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V9120W
LG V9120W Manuals
Manuals and User Guides for LG V9120W. We have
1
LG V9120W manual available for free PDF download: Service Manual
LG V9120W Service Manual (116 pages)
Brand:
LG
| Category:
DVR
| Size: 11.73 MB
Table of Contents
Section 1 Summary
3
Table of Contents
3
Product Safety Servicing Guidelines for Video Products
4
Servicing Precautions
5
Service Information for Eeprom IC Setting(Vcr)
6
Service Information for Eeprom (DVD)
7
Specifications
8
Exploded Views
10
Packing Accessory Section
11
Section 3 Electrical
12
Vcr Part
14
Electrical Adjustment Procedures
14
Electrical Troubleshooting Guide
15
Power(Smps) Circuit
15
System/Key Circuit
18
Servo Circuit
19
Y/C Circuit
22
Hi-Fi CIRCUIT
26
Tuner/If CIRCUIT
29
Block Diagrams
31
Power(Smps) BLOCK DIAGRAM
31
Tu/If, NICAM & A2 BLOCK DIAGRAM
32
Vps Block Diagram
32
Y/C Block Diagram
33
Hi-Fi BLOCK DIAGRAM
34
System Block Diagram
35
Circuit Diagrams
36
Power(Smps) CIRCUIT DIAGRAM 1
36
Tu/If Circuit Diagram
37
A/V Circuit Diagram
38
Hi-Fi CIRCUIT DIAGRAM
39
Scart(Jack) Circuit Diagram
40
System Circuit Diagram
41
Waveform & Voltage Sheet
42
Circuit Voltage Chart
43
Printed Circuit Diagrams
45
Main P.C.board (Vcr+DVD)
45
Main P.C.board (Vcr+DVD)
46
Power P.C.board
47
Key P.C.board
48
Timer P.C.board
48
DVD Part
49
Electrical Troubleshooting Guide
49
System Operation Flow
49
System Test Flow
50
Details and Waveforms on System Test and Debugging
56
System 27Mhz Clock, Reset, Flash R/W Signal
56
Sdram Clock
58
Tray Open/Close Signal
58
Sled Control Related Signal (no Disc Condition)
59
Lens Control Related Signal(no Disc Condition)
59
Laser Power Control Related Signal(no Disc Condition)
60
Disc Type Judgement Waveform
60
Focus on Waveform
62
Spindle Control Waveform (no Disc Condition)
63
Tracking Control Related Signal(System Checking)
64
Mt1389 Audio Optical and Coaxial Output(Spdif)
65
Mt1389 Video Output Waveform
65
Mt1389 Audio Output to Audio Dac
66
Audio Output from Audio Dac
67
Block Diagrams
68
Overall Block Diagram
68
Servo Block Diagram
69
Mpeg & Memory Block Diagram
70
Video & Audio Block Diagram
71
Circuit Diagrams
73
System Circuit Diagram
73
Rf & Dsp Servo Circuit Diagram
74
Av/Jack Circuit Diagram
75
Circuit Voltage Chart
76
Troubleshooting Guide
77
Procedures
92
Section 5 Mechanism of DVD Part (Dp-9C Mtk Model)
109
Deck Mechanism Parts Locations
110
Top View
110
Top View(Without Tray Disc)
110
Bottom View
110
Top View
110
Top View(Without Tray Disc)
110
Bottom View
111
Deck Mechanism Disassembly
111
Main Base
111
Clamp Assembly Disc
111
Clamp Upper
111
Magnet Clamp
111
Plate Clamp
111
Tray Disc
111
Base Assembly Sled
112
Gear Feed
112
Gear Middle
112
Gear Rack
112
Rubber Rear
112
Frame Assembly Up/Down
113
Belt Loading
113
Gear Pulley
113
Gear Loading
113
Guide Up/Down
113
PWB Assembly Loading
113
Base Main
113
Exploded View
115
Deck Mechanism Exploded View
115
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