Pioneer PDP-4280HD Service Manual page 120

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A
Notes on replacing parts
For the parts described in the list below, replacement is required for the whole Assy, not only the defective part.
If any part listed below is identified as defective and needs replacement, replace the whole Assy, and make necessary
adjustments after replacement.
Reason: The whole Assy must be replaced, because adjustments and data rewriting for the Assy at the level of production
line are required.
PCB Assy No.
B
AWV2455
C
AWV2452, AWV2447
AWV1262, AWV1260
POWER SUPPLY Unit
D
MAIN Assy
DIGITAL Assy
X DRIVE Assy
Y DRIVE Assy
E
ADDRESS Assy
SENSOR Assy
TANSHI Assy
F
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2
Assy Name
Ref No.
IC4601
IC4701
IC4703
IC4801
MAIN Assy
IC5001
IC5102
IC5103
IC5203
IC8204
IC8301
IC8602
X DRIVE Assy • Parts of X D-D CON BLOCK
Y DRIVE Assy • Parts of Y VF D-D CON BLOCK
• Parts of Y MAIN D-D CON BLOCK 1
• Parts of Y MAIN D-D CON BLOCK 2
PDP-4280HD
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Parts that Require Whole-Assy Replacement
Function Name
AV switch
RGB switch
EEPROM
MAIN VDEC
A/D Converter
EEPROM
EEPROM
EEPROM
Flash ROM
Flash UCOM
Flash ROM
The assembly must be replaced as a unit, and no
part replacement is allowed.
No adjustment is required after replacement of parts
other than those mentioned above.
No adjustment is required after replacement of parts
other than those mentioned above.
No adjustment is required after replacement of parts
other than those shown in "8.5 ADJUSTMENTS
WHEN THE DRIVE ASSYS ARE REPLACED.
No adjustment is required after replacement of parts
other than those shown in "8.5 ADJUSTMENTS
WHEN THE DRIVE ASSYS ARE REPLACED.
No adjustment required
No adjustment is required after replacement of parts
other than those mentioned above.
No adjustment required
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Part No.
R2S11006FT
R2S11001FT
BR24L01AFJ-W
CM0048BF
AD9985KSTZ-110
BR24L02FV-W
BR24L02FV-W
BR24L02FV-W
AGC1049
AGC1037
AGC1039
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