JVC MX-DVA9 Service Manual page 54

MX-DVA9/MX-DVA9R
AN7345K (IC302) : REC/PRE amp
1.Terminal layout & block diagram
24 23 22
PRE
Amp
PRE
Amp
1 2 3
2.Pin function
Pin No.
I/O
CH1 Playback amplifier input(1)
1 I
CH1 Playback amplifier input(2)
2
I
CH1 Playback amplifier negative feedback
3
I
CH1 Playback amplifier output
O
4
I CH1 Equalizer input
5
6 O Pre amplifier input control time constant
7 CH1 Recoding amplifier input
I
CH1 Recoding amplifier negative output
8
I
CH1 Recoding amplifier output
9
O
O
10 ALC low cut
O ALC L.P.F
11
- Connect to GND
12
13 - Power supply
Repple filter
14 O
15 I Equalizer control
CH2 Recoding amplifier output
16 O
CH2 Recoding amplifier negative output
I
17
I CH2 Recoding amplifier input
18
Pre amplifier input control
19 O
20
CH2 Equalizer input
I
21
O CH2 Playback amplifier output
22 I CH2 Playback amplifier negative feedback
23 I CH2 Playback amplifier input(2)
24 I CH2 Playback amplifier input(1)
1-54
21 20 19 18 17
Pre
REC
Source
Amp
CTRL
EQ
REC
CTRL
Amp
4 5 6 7 8
16 15 14 13
REPPLE
REJ
ALC
9 10 11 12
Function