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BPM25
LG BPM25 User Manual
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3-41
ELECTRICAL TROUBLESHOOTING GUIDE
No 3.3 V
Check IC151 and replace.
Is the
Vcc supplied to D150
anode?
Check 5.1 VA on IC150 pin10.
YES
YES
NO
Is D150 output 5.1 VA?
Is there
signal at IC151
pin1?
Check C178 or replace D150.
Check voltage on IC501.
YES
YES
NO
NO
No 5 V
Check IC150 and replace.
Is the
Vcc 5.3 VA supplied to IC150
pin27?
Is there
3.3 V at IC150
pin25?
Check 5.1 VA on IC150 pin10.
Check PWR_CTL2 signal from IC501.
YES
YES
YES
NO
NO
1. POWER SUPPLY ON MAIN BOARD
53
55
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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