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DM5620K
LG DM5620K - Service Manual
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KARAOKE DVD Mini Hi-Fi System
SERVICE MANUAL
MODEL:
DM5620K
(DM5620K, DMS5620V/W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
MODEL: DM5620K (DM5620K, DMS5620V/W)
SERVICE MANUAL
3
1
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2
,
MARCH
76015233
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F
A
:
O
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Website
http://biz.lgservice.com
Internal
Use
Only
2
Table of Contents
Main Page
Section 1 Summary
3
Table of Contents
3
Servicing Precautions
4
Esd Precautions
6
Service Information for Eeprom
7
Program Update Guide
8
How to Update Micom Program
8
How to Update DVD(Ess) Program
9
Specifications
10
Section 2 Cabinet & Main Chassis
12
Cabinet and Main Frame Section (Dm5620K)
14
Exploded Views
14
Packing Accessory Section
16
Speaker Section
17
Section 3 Electrical
20
Electrical Troubleshooting Guide
21
Smps Part
21
Audio Abnormal
23
Function Mode Audio Abnormal
24
CD Part
26
DVD Reading Check
27
Usb Part
28
Vfd Display Check
29
Waveforms of Major Check Point
30
When Power On, Reset & Data Etc Waveform
30
When Usb Function Operating
30
Starting Action Waveform in MD Device (Sled Home)
31
Focus Waveform
32
At First Action, Focus Signal A, B, C, D
35
Rf Waveform (Analog Scope)
35
Wiring Diagram
36
Block Diagram
37
Circuit Diagrams
38
Smps Circuit Diagram
38
DVD Mpeg/ Adc/ Composite/ Usb Circuit Diagram
39
S3050/ S8082/ MIC Circuit Diagram
40
Dsp/ Spbana/ Headphone Circuit Diagram
41
Amplifier Circuit Diagram
42
Mcu/ Tuner/ Aux Circuit Diagram
43
Vfd/ Key/ Led Circuit Diagram
44
Tape Circuit Diagram (Optional Part)
45
Capacitors
46
Circuit Voltage Chart
46
Connectors
47
Printed Circuit Board Diagrams
48
Smps P.C.board
48
Main P.C.board
49
Key_R P.C.board
51
Vfd / Usb P.C.board
51
Key P.C.board
52
MIC P.C.board
52
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LG DM5620K Specifications
General
Brand
LG
Model
DM5620K
Category
Karaoke System
Language
English
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