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BPM25
LG BPM25 User Manual
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3-43
ELECTRICAL TROUBLESHOOTING GUIDE
2. SYSTEM PART
Power on
Main
Board
Timer Board
Check IC150, IC151,
IC152, IC153 and adapter.
Check IC150 pin9.
LED is
Turning On
OK?
IC501,
IC601, IC602 Vcc
1.2V, 3.3VA, 3.3V, 1.5V
OK?
5.1 VA
OK?
NO
NO
NO
YES
YES
Check IC501 & CN901.
Replace X501.
Replace Q901 (LED Driver).
Signal LED
OK?
X501
27.000 MHz
OK ?
Q901 OK?
NO
NO
NO
YES
YES
YES
YES
2A
Replace
IC501 MPEG IC.
Replace LED901.
2B
55
57
Table of Contents
Section 1 Summary
3
Default Chapter
3
Table of Contents
3
Product Safety Servicing Guidelines for Blu-Ray Disc / DVD Player Products
4
Servicing Precautions
5
General Servicing Precautions
5
Insulation Checking Prodedure
5
Electrostatically Sensitive (Es) Devices
5
Firmware Update Guide
6
Specifications
9
Section 2 Cabinet & Main Chassis
10
Exploded Views
11
Cabinet and Main Frame Section
11
Deck Mechanism Section (Bm16Ea5)
12
Packing Accessory Section
13
Section 3 Electrical
14
Digital Display & Media Training Master
15
Distorted Picture
15
No Picture
20
Picture Color
25
Noise/Audio Problems
27
Miscellaneous
30
Blu-Ray Player
39
One Point Repair Guide
40
No Power Problem
40
Led Doesn't Light on
41
No Booting When You Turn the Unit on
43
Bad Hdmi Video / Audio Output
51
Wired Network Connection Error - (Option Part)
52
Wireless Network Connection Error - (Option Part)
53
Electrical Troubleshooting Guide
54
Power Supply on Main Board
54
System Part
56
No Hdmi Output
58
Waveforms of Major Check Point
59
System Part - 1
59
System Part - 2 (System Memory)
60
Hdmi Part
61
Wiring Diagrams
62
Block Diagram
63
Circuit Diagrams
64
Main - DC-DC Circuit Diagram
64
Main - Mpeg Circuit Diagram
65
Main - Memory & Strap Circuit Diagram
66
Main - Front End Circuit Diagram
67
Main - A/V Output Circuit Diagram
68
Timer Circuit Diagram
69
Circuit Voltage Chart
70
Printed Circuit Board Diagrams
71
Main P.C.board
71
Timer P.C. Board
71
Section 4 Mt8553/ Mt8563 Front-End Loader Part
72
Ld Check Guide
73
Purpose
73
Ld Check Procedure
73
How to Use the Sa Reset Function
74
Purpose
74
Required Sa Reset
74
Sa Reset Procedure
74
Major IC Internal Block Diagram and Pin Description
76
Mt8553/ Mt8563 Pin Description
76
Ic701 (Tpic2050): 9Ch Motor Drive with 3 Beam Laser Diode Driver
79
Pick-Up Connector Terminal Pin Assignments
81
Block Diagram
82
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LG BPM25 Specifications
General
Brand
LG
Model
BPM25
Category
Blu-ray Player
Language
English
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