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Simply Cinema
ESC230 (120V)
SPEAKER SYSTEM
SERVICE MANUAL
JBL Incorporated
250 Crossways Park Dr.
Woodbury, New York 11797 REV 0 5/00
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ESC230 (120V)
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TABLE OF CONTENTS
GENERAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
CONTROLS AND CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
ELECTRICAL PARTS LIST (120V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
PRINTED CIRCUIT BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
SCHEMATICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
IC VOLTAGE READINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Description Part Number
ESC230 SUBWOOFER * J-SP-SUB
ESC230 SATELLITE SPEAKER * J-SP-SAT
General System Specifications
Power Output 15 watts x 6 @0.1%THDSignal-to-Noise Ratio 90 dBAInput Impedance 20k ohmsInput Sensitivity 400 mVSystem Frequency Response 35Hz to 20kHzDimensions (H x W x D) Main Unit: 2-11/16 x 13-1/2 x 9”
(69 x 343 x 230mm)Satellites: 7-1/2 x 4-1/16 x 4-3/8”
(190 x 103 x 111mm)Subwoofer:17-3/4 x 7-3/4 x 13-7/8”
(451 x 197 x 352mm)
* The ESC230 subwoofer and satellite speakers are not serviceable.
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ESC230 (120V)
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Specifications
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Speaker Connection
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Source Connection (TV or VCR)
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Source Connection (Headphone)
Plug In
Turn On
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Test Mode and Level Adjustments
Surround Modes
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Bass Boost
Volume
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ESC230 (120V)
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Center Channel
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Balance
Surround Channel
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Bass and Treble
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Trouble Shooting
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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ESC230 (120V)
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Ref. Designator Part Number Description Quantity
ESC230 (120V) Parts List (Cont.)
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ESC230 (120V)
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ESC230 Exploded View
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ESC230 (120V)
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ESC230 Packing
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ESC230 (120V)
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ESC230 Integrated Circuit Diagrams
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ESC230 Integrated Circuit Diagrams (Cont.)
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ESC230 (120V)
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ESC230 PCB’s
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ESC230 (120V)
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ESC230 PCB’s (Cont.)
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ESC230 (120V)
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ESC230 PCB’s (Cont.)
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ESC230 Block DiagramESC230 (120V)
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ESC230 Schematics
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ESC230 (120V)
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ESC230 Schematics (Cont.)
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ESC230 (120V)
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ESC230 Schematics (Cont.)ESC230 (120V)
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ESC230 Schematics (Cont.)ESC230 (120V)
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ESC230 Schematics (Cont.)ESC230 (120V)
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ESC230 Schematics (Cont.)ESC230 (120V)
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ESC230 (120V)
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ESC230 IC Voltage Readings