14
SX-20-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
4.4 GND MAP DIAGRAM
GND map
BACK CHASSI
ST3.3V
V+15V
V+15V
V+15V
V+9V
GND_A
GND_D
VREF
V-15V
BLUE
RED
ST3.3V
ST3.3V
WIRE403B
(CHGND)
WIRE401
(NM)
WIRE402
(NM)
C425(NM)
R466(NM)
C417(NM)
C140(NM)
C141(22uF)
C142(NM)
C143(22uF)
C402(0.1uF)
C403(0.1uF)
C413(0.1uF)
C449(0.1uF)
C131(22uF)
C134(NM)
C121(10uF)
C130(100uF)
eala
TONE
Function/E.Vol IC
E.VOL
D402(NM)
D403(NM)
R459(NM)
R218(100 ohm)
R215(100 ohm)
Pre Amp
(+16dB)
C436(NM)
R403(NM)
WIRE402
(CHGND)
AC from Main Trans
FL
FL uCOM
CPU/
EEPROM
ST3.3V
ST3.3V
V+15V
V+15V
C167
(10uF)
C166
(10uF)
T/OUT_+5V
V-15V
REFERENCE
POINT
V+6V
V-6V
J367(NM)
J369(NM)
J370(NM)
J159(NM)
J311(0 ohm)
SACD/CD
NETWORK
REC_IN
REC_OUT
PHONO
TUNER
BD109
(NM)
R804(0 ohm)
J393(0 ohm)
C713(0.022uF)
C715 (NM)
Screw
(CHGND)
Screw
(CHGND)
Screw
(CHGND)
Screw
(CHGND)
C132R(NM)
C707R(47uF)
C132L(NM)
C707L(47uF)
GW1 GND
(NM)
V-30V
(for FL)
D407(KDS4148)
D406(KDS4148)
C713 (0.01uF)
MAIN ASSY
A
D
HP ASSY
C
POWER SW ASSY
E
LED ASSY
F
RMC ASSY
G
SPK SW
AB ASSY
B
FRONT ASSY
IC400
IC102
IC101
IC700
IC103
IC106
IC105
IC601
IC605
J301(0 ohm)
J373(0 ohm)
Summary of Contents for SX-20-K
Page 7: ...7 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 11: ...11 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F IC502 IC503 IC301 ...
Page 32: ...32 SX 20 K 1 2 3 4 A B C D E F 1 2 3 4 Pin Function ...
Page 47: ...47 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F 1 x9 x5 x3 x3 x5 x6 x6 x5 x2 x15 x2 x2 x2 x4 x4 A A A ...