JVC KS-LX200R Service Manual page 18

KS-LX200R
CXA2510AQ (IC401) : Head AMP / Dolby
1. Pin layout & Block diagram
PBFB2 31
PBRIN 32
PBREF2 33
PBFIN2 34
VCT 35
VCT
PBGND 36
PBFIN1 37
PBREF1 38
PBRIN1 39
PBFB1 40
2. Pin functions
Pin No. Symbol
PBEQ1
1
PBOUT1
2
Vcc
3
TAPEIN1
4
AUXIN1
5
MSLPF
6
LINEOUT1
7
TCH1
8
NC
9
G2FB
10
G1FB
11
MSTC
12
DGND
13
MSUOT
14
NC
15
1-18
120 /70
T2
X1
NR BIAS
F2
TAPE / AUX
TAPE EQ
FWD / RVS
Vcc
+
LPF
-
F1
F3
X1
T1
120 /70
I/O
O
Resistance for selecting the equalizer amplifier time constant.
O
Playback equalizer amplifier out put.
- Power supply
TAPE input.
I
External input.
I
- Cut-off frequency adjustment of the music sensor LPF.
Line out.
O
- Time constant for the HLS.
Non connection.
-
- Music signal interval detection level setting.
Time constant for detecting the music signal interval.
- Logic ground (Connect to GND)
Music sensor output.
O
I Non connection.
NR
20 MSMODE
OFF/
B / C
19 DRSW
MS MODE
18 TAPESW
17 INSW
NR MODE
16 NRSW
15 MRMODE
MS ON/
OFF
DET
14 MSOUT
13 DGND
12 MSTC
11 G1FB
NR
Functions