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LG HT903WA - Service Manual
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DVD/CD RECEIVER
SER
VICE MANUAL
P/NO :
AFN55854922
APRIL, 2008
W
ebsite http://biz.lgservice.com
Internal Use Only
MODEL: HT903W
A(HT903W
A/HT903WA-AP
, SH93W
A-F/C/L/R/W
, W93-T2)
SERVICE MANUAL
MODEL: HT903W
A
(HT903W
A/HT903W
A-AP
, SH93W
A-F/C/L/R/W
, W93-T2)
2
Table of Contents
Main Page
Table of Contents
2
Section 1. General
3
Servicing Precautions
3
Esd Precautions
5
Program Download Guide
8
Specifications
9
Section 2. Electrical Part
10
Troubleshooting Guide
10
Details and Waveforms on System Test and Debugging
22
Wiring Diagram
32
Overall Block Diagram
33
Circuit Diagrams
34
Circuit Voltage Chart
50
Section 3. Exploded Views
58
Cabinet and Main Frame Section
58
Deck Mechanism Exploded View(Dp-12Av)
59
Packing Accessory Section
60
Speaker Section
61
Section 4. Mechanism (Dp-12Av)
68
Deck Mechanism Parts Locations
69
Top View
69
Top View(Without Tray Disc)
69
Bottom View
69
Deck Mechanism Disassembly
70
Main Base
70
Clamp Assembly Disc
70
Clamp Upper
70
Magnet Clamp
70
Plate Clamp
70
Tray Disc
70
Base Assembly Sled
71
Gear Feed
71
Gear Middle
71
Gear Rack
71
Rubber Rear
71
Frame Assembly Up/Down
72
Belt Loading
72
Gear Pulley
72
Gear Loading
72
Guide Up/Down
72
PWB Assembly Loading
72
Base Main
72
Deck Mechanism Exploded View(Dp-12Av)
73
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