JVC MX-G50 Service Manual page 31

BA4560 (AIC3, AIC4, AIC5, AIC6, AIC7, FIC4, HIC1, JIC2) : OP amp.
1.Pin layout
OUT1 1 8
– IN1 2 7
1ch
+
–
2ch
+ IN1 3 6
+ –
V 4 5
EE
KA22291(JIC1) : RB/REC PRE AMP
1.Pin layout
24 23 22 21 20 19 18
KA22291
1 2 3 4 5 6 7 8 9 10 11 12
2.Block diagram
PB NF(2)
100k
24
PB OUT(2)
PRE
RECORE
16
Vcc
I.REF
PLAYBACK
17
Vcc
I.REF
REC GND 9
1
PRE
PB OUT(1)
100k
V
CC
OUT2
– IN2
+ IN2
17 16 15 14 13
PB IN(2) R/P SW
22 21 8
23
INPUT
REC.BIAS
MODE CONTROL
/BIAS CIRCUIT
PB.BIAS
INPUT
N.F
2 3 4 5
PB NF(1) PB IN(1) A/B SW
MUTE MUTE REC
SW IN(2) ALC OUT(2)
20 19 18
15
7 6 10
PB MUTE REC
GND IN(1) OUT(1)
MX-G50/MX-G56
100k
NF
14
REC NF(2)
PRE
INPUT
13
REC IN(2)
ALC
DET
12
REC IN(1)
INPUT
PRE
11
REC NF(1)
N.F
100k
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