A
B
C
D
E
F
G
H
I
J
K
L
1
2
3
4
5
6
7
8
PSR-350
■
PSR-350 OVERALL CIRCUIT DIAGRAM 1/2 (DM, AM, VR, PW, TW-L/R)
DM : 28CC1-8819534
AM, TW-L/R : 28CC1-8819535
VR, PW : 28CC1-8819536
STANDBY/ON
Z
Z
to PN 1-CN2
to PN 1-CN1
to LCD-CN1
CN1
CN2
to MKS5-CN1
DM
AM
VR
PW
TW
TW
DC IN 10-12V
to BATTERY
PHONES/OUTPUT
FOOT SWITCH
MIDI IN
MIDI OUT
to BACK LIGHT ASSEMBLY
MASTER VOLUME
FDD
L
R
L
R
WOOFER
TWEETER
-L
-R
P-BUS POWER
C-BUS POWER
SRAM 1M
SRAM 1M
PROGRAM ROM
32M
MIDI I/F
AND
WAVE ROM 32M
FDC
SWX00B
DRAM 4M
REGULATOR
+3.3V
REG5V
SYSTEM RESET
DAC
LPF
POWER AMP
DC-DC CONVERTER
REGULATOR
+5V
WARNING
Components having special characteristics are marked
Z
and must be replaced
with parts having specification equal to those originally installed.
REG5V
NJM78L05A (XC520A00)
2
1
3
3: OUTPUT
2: GND
1: INPUT
REG5V
S81250SGY-Z (XT625A00)
2
1
3
3: OUTPUT
2: INPUT
1: GND
REG3.3V
µ
PC29M33HF (XT333A00)
1
2
3
3: OUTPUT
2: COMMON
1: INPUT
:
Mylar Capacitor
:
Ceramic Capacitor
: Semiconductive Ceramic Capacitor
:
Metal Oxide Film Resistor
Note : See parts list for details of circuit board component parts.
