Ic Data - Roland SPD-20 Service Notes

Apr, 1998

IC DATA

Photo Coupler(IC17 on MB)
PC-410
(15289125)
q Anode
e Cathode
r GND
t V0
y VCC
y t r
q e
Transistor(Q1, 2, 28 on MB)
2SA1037KR
(15309101)
q Emitter
w Base
e Collector
q w
e
MB Main Board Assy (pcb 22935470 1/3)
PB Panel Board Assy (pcb 22935470 2/3)
Oscillator(X1 on MB)
SG-8002
(01453945)
q 0E
r GND
t OUT
i VDD
i t
q r
Transistor(Q37 on MB)
2SB1184R F5
(15309605)
q Base
w Collector
e Emitter
q w e
+5V Voltage Regulator(IC27 on MB)
µPC78L05J
(15199231)
-5V Voltage Regulator(IC25 on MB)
µPC79L05J
(15199233)
µPC78L05J µPC79L05J
q OUT q GND
w GND w IN
e IN e OUT
q w e
Transistor(Q23 to 27, Q29 to 36
Q38 to 42 on MB)
2SC2412KR
(15319101)
q Emitter
w Base
e Collector
q w
e
SPD-20
Transistor(Q9 to 22 on MB)
DTA114EK (15329507)
Transistor(Q301,302,303 on PB)
DTC114EK (15329516)
Transistor(Q3, 6, 7, 8 on CB)
DTC343TK (15329514)
q Emitter
w Base
e Collector
q w
e
FET(Q4, 5 on MB)
2SK208Y
(15329105)
q Drain
w Source
e Gate
q w
e
15