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CMS2460F
LG CMS2460F Service Manual
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3-24
ELECTRICAL TROUBLESHOOTING GUIDE
7. TUNER FUNCTION CHECK
TUNER FUNCTION CHECK
IC105 (MLC3730) output data.
Check Q204 Input voltage (5.1 V).
Replace Q204.
OK
Check IC402 (pin11: +3.3 V).
Check IC402 pin8(SDA), pin7(SCL).
NO
NO
YES
YES
YES
YES
YES
Refer to function check.
40
42
Table of Contents
Section 1 Summary
3
Table of Contents
3
Servicing Precautions
4
Esd Precautions
6
Hidden Key Mode
7
Service Information for Eeprom
8
Program Download & Update Guide
9
Specifications
10
Section 2 Cabinet & Main Chassis
12
Exploded Views
14
Cabinet and Main Frame Section
14
Packing Accessory Section
16
Speaker Section
17
Section 3 Electrical
18
One Point Repair Guide
19
No Power
19
No Booting When Power on the Set
21
Vfd Is Not Displayed When Power on the Set
22
Cable6
23
No Operation of MD
24
No Sound
29
Electrical Troubleshooting Guide
33
Power (Smps)
33
Mcs Part Check
36
Fld Display Check
37
Pwm Modulation Check
38
Power Amp Part Check
39
Tuner / Aux Function Check
40
Tuner Function Check
41
CD Function Check
42
Double Usb Function
43
Waveforms of Major Check Point
44
Sdram
44
Servo
44
Audio Path
45
Usb
46
Wiring Diagram
48
Block Diagrams
49
System Block Diagram
49
Smps Block Diagram
50
Power Block Diagram
51
Circuit Voltage Chart
52
Ics
52
Capacitors
52
Printed Circuit Board Diagrams
53
Smps P.C.board
53
Main P.C.board
56
Display P. C. Board
58
Key P. C. Board
59
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LG CMS2460F Specifications
General
Brand
LG
Model
CMS2460F
Category
Stereo System
Language
English
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