Sony BKDS-PA3291, Руководство по обслуживанию

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2-6(E)
BVS-A3232
2-8. MB-721 Board Replacement
w
For your safety, turn off the power and unplug the power plug from the outlet before starting the replace-
ment.
Replacement
1. Remove the top plate. (Refer to “2-1. Removal of
Cabinet”.)
2. Remove the eight screws, then take out the stay.
3. Remove the connector panels from the upper slot to
the lower slot. (Refer to Section 2-7.)
4. Remove the three screws fixing the MB frame.
5. Remove the eight screws and the two connectors
(CN1, CN2) on the MB-721 board.
6. Replace and attach the MB-721 board in the reverse
order of steps 1 to 5.
n
Attach the connector panels from the lower slot to the
upper slot.
2-8. MB-721 Board Replacement
Stay
PTTWH 3
X
6
MB frame
CN1
CN2
MB-721 board
PTTWH 3
X
6
PTTWH
3
X
6
PTTWH 3
X
6