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2-1. Notes on Service
2-1-1. Extension Board
The extension board is available to check every printed
circuit board and to perform adjustment.
Extension board
Sony P/N
EX-512
A-8273-247-A
2-1-2. Notes on Repair Parts
1. Safety Related Components Warning
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Components marked ! are critical to safe operation.
Therefore, specified parts should be used in the case of
replacement.
2. Standardization of Parts
Some repair parts supplied by Sony differ from those
used for the unit. These are because of parts common-
ality and improvement.
Parts list has the present standardized repair parts.
3. Stock of Parts
Parts marked with "o" at SP (Supply Code) column of
the spare parts list may not be stocked. Therefore, the
delivery date will be delayed.
4. Units Representation
The following represented units are changed or
omitted in writing.
Units
Capacitance
uF
Inductance
uH
Resistance
Z
dC
Temperature
HDC-750A
Section 2
Service Overview
To be extended
VA-158
MX-59
PR-200
DL-65
IE-44
Plug-in boards for HDCA
Representation
uF
uH
Abbreviation
XXX-DEG-C
2-2. Location of Printed Circuit Boards
MB-570
PS-419
IF-569
SW-806
CN-1334
SW-687
SW-689
PA-173
DU-1
CN-1674
DC/DC converter
CN-1034
IE-44
DL-65
PR-200
MX-59
VA-158
SW-688
SW-696
NR-66
TG-209
RP-108
DR-376
Driver board
2-1 (E)
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