Gnd Map Diagram - Pioneer SX-20-K Service Manual

1

4.4 GND MAP DIAGRAM

F
E
A
RMC ASSY
LED ASSY
ST3.3V
V+15V
G
SPK SW
B
WIRE403B
(CHGND)
AB ASSY
WIRE401
(NM)
C425(NM) C436(NM)
R466(NM) R403(NM)
C
ST3.3V
V-30V
(for FL)
B
FRONT ASSY
D
E
T/OUT_+5V
V+15V
IC103
C167
C166
(10uF)
(10uF)
F
14
1
2
C
POWER SW ASSY
ST3.3V
ST3.3V
WIRE402
WIRE402
(CHGND)
(NM)
AC from Main Trans
FL
C402(0.1uF)
C403(0.1uF)
IC400
FL uCOM C413(0.1uF)
C449(0.1uF)
GW1 GND
(NM)
ST3.3V
IC101
IC102
CPU/
EEPROM
V+6V
J367(NM)
C132R(NM)
J369(NM)
C707R(47uF)
IC700
V-6V
2
3
GND map
V+15V
IC601
R459(NM)
Pre Amp
C417(NM)
(+16dB)
D402(NM)
D403(NM)
V-15V
GND_A
GND_D
V+15V
IC105
J311(0 ohm)
C132L(NM)
C707L(47uF)
IC106
V-15V
REFERENCE
POINT
SX-20-K
3
4
A
MAIN ASSY
R218(100 ohm)
C140(NM)
C141(22uF)
C142(NM)
J301(0 ohm)
C143(22uF)
J373(0 ohm)
R215(100 ohm)
V+9V V+15V
VREF
C131(22uF)
C134(NM)
4
D
HP ASSY
BACK CHASSI