Yamaha PortaTone PSR-640 Servicehandleiding - Pagina 15
Blader online of download pdf Servicehandleiding voor {categorie_naam} Yamaha PortaTone PSR-640. Yamaha PortaTone PSR-640 18 pagina's.
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A
B
C
PSR-740 CIRCUIT DIAGRAM (DM1/2, MKS3, MKH, MKL, INV)
1
2
CPU
3
28CC1-8812655
4
DM
1/2
5
to PN1-CN8
6
to JACK-JK5
7
to MIC-JACK - CN5
8
9
10
REGULATOR +9V
REGULATOR +5V
11
DC-DC CONVERTER
to AM-CN310
12
PSR-740
A
B
C
D
E
F
G
MKH
MKS3
MKL
FDC
SRAM 1M
CPU
DRAM 4M
DRAM 4M
FDC
Floppy Disk Drive
D
E
F
G
H
I
J
AND
OR
DECODER
OR
AND
OR
INVETER
OR
EPROM MAIN1 32M
D-FF
EPROM MAIN2 32M
DECODER
D-FF
INVERTER
LCDC
INVERTER
H
I
J
K
L
M
N
28CC1-8811360
TRANSISTOR ARRAY
to PN1-CN2
Note : See parts list for details of circuit board
TRANSISTOR ARRAY
to PN1-CN1
TRANSISTOR ARRAY
SRAM 256K
N.C.
28CC1-8814267
K
L
M
N
O
P
Q
PSR-740
1
2
3
28CC1-8811360
4
5
6
:
Ceramic Capacitor
: Mylar Capacitor
: Metal Oxide Film Resistor
component parts
7
8
L C D
9
to Back - light Assembly
10
INV
11
2NA-8814265
12
PSR-740
O
P
Q