Yamaha PDM-4210 Service Manual page 47

12.4.3 Y-SUS Circuit Board Removal/Installation Procedure
When removing the circuit board after the main power is turned on/off, wait for at
Note
least one minute before starting to remove the circuit board.
If the circuit board removal is started immediately after turning off the main power,
it can result in electric shock or damage to the circuit due to residual electric
charge.
Remove the circuit board by following the steps below. To install the circuit board, reverse the
removal procedure.
(1) Remove the fixing screws (M3x8) fixing SDM at 4 locations.
(2) Pull out the SDM board horizontally and disconnect the connectors (CN34, CN35).
(3) Release the lock of the FPC connector (CN31) and disconnect the signal cable.
(4) Disconnect the cables from the VH connectors (CN32, CN33).
(5) Remove the fixing screws (M3x8) fixing YSUS at 5 locations.
(1)
(2)CN34
(1)
(1)
(2)CN 3
(1)
Note
(5)
(5)
(5)
(5)
(5)
PDM-4210
(4)CN32
(3)CN31
(4)CN36
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