TH-42PHD5.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 TH-42PHD5 데이타시트 다운로드

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Panasonic Services Company
National Training
TH-42PHD5/TH-50PHD5
TH-42PHW5/TH50PHW5
GPH5D Chassis
Plasma Display Panel
Troubleshooting Guide
Warning
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does
not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair
the product or products dealt with in this service information by anyone else could result in serious injury or death.
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Objective ............................................................................................................... 5
2002 Model Line Up..............................................................................................6
Specifications.....................................................................................................7
Features.............................................................................................................8
New Asymmetrical Cell Structure Panel .........................................................9
Model Differences ...........................................................................................9
Disassembly .......................................................................................................11
Rear Cover Removal .......................................................................................11
42” HD PCB Board Layout Diagram ...................................................................13
Printed Circuit Board Information Table ...........................................................13
50” PCB Board Layout Diagram .........................................................................14
42” SD PCB Layout Diagram ..............................................................................15
Video Signal Path Explanation............................................................................16
HY/HZ Board....................................................................................................16
HX Board .........................................................................................................17
D1 Board..........................................................................................................18
DVI Interface ....................................................................................................19
Sync Process ...................................................................................................21
RGB/PC Input Mode Sync ...............................................................................21
Composite/ Component Video Input mode Sync .............................................21
D1 Board.............................................................................................................22
D1 Main ICs Operation ....................................................................................22
D2 Board.............................................................................................................23
D2 Board details ..............................................................................................24
SC Board Explanation.........................................................................................25
SS Board Explanation.........................................................................................28
Power Supplies...................................................................................................31
Standby Power Supply.....................................................................................31
Main Power Supply ..........................................................................................32
Power Factor Control ....................................................................................32
Low Voltage Power supply............................................................................33
Voltage Regulation........................................................................................33
High Voltage Power Supply .............................................................................34
Protection Circuits...............................................................................................36
Diagnostic Procedures........................................................................................38
Self Check Display Indication...........................................................................38
Power LED Flashing timing chart.....................................................................39
Diagnostic Flow Charts .......................................................................................40
No Power .........................................................................................................40
The Power LED is red and blinking on/off........................................................41
Power LED blinks twice ...................................................................................42
No Picture Flowchart 1.....................................................................................43
No picture Flowchart 2 .....................................................................................44
Dark picture Flowchart .....................................................................................45
Local screen failure.............................................................................................46
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Service Hints....................................................................................................46
After Image Prevention .......................................................................................53
Screen Saver Feature...................................................................................53
Side Bar Brightness adjustment....................................................................54
Option Setting .....................................................................................................55
Accessing the Option Menu .............................................................................55
Hidden Option Menu for GPH5D series ...........................................................56
Sample Waveforms.............................................................................................58
HY/HZ board ....................................................................................................58
HX board..........................................................................................................61
SC Board Input Signals....................................................................................63
SC Board Waveforms ......................................................................................64
SS-Board Input Signals....................................................................................66
SS Board Waveforms ......................................................................................67
PDP Defect Pixel Specification ...........................................................................68
Connector Tables................................................................................................69
F-BOARD CONNECTORS ..............................................................................69
P-BOARD CONNECTORS ..............................................................................69
HX- BOARD CONNECTORS...........................................................................73
HY / HZ- BOARD CONNECTORS...................................................................74
Adjustment Procedures.......................................................................................75
Panel label Information ....................................................................................75
+B Set-up.........................................................................................................76
Confirmation.....................................................................................................76
Driver Set-up....................................................................................................77
Initialization Pulse Adjust .................................................................................78
P.C.B. (Printed Circuit Board) exchange procedure.........................................79
Adjustment Volume Locations..........................................................................79
Test Point locations..........................................................................................80
Serviceman mode ...............................................................................................81
CAT (computer aided test) Mode .....................................................................81
I2C Mode ..........................................................................................................81
CD mode..........................................................................................................82
SD Mode..........................................................................................................83
I2C Menu Structure ..........................................................................................84
Alignment Procedures.........................................................................................85
NTSC Panel White Balance............................... Error! Bookmark not defined.
Pedestal Setting...............................................................................................85
NTSC (480i) White Balance Adjustment ..........................................................86
480p White Balance Adjustment ......................................................................87
720p White Balance Adjustment ......................................................................88
1080i White Balance Adjustment .....................................................................89
Sub Brightness Setting ....................................................................................90
Service Contact Information................................................................................91
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Objective
The information provided in this document is designed to assist the technician in
determining the defective printed circuit board. The troubleshooting flow charts,
signal path charts and connector information should provide enough detail that
the technician can accurately determine which one of the printed circuit boards is
required to repair the product. Alignment and adjustment procedures are also
included in this document.
The Block diagrams and the schematic drawings reference the model TH-
42PHD5, but the technology is consistent with any GPH5D chassis.
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