JVC MX-K30 Service Manual page 22

Description of major ICs
AN22000A (IC611) : CD-DA Head Amp.
1. Terminal layout
1
16
3. Block diagram
4 5
RFOUT
RF_EQ
NRFDET
32
AMP GCA
31
30
AMP GCA
29
27 AMP GCA
28 AMP GCA
+
17
-
1-22
2. Pin function
Pin
32
Symbol I/O
No.
1 PD
2 LD
3 VCC
4 RFN
5 RFOUT
6 RFIN
7 CAGC
8 ARF
9 CBA
10 3TOUT
17
11 CBOO
12 BDO
13 COFTR
14 OFTR
6 7 8 11 12
AGC BDO
BCA
SUBT
BCA
SUBT
BCA
BCA
24 26 25
Function
I APC Amp. input terminal
O APC Amp. output terminal
- Power supply terminal
I RF adder Amp. inverting input
terminal
O RF adder Amp. output terminal
I AGC input terminal
I Input terminal for AGC loop
filter capacitor
O AGC output terminal
I Capacitor connecting terminal
for HPF-Amp.
O 3 TENV output terminal
I Capacitor connecting terminal
for envelope detection on the
darkness side
O BDO output terminal
I Capacitor connecting terminal
for envelope detection on the
light side
O OFTR output terminal
13 14
OFTR
9
3TENV
10
15
22
-
23
+
21
-
20
+
19
VDET
18
-
2
+
LD
PD
1
16 3
Pin
Function
Symbol I/O
No.
15 NRFDET O NRFDET output terminal
16 GND - Ground
17 VREF O VREF output terminal
18 VDET O VDET output terminal
19 TEBPF I VDET output terminal
20 TEOUT O TE Amp. output terminal
21 TEN I TE Amp. inverting input
terminal
22 FEN I FE Amp. inverting input
terminal
23 FEOUT O FE Amp. output terminal
24 GCTL O GCTL & APC terminal
25 FBAL O FBAL control terminal
26 TBAL O TBAL control terminal
27 E I Tracking signal input terminal 1
28 F I Tracking signal input terminal 2
29 D I Focus signal input terminal 4
30 B I Focus signal input terminal 3
31 C I Focus signal input terminal 2
32 A I Focus signal input terminal 1