LCD Repair Tips

Diamond View LCD Monitor

DV172 / DV172B (B=Black Cosmetic)

Service Guide

February 2003

Distributed byMitsubishi Electric Australia Pty. Ltd.

A.B.N. 58 001 215 792

348 Victoria RoadRYDALMERE NSW 2116

AustraliaTelephone 1300 605 808

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CopyrightCopyright � 1996 by the Company. All rights reserved. No part of this publication may bereproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language orcomputer language, in any form or by any means, electronic, mechanical, magnetic, optical,chemical, manual or otherwise, without the prior written permission of the Company.

DisclaimerThe Company makes no representations or warranties, either expressed or implied, with respect tothe contents hereof and specifically disclaims any warranties, merchantability or fitness for anyparticular purpose. Further, the Company reserves the right to reserve this publication and to makechanges from time to time in the contents hereof without obligation of the Company to notify anyperson of such revision or changes.

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Diamond View LCD MonitorDV172 / DV172B

(B = Black Cosmetic’s)

Manual Contents

Section1. Engineering Specifications

2. Circuit Operation Theory

3. Alignment procedure

4. Trouble Shooting

5. Parts Lists (DV172 & DV172B)

6. Schematic Diagrams

7. Assembly

DV172 LCD Monitor Service Guide Engineering Specification

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Table of Contents

1. INTRODUCTION ...................................................................................................................................2

2. ELECTRICAL CHARACTERISTICS .................................................................................................3 2.1 POWER SUPPLY......................................................................................................................................3 2.2 SIGNAL INTERFACE ...............................................................................................................................3 2.3 VIDEO PERFORMANCE...........................................................................................................................5 2.4 SCAN RANGE.........................................................................................................................................5 2.5 PLUG & PLAY DDC2B SUPPORT ..........................................................................................................5 2.6 SUPPORT TIMINGS.................................................................................................................................5

3. OPERATIONAL & FUNCTIONAL SPECIFICATION .....................................................................6 3.1 VIDEO PERFORMANCE...........................................................................................................................6 3.2 BRIGHTNESS ADJUSTABLE RANGE........................................................................................................6 3.3 ACOUSTICAL NOISE ..............................................................................................................................6 3.4 AUDIO PERFORMANCE ..........................................................................................................................7

4. LCD CHARACTERISTICS...................................................................................................................7 4.1 THE PHYSICAL DEFINITION & TECHNOLOGY SUMMARY OF LCD PANEL...............................................7

5. USER CONTROLS .................................................................................................................................8 5.1 USER’S HARDWARE CONTROL DEFINITION: ...........................................................................................8 5.2 OSD CONTROL FUNCTION DEFINITION..................................................................................................8

6. MECHANICAL CHARACTERISTICS ...............................................................................................9 6.1 DIMENSION ...........................................................................................................................................9 6.2 WEIGHT ................................................................................................................................................9 6.3 PLASTIC ................................................................................................................................................9 6.4 CARTON ................................................................................................................................................9

7. CERTIFICATION ...................................................................................................................................9

APPENDIX: PHYSICAL DIMENSION FRONT VIEW AND SIDE VIEW......................................11


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1. Introduction This specification describes DV172, a 17.0” dual interface color TFT LCD monitor with speakers supported. The display supports up to 1280x1024/75Hz resolution & refresh rate and 262144 colors with dithering. The features summary is as below,

Feature items Specifications Remark Panel supplier & Panel type of supplier AUO M170EN05 TN with Film type Actual Size Diagonal display 17.0" Panel display size Actual Resolution display SXGA(1280x1024) Panel display resolution

Viewing Angle (at Contrast Ratio ≧ 10)

+/- 70 degrees Horizontal (typ.) +/- 70 degrees Vertical (typ.)

+/- 60 degrees Horizontal (min.) +/- 60 degrees Vertical (min.) Panel spec

Analog interface with Scaling supported Yes With 15 pin D-sub connector DVI interface with Scaling supported Yes With 24 pin DVI connector. Video interface with Scaling supported No N.A. Max resolution mode supported 1280 x 1024 at 75Hz Number of Display Colors supported 262144 (with dithering) Panel driver is 6 bit Contrast Ratio 250:1 (min.), 500:1 (typ.)

Luminance 200 cd/m2 (min.), 260 cd/m2 (typ.)

At R,G,B saturated condition (Default “User” color setting)

AC power input Yes 90-264 Volts, 47-63 Hz. DC power input(with AC power adapter) No N.A. DPMS supported Yes < 3 watts LED indicator for power status showed Yes Green/Amber/Non OSD for control & information supported Yes Multi-language supported for OSD Yes 6 languages

Buttons control supported Yes 6 buttons including 1 monitor power on/off control button.

Flywheel control supported No N.A. Scaling function supported Yes Genesis gm5120 Auto adjustment function supported Yes “Auto” key function DDC function supported(EDID ver. 1.3) Yes DDC2B only Audio speakers supported Yes Audio Jack(input connector) supported Yes Earphone Jack(input connector) supported No N.A. Microphone function supported No N.A. Mechanical Tilt base design Yes From 0 to +20 degree VESA wall mounting design Yes Mechanical Rotate design No N.A. Mechanical Lift base design No N.A.


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2. Electrical Characteristics 2.1 Power supply

Item Condition Spec OK N.A Remark Input Voltage range Universal input full range 90~264VAC /47~63Hz √ Input Current range 90 ~ 264VAC < 2.0 Arms √ Power Consumption Normal “On” operation < 50 Watts √ LED: Green DPMS DPMS “Off” state < 3 Watts √ LED: Amber Inrush Current 110 VAC

220 VAC < 30 A (peak) < 60 A (peak)

√ Cold-start

Earth Leakage Current 264 VAC/50Hz < 3.5 mA √ Hi-Pot 1. 1500VAC, 1 sec

2. Ground test: 30A, 1sec Without damage

< 0.1 ohm √ (on-line test)

(in-lab test) Power Line Transient IEC1000-4-4 1KV √

IEC1000-4-5 (Surge) Common: 2KV, Differential: 1KV

√

CCFL operation range 90 ~ 264VAC 6mA ~ 15mA √ Each connector

CCFL Frequency 90 ~ 264VAC 40KHz ~ 80KHz √ Power cord Color: White or Black

Length: 1800 +/- 20 mm √ Depends on shipping

requirement (99 level)

2.2 Signal interface Item Condition Spec OK N.A Remark

Signal Cable 15 pin D-Sub Color: White or Black Length: 1600 +/- 20 mm

√ Depends on shipping requirement (99 level)

15 pin D-sub connector See Note-1 √ For 15 pin D-sub Pin assignment 24 pin DVI connector See Note-2 √ For 24 pin DVI

Video input Signal type-1 Separate analog R,G,B signals √ For 15 pin D-sub

Level(R,G,B signals) 700 mV (peak to peak) √ Impedance(R,G,B signals) 75 Ohms +/- 1.5 Ohms √ Signal type-2 TMDS signals √ For 24 pin DVI Single-ended input swing

voltage (V-swing) 200mV≤V-swing≤780mV √

Impedance(TMDS signals) 100 Ohms +/- 10 Ohms √ Sync input Signal type Separate H/V-sync

Composite H/V-sync (Positive/Negative)

√ For 15 pin D-sub

Level Logic High: 2.4V ~ 5.5V Logic Low: 0V ~ 0.5V

(TTL level)

√ Refer to VESA VSIS Standard V1R1

Impedance Minimum 2.2KΩ(pull down) √ 10KΩ for application Sync Pulse Width (SPW) 0.7μs < H-SPW

1H < V-SPW √

Note-1: The pin assignment of 15 pin D-sub connector:

5 1 10 6

15 11


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Pin Signal Assignment Pin Signal Assignment 1 Red video 9 PC5V (+5 volt power) 2 Green video 10 Sync Ground 3 Blue video 11 Ground 4 Ground 12 SDA 5 Ground 13 H-Sync (or H+V) 6 Red Ground 14 V-sync 7 Green Ground 15 SCL 8 Blue Ground

Note-2: The pin assignment of 24 pins DVI connector: (C1 ~ C5 are NC)

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

17 18 19 20 21 22 23 24

C1 C2

C3 C4C5

Pin Signal Assignment Pin Signal Assignment 1 TMDS RX2- 16 Hot Plug Detect 2 TMDS RX2+ 17 TMDS RX0- 3 TMDS Ground 18 TMDS RX0+ 4 Floating 19 TMDS Ground 5 Floating 20 Floating 6 DDC Clock 21 Floating 7 DDC Data 22 TMDS Ground 8 Floating 23 TMDS Clock+ 9 TMDS RX1- 24 TMDS Clock- 10 TMDS RX1+ C1 Floating (NC) 11 TMDS Ground C2 Floating (NC) 12 Floating C3 Floating (NC) 13 Floating C4 Floating (NC) 14 +5V Power C5 Floating (NC) 15 Ground


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2.3 Video performance Item Condition Spec OK N.A Remark

Max. support Pixel rate 135 MHz √ Max. Resolution 1280 x 1024 √ Rise time + Fall time < 3.7 ns

(50% of minimum pixel clock period)

√ 1280x1024 @ 75Hz (max. support timing)

Settling Time after overshoot /undershoot

< 5% final full-scale value √ Refer to VESA VSIS Standard V1R1

Overshoot/Undershoot < 12% of step function voltage level over the full voltage range

√ Refer to VESA VSIS Standard V1R1

2.4 Scan range Item Condition Spec OK N.A Remark

Horizontal 31 ~ 81KHz √ Vertical 56 ~ 75 Hz √ Without Frame buffer

2.5 Plug & Play DDC2B Support

Item Condition Spec OK N.A Remark DDC channel type DDC2B √ EDID Version 1.3 √ Refer to FP767-MEA

DV172 C212 S/W spec document to see the detailed EDID data definition..

2.6 Support Timings

Input Timing Actual Output

Resolution Horizontal Frequency (KHz)

Vertical Frequency (Hz)

Dot Clock Frequency (MHz)

Actual display Resolution

OK N.A Remark

640x350 31.47(P) 70.08(N) 25.17 1280x943 √ DOS

720x400 31.47(N) 70.08(P) 28.32 1280x1024 √ DOS

640x480 31.47(N) 60.00(N) 25.18 1280x1024 √ DOS

640x480 35.00(N) 67.00(N) 30.24 1280x1024 √ Macintosh

640x480 37.86(N) 72.80(N) 31.5 1280x1024 √ VESA

640x480 37.50(N) 75.00(N) 31.5 1280x1024 √ VESA

800x600 37.88(P) 60.32(P) 40.00 1280x1024 √ VESA

800x600 48.08(P) 72.19(P) 50.00 1280x1024 √ VESA

800x600 46.86(P) 75.00(P) 49.50 1280x1024 √ VESA

832X624 49.72(N) 74.55(N) 57.29 1280x1024 √ Macintosh

1024x768 48.36(N) 60.00(N) 65.00 1280x1024 √ VESA

1024x768 56.48(N) 70.10(N) 75.00 1280x1024 √ VESA

1024x768 60.02(P) 75.00(P) 78.75 1280x1024 √ VESA


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Input Timing Actual Output




Actual display Resolution

OK N.A Remark

1024X768 60.24(N) 74.93(N) 80.00 1280x1024 √ Macintosh

1152x864 67.50(P) 75.00(P) 108.00 1280x1024 √ VESA

1152x870 68.68(N) 75.06(N) 100.00 1280x1024 √ Macintosh

1152x900 61.80(N) 66.00(N) 94.50 1280x1024 √ SUN 66

1152x900 71.81(N) 76.14(N) 108.00 1280x1024 √ SUN

1280x1024 64.00(P) 60.00(P) 108.00 1280x1024 √ VESA

1280x1024 75.83(N) 71.53(N) 128.00 1280x1024 √ IBM1

1280x1024 80.00(P) 75.00(P) 135.00 1280x1024 √ VESA

1280x1024 81.18(N) 76.16(N) 135.09 1280x1024 √ SPARC2

Note-2: “P”, “N” stands for “Positive”, “Negative” polarity of incoming H-sync/V-sync (input timing)

3. Operational & Functional Specification 3.1 Video performance

Item Condition Spec OK N.A Remark Resolution Any input resolution modes

which are under 1280x1024 1280 x1024 √

Contrast ratio 250:1(min.), 500:1 (typ.) √ Brightness At R,G,B saturated condition

(Default “User” color setting) 200 cd/m2(min.) 260 cd/m2(typ.)

√

Response time Rising + Falling time 16 ms(typ.), 25ms(max.) √ Viewing angle At Contrast ratio ≧ 10 R/L: 60 degrees (min.)

70 degrees (typ.) √

At Contrast ratio ≧ 10 U/D: 60 degrees (min.) 70 degrees (typ.)

√

CIE coordinate of White (0.31, 0.33) +/- (0.03, 0.03) √

Display colors 262144 color with dithering √ 18 bits with dithering

3.2 Brightness Adjustable Range Item Condition Spec OK N.A Remark

Brightness adjustable range

At Max. Contrast level & Full-white color pattern

(Max. brightness value – Min. brightness value) ≧ 40 cd/㎡

√

3.3 Acoustical Noise

Item Condition Spec OK N.A Remark Acoustical Noise At 1 meter distance

& “Audio” function disabled ≦ 40 dB/A √


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3.4 Audio performance

Item Condition Spec OK N.A Remark Preamp + Power amp (1)Output power 1 Wrms/CH @ 1KHz √ Real output

(2)THD (@ 1W) <10% √ (3)S/N ratio 40dB √

Speaker Driver (1)Nominal impedance 8 ohm √

(2)Maximum input power 2W/CH √ (3)Frequency response 12KHz √

(4)Mean sound pressure level 83 ± 3 dB √ (5)Size 28x 40 mm √

Audio Control (1)Volume range 0 ~100 levels √ (2)Mute On/Off √

4. LCD Characteristics 4.1 The Physical definition & Technology summary of LCD panel

Item Condition Spec OK N.A Remark LCD Supplier AUO √ Panel type of Supplier M170EN05 √ Screen Diagonal 432mm(17.0”) √ Display area Unit=mm 337.920(H) x 270.336(V) √ Physical Size Unit=mm 358.5(W) x 296.5(H) x 19.0(V) √ Weight Unit=gram 1900 (typ.) √ Technology TN with Film √ Pixel pitch Unit=mm 0.264 x 0.264 √ Per one triad Pixel arrangement R,G,B vertical stripe √ Display mode Normally white √ Support color 262K colors(R,G, B 6-bit data) √


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5. User Controls 5.1 User’s hardware control definition:

Item Condition Spec OK N.A Remark Monitor Power button √

Enter button √ ▲/Inc. button √ ▼/Dec. button √

Exit button √ Auto button √

Mute button √ Input source select button √

5.2 OSD control function definition Item Condition Spec OK N.A Remark

Contrast √ See Table 3 Brightness √ Horizontal Position √ Vertical Position √

Pixel Clock √ Phase √ Color Temperature C1: 9300

C2: 6500 C3: 5800

User: Separate R,G,B adjustment

√

OSD Position OSD Horizontal position OSD Vertical position

√

Language 6 languages √ OSD Time From 5 sec to 60 sec √ Volume √

Hot key for Contrast √ Hot key for Brightness √ Hot key for Volume √ Auto adjustment Auto-Geometry/Color √ Information For input timing √ Mute √ Input Source select √ Recall √

* The detailed Firmware functions’ specification, please refer to C212, S/W spec document.


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6. Mechanical Characteristics 6.1 Dimension

Item Condition Spec OK N.A Remark Bezel opening 340x272.4 mm √ Refer to Table 6

Monitor without Stand L x W x H mm 382.7x118x402.85 mm √ Monitor with Stand L x W x H mm 382.7x200x404.3 mm √ Carton Box (outside) L x W x H mm 495x450x158 mm √ Tilt and Swivel range Tilt : 0/20 degree

Swivel:0 degrees √

6.2 Weight

Item Condition Spec OK N.A Remark Monitor (Net) 4.7Kg √ Monitor with packing (Gross) 6.5Kg √

6.3 Plastic Item Condition Spec OK N.A Remark

Flammability 94HB √ Heat deflection To ABS 65 ℃ √ UV stability ABS Delta E < 8.0 √ MPR2/TCO

Resin MPR2 : ABS (VW55/VE0856/D350)

√

Texture MT-11030 √ Color Pearl White √

6.4 Carton Item Condition Spec OK N.A Remark

Color Kraft √ Material B Flute √ Compression strength 530 KGF √ Burst Strength 16 KGF/cm2 √ Stacked quantity 13 Layers √

7. Certification Item Condition Spec OK N.A Remark

Environment Green design API Doc. 715-C49 √ ISO14000 Requirement

Blue Angel German Standard √ E-2000 Switzerland √ EPA USA Standard √ EN61000-3-2 Harmonics √


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TCO92/95 √ TCO99 √ PC-Monitor Microsoft Windows PC98/99 √ DPMS VESA √ DDC 2B Version 1.3 √ USB External √ Safety UL (USA) UL 1950 3rd edition √ CSA (Canada) C22.2 No. 950-M95 √ FIMKO EN60950 √ IEC950 √ EN60950 √ 73/23/EEC √ CB √ TUV/GS EN60950 √ CCIB (China) √ EIAJ/JEIDA (Japan) √

Item Condition Spec OK N.A Remark NOM (Mexico) √ JEON (Korea) √ EZU √ PSB √ EMC CE Mark 89/336/EEC √ FCC (USA) Class B √ EN55022 Class B √ CISPR 22 Class B √ VCCI (Japan) Class B √ BSMI (Taiwan) √ C-Tick (Australia) AS3548 √ RRL (Korean) √ X- Ray Requirement DHHS (21 CFR) USA X- Ray Standard √ DNHW √ PTB German X- Ray standard √ MPRII √ MPRIII √ Ergonomics ZH1/618 German ergonomic √ ISO 9241-3 -7 & 8 √


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Appendix: Physical Dimension Front View and Side view

382.7

340.0

250

357.5

78.5

200

272.4

DV172 LCD Monitor Service Guide Circuit Operation Theory

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I. Introduction: DV172 model is a 17” SXGA (1280x1024) 18 bits color TFT LCD monitor with multi-media function.

The features of DV172 are as below, (a)Dual signal input supported for a 15pins D-sub and a DVI-D input connectors. (b)It’s compliant with VESA DPMS spec to offer a smart power management and power saving function. (c)OSD menu supported for users to control the adjustable items and get some information about this monitor. (d)”Auto” button function supported to offer users an easy method to set all adjustable & controlled items well

by just pressing one button, “Auto”. (e)VESA DDC2B function supported. (f)Audio function supported with 2 speakers.

II. Block diagram

DV172 consists of a head and a stand (base). The head consists of a LCD module with 4 lamps, a power board (include AC-DC, inverter power & audio circuit), a control board and an interface board. The block diagram is shown as below.

Inverter + AC-DC board +Audio circuit

TFT-LCD module with 4 CCFL(backlight)

Control board

AC input

EEPROM

Flash ROM

Scaler(Genesisgm5120)

Interface boardTo backlight

D-sub connector

Analog RGB signals

AC socket

Power sequence circuit

Scaler Power

ADC

DDC IC

Audio IN

Speaker Speaker

LVDS xtmr

DVI-D connector

TMDS rcvr

DDC IC

DVI-D(TMDS) signals

III. Circuit operation theory for electrical circuits in HEAD of DV172:

A.) Interface board diagram:


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Interface Board

A/D TMDS MCU Scaling OSD

To LCD module

EE

PRO

M

FLA

SH-

RO

M

Gm5120

DD

C D

DC

RX0

RX1

RX2

RXC

Red

Green

Blue

Vsync

Hsync (H+V)

SCL

SDA

DSCL

DSDA

(a) Circuit operation theory: (The scaling IC used in DV172 is Genesis gm5120) A basic operation theory for this interface board in Analog input signals processing, the scaling IC

inside A/D converter will convert analog input signals of Red, Green and Blue to 8 bits digital signals of Red, Green and Blue, and for interface board in DVI-D(TMDS) digital input signals processing, the scaling IC inside TMDS receiver will convert TMDS signals to 8 bits digital signals of Red, Green and Blue. Then no matter input signals Analog or DVI-D(TMDS) format are, they have been converted to 8 bits digital Red, Green and Blue signals, and the scaling IC inside MCU and scaling control circuit will start to do timing signal detecting and calculating to output the proper LCD panel signals to LCD panel circuit.

The timing signal detecting function in the scaling IC is to detect whether input H-sync, V-sync or digital pixel clock signals’ status have been changed by host PC system, then it will do short-time picture blanking, signal processing and converting again if input signals have been changed.

The scaling IC inside OSD circuit will be programmed to an OSD menu which can be showed on the screen to offer adjustable functions to end-users to control and adjust some picture settings by themselves.

After the scaling IC internal signal processing is done, it will output the digital RGB data, the H-sync, V-sync, pixel clock and DE(data enable) signal to LVDS transmitter and then to LCD panel driver circuit.

There are two kinds of EEPROM used in interface board, one is 24C02 which is used to store DDC


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data, we also call it, DDC IC, and another is to store OSD common data and those picture controlled and data.

Flash-Rom is to store the source code which will be accessed by the scaling IC inside MCU to run program.

(b) IC introduction: 1.) DDC (Display Data Channel) function: We use DDC IC to support DDC/2B function. DDC data is

stored in 24C02(EEPROM). Those data related to LCD monitor specification. PC can read them by “SDA” and “SCL”(“DSDA” & “DSCL” for DVI-D input port) serial communication for I2C communication for DDC2B.

2.) Gm5120 IC: There are A/DC, TMDS receiver, Scaling, OSD, MCU in the gm5120 IC. Scaling IC is revolutionary scaling engine, capable of expanding any source resolution to a highly uniform and sharp image or down scaling from UXGA, combined with the critically proven integrated 8 bit triple-ADC and patented Rapid-lock digital clock recovery system. It also support detect mode and DPMS control. MCU control unit, it controls all the functions of this interface board, just like the OSD display setting, the adjustable items, adjusted data storage, the external IIC communication, support DDC2B.

3.) EEPROM: All the adjustable data and user settings are stored in EEPROM (24C16). 4.) FLASH ROM: To store source code which will be accessed by Scaling IC inside MCU to run program.

B.) Power board diagram:

EMI Filter Rectifier and

filter

Isolation power

transformer

Rectifier and filter Audio Amp and

Pre-Amp

PWM controller Switching element

Feedback Isolation

Inverter circuit

Rectifier and filter

LDO regulator


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(a) EMI Filter This circuit (fig. 2) is designed to inhibit electrical and magnetic interference for meeting FCC, VDE,

VCCI standard requirements.

Fig. 2

(b) Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output

voltage is 1.4*(AC input). (See Fig.3)

Fig. 3

(c) Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored

energy is delivered to the secondary of transformer. R607, C607 and D601 is a snubber circuit. R615 is current sense resistor to control output power. (See Fig.4)


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Fig. 4

(d) Rectifier and filter

D701 and C703 are to produce DC output. L701 and C704 are to suppress high Frequency switching spikes. (See Fig.5)

Fig. 5

(e) PWM Controller The current mode control IC UC3842B is used to control PWM. When the VCC terminal of it gets

16V, IC601 turns on. +5V will be set up at Pin8 through soft start circuit, which includes R617, C611, D606 and D605. R616 and C610 generate a fixed frequency saw-tooth wave at Pin4.


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Fig. 6

(f) Feedback circuit

PC123 is a photo-coupler and TL431 is a shunt regulation. They are used to detect the output voltage change and be the primary and secondary isolation. When output voltage changes, the feedback voltage will be compared and duty cycle will be decided to control the correct output voltage. (See Fig.7)

Fig. 7


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(g) Audio circuit:

DC POWERINPUT

POWER ICTDA7496

AUDIOINPUTConnect with

8 ohm/2W Speaker

Connect withPC Audio output

The Audio circuit is in Power board. The Audio Speaker has DC Volume control, use 28mmX40mm Speaker (2W per channel), power supply from AC-DC board and Audio input from PC Audio output (Line Out).

1.)Power IC: Use ST POWER IC TDA7496.The IC are stereo Class AB output amplifiers with DC

Volume control. The devices are designed for use in TV and monitor, but are also suitable for battery-Fed portable recorders and radios. Use +15V from AC-DC Board and connect speaker to offer 1W per channel.

2.)DC Power Input: To supply +15V to be VCC source Voltage for TDA7496 and built-in AC-DC board. 3.)Audio Input: connect with PC Audio output in 3.5mm to 3.5mm signal line. 4.)Speaker: Use 8 ohm and 28mmX40mm speaker (2W/per channel) 5.)DC Volume Control: The voltage range is 1 – 5 V (From MC)


8


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(h) Inverter circuit: 1.) Block Diagram:

2.) General Specification Input Voltage: 15V Input Current: 2A max. ON/OFF Voltage: 3.3V PWM Duty: 3.3V/47KHz

Output Requirement: Max. Output Current: 15mA Min. Output Current: 6mA Lamp Working Voltage: 600Vrms Open Lamp Voltage: 1800Vrms Frequency: 55KHz

15Vin ON/OFF

switching

OSCILATOR

CIRCUIT

TRANSFORMER CCFL

PWM CONTROLLER

TL1451 CIRCUIT PROTECTION

AND DETECT

ON/OFF

BRT_ADJ


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3.)Circuit Operation Theorem 3.1) ON/OFF SWITCH

The turn-on voltage was controlled by R756 and R757.The inverter was turned on or off by the

switching transistors Q761 and Q757, Also regulator IC751 is control by Q761 and Q757 decide supply 15V to inverter part or instead.


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3.2) PWM Control circuit

TL1451 is a dual PWM controller.C765 and R765 decide the working frequency.BLT_ADJ signal is from control board, control pulse width then decide how much energy delivery to CCFL also decide CCFL brightness. Q741 and Q742 be the buffer to rise the drive capability and the totem poles circuit can improve a capable of driving for Q743.C770 decide the striking time delay.


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3.3) Oscillator Circuit

Royer circuit uses the characteristic of transformer saturation to oscillate. When the DC power inject, Q759 or Q760 will turns on, and the current Ic increases. After a period, the transistor will leave the

saturation status and Vce increase. The result causes the voltage of primary coil get lower. Finally the transistor turn off, and another transistor turn on. These statuses are repeated and the pin7 and pin8 of T751 will get a Sin Wave to turn on CCFL.

C.) Control board introduction: The main parts of the control board are a push button, and a led.

(a) Push button: It’s a simple switch function, pressing it for “ON” to do the auto adjustment function, releasing it for “OFF” to do nothing.

(b) Led: It indicates the DPMS status of this LCD monitor; green light means DPMS on (Normal operating condition). Amber light means DPMS off (Power off condition).

DV172 LCD Monitor Service Guide Alignment procedure

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Table of Contents

1. Alignment procedure (for function adjustment)..............................................................................2 A. Preparation: ......................................................................................................................2 B. Timing adjustment: (Analog only, it’s no need for DVI-D input source) ........................2 C. Auto color balance adjustment: (Analog only, it’s no need for DVI-D input source) .....2 D. Color adjustment: (Analog only)......................................................................................2 E. Writing EDID file: (Analog and DVI-D both) .................................................................3 F. Command definition for Auto Alignment:........................................................................3

2. Wire Dressing..................................................................................................................................4 3. Add Glue .........................................................................................................................................7 4.Touch Up..........................................................................................................................................8


2

1. Alignment procedure (for function adjustment) The list of necessary alignment for a LCD monitor:

Items Description Remark 1 Timing adjustment Preset timing 2 Auto color balance adjustment SVGA2 60Hz 3 Color temperature adjustment C1, C2 & C3 4 Writing EDID file Analog and Digital

A. Preparation:

1. Setup input timing to any preset modes, any patterns. 2. Enter factory mode (press “EXIT” & “ENTER” at the same time, then press “power” button to turn on monitor). 3. Move blue cursor into “BURN IN MODE” tag and select “YES” to enable burn-in mode. 4. Power off the monitor, then power on again. 5. Setup unit and keep it warm up at least 30 minutes.

B. Timing adjustment: (Analog only, it’s no need for DVI-D input source)

1. Enter factory mode (press “EXIT” & “Enter” at the same time, then press “power” button to turn on monitor). 2. Select timing from figure-1. The timing marked with star sign (*) have to be adjusted with Analog signals from

Chroma video pattern generator.. 3. Press AUTO key to run “AUTO adjustment” function. 4. Clear user area in EEPROM. 5. Check the phase of the image; if phase is not perfect adjust it to the best condition. 6. Adjust the settings to following values:

CONTRAST = 55 BRIGHTNESS = 90 OSD TIME = 20 VOLUME = 20 COLOR = USER

7. Press “EXIT” key until the “SAVE” shows on the OSD to save factory parameters and turn off the monitor power. 8. Turn on the power enter user mode.

C. Auto color balance adjustment: (Analog only, it’s no need for DVI-D input source)

1. Setup input timing SVGA2 (800x600@60Hz), pattern 1(crosshatch pattern with white color frame) with Analog signals from Chroma video pattern generator.

2. Enter factory mode (press “EXIT” & “Enter” at the same time, then press “power” button to turn on monitor). 3. Move blue cursor into “BURN IN MODE” tag and select “YES” to enable burn-in mode. 4. Set color pointer to USER mode 5. Press “ ▼ ” button to do white balance for auto color balance adjustment.

D. Color adjustment: (Analog only)

1. Setup input timing to any preset modes, pattern 41(full white color pattern) with Analog signals from Chroma video pattern generator.


3

2. Enter factory mode (press “EXIT” & “ENTER” at the same time, then press “power” button to turn on monitor). 3. Confirm auto color balance adjustment had already been done. 4. Measure each color temperature (C1, C2 & C3) by Minolta CA-110 (or equivalent equipment). 5. Two methods can be used to adjust RED, GREEN, BLUE value of each color temperature, C1, C2 & C3 to meet

following spec requirement, the 1st method is by using external PC and IIC alignment protocol to do automatic adjustment, and the 2nd method is by manually and must be in factory mode.

X+- 0.283+(-) 0.03 Color temperature (C1, 9300K set on OSD) Y+- 0.297+(-) 0.03



6. Turns off the monitor power.

E. Writing EDID file: (Analog and DVI-D both)

1. Setup a PC with DDC card. 2. Connect PC to monitor with a D-sub signal cable. 3. Please refer to the C212 for the correct EDID file. 4. Runs the writing program to write the EDID file into EEPROM for analog input. 5. Read both EEPROM data and confirm if it’s matched with the C212 definition. 6. Repeat the above step 1 to step 5 with DVI-D signal cable connected.

F. Command definition for Auto Alignment:

1. PC Host will send 0x7C IIC slave address and then following 4 bytes command I2C Send Command Byte1 Byte2 Byte3 Byte4 Change Color Temperature to C1 CC 1 XX checksum Change Color Temperature to C2 CC 2 XX checksum Change Color Temperature to C3 CC 3 XX checksum Change C/T to User CC 4 XX checksum User mode to factory mode 1A 5A XX checksum Auto Color (Offset1, Offset2, Gain) 1B 5A XX checksum Factory mode to User mode 1E 5A XX checksum Clear user area data 1F 5A XX checksum Off burn in mode CE 2 XX checksum Change language setting 66 0~5 XX checksum

Note A: Byte4(Checksum) = Byte1 + Byte2 + Byte3 Note B: Data = The value write to MCU Note C: XX = don't care, any value(<=0xFF). Note D: The Byte-2 definition of “Change Language Setting” is as below,

0=DE, 1=EN, 2=ES, 3=FR, 4=IT, 5=JA 2. When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes)

Return Code R-Byte1 R-Byte2 Checksum error code FC AA Normal return code the above Byte3 (/data) FC If normal return code is exact FCh FC CF


4

3. The Table is for alignment machine to read data from EEPROM to check if the alignment process and write data are correct.

I2C Send Command Byte1 Byte2 Byte3 Byte4 Read EEPROM Contrast A3 92 XX checksum Read EEPROM Brightness A3 93 XX checksum Read EEPROM C/T Point A3 94 XX checksum Read EEPROM OSD-Hpos A3 95 XX checksum Read EEPROM OSD-Vpos A3 96 XX checksum Read EEPROM Language A3 97 XX checksum Read EEPROM OSD Timer A3 98 XX checksum Read EEPROM Volume A3 99 XX Checksum

Figure-1: Preset Timing modes list




Remark Actual display

resolution

640x350 31.47(P) 70.08(N) 25.17 DOS 1280x943

720x400 31.47(N) 70.08(P) 28.32 DOS 640x480 31.47(N) 60.00(N) 25.18 DOS 640x480 35.00(N) 67.00(N) 30.24 Macintosh 640x480 37.86(N) 72.80(N) 31.5 VESA 640x480 37.50(N) 75.00(N) 31.5 VESA 800x600 37.88(P) 60.32(P) 40.00 VESA 800x600 48.08(P) 72.19(P) 50.00 VESA 800x600 46.86(P) 75.00(P) 49.50 VESA 832X624 49.72(N) 74.55(N) 57.29 Macintosh 1024x768 48.36(N) 60.00(N) 65.00 VESA 1024x768 56.48(N) 70.10(N) 75.00 VESA 1024x768 60.02(P) 75.00(P) 78.75 VESA 1024X768 60.24(N) 74.93(N) 80.00 Macintosh 1152x864 67.50(P) 75.00(P) 108.00 VESA 1152x870 68.68(N) 75.06(N) 100.00 Macintosh 1152x900 61.80(N) 66.00(N) 94.50 SUN 66 1152x900 71.81(N) 76.14(N) 108.00 SUN 1280x1024 64.00(P) 60.00(P) 108.00 VESA 1280x1024 75.83(N) 71.53(N) 128.00 IBM1 1280x1024 80.00(P) 75.00(P) 135.00 VESA 1280x1024 81.18(N) 76.16(N) 135.09 SPARC2

Full screen

1280x1024

2. Wire Dressing

A point for attention is marked in yellow circle and wire allocation are shown as below: a.) Internal structure of LCD monitor


5

b.) Speaker wire


6

c.) LVDS wire

d.) Power grounding


7

e.) Control wire

3. Add Glue

The below attached figure shows the location of added glue component. a.)The location of add glue component have L602, L603, C605, C603, C604, C615, C703, C704, and C707.

b.) CN601, C605, Q601, T601, D701, D7021 and IC701.


8

4.Touch Up

Remark: The manufacturing site should base on their experience and pass the necessary testing to add or reduce some touchup points.

DV172 LCD Monitor Service Guide Trouble Shooting

1

1. No Display or display is unstable: 1.1 Interface Board:

Y

N

N

Y N

Y

N

Y N

Y

N

Y

N

Y

2. BUTTON function:

No picture or picture unstable

Power off? Turn On Power

Check Panel or replace it

Does Cable plug in connector?

Plug all wire then turn on power again

Is power stable? Check J5 connector or power BD

Is LED light green? Check control BD

Check (U3) DDC data of digital input

Check crystal (Y1) CKT or replace it Does crystal work correctly?

Check 7414 related circuit or replace it Does 7414 (U2) work well?

Cables used in DV172:

(1) Internal:

(a)LVDS wire to panel:J6 & J7

(b)Wire to control BD: J4

(2) External:

Signal cable: J1 and J2

Is DVI signal well?


2

2.1 Control Board OSD is not working Yes

Is control BD connecting? No Plug control BD then retry

Yes

Is bottom switch normally? Yes Replace control BD then retry

No

Replace Control BD

Is OSD working??

No

Check Interface BD


3

3. OSD function:

OSD doesn’t work

Is control BD working? No Replace control BD

Check interface BD


4

4.Power Board

Backlight didn't shine

LED shined?

3.3V existed? IS I/F board connected?

IC751 PIN 9 IS 15V?Replace Q761

PWM existed?(BLT_ADJ)

Plug CN701 again orchecking I/F BD

Turn on level existed?(BLT_ON)

Insert them againCheck CN752, CN753was pluged properly?

Plug CN701 again orchecking I/F BD

Replace IC751,Q751

Replace new fuse

Replace new fuse

Check IC701 OK?

Checking F601Broke?

Check IC601 Vccexisted?

Replace IC602,IC702,D701 or check

I/F BD

Replace IC701

Replace new fuse

ReplaceIC601,Q602,Q603

R602

Y

N

N

N

N

Y

Y

Y

Y

N

Y

Y N

N

Y

Y

Y

N

N

N

1

Model: DV172

No. PART NO. DESCRIPTION LOCATION1 55.L5301.021 PCBA I/F BD MAXDATA2 09.10612.01B CAPACITOR EL 10U 25V M RF2.5 C69 C72 C79 C853 09.22612.01B CAP EL 22U 25V M RF2.5 C14 C17 C23 C28 C33 C40 C413 09.22612.01B CAP EL 22U 25V M RF2.5 C88 C90 C97 C994 09.47612.01V CAP EL 47U 25V M RT2.5 C835 20.22003.024 CONN RECE DVI-A 24+6P RT MOLE J26 20.24012.A15 CONN D FML 3R15P RT BLU S WO/ J17 20.60089.108 HEAD BLK 1R 8P D2 3S H6 J78 20.60091.109 HEAD BLK 1R9P RT D2 3S H4.8 J49 20.72060.207 HEAD FML 2R14P D2.54 H8.4 J5

10 45.10101.071 LABEL(B)SERIAL ART 12*5 ALL11 47.L5305.001 GASKET 6X10X2T 12 55.L5301.M21 PCBA I/F BD MAXDATA M/I13 71.05120.00E IC LCD CTRL GM5120 PQFP 208P U414 71.06383.00I IC LVDS 24B THC63LVDM83A TSSO IC1 IC215 72.02402.C01 IC EEPROM AT24C02N-10SI-1.8SO U1 U316 72.02416.N01 IC EEPROM AT24C16N-10SI-1.8SO U717 73.07414.061 IC CMOS 74LVC14A SO-N 14P U218 74.01206.07C IC LDO IRU1206-25CY SOT-223 3 U519 74.06300.C3B IC RESET V6300C LO-2.8V SOT23 U920 72.39010.V33 IC FLASH SST39VF010-70 PLCC32 U621 55.L5302.021 PCBA SPS BD FR-1 22 04.01451.070 IC PWM CTRL TL1451ACN DIP 16P IC75123 04.03842.044 IC VR UC3842BN DIP 8P IC60124 04.07496.010 IC AMP TDA7496 SIP 15P IC50125 05.00123.010 IC OPTO PC123F1 DIP 4P IC60226 06.05707.010 XTOR SW 2SC5707 NPN TP 3P Q740 Q760 Q739 Q75927 06.09024.020 FET MOS IRFU9024 PC TO-251AA Q743 Q75128 06.2R060.151 DIODE BRI 2KBP06ML-530 600V 2 BD60129 06.3R006.110 DIODE S.B. SB360 60V 3A DO-20 D751 D76130 08.2703M.34D CAP DISC 27P3KV J SL 125 RF7. C736 C737 C756 C75731 08.33216.354 CAP DISC Y1 3300P 250V RF10 D C603 C60432 08.47216.354 CAP DISC Y1 4700P 250V RF10 D C61533 09.1071M.L84 CAP EL 100U 450V M 105 25*25S C60534 09.10813.L9C CAP EL 1000U35V RF5 L 13*25EL C703 C707 C70435 09.1081D.09C CAP EL1000U16V RF5 105C 10*20 C508 C71036 11.2241N.11E CAP X 0.22U U/V/FI 275V RF15 C60237 13.10135.07E RES MOFM 100 2W J AF15 MINI R62538 13.3R335.07E RES MOFM 3.3 J 2W AF15 MINI R51339 13.68335.07E RES MOFM 68K J 2W AF15 MINI R607 R60240 13.R2235.07E RES MOFM 0.22 J 2W AF15 MINI R61541 17.60021.8R0 THERM 8 NTC 11.5D TR60142 19.20267.001 XFORM PWR 450UH EI-30 T60143 19.26038.001 XFORM INVERT 9.5UH EE19 T752 T754 T753 T75144 19.40091.011 CHOKE 180UH T68-26 L602 L603

2

45 19.40155.001 CHOK 2.7UH DR6*10 L701 L70246 19.40179.001 CHOKE 71UH DR10*8 L752 L75147 19.42008.011 LINE FILTER 30MH EE25 L60148 20.60091.104 HEAD BLK 1R4P RT D2 3S H4.8 CN50249 20.63174.104 HEAD ML 1R4P(-1#3) RT D4 4S H CN753 CN75250 21.62052.207 HEAD ML 2R14P L RT D2.54 L10. CN70151 22.10165.081 SKT EARJACK RT7P/PT284C BLU JK50352 25.70029.001 BEAD 3T D6*10 Z580/100M L606 L60753 26.12001.932 FUSE2A250V CERA ST20 T/LA RF2 F60154 55.L5302.A21 PCBA SPS BD FR-1 55 60.L4606.001 ASSY HSK+UGF10DCT D701 D702156 60.L5308.011 ASSY AC SKT+WIRE+CORE E171FPB CN60157 60.L5309.001 ASSY HSK+G960T IC70158 55.L5303.031 PCBA CTRL BD FR-1 59 06.066GY.14X LED D5*8.3 GRN/YEL KTL-66GY-1 LD860160 22.40069.431 SW TACT 4.75MM RT TSVR-2 SW8601 SW8602 SW8603 SW8604 SW8605 SW8606

61 45.00091.021 LABEL ART 25*4.5 ALL62 48.L5303.A00 PCB CTRL BD FR-1 63 50.L5301.011 WIRE 9/10P 1007#26 280MM NO-C CN860164 23.4L530.001 SPK*2 8 OHM 2W 470/150MM FP7565 31.L5308.001 SPG-G SUS301 0.1T 66 33.L5306.001 BKT PNL SECC0.8T 67 34.L3703.001 SPG SUS301 0.1T 68 34.L5302.002 SHD SPTE0.4T 69 38.04121.001 TAPE 15*0.05MM KAPTON YEL70 40.L3303.171 LBL SPEC LR DIAMOND71 42.L5321.001 WIRE HLD ABS 002 I72 42.L5325.001 WIRE-CLIP NYLON66 94V0 E171FP73 42.L5326.001 MYLAR PET 35X20X0.4T E171FPB74 47.L5306.001 AL TAPE 35X45 0.08T 75 47.L5307.001 AL TAPE 70X45 0.08T 76 50.L5302.001 WIRE 20+8/30P 1571 #28 120MM77 56.91L53.001 LCDM 17" M170EN05/AUO78 60.L5307.013 ASSY UC ABS 002 DVI79 60.L5310.002 ASSY COLUMN ABSHB 002 B80 60.L5316.001 ASSY BZL ABS HB 002 MEA81 60.L5320.001 ASSY BASE W/PACK MEA82 27.81318.011 CORD SAA #18*3C 10A 250V AUS83 42.20019.002 BAG PE 250*350 LD 84 42.L0811.002 PE-HD BAG 600*650*0.05T 24LNG85 44.L4001.131 CTN B DIAMOND(DV172)86 45.00050.002 LABEL CTN ART 105*82 ALL(KB)87 46.L0301.001 CARD WARR TFT LCD88 47.L5301.002 CSN L EPS 89 47.L5302.002 CSN R EPS 90 49.L5303.001 INSTRUCTION MANUAL DV172 91 50.74405.201 CABLE AUDIO 284C/577C 002 14092 50.L2308.201 SIGNAL/C 15/15P W/C 002/93 50.L2508.201 SIGNAL/C DUAL DVI-D/DVI-D 200

3

94 53.L5304.001 F DISK MEA DV172

1

Model: DV172B (B = Black Cosmetic’s) NO. PART NO. DESCRIPTION LOCATION=== ============ ============================== =====================================

1 55.L5301.021 PCBA I/F BD MAXDATA2 09.10612.01B CAPACITOR EL 10U 25V M RF2.5 C69 C72 C79 C853 09.22612.01B CAP EL 22U 25V M RF2.5 C14 C17 C23 C28 C33 C40 C413 09.22612.01B CAP EL 22U 25V M RF2.5 C88 C90 C97 C994 09.47612.01V CAP EL 47U 25V M RT2.5 C835 20.22003.024 CONN RECE DVI-A 24+6P RT MOLE J26 20.24012.A15 CONN D FML 3R15P RT BLU S WO/ J17 20.60089.108 HEAD BLK 1R 8P D2 3S H6 J78 20.60091.109 HEAD BLK 1R9P RT D2 3S H4.8 J49 20.72060.207 HEAD FML 2R14P D2.54 H8.4 J5

10 45.10101.071 LABEL(B)SERIAL ART 12*5 ALL11 47.L5305.001 GASKET 6X10X2T 12 55.L5301.M21 PCBA I/F BD MAXDATA M/I13 71.05120.00E IC LCD CTRL GM5120 PQFP 208P U414 71.06383.00I IC LVDS 24B THC63LVDM83A TSSO IC1 IC215 72.02402.C01 IC EEPROM AT24C02N-10SI-1.8SO U1 U316 72.02416.N01 IC EEPROM AT24C16N-10SI-1.8SO U717 73.07414.061 IC CMOS 74LVC14A SO-N 14P U218 74.01206.07C IC LDO IRU1206-25CY SOT-223 3 U519 74.06300.C3B IC RESET V6300C LO-2.8V SOT23 U920 72.39010.V33 IC FLASH SST39VF010-70 PLCC32 U621 55.L5302.021 PCBA SPS BD FR-1 22 04.01451.070 IC PWM CTRL TL1451ACN DIP 16P IC75123 04.03842.044 IC VR UC3842BN DIP 8P IC60124 04.07496.010 IC AMP TDA7496 SIP 15P IC50125 05.00123.010 IC OPTO PC123F1 DIP 4P IC60226 06.05707.010 XTOR SW 2SC5707 NPN TP 3P Q740 Q760 Q739 Q75927 06.09024.020 FET MOS IRFU9024 PC TO-251AA Q743 Q75128 06.2R060.151 DIODE BRI 2KBP06ML-530 600V 2 BD60129 06.3R006.110 DIODE S.B. SB360 60V 3A DO-20 D751 D76130 08.2703M.34D CAP DISC 27P3KV J SL 125 RF7. C736 C737 C756 C75731 08.33216.354 CAP DISC Y1 3300P 250V RF10 D C603 C60432 08.47216.354 CAP DISC Y1 4700P 250V RF10 D C61533 09.1071M.L84 CAP EL 100U 450V M 105 25*25S C60534 09.10813.L9C CAP EL 1000U35V RF5 L 13*25EL C703 C707 C70435 09.1081D.09C CAP EL1000U16V RF5 105C 10*20 C508 C71036 11.2241N.11E CAP X 0.22U U/V/FI 275V RF15 C60237 13.10135.07E RES MOFM 100 2W J AF15 MINI R62538 13.3R335.07E RES MOFM 3.3 J 2W AF15 MINI R51339 13.68335.07E RES MOFM 68K J 2W AF15 MINI R607 R60240 13.R2235.07E RES MOFM 0.22 J 2W AF15 MINI R61541 17.60021.8R0 THERM 8 NTC 11.5D TR60142 19.20267.001 XFORM PWR 450UH EI-30 T601

2

43 19.26038.001 XFORM INVERT 9.5UH EE19 T752 T754 T753 T75144 19.40091.011 CHOKE 180UH T68-26 L602 L60345 19.40155.001 CHOK 2.7UH DR6*10 L701 L70246 19.40179.001 CHOKE 71UH DR10*8 L752 L75147 19.42008.011 LINE FILTER 30MH EE25 L60148 20.60091.104 HEAD BLK 1R4P RT D2 3S H4.8 CN50249 20.63174.104 HEAD ML 1R4P(-1#3) RT D4 4S H CN753 CN75250 21.62052.207 HEAD ML 2R14P L RT D2.54 L10. CN70151 22.10165.081 SKT EARJACK RT7P/PT284C BLU JK50352 25.70029.001 BEAD 3T D6*10 Z580/100M L606 L60753 26.12001.932 FUSE2A250V CERA ST20 T/LA RF2 F60154 55.L5302.A21 PCBA SPS BD FR-1 55 60.L4605.001 ASSY HSK+STP7NC70ZFP Q60156 60.L4606.001 ASSY HSK+UGF10DCT D701 D702157 60.L5308.011 ASSY AC SKT+WIRE+CORE E171FPB CN60158 60.L5309.001 ASSY HSK+G960T IC70159 55.L5303.031 PCBA CTRL BD FR-1 60 06.066GY.14X LED D5*8.3 GRN/YEL KTL-66GY-1 LD860161 22.40069.431 SW TACT 4.75MM RT TSVR-2 SW8601 SW8602 SW8603 SW8604 SW8605 SW8606

62 45.00091.021 LABEL ART 25*4.5 ALL63 48.L5303.A00 PCB CTRL BD FR-1 64 50.L5301.011 WIRE 9/10P 1007#26 280MM NO-C CN860165 23.4L530.001 SPK*2 8 OHM 2W 470/150MM FP7566 31.L5308.001 SPG-G SUS301 0.1T 67 33.L5306.001 BKT PNL SECC0.8T AU(DVI68 34.L3703.001 SPG SUS301 0.1T 69 34.L5302.002 SHD SPTE0.4T AUO70 38.04121.001 TAPE 15*0.05MM KAPTON YEL71 40.L3303.171 LBL SPEC LR DIAMOND72 42.L5321.001 WIRE HLD ABS 002 73 42.L5325.001 WIRE-CLIP NYLON66 94V0 E171FP74 42.L5326.001 MYLAR PET 35X20X0.4T E171FPB75 47.L5306.001 AL TAPE 35X45 0.08T 76 47.L5307.001 AL TAPE 70X45 0.08T 77 50.L5302.001 WIRE 20+8/30P 1571 #28 120MM78 56.91L53.001 LCDM 17" M170EN05/AUO79 60.L5307.023 ASSY UC ABSHB P861 M-DV80 60.L5310.032 ASSY COLUMN ABSHB P861 81 60.L5316.011 ASSY BZL ABSHB P861 MEA82 60.L5320.011 ASSY BASE W/P P861 MEA83 27.01318.081 CORD 3ASL10A250V1800MMAUS W/S84 42.20019.002 BAG PE 250*350 LD 85 42.L0811.002 PE-HD BAG 600*650*0.05T 24LNG86 44.L4001.131 CTN B DIAMOND(DV172)87 45.00050.002 LABEL CTN ART 105*82 ALL(KB)88 45.75801.021 LBL BLACK 100*50 DIAMOND89 46.L0301.001 CARD WARR TFT LCD

3

90 47.L5301.002 CSN L EPS 91 47.L5302.002 CSN R EPS 92 49.L5303.001 INSTRUCTION MANUAL DV172 93 50.74405.201 CABLE AUDIO 284C/577C 002 14094 50.L2308.501 SIGNAL/C 15/15P W/C BLK95 50.L2508.501 SIGNAL/C DUAL DVI-D/DVI-D 20096 53.L5304.001 F DISK MEA DV172

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+5V+5V

+3.3V

+3.3V

+3.3V

+3.3V

ER7

ER5

EG0

EG1

EG2

EG6

EG7

EG3

EG4

EG5

EB0

EB6

EB7

EB1

EB2

EB3

EB4

EB5

DHS_TTL

DVS_TTL

DEN_TTL

DCLK_TTL

ER6

ER0

ER1

ER2

ER3

ER4

E0-

E0+

E1-

E1+

E2-

E2+

ECLK-

ECLK+

E3-

E3+

O3+

OR3

O0-

DHS_TTL

OG2

OB0

DVS_TTL

OG0

OR6

OG5

OR4

O1+

O3-

OCLK-

OB2

OG7

OR0

OB6

O2-

DEN_TTL

OB5

OG6

OR1

OR5

O2+

OB7

OR2

OG1

OB1

DCLK_TTL

OG3

OB4

OCLK+

O0+

OB3

O1-

OR7

OG4

LVDS_EN

LCD_PW

E3+O0-O0+O1-O1+O2-O2+

OCLK-OCLK+

O3-O3+

E3-ECLK+ECLK-E2+E2-E1+E1-E0+E0-

LCD_PW

LCD_ON

Interface Board

DV172

Dimand View Monitor

"L" Falling edge trigger"H" Rising edge trigger

C960.1U16V K

J6

20D0017210

1234567891011121314151617181920

L7

BEAD

L13

BEAD

+ C8510U16V

12

L11

BEAD

C950.1U

16V K

C910.1U

16V K

+ C8822U16V

12

+ C9922U16V

12

C840.1U16V K

R61100K

C980.1U16V K

C870.1U16V K

T.L.

IC1

THC63LVDM83A

VCC1

TXIN52

TXIN63

TXIN74

GND5

TXIN86

TXIN97

TXIN108

VCC9

TXIN1110

TXIN1211

TXIN1312

GND13

TXIN1414

TXIN1515

TXIN1616

VCC17

TXIN1718

TXIN1819

TXIN1920

GND21

TXIN2022

TXIN2123

TXIN2224

TXIN2325

VCC26

TXIN2427

TXIN2528

TXIN4 56

TXIN3 55

TXIN2 54

GND 53

TXIN1 52

TXIN0 51

TXIN27 50

LVDS GND 49

TXOUT0- 48

TXOUT0+ 47

TXOUT1- 46

TXOUT1+ 45

LVDS VCC 44

LVDS GND 43

TXOUT2- 42

TXOUT2+ 41

TXCLK OUT- 40

TXCLK OUT+ 39

TXOUT3- 38

TXOUT3+ 37

LVDS GND 36

PLL GND 35

PLL VCC 34

PLL GND 33

PWR DWM 32

TXCLK IN 31

TXIN26 30

GND 29

C940.1U

16V K

+ C8347U16V

12

C860.1U

16V K

R66OPEN

L8

BEAD

R6220K

L14

BEAD

+ C9022U16V

12

C1000.1U

16V K

T.L.

U8

GF4435

S1

S2

S3

G4

D 8

D 7

D 6

D 5

C820.1U

16V K

R67

10K

R65

10K

+ C9722U16V

12

L12

BEAD

T.L.

IC2

THC63LVDM83A

VCC1

TXIN52

TXIN63

TXIN74

GND5

TXIN86

TXIN97

TXIN108

VCC9

TXIN1110

TXIN1211

TXIN1312

GND13

TXIN1414

TXIN1515

TXIN1616

VCC17

TXIN1718

TXIN1819

TXIN1920

GND21

TXIN2022

TXIN2123

TXIN2224

TXIN2325

VCC26

TXIN2427

TXIN2528

TXIN4 56

TXIN3 55

TXIN2 54

GND 53

TXIN1 52

TXIN0 51

TXIN27 50

LVDS GND 49

TXOUT0- 48

TXOUT0+ 47

TXOUT1- 46

TXOUT1+ 45

LVDS VCC 44

LVDS GND 43

TXOUT2- 42

TXOUT2+ 41

TXCLK OUT- 40

TXCLK OUT+ 39

TXOUT3- 38

TXOUT3+ 37

LVDS GND 36

PLL GND 35

PLL VCC 34

PLL GND 33

PWR DWM 32

TXCLK IN 31

TXIN26 30

GND 29

C890.1U16V K

J7

2060089108

12345678

R64OPEN

Q12N3904

1

32

R6310K

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

+3.3V

+5V

+3.3V+2.5V

LED_GRN

KEY_ENTER

KEY_LEFT

LED_ORG

KEY_RIGHT

KEY_EXITKEY_AUTO

SOFT_SW

LCD_ON

BL_ONBRT_ADJ

VOLUMEVOL_ON/OFF

Interface Board

DV172

Dimand View Monitor

PWM output first, it must be "H" when no work.

OPENOPEN

L22

C750.1U50V Z

C64100P50V J

R57 1K

+ C7910U16V

12

U5IRU1206-25CY

IN1

GN

D2

OUT 3

R54 100

U2E

74LVC14A

11 10

147

C730.1U50V Z

C63100P50V J

J5

20.72060.207

1234567891011121314

C810.1U50V Z

L23

R55 1KL20

C700.1U K

C62100P50V J

C670.1U

16V K

C760.1U50V Z

R60 1K

C61100P50V J

+ C7210U16V

12

R58 1K

L19

C680.1U

16V K

+ C6910U16V

12

C66100P50V J

L24

C710.1U K

L21R56 1K

J4

2060091109

123456789

C740.1U50V Z

L15

L18

R23

0

C65100P50V J

U2F

74LVC14A

13 12

147

C770.1U50V Z

C780.1U50V Z

R59 1K

R53 200

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

FLASH_WE

RMADDR[0..15]

RM

DA

TA[0

..7]

RMADDR5

RMDATA0RMADDR7

RMADDR11

RMADDR9

RMADDR10TXD

RMADDR11

RMDATA7

RMADDR14

RMDATA7

RMDATA2

SDA

SDA

RMADDR5

RMADDR10

RMDATA6RMADDR2RMDATA5RMADDR12

BANK

RMADDR1

RMADDR8

RMADDR1

RMADDR2

RMADDR8

RMDATA1

SCL

RMDATA1

RMDATA3

RMADDR3

RMADDR14RMDATA3

RMDATA0

RMADDR6RMADDR15

RMADDR13

ROM_OEn

RMADDR6

RMADDR7

RXD

RMDATA2

RMADDR12

RMDATA6

RMDATA4

RMADDR3

RMDATA4

RMADDR4RMADDR9

RMADDR13

RMADDR15

RMADDR8

SCLRMDATA5

RMADDR14

BANK

RMADDR9

RMADDR0

RMADDR0

RMADDR4FLASH_WE

3.3V_DDDS3.3V_SDDS

3.3V_RDDS

3.3V_RGB

3.3V_DVI

2.5V_RXPL

TXDRXD

D EN

DCLK

TCLKXTAL

3.3V_DVI

D HSDVS

Reset

+3.3V

+2.5V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+2.5V

+2.5V +3.3V

+3.3V+3.3V

+3.3V +3.3V +3.3V +3.3V

+3.3V

+3.3V

GREEN-P.2BLUE+P.2BLUE-P.2

VSP.2HSP.2

RED+P.2RED-P.2

GREEN+P.2

BRT_ADJ

BL_ON

DSUB_SCLDSUB_SDALED_ORG

LED_GRN

VOL_ON/OFF

SOFT_SWKEY_ENTER

KEY_AUTO

KEY_LEFTKEY_RIGHT

VOLUME

DCLK_TTL

DEN_TTL

DVS_TTL

OB7OB6OB5OB4OB3OB2OB1OB0

OG7OG6OG5OG4OG3OG2OG1OG0

OR7OR6OR5OR4OR3OR2OR1OR0

EB7EB6EB5EB4EB3EB2EB1EB0

EG7EG6EG5EG4EG3EG2EG1EG0

ER7ER6ER5ER4ER3ER2ER1ER0

LVDS_EN

KEY_EXITLCD_ON

RXCPP.2RXCMP.2RX2PP.2RX2MP.2RX1PP.2RX1MP.2

RX0MP.2RX0PP.2

DHS_TTL

Cable-Detect

Interface Board

DV172

Dimand View MonitorROM_ADDR9

Available for reading from a status register

1

ROM_ADDR7 If using 6-wire host protocol, program this bit to 1

OCM_START

GPIO(22:16) is on "Host Port" pins

x

HOST_PORT_EN

1 = All 48K of ROM is in external ROM

0

Reserved

HOST_PROTOCOL

x

ROM_ADDR8

0 = XTAL and TCLK pins are connected

1

DESCRIPTION

xROM_ADDR6

1

Available for reading from a status register

NAME

x

0

ADDRESS SET

USER_BITS(4:0)

Determines polarity of HCLK signal

OCM_ROM_CFG(1)

If using 6-wire host protocol, program this bit to 0

USER_BITS(7:5)

ROM_ADDR14

Re setCircuit

BOOTSTRAP SIGNALS

SCLPOL

ROM_ADDR13

FLASH/ Prom-Jet Socket

ROM_ADDR(4:0)

32-Pin PLCC Socket

ROM_ADDR(12:10)

ROM_ADDR5

OSC_SEL

1 = OCM becomes active after OCM_CLK is stable Close to respective power PinsClose to respective power Pins

RS232

OPEN OPEN

OPEN

Re setCircuit

OPEN

OPEN

C490.1U

16V K

+ C1422U16V

12

C500.1U

16V K

Q22N3906

32

1

C2147POPEN

C580.1U

16V K

C160.1U

16V K

R69 51K

+ C2822U16V

12

C340.1U

16V K

C550.1U

16V K

R242.7K

R50

10K

C180.1U

16V K

CN1

22P OPEN

81

72

63

54

RN10

1001234

8765

J3

CON_3P_S123

R46

10K

R34

10K

R99 4.7K

+ C4122U16V

12

CN5

22P OPEN

81

72

63

54

CN1222P OPEN

81

72

63

54

RN7

1001234

8765

R21 0

R33 0

C570.1U

16V K

CN2

22P OPEN

81

72

63

54

CN1022P OPEN

81

72

63

54

RN3

1001234

8765

R40

10K

+ C3322U16V

12

R7010K

C510.1U

16V K

C540.1U

16V K

L1

BEAD

R44

10K

CN822P OPEN

81

72

63

54

R36 1KF

C250.1U

16V K

C150.1U

16V K

C36 4.7P J

C310.1U

16V K

R35

10K

RN4

1001234

8765

C200.1U

16V K

L2

BEAD

C530.1U

16V K

R47

10K

C390.1U

16V K

C260.1U

16V K

C300.1U

16V K

Int_Test

U4

GM5120

710212000ERED+171RED-170GREEN+167GREEN-166BLUE+163BLUE-162

RX2+179RX2-180RX1+185RX1-186RX0+191RX0-192

XTAL151 TCLK152

GPIO0/PWM0 40GPIO1/PWM1 41GPIO2/PWM2 42GPIO3/TIMER1 43

GPIO4/UART_D1 44GPIO5/UART_D0 45

GPIO6/EXTCLK 46GPIO7 47

GPIO10/TCON_ROE3 49

GPIO11 50

GPIO12 51GPIO13 52

DCLK/TCON_OCLK 118DEN/TCON_ECLK 115

DVS/TCON_FSYNC 117DHS/TCON_LP 116

RXC-195 RXC+194

REXT174

TCON_OPOL 120TCON_OINV 121TCON_ESP 122

TCON_EPOL 123TCON_EINV 124

TCON_RSP2 125TCON_RSP3 126TCON_RCLK 127

TCON_ROE 128

GPIO20/HDATA3206GPIO19/HDATA2207GPIO18/HDATA1208GPIO17/HDATA01GPIO16/HFS205GPIO22/HCLK204

RESETn5GPIO21/IRQn4

DDC_SCL6DDC_SDA7

GPIO9/TCON_ROE2 48

GPIO8/IRQINn 39

CLKOUT 201

ROM_ADDR025 ROM_ADDR124 ROM_ADDR223 ROM_ADDR322 ROM_ADDR419 ROM_ADDR518 ROM_ADDR617 ROM_ADDR716

ROM_ADDR815

ROM_ADDR158

ROM_DATA035 ROM_DATA134 ROM_DATA233 ROM_DATA332 ROM_DATA431 ROM_DATA530 ROM_DATA629 ROM_DATA728

ROM_ADDR149ROM_ADDR1310

ROM_ADDR914

ROM_ADDR1112ROM_ADDR1013

ROM_ADDR1211

ROM_OEn36

VD

D1_

AD

C_2

.515

5V

DD

2_A

DC

_2.5

153

AGND_GREEN165AGND_RED169

AGND_BLUE161 AGND_ADC158 SGND_ADC157

AGND_RX2178

RV

DD

2R

VD

D20

RV

DD

53R

VD

D67

RV

DD

81R

VD

D97

RV

DD

111

RV

DD

129

CV

DD

26C

VD

D88

CV

DD

134

CV

DD

203

VD

D_R

X2_

2.5

176

PPWR113PBIAS114

AGND_IMB175

VD

D_R

X1_

2.5

182

AGND_RX1184

VD

D_R

X0_

2.5

188

AGND_RX0190AGND_RXC197AGND_RXPLL198

VDD_RXPLL_2.5199

AV

DD

_RP

LL15

0

AVSS_RPLL149

VD

D_D

PLL

_3.3

148

AV

DD

_SD

DS

146

VD

D_S

DD

S_3

.314

4

AV

DD

_DD

DS

141

VD

D_D

DD

S_3

.313

9

AVSS_SDDS145AVSS_DDDS140

HSYNC137VSYNC136

RV

SS

3R

VS

S21

RV

SS

38R

VS

S54

RV

SS

68R

VS

S82

RV

SS

98R

VS

S11

2R

VS

S13

0

CV

SS

89C

VS

S13

3

CV

SS

202

CV

SS

135

GN

D1_

AD

C15

6G

ND

2_A

DC

154

GN

D_R

X2

177

GN

D_R

X1

183

GN

D_R

X0

189

VS

S_D

PLL

147

VS

S_S

DD

S14

3V

SS

_DD

DS

138

N/C 200

ADC_TEST159

PD6/ER6 61PD7/ER7 62

PD10/EG2 65PD11/EG3 66PD12/EG4 69PD13/EG5 70PD14/EG6 71PD15/EG7 72

PD33/OG1 94PD32/OG0 93

PD18/EB2 75PD19/EB3 76PD20/EB4 77PD21/EB5 78PD22/EB6 79PD23/EB7 80

PD17/EB1 74PD16/EB0 73

PD26/OR2 85PD27/OR3 86PD28/OR4 87PD29/OR5 90PD30/OR6 91PD31/OR7 92

PD25/OR1 84PD24/OR0 83

PD34/OG2 95PD35/OG3 96PD36/OG4 99PD37/OG5 100PD38/OG6 101PD39/OG7 102

PD9/EG1 64PD8/EG0 63

PD42/OB2 105PD43/OB3 106PD44/OB4 107PD45/OB5 108PD46/OB6 109PD47/OB7 110

PD41/OB1 104PD40/OB0 103

TCON_OSP 119

CV

SS

27

Reserved 131

N/C 142Reserved 132

AVDD_IMB173AVDD_RX2181AVDD_RX1187AVDD_RX0193AVDD_RXC196

AVDD_BLUE164AVDD_GREEN168AVDD_RED172

AVDD_ADC160

PD5/ER5 60PD4/ER4 59PD3/ER3 58PD2/ER2 57PD1/ER1 56PD0/ER0 55

RV

DD

37

C600.1U

16V K

R27

10K

R5210K

C1011U10V Z

RN1

1001234

8765

U7

AT24C16 16K

NC 1NC 2NC 3

GND 4SDA5 SCL6 WP7 VCC8

RN11

1001234

8765

C520.1U

16V K

C38

0.1U16V K

RN8

1001234

8765

C370.1U16V K

R25

10K

C35 4.7P J

R51

10K

R68

10K

RN13

1001234

8765

R29

100K

R48

10K

+ C2322U16V

12

C290.1U

16V K

R42

10K

CN3

22P OPEN

81

72

63

54

L6

BEAD

R38

10K

U9

V6300L OPEN

NC1

VSS2

NC3

VDD 5

RES 4

RN9

1001234

8765

R41

10K

Y114.318MHZ

R39

10K

C270.1U

16V K

CN6

22P OPEN

81

72

63

54

CN1122P OPEN

81

72

63

54

RN5

1001234

8765

L4

BEAD

R22

1KF

RN12

1001234

8765

RN2

1001234

8765

L3

BEAD

R31

3KF

CN4

22P OPEN

81

72

63

54

CN922P OPEN

81

72

63

54

+ C4022U16V

12

CN7 22P OPEN

81

72

63

54

R37

10K U6 SST 39VF010

A153A1429A1328A124A1125A1023A926A827A75A66A57A48A39A210A111A012

DQ7 21DQ6 20DQ5 19DQ4 18DQ3 17DQ2 15DQ1 14DQ0 13

OE24

WE31

VCC 32

NC 1

GND 16

A162 NC/A1730

CE22

C320.1U

16V K

C590.1U

16V K

+ C1722U16V

12

C190.1U

16V K

R43

10K R49

10K

R28

10K

D9

1N4148

12

R32 0

R45

10K

C420.1U

16V K

RN6

1001234

8765

C430.1U

16V K

L5

BEAD

C2247POPEN

C440.1U

16V K

C560.1U

16V K

C450.1U

16V K

C460.1U

16V K

C470.1U

16V K

R26

10K

C480.1U

16V K

C240.1U

16V K

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

G-

R-

R+

G+

B-

B+

PC5V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

+3.3V

DSUB_SDA

DSUB_SCL

RED-

RED+

GREEN-

BLUE-

BLUE+

HS

VS

GREEN+

RX2-

RX2+

RX1-

RX1+

RX0-

RX0+

RXC+

RXC-

DVISCL

DVISDA

RX0-

RX0+

RX1-

RX1+

RX2-

RX2+

RXC-

RXC+

RX0M

RX0P

RX1M

RX1P

RX2M

RX2P

RXCM

RXCPDVIPC5V

DVIPC5V

DVISCL

DVISDA

Cable-Detect

Interface Board

DV172

Dimand View Monitor

OPEN

OPEN

R8 56

R20 10K

R15100

U2A

74LVC14A

1 2

147

DN100

BAV99

1

3

2

J2

DVI

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

11 11

12 12

13 13

14 14

15 15

16 16

17 17

18 18

19 19

20 20

21 21

22 22

23 23

24 24

C3 27C1 25

C5_ 30C5 29

C4 28C2 26

3131

3232

DN13BAV99

1

3

2

R13 22

U2B

74LVC14A

3 4

147

DN8BAV99

1

3

2

D5

TZMC5V1

12

C100.1U16V K

D6

TZMC5V1

12

C10.1U

16V K

C7 0.01U 50V K

D3

TZMC5V1

12

R12 56

DN6

BAV70LT1

2

3

1

DN1

BAV99

1

3

2DN11BAV99

1

3

2

C2 0.01U 50V K

R184.7K

C4 0.01U 50V K

J1

D-Sub15

1728394105

11

12

13

14

15

6

1617

D8

TZMC5V1

12

R17

10K

C947P50V J

R14100

D2

TZMC5V1

12

R52.7K

R175

C1147P50V J

DN5BAV99

1

3

2

DN9BAV99

1

3

2

U2C

74LVC14A

5 6

147

C130.1U16V K

R194.7K

DN4

BAV70LT1

2

3

1

U1

AT24C02A

A01

A12

A23

VSS4

VCC 8

WP 7

SCL 6

SDA 5

R375

R7 22

C5 0.01U 50V K

U2D

74LVC14A

9 8

147

DN12BAV99

1

3

2DN7BAV99

1

3

2

C1247P50V J

DN2

BAV99

1

3

2

R4 56

R9 47

C847P50V J

U3

AT24C02A

A01

A12

A23

VSS4

VCC 8

WP 7

SCL 6

SDA 5

R10 22

D4

TZMC5V1

12

R275

DN10BAV99

1

3

2

D1

TZMC5V1

12

R62.7K

C6 0.01U 50V KR11 47

D7

TZMC5V1

12

C3 0.01U 50V K

R16

10K

DN3

BAV99

1

3

2

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

Interface Board

DV172

Dimand View Monitor

Optical Points

Screw Holes

H4

HOLE-V8

1

2

3

4

5

6

7

8

9OPOP4

OPOP14

OPOP7

H2

HOLE-V8

1

2

3

4

5

6

7

8

9

H1

HOLE-V8

1

2

3

4

5

6

7

8

9OPOP2

OPOP10

OPOP12

OPOP13

OPOP1

OPOP5

OPOP3

OPOP8

OPOP9H3

HOLE-V8

12

3

4

5

6

7

8

9

OPOP11

OPOP6

LCD Repair Tips

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Transcript of LCD Repair Tips