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FAS166F
LG FAS166F User Manual
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3-20
ELECTRICAL TROUBLESHOOTING GUIDE
9. POWER AMP PART CHECK
YES
YES
YES
YES
YES
YES
Power AMP part check
OK
Refer to SMPS troubleshooting.
Check each line resistor output voltage.
Replace the coil.
Check each IC702 Pin25,26,55,56
input voltage.
Check PWM modulator input
each Pin3, 4, 10, 11.
Power IC702,
Pin28,29,36,37,44,45,52,53 output.
NO
NO
NO
CN702
Pin1: +12V Pin2,3: 25V
Check
IC702 Pin25,26,55,56 :+12V
input.
Check output line coil.
36
38
Table of Contents
Section 1 Summary
3
Table of Contents
3
Servicing Precautions
4
Esd Precautions
6
Service Information for Eeprom
7
Program Download Guide
8
Specifications
11
Section 2 Cabinet & Main Chassis
12
Exploded Views
14
Cabinet and Main Frame Section (Fa166)
14
Deck Mechanism Section (Scp-03B)
15
Packing Accessory Section
16
Speaker Section (Fas166F)
17
Section 3 Electrical
18
Training Master
19
No Sound from Speakers
19
No Sound in Port. in Function
20
No Sound in Ipod Function
21
No Sound in Am/Fm Function
22
No Sound in CD Function
23
No Sound in Usb Function
25
No Power
26
One Point Repair Guide
27
No Power Problem
27
Speaker no Audio Output
28
Usb no Detect
29
No Booting
30
Electrical Troubleshooting Guide
31
Power (Smps)
31
P-Sens
32
Vkk Check
32
Μ-COM PART CHECK-1
33
Μ-COM PART CHECK-2
33
Fld Display Check
34
Touch Part Check
35
Pwm Modulation Check
36
Power Amp Part Check
37
Tuner Function Check
38
Usb Function Check
39
CD Function Check
40
Waveforms
41
Servo
41
Motor Drive
41
Audio Path
42
Adc
43
Ipod
43
Usb
44
Crystal
44
Wiring Diagram
46
Block Diagrams
47
Main Block Diagram
47
Smps Block Diagram
48
Circuit Diagrams
49
Smps Circuit Diagram
49
Main-Micom Circuit Diagram
50
Main-Adc/Ipod Circuit Diagram
51
Main-Mpeg(Dsp) Circuit Diagram
52
Main-Rf Servo Circuit Diagram
53
Main-Power Circuit Diagram
54
Amp Circuit Diagram
55
Front Circuit Diagram
56
Front Jack Circuit Diagram
57
Ipod Docking Circuit Diagram
58
Circuit Voltage Chart
59
Printed Circuit Board Diagrams
60
Main P.C.board
60
Smps P.C.board
61
Amp P.C.board
62
Front P.C.board
63
Front Jack P.C.board
64
Ipod Docking P.C.board
64
4
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LG FAS166F Specifications
General
Brand
LG
Model
FAS166F
Category
Stereo System
Language
English
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