Disassembly Procedure - Pioneer PORTATONE PSR-280 Service Manual

DISASSEMBLY PROCEDURE

1. Lower Case Assembly
1-1 Remove the battery cover assembly. (Fig. 1)
[270A]
[260A]
[260A]: Bind Head Tapping Screw-P 3.0 x 12 MFZN2Y (EP600300)
2. Circuit Board and Units on the Panel Asseembly
After removing the lower case assembly. (See Procedure 1.)
Remove the following screws, each circuit board and can be removed. (Fig. 2)
Circuit Board and Unit
DM
AM
PN(PW)
MKS3
Keyboard Assembly
Speaker R Lower shield box
(Tweeter)
[250C] [280]
[250C]
Speaker R
(Woofer)
–
[270B]
Keyboard assembly
[250C]: Bind Head Tapping Screw-P 3.0 x 8 MFZN2Y (EP600280)
[260A] Battery cover assembly
Ref. No.
[260B] Bind Head Tapping Screw-P 3.0 x 12 MFZN2Y
[240] Bind Head Tapping Screw-B 3.0 x 8 MFZN2Y
[250A] Bind Head Tapping Screw-P 3.0 x 8 MFZN2Y
[250B] Bind Head Tapping Screw-P 3.0 x 8 MFZN2Y
[A] Push Knob
[30] Bind Head Tapping Screw-P 3.0 x 8 MFZN2Y
[270B] Bind Head Tapping Screw-P 3.0 x 25 MFZN2Y
DM
[260B]
[240]
+
[260B]
1-2 Remove the fifteen (15) screws marked [260A] and two
(2) screws marked [270A]. The lower case assembly can
then be removed. (Fig. 1)
[260A]
[260A]
[270A]: Bind Head Tapping Screw-P 3.0 x 25 MFZN2Y (VK228100)
(Fig. 1)
AM
[260B] [250A]
[250A]
[250A] [250A]
[270B] [A]
[280]: Bind Head Tapping Screw-P 4.0 x 8 MFZN2BL (VB931600)
(Fig. 2)
PSR-280/PSR-282
Lower case assembly
Screw
(EP600300)
(EP600250)
(EP600280)
(EP600280)
(VQ218800)
(EP600280)
(VK228100)
PN(PW)
[250B] [280] [250C]
– +
MKS3
[30]
[270A]
[260A]
QTY
5
9
7
2
1
2
3
Speaker L
(Tweeter)
[250C]
Speaker L
(Woofer)
[270B]
9