Description Of Major Ics - JVC KS-F54 Service Manual

KS-F545
4.1 HA12231FP-X (IC401) : PB Equalizer/Line Mute/Music Sensor
• Pin layout & Block diagram
Vcc
14 13
Ripple Filter
ALC
1 2
GND
• Pin function
Pin No. Symbol
1 VREF
2 FIN(R)
3 RIN(R)
4 EQOUT(R)
5 TAI(R)
6 PBOUT(R)
7 MS GV
8 120/70
9 Mute
10 FOR/REV
11 Vcc
12 MS
13 MSDET
14 RIP
15 PBOUT(L)
16 TAI(L)
17 EQOUT(L)
18 RIN(L)
19 FIN(L)
20 GND
1-22 (No.49828)
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Description of major ICs

12 11 10 9 8
Amp.
Ch2
Amp.
Ch1
3 4 5 6 7
I/O
O Reference output
I Equalizer input
I Equalizer input
O Equalizer output
I Tape input
O PB output
- MS gain terminal
I Mode control input
I Mode control input
I Mode control input
- Power supply
O MS output (to MPU)
- Time constant pin for MS rectifier
- Ripple filter
O PB output
I Tape input
O Equalizer output
I Equalizer input
I Equalizer input
- Ground
SECTION 4
Function