An7345(Ic302) Pb/Rec Amp - JVC UX-V30 Service Manual

UX-V30

AN7345(IC302) PB/REC AMP

1
L1
L2
24
23
2
1
R2
R1
2. Pin Function
Pin
Symbol
I/O
No.
I
1 Playback amplifier input
R1
2
Playback amplifier input
R2
I
3 I
NF2 Playback amplifier negative feedback
4 O
OUT2 Playback amplifier output
Equlaizer
5 EQ2 I
6 CTL2 I Pre Amplifier input swithing time
constant
RIN2 I
Recording amplifier input
7
8 RNF2 I Recording amplifier negative feedback
ROUT2 O Recording amplifier output
9
ALC low cut
LC I
10
11 I ALC low pass filter
LPF
GND I
12
1-30
NF1 OUT1
EQ1
CTL1 RIN1
22
21 20 19 18
Pre
Pre
Source
AMP
CTRL
EQ
Pre
CTRL
AMP
5
3 4 6
EQ2 CTL2
OUT2 RIN2
NF2
Function
EQ
RNF1 ROUT1 CTL
RF
16 15 14
17
ALC REPPLE
AMP
ALC ALC
AMP
7 8 9 10 11
LC
RNF2 LPF
ROUT2
Pin
Symbol I/O
No.
13 I
Vcc Power supply
14 RF I Repple filter
EQCTL I EQ control
15
16
O
ROUT Recording amplifier output
17
RNF1 Recording amplifier negative feedback
I
RIN1
18
I Recording amplifier input
Pre amplifier input swithing control
CTL1 I
19
20
EQ1 I Equlayzer
21
Playback amplifier output
OUT1 O
NF1
22 Playback amplifier negative feedback
I
Playback amplifier input
L2 I
23
Playback amplifier input
24 I
L1
VCC
13
REJ
12
GND
Function