Mdr-14 Board Replacement - Sony HDW-750 Maintenance Manual

6-25. Circuit Boards of the
Mechanical Deck Assembly
Replacement
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For replacement of the MDC-13 board, refer to
"7-36. MDC-13 Board Replacement".

6-25-1. MDR-14 Board Replacement

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For a model in which the MDR-14 board is
installed with four step screws, prepare a new
precision screw (3-729-013-41 : P1.4 x 3.5) in
replacing the board.
1. Remove the mechanical deck assembly.
(Refer to Section 1-15-12.)
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When the mechanical deck assembly is going
to be removed for maintenance, place a
protection sheet underneath the mechanical
deck assembly beforehand.
2. Disconnect the flexible card wire from the
connector (CN3) on the MDR-14 board.
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Life of flexible card wire will be significantly
shortened if it is folded. Be very careful not
to fold the flexible card wire.
3. Remove the screws (four step screws) or the
screws (three step screws, one precision
screw). While removing the connector from
the drum assembly, remove the MDR-14
board.
4. Install the new MDR-14 board by reversing
the steps of removal.
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When installing the new MDR-14 board, use
a precision screw for the position A.
Adjustment after Replacement
Drum Phase Adjustment (Refer to Section 10-5-4.)
HDW-750/750CE V1
6-25. Circuit Boards of the Mechanical Deck Assembly Replacement
Improved Type
Precision screw
P1.4 x 3.5
Step
screws
CN3
Flexible card wire
Protection sheet
Former Type
Step screw
MDR-14 board
A
Connectors of
drum assembly
6-39