Q
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
Signal ground wire
not installed
to DM-CN102
POWER AMP
7W 2ch
POWER AMP 0.65W 2ch
POWER AMP 17W
INVERTER
Photo Coupler
LINE TRANSCEIVER
OP AMP
OP AMP
OP AMP
REG12V
OP AMP
EQUALIZER
OP AMP
OP AMP
EQUALIZER
to DM-CN105
28CC1-8820769-002
2
MASTER
VOLUME
to DM-CN908
to DM-CN109
TO SERVICE PERSONNEL
Critical Components Information
Components having special characteristics are marked
and must be replaced with parts having specifications
equel to those originally installed.
!
See parts list for details of circuit board
component parts.
Note:
: Mylar Capacitor
: Ceramic Capacitor
: Semiconductive Cera Cap
DIODE
S3V20 (VR313500)
1: ANODE
2: CATHODE
2
1
NJM78L05UA(XJ598A00)
REG5V
1: OUTPUT
2: COMMON
3: INPUT
1
2
3
NJM7812FA(XJ608A00)
REG12V
1
2
3
1: OUTPUT
2: COMMON
3: INPUT
AN7812F(XM169A00)
REG12V
1
2
3
1: INPUT
2: COMMON
3: OUTPUT
µPC2933T-E1(XS516A00)
REG3.3V
1: V in
2: GND
3: V out
1
2
3
PSR-A1000
PSR-A1000
PSR-A1000
PSR-A1000 OVERALL CIRCUIT DIAGRAM 3/3 (AM, VR, HP, SW, MKS5F, MK-L, MK-H)
Power Supply
DC IN
STANDBY/ON
AUX OUT
(LEVEL FIXED)
OUTPUT
PHONES
MIDI
TO HOST
IN
OUT
FOOT PEDAL
LCD CONTRAST
2
1
(SWITCH)
R
L
R
L/L+R
to DM-CN501
HOST SELECT
MAC
MIDI
PC2 PC1
Tweeters
Woofers
VU648200
V8142700
VU648100
MKS5F
MK-H
AM
MK-L
CPU KBS
HP
28CC1-8820769-002
11
SW
VR
28CC1-8820769-002
11
28CC1-8820769-002
11
28CC1-8820769-001
11
SI-8050S(LF1103)
(XT514A00)
REG5V
1: V in
2: SW out
3: GND
4: V os
5: S.S
1
3
2
4
5
SFPB-62V (VZ060500)
DIODE
1: ANODE
2: CATHODE
2
1
