Disassembly Procedure; Lower Case Assembly; Sm Circuit Board; Hp Circuit Board - Yamaha PSR-1500 Service Manual

PSR-1500/PSR-3000

DISASSEMBLY PROCEDURE

Caution: Be sure to attach the removed filament tape just as it was before removal.
Notes on Flat Cable
Contacts are visible from the back. Pay attention not to
insert and install the cable to the connector inversely.
(Photo 1)
1.

Lower Case Assembly

(Time required: About 3 minutes)
1-1. Remove the sixteen (16) screws marked [420] and the
two (2) screws marked [430A]. The lower case assembly
can then be removed. (Fig. 1)
* Note that the connectors on the SM and AM
circuit board are connected to each other.
2.

SM Circuit Board

(Time required: About 4 minutes)
2-1. Remove the lower case assembly. (See procedure 1.)
2-2. Remove the two (2) screws marked [460A]. The SM case
assembly can then be removed. (Fig. 1)
2-3. Remove the four (4) screws marked [S50]. The SM circuit
board can then be removed. (Fig. 1)
Bottom view
[420]
Top view
Speaker grille L assembly
Push knob
[S50]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y(EP600250)
[420]: Bind Head Tapping Screw-P 3.0X12 MFZN2Y(EP600300)
14
SM
[460A] [S50]
Lower case assembly
This figure shows the PSR-1500.
Front Side (Printed Side)
3.

HP Circuit Board

(Time required: About 4 minutes)
3-1. Remove the lower case assembly. (See procedure 1.)
3-2. Remove the three (3) screws marked [460B]. The HP
circuit board can then be removed. (Fig. 2)
4. Wheel Assembly, PB Circuit Board
(Time required: About 3 minutes)
4-1. Remove the lower case assembly. (See procedure 1.)
4-2. Remove the two (2) screws marked [560A]. The PB circuit
board with the wheel assembly can then be removed.
(Fig. 2)
4-3. Remove the wheel assembly from the PB circuit board.
(Fig. 2)
SM case assembly
[S50]
[460A]
Speaker grille R assembly
[430A]: Bind Head Tapping Screw-P 3.0X25 MFZN2Y(VK228100)
[460A]: Bind Head Tapping Screw-B 3.0X8 MFZN2Y(EP600250)
(Fig. 1)
Back Side
(Photo 1)
[420]
[430A]
[420]
Upper case assembly