SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited
No.YA099C
2005/12
PDP COLOR TELEVISION
YA099C
2005
12
PD-42V475/S,
PD-42V475/SP,
PD-42V485/S,
PD-42V485/SP
DIFFERENCE LIST
USING P.W. BOARD (Page 3-3)
Supplementary
Please be informed that the related contents are added due to the change of the PWB in the PDP Unit.
Therefore, this service manual describes only the items which differ from those of the PD-42V475/S,
PD-42V475/SP, PD-42V485/S and PD-42V485/SP service manual.
For details other than those described in this manual, please refer to the PD-42V475/S and PD-42V485/S
service manual (No.YA099, 2004/7) PD-42V475/SP and PD-42V485/SP service manual (No.YA099B, 2005/1).
P.W.B ASS'Y Name
P.W.B ASS'Y No.
DESCRIPTION
Before
After
X-MAIN P.W.B
LJ92-00943A
LJ92-01057B
Y-MAIN P.W.B
LJ92-00944B
LJ92-01058B
BASIC CHASSIS
FP2
1-2 (No.YA099C)
PRINTED WIRING BOARD PARTS LIST
X-MAIN P.W. BOARD ASS'Y (Page 3-26)
Y-MAIN P.W. BOARD ASS'Y (Page 3-26)
SECTION 1
PRECAUTION
Please refer to "PD-42V475/S and PD-42V485/S (No.YA099)" about this section.
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
Please refer to "PD-42V475/S and PD-42V485/S (No.YA099)" about this section.
SECTION 3
DISASSEMBLY
Please refer to "PD-42V475/S and PD-42V485/S (No.YA099)" about this section.
Ref. No.
Part No.
PART NAME
DESCRIPTION
Before
After
LJ92-00943A
LJ92-01057B
X-MAIN PWB
Ref. No.
Part No.
PART NAME
DESCRIPTION
Before
After
LJ92-00944B
LJ92-01058B
Y-MAIN PWB
(No.YA099C)1-3
SECTION 4
ADJUSTMENT
4.1
ADJUSTMENT AFTER THE Y-MAIN PWB REPLACEMENT
When the Y-MAIN PWB is replaced, adjustments are required. If it is misadjusted, phenomena such as faulty light emission of the
PANEL will occur. The adjustment parts and the test points vary according to the Y-MAIN PWB, and the adjustment values vary
according to the PANEL types. Before starting the adjustment procedure, check the Y-MAIN PWB and the PANEL type first.
< An example of misadjustment of the Y-MAIN PWB >
4.1.1 THE LOCATION OF THE PWB IN THE PDP UNIT
Faulty light emission occurrence
PDP (PANEL) UNIT
Y-BUFFER-U PWB
Y-BUFFER-L PWB
E-BUFFER PWB
F-BUFFER PWB
G-BUFFER PWB
Y-MAIN PWB
X-MAIN PWB
LOGIC-MAIN PWB
1-4 (No.YA099C)
4.1.2 ADJUSTMENT ITEMS AND TESTING POINTS ON THE Y-MAIN PWB [LJ92-00944B]
Rear of set
TP OUT4
VR5003
VR5004
TP VSCH
VR5001
VR5002
(No.YA099C)1-5
4.1.3 ADJUSTMENT ITEMS AND TESTING POINTS ON THE Y-MAIN PWB [LJ92-01058B]
TP OUT4
VR5003
VR5004
VR5001
VR5002
Rear of set
TP VSCH
(There is nothing written on the
PWB)