JVC KS-FX230 Service Manual page 23

Standard schematic diagrams
Main amp. section
6
J1
R774
1.5K
5
C772
R773
2.2/50
1K R772
10K
C773
0.001
Q772
Q771
CJ701
4
5V
D718
10V
14V
R719 3.3K LCD.SO
R718 3.3K LCD.SCK
R720 3.3K LCD.CE
R5V
R717 100
KEY2
R716 100 KEY1
R715 100
KEY0
DETACH
3
CP702 TAPE.L
TAPE.R
F/R
9V
TAPE.14V
MS.OUT
DOLBY
FF/REW
MOTOR
MODE
STDBY
TAPEIN
SUBMO-
SUBMO+
TAPEEND
KICK
2
1
A
B
KS-FX230
TU1 QAU0058-001
L1
4.7uH
R1
10
R2 1K
R3 1K
Q3 Q1
Q5
Q2
D701
D714
D715
IC701
R727
FF/REW 47K
IFREQ
MONO
PCNT5V
ACC
KICK
R725 47K
R708 47K
47K
R702
R703 47K
47K
R704
R705 47K
R706 47K
R707 47K
D
C
KS-FX230
Q989
D990 C988
47/16
ACC
Q972
MUTE
R163
LRO
820
D161 R165
2.2K
D261
R265
MUTE
2.2K
R757
47K
R263
RRO
820
R761 R758
BUS.INT 1K
47K
BUS.SCK R763 1K
R752 10K
IC751 HD74HC126P
BUS.I/O
SCK
R762
BUS.SO
R751
BUS.SI 1K SI/SO
1K
R131
22K
C137
0.22 0.033
C136
C702
22P
IC931 TEA6320T
C701
27P
EO
C236
0.22 0.033
FM.OSC TAPE.L C237
AM.OSC TAPE.R
R63 R231
20K 22K
IF.C
C705
10/16 R541 R543 12K
R546 180K
C542
D541
0.047 R133
150K
KEY0
Q541
KEY1
C541
R233
1/50
150K
C703
100/6.3
TAPE.14V
Q987
R710 4.7K
MEM.DET
C704
R712 3.3K R5V
0.22
5V
R709 4.7K L782 47uH
C785
33/10
TUNER_9V 6.8
R787
9V
14V
ACC
Q785
L781
D781
47uH
Q784
Q789
R786
IC790
KIA7810PI
1K
Q786
Q783
C793 C792
0.1 0.33
E
F
2-2
CJ921
R164
100
Q161
Q261
R264
100
IC981
HA13158
R151
R152
27K
82K C986
10/16
C152
470P C983 0.01
C162
470P
R161
R162
27K
82K
R262 C971
R261
82K
27K
4.7/25
C262
470P
R722
C982
C252
0.01
3.3K
470P
C951
R252
82K
4.7/25
R251
27K
R951 4.7K
47K
R971
R931 10
R972
Q782 Q971
470
R988 2.4K
ACC
Q781
C984
10/16
CP981 QNZ0002-001
IC781 C981
RFO+
2200/16
BA3918-V1
RRO+
LRO+
D981
LFO+
1N5401TM
RFO-
RRO-
LRO-
LFO-
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
G H
CD SIGNAL
FM/TUNER SIGNAL
AM SIGNAL
TAPE PB/MAIN SIGNAL (Front)
TAPE PB/MAIN SIGNAL (Rear)
I