Samsung MM-28 Service Manual page 44

Block Diagrams
KA2229A : JIC1
PBOUT(2)
24
Vcc
16
Vcc 17
REC GND
9
PB OUT(1) 1
BA3950 : RIC1
9-4
PB R/P
NF(2) PR IN(2) SW
23 22 21 8
100K
N.F
PRE
INPUT
REC.BIAS
RECORD
LREF
PB.BIAS
MODE CONTROL
PLAYBACK
/BIAS CIRCUIT
LREF
INPUT
PRE
NF
100K
2 3 4 5
PU PB IN(1) A/B
NF(1) SW
MUTE MUTE
SW (IN2) ALC RECOUT(2)
20 19 18 15
ALC
DET
7 6 10
PB GND MUTE REC
IN(1) OUT(1)
100K
N.F
14
REC NF(2)
PRE
INPUT
REC IN(2)
13
12 REC IN(1)
INPUT
PRE
REC IN(1)
11
N.F
100K
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