PDP-4271HD
8
1
2
3
4
1
2
3
4
C
D
F
A
B
E
1.3 JIGS LIST
CONTENTS
1. NOTES ON SERVICE VISIT.........................................................................................................................................2
1.1 SAFETY INFORMATION .......................................................................................................................................2
1.2 QUICK REFERENCE UPON SERVICE VISIT.......................................................................................................6
1.3 JIGS LIST ..............................................................................................................................................................8
2. EXPLODED VIEWS AND PARTS LIST ......................................................................................................................10
2.1 PACKING SECTION ............................................................................................................................................10
2.2 REAR SECTION ..................................................................................................................................................12
2.3 FRONT SECTION................................................................................................................................................14
2.4 CHASSIS SECTION (1/2) ....................................................................................................................................16
2.5 CHASSIS SECTION (2/2) ....................................................................................................................................18
2.6 PANEL CHASSIS SECTION ................................................................................................................................20
2.7 MULTIBASE SECTION ........................................................................................................................................22
2.8 PDP SERVICE PANEL ASSY (AWU1208) ..........................................................................................................24
2.9 TABLE TOP STAND .............................................................................................................................................25
3. PCB PARTS ................................................................................................................................................................26
4. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ......................................................................................................42
4.1 OVERALL CONNECTION DIAGRAM (1/2) .........................................................................................................42
4.2 OVERALL CONNECTION DIAGRAM (2/2) .........................................................................................................44
4.3 OVERALL BLOCK DIAGRAM (1/2) .....................................................................................................................46
4.4 OVERALL BLOCK DIAGRAM (2/2) .....................................................................................................................48
4.5 42 ADDRESS ASSY ............................................................................................................................................49
4.6 42 SCAN A and B ASSYS ...................................................................................................................................50
4.7 42X DRIVE, SUS CLAMP 1 and SUS CLAMP 2 ASSYS ....................................................................................51
4.8 42 Y DRIVE ASSY ...............................................................................................................................................52
4.9 42 DIGITAL ASSY ................................................................................................................................................53
4.10 AUDIO ASSY .....................................................................................................................................................54
4.11 SIGNAL BLOCK DIAGRAM ...............................................................................................................................56
4.12 DTV BLOCK DIAGRAM .....................................................................................................................................58
4.13 XY DRIVE POWER LINE BLOCK DIAGRAM ....................................................................................................60
4.14 FUKUGO BLOCK POWER LINE BLOCK DIAGRAM ........................................................................................61
4.15 POWER SUPPLY UNIT......................................................................................................................................62
4.16 VOLTAGES .........................................................................................................................................................63
4.17 WAVEFORMS ....................................................................................................................................................73
5. DIAGNOSIS ................................................................................................................................................................77
5.1 TROUBLESHOOTING .........................................................................................................................................77
5.1.1 FLOWCHART OF FAILURE ANALYSIS FOR THE WHOLE UNIT ................................................................77
5.1.2 FLOWCHART OF FAILURE ANALYSIS FOR THE POWER SUPPLY UNIT .................................................79
5.1.3 FLOWCHART OF FAILURE ANALYSIS FOR THE DRIVE ASSY .................................................................80
5.1.4 FLOWCHART OF FAILURE ANALYSIS FOR THE DIGITAL ASSY ..............................................................84
5.1.5 FLOWCHART OF FAILURE ANALYSIS FOR THE MAIN ASSY ...................................................................85
5.1.6 FLOWCHART OF FAILURE ANALYSIS FOR THE VIDEO SYSTEM............................................................86
5.1.7 FLOWCHART OF FAILURE ANALYSIS FOR THE AUDIO SYSTEM ...........................................................92
5.2 DIAGNOSIS OF PD (POWER-DOWN) ................................................................................................................96
5.2.1 BLOCK DIAGRAM OF THE POWER DOWN SIGNAL..................................................................................96
5.2.2 PD (POWER DOWN) DIAGNOSIS................................................................................................................97
5.3 DIAGNOSIS OF SD (SHUTDOWN)...................................................................................................................100
5.3.1 BLOCK DIAGRAM OF THE SHUTDOWN SIGNAL.....................................................................................100
5.3.2 SD (SHUTDOWN) DIAGNOSIS ..................................................................................................................101
5.4 NON-FAILURE SYMPTOMS..............................................................................................................................102
Cleaning
Name
Part No.
Remarks
Cleaning liquid
GEM1004
Used to fan cleaning.
Refer to "2.4 CHASSIS SECTION (1/2).
Cleaning paper
GED-008
Содержание PDP-4270HD
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