Yamaha Disklavier Silent Mark III Service Manual page 19

19. Circuit Boards and Units
(Time required: About 7 minutes each)
19-1 Remove the lower board (front). (See procedure A-5.)
19-2 Remove the individual circuit boards and units. (Fig.8)
Front view
DRIVE C
[091S] x 4
Top view
DRIVE B
Pedal drive unit
[091S]: Truss Head Tapping Screw-1 4.0X16 MFZN2Y (03747340)
[141S]: Truss Head Tapping Screw-1 4.0X16 MFZN2Y (03747340)
[142S]: Truss Head Tapping Screw-1 4.0X12 MFZN2BL (03747270)
[151S]: Truss Head Tapping Screw-1 4.0X16 MFZN2Y (03747340)
DRIVE A
SUB POWER SUPPLY
[151S] x 2
Pedal sensor unit
(Fig.8)
PK-CTL
[142S]
MN
DB
MN-PS unit
PWB
[141S]
MN-PS unit
DU1A
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