Sony Aiwa CX-JN20 Service Manual page 14

6-19. SCHEMATIC DIAGRAM – KEY Section –
CN303
23P
A-GND
MIC-OUT
I-MIC
VDD
D-GND
K7
K7
K8
K8
K1
K1
K2
K2
K5
K5
K6
K6
K3
K3
K4
K4
(Page 35)
O-POWER LED
LATCH(ECHO)
DATA(ECHO)
CLK(ECHO)
V-BASS
VM
B10
B9
B8
VDD(STBY)
R301 R302 R303 R304
0 1k 820 1k
B8
S301 S302 S303
PLAY/ STOP/ TUNING DOWN PAUSE/
PRESET CLEAR SET
R311 R312 R313 R314 R315
0 1k 820 1k 1.2k
B9
S307 S308 S309 S310
MODE ENTER CD TAPE A/B
R321 R322 R323 R324
0 1k 820 1k
B10
S317
S315 S316
POWER DISPLAY ALBUM
PTY
LED901
LED201
SLR325-URC
SLR325-VC
i-BASS
STANDBY/ON
B10
R231
1k
B9
B8
R801
10k
R802 C801
10k 1000p
R305 R306
1.2k 1.2k
S306
S304 S305
R805
i-BASS
10k
TUNING UP
R806 C803
R316 R317 R318 10k 1000p
1.2k 1.8k 1.8k
S311 S312 S313
S314
TUNER VIDEO/ REC
SYNC DUB
BAND AUX REC MUTING
R325
1.2k
KEY3
D-GND
S318
NC
ALBUM
NC
NC
37 37
R803 R809
10 10k
A
1 S801
VOLUME
C
2
B
3
C802 R804 R810 C805
1000p 10 10k 1000p
R807 R813
10 10k
A
1 S802
BASS
C
2
B
3
C804 R808 R814 C807
1000p 10 10k 1000p
CN301 CN302
R326
5P 5P
1.2k
KEY3
D-GND
S319
NC
NC
NC OPEN/CLOSE
CX-JN20/JN30
R811
10
A
1 S803
TREBLE
C
2
B
3
C806 R812
1000p 10
R815
10
A
1 S804
MULTI JOG
C
2
B
3
C808 R816
1000p 10
R327 R328 R329
1.8k 1.8k 2.7k
S320 S321 S322 S323
3 2 1 DISC
CHANGE
DISC DIRECT PLAY