Pioneer PORTATONE PSR-280 Service Manual page 40

A B
PSR-280/PSR-282 OVERALL CIRCUIT DIAGRAM 2/2 ( PN ( PNL, PNR, PNC ) , MK-H, MK-L, MKS3, LCD )
1
2
PN ( PNL )
TOUCH ON/OFF
3
4
5
A-B REPEAT
ACMP SYNC
SYNC
START/STOP
ON/OFF
STOP START
PAUSE
6
PN ( PNC )
7
SONG
8
9
10
11
12
13
14
15
16
: Semiconductive Cera Cap
Note : See parts list for details of circuit board
component parts.
17
PSR-280/PSR282
A B
C D E
HARMONY ON/OFF
REVERB
YES2
DITIONARY
LESSON L LESSON R
MAIN/
INTRO/ENDING AUTO FULL
REW FF TEMPO/TAP
28CC1-8816890
STYLE VOICE
28CC1-8816890
to DM-CN102
CPU
28CC1-8812655
MK-H
MK-L
C D E
F G
PN ( PNR )
to DM-CN702
TRANSPOSE
RECORD 1
MKS3
to AM-CN912
F G
H I J
DEMO
METRONOME
PORTABLE
GRAND
2 3 4 5 ACMP
to DM-CN701
LCD
LCD DRIVER
LCD
28CC1-8811360
H I J
K L
PSR-280/PSR282
1
2
1 2 3
3
4 5 6
7 8 9
4
– +
/NO 0 /YES
5
MEMORY 1 2 BANK
28CC1-8816890
6
7
8
9
10
11
28CC1-8816890
12
13
14
15
16
28CC1-8811360
17
PSR-280/PSR282
K L