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CM9530
LG CM9530 User Manual
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3-34
ELECTRICAL TROUBLESHOOTING GUIDE
CD/ USB play
Check Front / Woofer SPK.
Replace IC204.
Check SMPS board.
CN100 ~ CN103
Pin3 5V OK?
NO
NO
Check IC204.
4. NO LIGHTING (FRONT/ WOOFER SPEAKER)
YES
YES
Check SMPS board.
Check IC501.
CN100 ~ CN103
Pin1,2 +12 V OK?
CN100 ~ CN103
Pin6,7 I2C signal OK?
NO
NO
YES
YES
52
54
Table of Contents
Table of Contents
3
Servicing Precautions
4
Esd Precautions
6
Hidden Key Mode
7
Service Information for Eeprom
8
Program Upgrade Guide
9
Specifications
10
Exploded Views
14
Cabinet and Main Frame Section (Cm9530)
14
Mechanism Deck Section (Dp17Tm)
15
Packing Accessory Section
16
Speaker Section
17
One Point Repair Guide
21
Power
21
Booting When Power on the Set
23
Vfd Is Not Displayed When Power on the Set
24
Booting in CD/Usb Function
26
Operation of MD
30
Sound
35
Audio Output Is Small or no Audio Output
41
Power on (Standby Led Is Blinking)
42
Speaker no Audio
43
Electrical Troubleshooting Guide
44
Power Supply on Smps Board
44
System Part
48
Audio Part
49
Lighting (Front/ Woofer Speaker)
53
Waveforms of Major Check Point
54
Wiring Diagram
58
Block Diagrams
59
Smps Block Diagram
59
Main System Block Diagram
60
Main Power Block Diagram
61
Circuit Diagrams
62
Smps - Power #1 Circuit Diagram
62
Smps - Power #2 Circuit Diagram
63
Main - Micom Circuit Diagram
64
Main - CD Dsp Circuit Diagram
65
Main - Servo Circuit Diagram
66
Main - Adc/ Pwm Circuit Diagram
67
Main - Amp Circuit Diagram
68
Volume Circuit Diagram
69
Vfd Circuit Diagram
70
MIC Circuit Diagram
71
Portable Circuit Diagram
72
Front Speaker Led - Driver Circuit Diagram
73
Front Speaker Led - Sub Circuit Diagram
74
Woofer Speaker Led - Driver Circuit Diagram
75
Woofer Speaker Led - Sub Circuit Diagram
76
Circuit Voltage Chart
77
Printed Circuit Board Diagrams
78
Smps P.C.board
78
Main P.C.board
80
Volume P.C.board
82
Vfd P.C.board
84
MIC P.C.board
85
Portable P.C.board
85
Front Speaker Led - Driver P.C.board
86
Front Speaker Led - Sub P.C.board
86
Woofer Speaker Led - Driver P.C.board
87
Woofer Speaker Led - Sub P.C.board
87
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LG CM9530 Specifications
General
Brand
LG
Model
CM9530
Category
Stereo System
Language
English
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