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DP372D
LG DP372D User Manual
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3-10
Copyright ©
2008 LG Electronics. Inc.
All right reserved.
Only for training and service purposes
LGE Internal Use Only
3-2. TV MODE TEST
NO
Check DVD 1389P
related circuit
NO
YES
YES
YES
Check the cable
connection on pick-up head.
Change the TUNER
DVD_MODE
OK?
NO
NO
Change the MP141
1
TV_5V
supply OK?
TV_AUDIO/VIDEO
OUTPUT
Pin single
noraml?
Check the
IC MP141
1?
TV_MODE_TEST
TV_MODE TEST
END
NO
Check cable &
ANTENA
attach
YES
Cable &
ANTENA?
NO
Reset the system
according to the local
TV system, then auto search
channels
YES
System
set right?
P
AL/NTSC/
SECAM?
YES
YES
TV display normal?
20
22
Table of Contents
Section 1 Summary
3
Default Chapter
3
Table of Contents
3
Product Safety Servicing Guidelines for Portable DVD Products
4
Servicing Precautions
5
General Servicing Precautions
5
Insulation Checking Prodedure
5
Electrostatically Sensitive (Es) Devices
5
Specifications
6
Exploded Views
8
Exploded Views
9
Packing Accessory Section
10
Section 3 Electrical
12
Electrical Troubleshooting Guide
13
Power Check Flow
13
System Operation Flow
14
System Test Flow
15
Details and Waveforms on System Test and Debugging
22
System 27Mhz Clock, Reset, Flash Sck Signal
22
Sdram Clock
24
Tray Open/Close Signal
24
Sled Control Related Signal
25
Laser Power Control Related Signal
26
Spindle Control Waveform
26
Focus on Waveform
27
TRACKING CONTROL RELATED SIGNAL(System Checking)
28
Video Output Waveform
29
Audio Output from 1389P
29
Wiring Connection Diagrams
30
Wiring Connection Diagram-1
30
Wiring Connection Diagram-2
31
Block Diagrams
32
Overall Block Diagram
32
Power Block Diagram
33
Servo Block Diagram
34
System Block Diagram
35
Av Block Diagram
36
Lcd Block Diagram
37
Circuit Diagrams
38
Mpeg Circuit Diagram
38
Memory Circuit Diagram
39
Opu & Motor Circuit Diagram
40
Av Circuit Diagram
41
Charge Circuit Diagram
42
Lcd if Circuit Diagram
43
Tuner Circuit Diagram
44
Menu Key Circuit Diagram
45
Led Driver Circuit Diagram
46
Front Key Circuit Diagram
47
Circuit Voltage Chart
48
Printed Circuit Board Diagrams
50
Main P.C.board
50
Lcd P.C.board
52
Inverter P.C.board
52
Key P.C.board
53
Copyright © 2008 LG Electronics. Inc. All Right Reserved
53
Only for Training and Service Purposes
53
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LG DP372D Specifications
General
Brand
LG
Model
DP372D
Category
Portable DVD Player
Language
English
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