JVC MX-GT98V Service Manual page 38

MX-GT98V/MX-GT95V/MX-GT88V
MX-GT85V/MX-G78V/MX-G75V
AN22000A-W (IC601) : Digital servo head amp.
1.Block diagram
A
+
C
-
+
B
+
D
-
+
F
-
+
E
-
+
VREF
2. Pin function
Pin No. Function
1 APC amp. input terminal
2 APC amp. output terminal
3 Power terminal
4 Inversion input terminal
for RF addition amplifier
5 RF add amp. output terminal
6 AGC input terminal
7 Capacity connecting terminal
8 AGC output terminal
9 Capacity connecting terminal
10 3TENV output terminal
1-38
RFN
4 5
RFIN
RFOUT
RF_EQ
NRFDET
A
32
AMP GCA
C
31
B
30
AMP GCA
D
29
E
27 AMP GCA
F
28
AMP GCA
+
17
-
GCTL
Pin No. Function
11 For envelope detection
12 BDO output terminal
13 For envelope detection
14 OFTR output terminal
15 NRFDET output terminal
16 Ground
for AGC loop filer 17 VRER output terminal
18 VDET output terminal
19 VDET input terminal
for HPF amplifier 20 TE amp. output terminal
21 TE amp. reverse input terminal
ARF CBDO BDO COFTR OFTR
CAGC
6 7 8 11 12
AGC BDO
BCA
SUBT
BCA
SUBT
BCA
BCA
FBAL
TBAL
24 26 25
at the dark side of RF
at the blight side of RF
13 14
OFTR
9
CEA
3TENV
10
3TOUT
15
NRFDET
FEN
22
-
23
+
FEOUT
TEN
21
-
20
+
TEBPF
19
VDET VDET
18
-
2
+
LD
PD
1
16 3
GND VCC
Pin No. Function
22 FE amp. reverse input terminal
23 FE amp. output terminal
24 GCTL & APC terminal
25 FBAL control terminal
26 TBALcontrlo terminal
27 Tracking signal input terminal 1
28 Tracking signal input terminal 2
29 Focus signal input terminal 4
30 Focus signal input terminal 2
31 Focus signal input terminal 3
32 Focus signal input terminal 1
TEOUT