Sony HKCU-901 User Manual
2-5 (E)
HDCU-900 MM
2-5. Replacing the PS-587 Board
Replacement Procedure
1.
Turn off the main power and disconnect the plug from
the outlet.
n
Wait for at least three minutes before starting replace-
ment, because there are electrically live blocks inside
the machine that could cause electric shock.
the outlet.
n
Wait for at least three minutes before starting replace-
ment, because there are electrically live blocks inside
the machine that could cause electric shock.
2.
Remove the rear panel. (Refer to Section 2-3.)
3.
Disconnect the connectors (CN23, CN24) of the DC
fan. (Refer to Section 2-4.)
fan. (Refer to Section 2-4.)
4.
Remove the three screws and remove the MB-902
board from the board-to-board connector connected to
the PS-587 board.
board from the board-to-board connector connected to
the PS-587 board.
5.
Attach a new PS-587 board in reverse order of step 4.
n
When connecting the PS-587 board and MB-902
board, the MB-902 board may get out of position by
one pin. Connect the boards securely with great care.
n
When connecting the PS-587 board and MB-902
board, the MB-902 board may get out of position by
one pin. Connect the boards securely with great care.
2-5. Replacing the PS-587 Board
PSW3
x 6
PS-587 board
MB-902 board
Board-to-board connectors
Be careful to
connect the
connectors
because they
may get out of
position by one
pin.
connect the
connectors
because they
may get out of
position by one
pin.
PS-587 board
MB-902
board
board
Connector
connection
at the correct
position
connection
at the correct
position
Board-to-board
connectors of
PS-587 board
connectors of
PS-587 board
Board-to-board
connectors of
MB-902 board
connectors of
MB-902 board
Connector
connection
at incorrect
position
connection
at incorrect
position
Board-to-board connectors