Disassembly Procedure - Yamaha PORTATONE PSR-9000 Service Manual

DISASSEMBLY PROCEDURE

1 Lower Case
1-1 Remove the twenty-eight (28) screws marked [310a]
and the six (6) screws marked [380]. The lower case
can then be removed. (Fig. 1)
2 Circuit Board & Unit
After removing the lower case, remove the following
screws. Each circuit board and unit can then removed.
(Fig. 2)
Circuit Board & Unit
MIC-HP Circuit Board
MIC-VR Circuit Board
(INPUT VOLUME)
AJACK Circuit Board
DJACK Circuit Board
SCSI Circuit Board
PITCH BEND Wheel
MODULATION Wheel
AM Circuit Board
POWER SUPPLY UNIT
[700b]
DJACK
[310]: Bind Head Tapping Screw-B 4.0X14 MFZN2Y (EP600750)
[380]: Bonding Head Screw 3.0X8 MFZN2BL (VP157800)
(Fig. 1)
Ref. No.
[480a] Bind Head Tapping Screw-B 3.0X8 MFZN2Y
[480b] Bind Head Tapping Screw-B 3.0X8 MFZN2Y
[770] VR Knob
[700a] Bind Head Tapping Screw-B 3.0X10 MFZN2BL
[700b] Bind Head Tapping Screw-B 3.0X10 MFZN2BL
[730] Pan Head Screw 2.5X6 MFZN2BL
[480c] Bind Head Tapping Screw-B 3.0X8 MFZN2Y
[480d] Bind Head Tapping Screw-B 3.0X8 MFZN2Y
[40a] Bind Head Tapping Screw-B 3.0X10 MFZN2BL
[330] Bind Head Screw-1 4.0X12 MFZN2Y
SCSI
[730]
Power Supply Unit
(Fig. 2)
[380] x 6
Lower Case
Screw
[330] [700a]
AJACK
AM
[40a]
PSR-9000
[310a] x 28
Prat No. QTY
EP600250 6
EP600250 4
V2300100 1
EP600140 8
EP600140 10
VS206600 2
EP600250 2
EP600250 2
EP600140 8
EG340030 8
Pitch Bend Wheel Modulation Wheel
[480d]
[480c]
[480a]
MIC-VR MIC-HP
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