amplifies the KTR 1053 exciter output to 200 Watts PEP or 50Watts of carrier power in AM. This amplified signal is routed through the KAC1052, which matches the various impedances of the antenna to the 50 ohmoutput of the transmitter. The received signals, from the antenna, pass throughthe antenna coupler to the KTR 1053.

Nomenclature Item Number Part No.

Power Supply and Interface Board 22 DEXX-CBL-103

Coupler Controller Board 23 DHXX-CDC-1083B

Sensor and Relay Drive Board 24 DHXX-CCN-338 N


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C. Chassis (Subtask 23-10-07-87-003-A01)

(1) The chassis assembly serves as a support for the printed circuit boards. Allconnectors used for external interface also mount to the chassis. The ShuntCap Board, Series Cap Board and Coil Board mount directly to tabs on thechassis, whereas the Sensor and Relay Driver Board, Coupler Control Boardand the PS and Interface Board mount to the chassis assembly via standoffs.

The side panels, as well as all connectors and valves that penetrate the chassis

assembly, are sealed to retain the nitrogen pressure inside the unit. A groundstud is pressed into the chassis assembly to provide a return path for antennaRF current.

D. Switches and Knobs (Subtask 23-10-07-87-004-A01)

(1) The KAC 1052 does not contain any switches or knobs.

E. Connector (Subtask 23-10-07-87-005-A01)

(1) RF Output Connector

The HN-type RF output connector, for connection to the antenna, is on the rearsurface of the antenna coupler.

(2) P10521

A 37-pin D-shell connector, P10521, is located on the front of the unit to allowfor interfacing with the rest of the KHF 1050 system. DC power, along with serialand parallel interfaces to the KRX 1053 and KPA 1052, connect to thisconnector.

(3) P10522

A 9-pin D-shell connector is located on the front of the unit to allow forinterfacing with shop maintenance computers and test functions.

F. Cooling (Subtask 23-10-07-87-006-A01) N


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H. Major Subassemblies (Subtask 23-10-07-87-008-A01)

(1) PS and Interface Board Assembly

The PS and Interface card is located at the front panel and composed of apower supply switching circuit, voltage regulators, voltage-current convertor forAPC, RS422 interface driver and surge protection for interface signals.The card supplies 28V, 12V and 5V DC power to all circuit cards and has allinterface connectors to communicate with other LRUs.

(2) CPLR Control Board Assembly

The Coupler Control Card is located between the PS and Interface card and theShield Assembly and composed of a CPU, CPLD, EEPROM, analog interface,RS232 interface driver, reference voltage generator, pressure sensor,temperature sensor and voltage monitor. The card administers all operations tobe needed and monitoring the state of the Unit.

(3) Sensor and Relay Drive Board Assembly

The Sensor and Relay Drive Card is located between the Shield Assembly andthree matching network boards, and composed of an impedance sensor. Thiscard includes the RF power level detector, 3dB attenuator, relay driver, bridgeamplifier and some of the relays for RF network determination. The card detectsinput impedance and provides them to the Coupler Control, converts serialrelay signals to parallel relay signals and amplifies received signals andprovides to the RX/EX.

(4) Shunt Capacitor Board Assembly

The Shunt Capacitor Board card is located between the Series CapacitorBoard and the Coil Board card and composed of shunt capacitors and relays

constituting the RF networks, arrestor and discharging resistor.

(5) Series Capacitor Board Assembly

The Series Capacitor Board card is located at the right side of the unit andcomposed of series capacitors and relays constituting the RF networks The N

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(6) Coil Board Assembly

The Coil Board card is located at left side of the unit and composed of inductorsand relays constituting the RF networks. The inductors are connected as shuntinductor arm or series inductor arm of the RF networks.

2. Functional Description (Task 23-10-07-87-802-A01)


(1) This section gives the functional description and block diagrams for the KAC1052. Each subsection tells about the function of the shop-replaceable unitsand how they interrelate to each other. The functional operations described inthis chapter refer to the KAC 1052 in the test environment, not on the aircraft.This section provides the information required to effectively perform faultisolation at the shop-replaceable unit level. The shop technician should befamiliar with the systems that interface with the KAC 1052 as well as the signal

flow from circuit card assembly to circuit card assembly in order to effectivelyachieve this level of maintenance.

B. Theory of Operation (Subtask 23-10-07-87-010-A01)

(1) General

The KAC 1052 Antenna Coupler is a component of a KHF 1050 RadioCommunications System.

It receives 200W PEP HF signals from the KPA Power Amplifier (PA) and feedsthe power to an aircraft antenna through its impedance transformationnetworks. Received signals from the antenna pass through the KAC 1052 andKPA 1052 Power Amplifier (PA) to the KRX 1053 Receiver/Exciter (RX/EX).The Unit is normally installed near an antenna inside the aircraft fuselage.

Placement within close proximity to the antenna is important in the reduction offeed line loss.

In order to prevent high-voltage arcing at high altitudes, the unit is filled withnitrogen and keeps its internal pressure consistent.



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(2) RF Networks

The RF matching circuit of the unit is composed of three circuit branches; shuntcapacitor, series capacitor and inductor circuit. Each branch has a dedicatedcard; Shunt Capacitor Board, Series Capacitor Board and Coil Board.

Each branch is composed of 12 to 13 elements that are combination ofcapacitors or inductors and switching relays. The element values are designedto provide both sufficient resolution at the upper limit frequency and wide

coverage range at the lower limit frequency. Each capacitor or inductor isconnected and disconnected by relays.

Figure 5 Matching Network Element Selection (Task 23-10-07-99B-805-A01)shows the way in which inductor and capacitor elements are switched in andout by relays. The values of these elements increase in a binary manner.

For example, if the capacitance value of C101 is 1, the relative capacitance

value of C102, C103 will be 2 and 4. Combined inductance or combinedcapacitance of each branch is the sum of all applied elements in that branch.

Figure 5 Matching Network Element Selection (Task 23-10-07-99B-805-A01)



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Up to 13 capacitors can be connected in parallel on the Series Cap Board toprovide the series capacitor elements for the tuning network. This board alsohas three network determining relays. The maximum capacitance isapproximately 1500 pF.

The Coil Board has 12 inductor elements that can be connected in series. It alsocontains three relays that are used to determine the network type. Themaximum inductance is approximately 48 uH.

Figure 6 RF Matching Network (Task 23-10-07-99B-806-A01) NCOMPONENT MAINTENANCE MANUAL


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PAGE 17


Table 3 Circuit Configurations (Task 23-10-07-99A-805-A01)(sheet 1 of 2)

No. Circuit Schematic Ls on Lp on LC on LH1 LH2 LHSR Cin on Cs on1 Cs on2 C1p Cp in Cp out Note

1 Cp-Cs O O O O O O

2 Cs-Cp O O O O O O

3 Cp-Ls O X X X O O

4 Ls-Cp O X X X O

5 Cs-Pl O O O O O

6 Cp-Cs-Lp O X X X O O O O

Note: O = relay on X = either relay on or off, depending on inductor value Blank = relay open




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PAGE 19


Table 3 Circuit Configurations (Task 23-10-07-99A-805-A01)(sheet 2 of 2)

No. Circuit Schematic Ls on Lp on LC on LH1 LH2 LHSR Cin on Cs on1 Cs on2 C1p Cp in Cp out Notes

7 Lp-Cs-Cp O O O O O O

8 Clp-Ls-C3p O X X X O O O O

9 Ls-Cp-Cs O O O O O

10 Cp-Ls-Cs O O O O O

11 Ls-Cs-Cp O O O O

12 THRU O O O O O

Note: O = relay on X = either relay on or off, depending on inductor value Blank = relay open




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KAC 1052 A t C l / P t N 064 01074 0101


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(3) Sensors

The KAC 1052 has the following sensors; impedance sensors, pressuresensor, temperature sensor and power supply voltage sensor. The impedancesensors are located on the Sensor & Relay Drive. The other sensors arelocated on the Coupler Control Board. The impedance sensors are divided intomagnitude detector, phase detector, angle detector, resistance (R) detector,conductance (G) detector and VSWR detector.

Figure 7 Impedance Sensors Block Diagram (Task 23-10-07-99B-807-A01)shows the block diagram of the impedance sensors on the Sensor & RelayDrive Board.

Figure 7 Impedance Sensors Block Diagram (Task 23-10-07-99B-807-A01)

The magnitude (Zin) detector measures the magnitude of line impedance. Thedetector compares the magnitude of line voltage with that of current. Ifmagnitude of line voltage is smaller than line current (impedance is less than50 Ohms), the signal Zin


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The angle detector generates DC voltage proportional to the phase differencebetween line voltage and line current. The signal has no polarity and it will be

5Vdc at maximum phase difference of 90 degrees.

The resistance detector measures the magnitude of real part line impedance.The detector compares the sum of the line voltage and current with themagnitude of the line voltage. If the real part of line impedance is smaller than50 Ohms, the signal RinGo will be high.

The VSWR detector detects forward voltage (Vf) and reflected voltage (Vr) ofline. Each voltage is compared to each other to generate VSWR signals on theCPLR Control card. The signal Vf is also used to generate PWR ON and PWR

Hi signals. The PWR ON signal informs the CPU that RF power level is validand enables tuning operation. The PWR Hi signal informs the CPU that RFpower level is too high to tune and enables detune detection.

The pressure sensor detects internal absolute pressure of the unit. The deviceU42 outputs differential DC voltage Vo+ and Vo- proportional to the pressurefollowed by the high input impedance differential amplifier composed of U43and U44A. The gain of the differential amplifier is designed such that the output

voltage will be approximately 4Vdc with 30-psi pressures. This voltage isprovided to CPU and converted digital value to detect pressure-warning level.The comparator U44B detects the low-pressure alarm and informs CPU viaCPLD as PRESS ALM. The alarm level is set to approximately 11.9 psia.

The temperature sensor detects internal temperature of the unit. The deviceR428 varies its resistance in response to temperature and shunt resistors R426and R427 linearize the resistance. The output voltage of the amplifier U45A isapproximately proportional to absolute temperature and will be approximately2Vdc at 400 degrees K. This voltage is provided to the CPU and converted toa digital value to compensate the pressure value at room temperature.

The power supply voltage monitor observes the combined voltage of 12Vdc NCOMPONENT MAINTENANCE MANUAL

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(4) Bridging Amplifier

The Bridging Amplifier is mounted on the Sensor Relay Drive Board. Thisamplifier is activated under three conditions:

In the event the KAC 1052 has not been tuned up on the receive frequency During dual-system operation (in the secondary system) When the KHF 1050 system is first turned on, before any transmission is

made

When activated, the amplifier amplifies the received signal from the antennaand provides the signal to the KRX 1053 Receiver/Exciter via the KPA 1052Power Amplifier.

Figure 8 Bridging Amplifier Block Diagram (Task 23-10-07-99B-808-A01)shows a block diagram of the Bridging Amplifier. The amplifier is composed ofsingle NPN transistor and transformer used for feedback circuit. The

impedance matching transformer is inserted at its input circuit to convert theimpedance from 50 Ohm to about 400 Ohm. The approximate gain of theamplifier is 9 to 12 dB at the frequency range from 2 to 30MHz.

The internal oscillator and output level detector are incorporated to detect thefailure of the amplifier. The frequency of the oscillator is approximately 4MHz.To protect the amplifier, the input circuit is connected to ground and the outputis connected to an internal 50 Ohm resistor during transmission on the KHF

1050 system.


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KAC 1052 Antenna Coupler / Part No. 064 01074 0101

(5) CPLR Control

The CPLR CONTROL is composed of CPU, CPLD, EEPROM, analoginterface, RS232C interface driver, reference voltage generator, pressuresensor, temperature sensor and voltage sensor. The card administers alloperations and monitoring of the state of the unit.

Figure 9 CPLR Control Block Diagram (Task 23-10-07-99B-809-A01) showsthe block diagram of the card.

Functions of this card are as follows:

Serial communication with RX/EX Observation of the discrete signals from RX/EX Setting of operation mode of PA according to frequency and emission mode Observation of the PA alarm ON-OFF control of relays for the RF matching network

Observation of impedance signals fed from SENSOR & RLY DRV card Measurement and observation of pressure, temperature and power supply

voltage Storing, restoring and initializing the tuning parameters in the EEPROM Serial communication with external PC via RS-232C port Execution Built-In-Test (BIT), reporting and recording of the results of BIT




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KAC 1052 Antenna Coupler / Part No. 064 01074 0101

CPU U1 performs a main role in the unit. It is the highly efficient single chipmicrocomputer, which makes the 32-bit H8/300H a core and integrates the

peripheral functions needed for system configuration. The H8/300H operatesin a 32-bit configuration and is capable of 16Mbytes linear address area.

The integrated peripheral functions in the device is composed of 128kbytesROM, 4kbytes RAM, 16-bit and 8-bit timers, programmable pattern controller(TPC), watch dog timer (WDT), 3-channel serial communication interfaces(SCI), 10-bit A/D converter, D/A converter, I/O ports, DMA controller etc. TheCPU has the flexibility to change its configuration and operation mode. TheCPU has seven operation modes that change address and data bus widths.The ROM on this card has 128kbyte flash ROM that enables it to bereprogrammed. The operating frequency is approximately 20MHz. Externaladdress and data buses are not used.

CPLD U2 is a programmable logic device that enables users to rewrite thehardware configuration. In this card the CPLD is applied to interface between

the CPU and other card or other LRUs.

EEPROM U5 is the non-volatile memory and has the capacity of 32kbytes. Thedevice is directly connected with the CPU. The device stores tuningparameters, strap information, some of the latest tuning failure results and BITresults. The recorded data can be read by maintenance software via RS-232Cport J10522. Some failures are reported to the RX/EX.

All analog signals are fed to the CPU and converted from analog voltages todigital data by and internal 10-bit A/D converter. The converter has 8-portchannels selected by time division. The following signals are input to theconverter via analog switched U29 to U31:

Forward power voltage fed from SENSOR & RLY DRV: Vf Reflected power voltage fed from SENSOR & RLY DRV: Vr Magnitude of RF input voltage (only during tuning operation): Vin Magnitude of RF input current (only during tuning operation): Iin Absolute Kelvin temperature: Temp Magnitude of phase difference between RF voltage and current (only during

tuning operation): Angle Absolute internal air pressure: Press N



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p

These signals are used to determine the tuning algorithm and failures detectionof pressure, power supply voltage, bridge amplifier and sensor.

RS-232C interface driver IC U6 converts bi-directionally between differentialsignals and TTL level signals. The TTL signals are provided to the CPU via theCPLD.

Reference voltage generator U4 generates a stable 5Vdc required by the CPUfor A/D converting.

Pressure sensors, temperature sensors and the voltage monitor are describedin Paragraph 2.B.(3) Sensors.

Connector J16 is a port for programming the CPLD with dedicated cables andparallel port of a PC.

Connector J17 is a port for programming the CPU with dedicated cables and

writer and serial port of a PC.

Connector J18 is a port for debugging software operation of the CPU and directmonitoring the state of relays at the factory.

(6)Power Supply and Interface

The PS & Interface card is composed of power supply switching circuit, voltage

regulators, voltage-current converter for APC, RS422 interface driver and surgeprotection for interface signals. The card supplies 28V, 12V and 5V DC powerto all cards and has all interface connectors to communicate with other LRUs.The power supply switching circuit is comprised of a controller IC U51, aswitching N-channel FET Q2, a resistor for detecting excessive current, anovervoltage detector, an undervoltage detector and PWR CONT controller.

If the PWR CONT pin is grounded, the FET Q1 will turn off. And if the voltageof U51-1 is over about 1.25Vdc, the FET Q2 will turn on. As a result, 28Vdcpower will be supplied to relays and regulator ICs U52 and U53 that are usedby CPLR CONTROL card and SENSOR & RLY DRV card. The power-onvoltage is determined by a voltage divider comprised of R43 and R44.


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The output voltage is controlled by the voltage across U52-2 and U52-3 whichis approximately 1.2 Vdc. As a result, the output voltage is approximately 12

Vdc.

The voltage-current converter for the automatic power control (APC) iscomprised of a rail-to-rail operational amplifier, IC U63, and an NPN transistor,Q3. The circuit converts the forward power voltage Vf fed from SENSOR & RLYDRV to direct current for the APC feedback system during tuning operation ofthe unit. The output current is proportional to 2-Vf. For example, If Vf is 0V, theoutput current is approximately 20 mA. If Vf is approximately 2 Vdc, the currentis nearly 0 mA. In the event the APC line between the KAC 1052 and the KPA0152 is broken, the power amplifier will default to minimum output power. Thissystem will protect both the PA and the antenna coupler from excessive RFoutput power during tuning operation.

RS-422 interface driver IC U61 converts between differential signals and TTLlevel signals in a bi-directional manner. The TTL signals are provided to CPU

on the CPLR CONTROL card.

Opto-coupler interfaces are adopted for all discrete input signals (excludingRS-422 receiving signal and PWR CONT signal) to isolate internal circuits fromaircraft noise.

All discrete output signals from the CPLR CONTROL card are fed to the KRX1053 and KPA 1052 via this card.

All discrete input and output pins are protected against induced surge voltageby inserting series resistors and shunt surge absorbers (Silicon TransientVoltage Suppressor: TVS) excluding primary power input. Figure 11 PS andInterface Surge Protection Circuits (Task 23-10-07-99B-811-A01) shows threekinds of surge protection circuits adopted on this card.




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This card has two interface connectors that are directly mounted for interfacingwith external devices. Sub-D connector J10521 is used for communication with

the RX/EX and PA, and J10522 is used for connecting to the serial port of anexternal PC.

(7) Interface Signal Descriptions

The discrete interface signals of CONTROL connector J10521 are described inTable 4 Interface Signal Description J10521 (Task 23-10-07-99A-806-A01),and those of TEST connector J10522 are described in Table 5 Interface SignalDescription J10522 (Task 23-10-07-99A-807-A01).

Pin Signal Name Source/Dest I/O Description Properties

20 PRI PWR External Input +27.5 Vdc Primary Power Power In

1 PRI PWR RTN External N/A Primary Power Return GND

21 PWR CNT External Input Power ON/OFF Control Low in active

2 PWR CNT RTN External N/A Power ON/OFF Control Return GND

11 RC COM RX/EX Input RX/EX Input Common +15V

27 MATCH ON RX/EX Input Matching Circuit ON Low in active

28 BRDG ON RX/EX Input Bridge Amplifier ON High in active

30 BFRD KEY RX/EX Input Buffered Key ON Low in active

33 PA BFRD KEY PA Output Buffered Key ON Low in active36 PC COM PA Input PA Input Common +15V

34 PA ALM #1 PA Input PA Alarm Signal #1 High in active

35 PA ALM #2 PA Input PA Alarm Signal #2 High in active

3 STRAP A External Input Antenna Type Strap A Low in active

22 STRAP B External Input Antenna Type Strap B Low in active

4 STRAP COM External Input Strap Common GND

23 SPARE N/A I/O Spare Interface Port Low in active

29 CR COM RX/EX Output RX/EX Output Common +12V N



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Table 4 Interface Signal Description J10521 (Task 23-10-07-99A-806-A01)(sheet 2 of 2)


32 CP COM PA Output PA Output Common +12V

15 PA INHB PA Output PA TX Inhibit High in active

16 PA SI PA Output PA Mode Serial Data High in active

17 PA SCK PA Output PA Mode Serial Clock High in active

18 PA RCK PA Output PA Mode Serial Strobe High in active

19 PA ALM RST PA Output PA Mode Rest Low in active

6 RCA RX/EX Input Serial Receive Data + RS-422 +

24 RCB RX/EX Input Serial Receive Data - RS-422 -

7 CRA RX/EX Output Serial Send Data + RS-422 +

25 CRB RX/EX Output Serial Send Data - RS-422 -

8 BUS COM RX/EX N/A RS-422 BUS Common GND

14 APC H PA Output APC Feedback + Current loop

37 APC L PA Output APC Feedback - Current loop return

26 EXTR COM RX/EX N/A Exciter Common GND

5 FG N/A N/A Frame Ground GND




3 TEST TXD External PC Output Serial Send Data + RS-232C

2 TEST RXD External PC Input Serial Receive Data RS-232C

5 TEST COM External PC N/A Test Common GND



TESTING AND FAULT ISOLATION


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TESTING AND FAULT ISOLATION

1. How to Use (Task 23-10-07-99C-802-A01)

A. General (Subtask 23-10-07-99F-005-A01)

(1) This section describes procedures for testing and fault isolation of the KAC1052 Coupler.

(2) Equivalent materials and equipment to the items listed in the Return to Servicetesting options are permitted. It is the responsibility of the user to find equivalentpart numbers.

(3) The KAC 1052 can be tested as part of a KHF 1050 system using a bench-testharness or as a stand-alone unit with a properly configured HF Automated TestEquipment (ATE) System. Paragraph 3.B.B. Bench-Test Harness Return toService Test Solution (Subtask 23-10-07-75-001-A01) for the bench-test

harness procedure and to Paragraph 4.C. HF ATE System Test Solution(Subtask 23-10-07-75-006-A01) for the ATE system procedure.

2. Test Philosophy (Task 23-10-07-75-801-A01)

A. Airplane Fault Isolation (Subtask 23-10-07-94-001-A01)

(1) The test philosophy for the KAC 1052 is to test and fault isolate to the defective

circuit card assembly or other authorized subassembly in accordance with thismanual. The line mechanic should remove the KAC 1052 only when the unit isnot operating properly.

3. Procedure (Task 23-10-06-75-802-A01)

A. Shop Fault Isolation (Subtask 23-10-07-81-001-A01)

The KAC 1052 contains six printed circuit boards. The information in Table 1001KAC 1052 Fault Isolation (Task 23-10-07-99A-808-A01) and Table 1002 KAC1052 Pressure Indication (Task 23-10-07-99A-809-A01) can be used to assist introubleshooting the antenna coupler to the card level. Due to the complexity of the




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Table 1001 KAC 1052 Fault Isolation (Task 23-10-07-99A-808-A01)

Symptom Primary Cause/Action Alternate Cause/Action

Unit totally inoperative Check to see if PWRCONT line is less than 1Vdc

Defective PS InterfaceBoard or CPU Board

Pressure Fail or PressureWarning annunciation on

the controller

Low pressure in the KAC1052. See Note 2 in Table

1002 KAC 1052 PressureIndication (Task23-10-07-99A-809-A01)).

CPU Board is defective.

CPLR Fail annunciation onthe controller

PS Interface Board isdefective or PWR CONTline is not low.

CPU Board is defective.

Coupler fails to find a tuneon any frequency

Sensor Board is defectiveor antenna connection isbad.

Defective Coil, Shunt Capor Series Cap Board.

Coupler fails to find a tuneon a narrow band offrequencies

Defective Coil, Shunt Capor Series Cap Board.

Sensor Board is defective.

Coupler finds a tune, but

then retunes when makinga transmission.

Defective Coil, Shunt Cap

or Series Cap Board.

A loose connection exists

or arching is occurring atthe HN connector, feedlineor antenna simulator.

Less than 6 dB of dropwhen bridging amplifier isdisengaged

Sensor Board is defective. KAC 1052 has previouslybeen tuned to thisfrequency or a nearbyfrequency.




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Table 1002 KAC 1052 Pressure Indication (Task 23-10-07-99A-809-A01)

Pressure Indication Meaning Corrective Action

No warning or failureindication

Normal condition. Pressure isgreater than 8 pounds persquare inch (psi).

Check pressure on an annualbasis (See Note 1).

Pressure Warning The pressure has beenreduced below 8 psi. No

performance degradation willbe observed. Continuedoperation may result in apressure failure.

Service the KAC 1052 in thenear future to check for leaks

and repressurize the unit.

Pressure Fail The pressure has beenreduced to a level at whicharching could occur inside the

antenna coupler at a 200 Wpower level. The system willautomatically reduce thepower to 50 W, regardless ofthe power level settingselected by the pilot.

Service the KAC 1052immediately. Performance isreduced in this failure mode.

Note 1: When measured at room temperature, the pressure should be between 8 and

10 psi (66-69 kPa gauge). If below 8 psi, add Nitrogen to bring the pressure up to 8 to10 psi.

Note 2: With the KAC 1052 vented to the atmosphere at standard sea-level pressure,a Pressure Warning will be realized. A Pressure Fail will occur only at pressures belowstandard sea-level pressure.



B Bench-Test Harness Return to Service Test Solution (Subtask


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B. Bench-Test Harness Return to Service Test Solution (Subtask23-10-07-75-001-A01)

(1) Equipment Required

The following equipment is required for manually bench testing the KAC 1052:

28 Vdc power supply capable of 30 A Multimeter 50 Ohm load (30 dB attenuator) with a 100 W minimum power rating

Low-power 30 dB attenuator (1.2 W minimum) Antenna simulator - or 4 each 50 Ohm, 25 W loads. (See Paragraph 3.B.(2)

Preliminary Setup for load configuration). SWR/Wattmeter capable of average reading and peak reading functions,

2-30 MHz. KHF 1050 System bench-test harness. Figure 9002 KHF 1050 System

Bench-Test Harness (Task 23-10-06-99B-816-A01).

Functional KPA 1052, KRX 1053 and controller

(2) Preliminary Setup

Connect the KAC 1052 to a functioning KPA 1052, KRX 1053 and an ARINC429 controller such as the PS440. Figure 1001 KAC 1052 Test Setup (Task23-10-07-99B-812-A01) for a suitable bench-test setup. If an antennasimulator representative of the antenna type used on the aircraft is available,

connect the simulator to J10528. As an alternative, the following can be used.

Honeywell KTS 157 Antenna Simulator 4 each 50 Ohm, 25 W loads; connected in parallel with short interconnects;

then connected to the KAC 1052 with approximately 10 feet (3 m) of 50 Ohmcoax (RG 214, or equivalent).

Set the power supply to between 27.5 and 28.0 Vdc

(3) Antenna Coupler Tuning Tests

(a) Perform Preliminary Setup per Paragraph 3.B.(2) Preliminary Setup in thissection Ensure that J10528 is terminated into an appropriate antenna N



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Figure 1001 KAC 1052 Test Setup (Task 23-10-07-99B-812-A01)

(c) Momentarily key the transmitter with the PTT switch. The antenna couplerwill begin the tuning sequence. During the tuning sequence, relay switching

sounds will be heard inside the KAC 1052. The controller will also indicatethat the antenna coupler is in the tuning process.

Note: If the antenna coupler has already been tuned up into this load atthis operating frequency (or into a load of similar impedance) the N


(e) As the antenna coupler is tuning, observe that the SWR reading is 2:1 or


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(e) As the antenna coupler is tuning, observe that the SWR reading is 2:1 orless. It is normal for the SWR to vary as the antenna coupler tunes the load.

(f) After the tuning sequence has completed, key the microphone with nomodulation and observe the SWR. The SWR should be less than or equalto 2.5:1. (On most frequencies, the SWR will be 1.5:1 or less.)

Measured SWR at 2.1 MHz: __________

Note: If using a KTS 157 antenna simulator, limit the transmissions to a

25% duty cycle to prevent overheating the antenna simulator. Limitmaximum transmission time to 20 seconds.

Note: The length of time it takes to tune the antenna will vary withoperating frequency and antenna impedance. Tuning times of 1 to30 seconds may be observed.

Note: Differences in SWR meter and wattmeter calibration may result inSWR and power readings somewhat different from those specified.

(g) Briefly speak into the microphone, and ensure that the SWR remainsconstant.

(h) When not speaking, observe that unmodulated AM power is typically 50 W.

Measured power at 2.1 MHz: __________.

(i) Change the operating frequency to 10.1000 MHz. Repeat steps (c) through(h). (If using a KTS 157 Antenna Simulator, set the switch to position 3.)

(j) Change the operating frequency to 29.9 MHz. Repeat steps (c) through (h).(If using a KTS 157 Antenna Simulator, set the switch to position 8.)

(k) Change the operating frequency to any other desired test frequency.Repeat steps (c) through (h).

(l) Return to an operating frequency of 2.1 MHz. (If using a KTS 157 AntennaSimulator set the switch to position 1 ) N


(4) High-SWR Retune Test


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( ) g

(a) Perform the Preliminary Setup in Paragraph 3.B.(2) Preliminary Setup andAntenna Coupler Tuning Tests in Paragraph 3.B.(3) Antenna CouplerTuning Tests in this section.

(b) Remove the KAC 1052 RF output, J10528, from the antenna simulator andconnect J10528 to the 50 Ohm dummy load.

(c) Set the frequency to 2.1 MHz, AM mode.

(d) Momentarily key the transmitter with the PTT switch. The antenna couplershould sense that the load has changed and again begin its tuningsequence. During the tuning sequence, relay switching sounds will be heardinside the KAC 1052. The controller will also indicate that the antennacoupler is in the tuning process.

NOTE: With some particular load impedance and frequency combinations,it is possible that the SWR will not exceed approximately 3:1 whenchanging from the antenna simulator to the 50 load. Under suchconditions, a retune will not occur.

(e) After the tuning sequence has completed, key the microphone with nomodulation and observe that the SWR is less than or equal to 2.5:1.

(5) Bridging Amplifier

(a) Connect the equipment as shown in the Bridging Amplifier Test Setup,Figure 1001 KAC 1052 Test Setup (Task 23-10-07-99B-812-A01). Ensurethat there is 60 dB of attenuation between KAC 1052 J10528 and the RFsignal generator output.

(b) Turn the KHF 1050 system on and set the frequency to one that the KAC

1052 has not been previously tuned up on, such as 10.200 MHz, USB voicemode. (This activates the bridging amplifier in the KAC 1052).

(c) Tune the RF signal generator to 10.201 MHz with no modulation. Set thelevel to 60 dBm N



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Figure 1002 KAC 1052 Bridging Amplifier Test Setup (Task 23-10-07-99B-813-A01)

(e) Momentarily key the PTT switch to tune the KAC 1052 into the attenuator.This deactivates the bridging amplifier.

(f) When the KAC 1052 has completed the tuning, note the Receiver/Sidetoneaudio level.

Measured Level: __________________ VAC.



(g) The level in step (f) should be at least 6 dB lower (one-half the voltage or


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less) than that noted in step (d).

Note: If the Bridging Amplifier Test is repeated, it is important to select afrequency that has not previously been tuned by the KAC 1052 inorder to activate the bridging amplifier. Change the frequency atleast 100 kHz from any previously tuned frequency.

C. KPA 1052 Adjustments

The KAC 1052 does not contain any field adjustments. All adjustments are to bemade in the factory.

4. Automatic Test Requirements (Task 23-10-07-75-803-A01)


(1) This section contains information pertaining to the automated test solution forthe KAC 1052 Coupler.

B. Equipment and Materials (Subtask 23-10-07-75-005-A01)

(1) Equipment and materials required to functionally test the KAC 1052 on the HFATE System are contained in the following:

HF ATE System, Part No. 071-05558-0001 KAC 1052 Test Sequence Software, Part No. 731-00804-XXXX

C. HF ATE System Test Solution (Subtask 23-10-07-75-006-A01)

(1) HF ATE System Test Procedures

(a) Attach the HF ATE System test cable connector marked J10521 to the INT

connector (J10521) of the KAC 1052 to be tested.

(b) Connect the HF ATE System test cable connector marked J10522 to theControl Connector (J10522) of the KAC 1052 to be tested.



(f Following on screen instructions, enter operator name and password andUUT i l b


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UUT serial number.

(g) After the test sequence screen opens, select the option TEST UUT.

(h) Return to service testing will automatically execute.



SCHEMATICS AND WIRING DIAGRAMS


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This pageblock is not applicable to this CMM.




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(Blank Page)



DISASSEMBLY


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1. Task (Task 23-10-07-99C-803-A01)

A. General (subtask 23-10-07-99F-006-A01)

(1) Use these procedures to remove parts from the KAC 1052 to do the cleaning,checks, repair, and replacement of parts as necessary. References to theILLUSTRATED PARTS LIST (IPL) show you where to find the parts toremove. The applicable figure number in the IPL is given in each primaryparagraph and does not change until specified differently.

(2) Before disassembly, use TESTING AND FAULT ISOLATION to examine thecondition of the KAC 1052 or to find the most probable cause of malfunctions.Do this to prevent disassembly that is not necessary. Do only those proceduresof disassembly that are necessary to remove defective parts and to correctmalfunctions.

(3) As an aid for assembly, tag the items that are disconnected to show where theconnections were made. Include data on any special conditions of a connectionsuch as the polarity and the position of the items.

2. Equipment and Materials (Task 23-10-07-94-802-A01)


(1) Common shop tools and best-established shop practices are used todisassemble the KAC 1052. Refer to Figure 10001 KAC 1052 Final Assembly(Task 23-10-07-99B-816-A01) to aid in disassembly.

3. Procedure (Task 23-10-07-03-801-A01)


CAUTION: THE KAC 1052 HAS COMPONENTS THAT ELECTROSTATICDISCHARGE MAY DAMAGE. REFER TO THE INSTRUCTIONS INTHE REPAIR CHAPTER WHEN YOU MOVE OR DISASSEMBLE



Arrange all subassemblies and the associated hardware in specific areas to aid inreassembly


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reassembly.

(1) Side Plates (2) MPBC36547A

Remove both side plates by removing 76 NA3x16Sus Screws (50). Carefullypop the side plates up and away from the chassis (1) to prevent rupturing theO-ring seals. (36)

(2) Series Cap Board (26) MDLW11386D

Remove the series cap board (CSC-591B) by removing the 8 NC3x10BSscrews (57) securing the series cap board to the chassis (1). Slide the seriescap board to the rear disconnecting it from the sensor and relay drive board(24). Remove the series cap board from the chassis (1).

(3) Shunt Cap Board (25) MDLW11385F

Remove the Shunt Cap Board (CSC-590B) by removing NC3x10BS screws(57) securing the Shunt Cap B board to the chassis (1). Remove the shortstandoff (near the unit HN connector) from the Shunt Cap Board. Remove thelong standoff (near the long resistor on the rear of the board), which goesthrough the Shunt Cap Board, from the Coil Board. If provided, remove the longstandoff near the lower front of the board, which goes through the Shunt CapBoard, from the Coil Board. (Early production units will not have this standoff.)

Remove the W2 antenna wire (58) NC3x6Bs from the Shunt Board, freeing theboard from the antenna wire. Slide the Shunt Cap Board to the rear,disconnecting it from the Sensor and Relay Drive Board (24) and lift it up andout of the chassis (1).

(4) Coil Board (27) MDLW11390E

Remove the coil board (CSC-592B) from the left side of the unit by removing 9

NC3x10BS screws (57) securing the board to the chassis. If the Series CapBoard and Shunt Cap Board have not been removed, remove three additionalNC3x10BS screws attaching the Coil Board to the standoffs. (Early productionunits have only two standoff screws.) Slide the coil board to the rear,disconnecting it from the Sensor and Relay Drive board (24) and lift it up and N


(5) Sensor and Relay Drive Board (24) MDCW10907D


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Remove the sensor and relay drive board (CNN-338) by removing the 4NC3x6BS screws (58) securing the board to the standoffs (34) of the couplercontrol board (23). Remove the sensor relay board board by separating thebayonet pins from the CPLR control board connector. Remove the sensor andrelay drive board from the chassis (1).

(6) Shields (29) MPSC30332A

Remove the 4 standoffs (34) securing the Shields to the CPLR control board(23). Dislodge the RF Collar from the BNC housing which will allow the shieldsto be removed as an assembly.

(7) CPLR Control Board (23) MDLW11428

Remove the CPLR control board (CDC-1083B) by removing the 4 Shieldstandoffs (33). Remove the CPLR control board by separating the bayonet pinsfrom the power supply and interface connector. Remove the CPLR controlboard from the chassis.

(8) Power Supply and Interface Board (22) MDBW10546B

Remove the PS and Interface board (CBL-103) by removing the 4 standoffs(32) securing the PS and Interface board to the front of the chassis (1) and 1

NC3x6Bs screw (58) from TP4 . Remove 8 S3x8 Sus screws (55) from J10521and J10522 securing the connectors to the front of the chassis (1). Remove thePS and Interface board from the chassis (1) ensuring that the gaskets (15) &(16) do not tear as they will need to hold pressure upon reassembly.




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(Blank Page)


KAC 1052 Coupler / Part No. 064-01074-0101

CLEANING


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1. Task (Task 23-10-06-99C-804-A01)

A. General (Subtask 23-10-06-99F-007-A01)

(1) This section contains information pertaining to the cleaning of subassembliesin the KAC 1052.

WARNING: GOGGLES MUST BE WORN WHEN USING PRESSURIZED

AIR TO BLOW DUST AND DIRT FROM EQUIPMENT. ALLPERSONNEL SHOULD BE CLEARED FROM THE IMMEDIATEAREA.

WARNING: OPERATIONS INVOLVING THE USE OF A CLEANINGSOLVENT SHOULD BE PERFORMED UNDER A VENTILATEDHOOD. AVOID BREATHING SOLVENT VAPOR AND FUMES.

AVOID CONTINUOUS CONTACT WITH THE SOLVENT.

2. Equipment and Materials (Task 23-10-06-94-803-A01)


(1) Table 4001 Recommended Cleaning Materials (Task 23-10-07-99A-810-A01)lists the recommended cleaning agents to be used during overhaul of the KAC

1052.

NOTE: Equivalent substitutes may be used as cleaning agents.

(2) In this section, air jet refers to a hand-operated air nozzle supplied with clean,dry, compressed air at a maximum of 28 pounds of force per square inch (psi).


KAC 1052 Coupler / Part No. 064-01074-0101


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Table 4001 Recommended Cleaning Materials (Task 23-10-07-99A-810-A01)

3. Procedure (Task 23-10-06-16-801-A01)


WARNING: THE KAC 1052 HAS COMPONENTS THAT ELECTROSTATICDISCHARGE MAY DAMAGE. REFER TO THE INSTRUCTIONS INTHE REPAIR CHAPTER WHEN YOU MOVE OR DISASSEMBLETHE KAC 1052.

(1) Exterior Surfaces

(a) Wipe exterior of the KAC 1052 with a lint-free cloth dampened withdenatured alcohol.

(b) If necessary, open any blocked ventilation holes by first saturating thedebris clogging the apertures with denatured alcohol and then blowing theloosened material out w

KAC-1052 - MAINTENANCE MANUAL 006-15640-0001_1

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Transcript of KAC-1052 - MAINTENANCE MANUAL 006-15640-0001_1