Description Of Major Ics - JVC UX-P55 Service Manual

4.1 AN22000A-W (IC601) : RF head amp.
• Terminal layout
• Block diagram
4 5 6 7
RFOUT
RF_EQ
NRFDET
32
AMP GCA
31
30
AMP GCA
29
27 AMP GCA
28 AMP GCA
+
17
-
24

Description of major ICs

8 11 12 13 14
AGC BDO OFTR
3TENV
BCA
-
SUBT
+
BCA
-
SUBT
BCA
+
BCA
VDET
-
+
PD
26 25 16 3
SECTION 4
• Pin function
Pin
Symbol I/O
No.
1 PD
2 LD
3 VCC
4 RFN
5 RFOUT
6 RFIN
7 CAGC
8 ARF
9 CEA
10 3TOUT
11 CBDO
9
10
12 BDO
13 COFTR
15
14 OFTR
22 15 NRFDET O NRFDET output terminal
16 GND
23
17 VREF
18 VDET
19 TEBPF
21
20 TEOUT
20 21 TEN
22 FEN
23 FEOUT
24 GCTL
19
25 FBAL
26 TBAL
18
27 E
28 F
29 D
30 B
2
31 C
LD
32 A
1
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
- Ground
O VREF output terminal
O VDET output terminal
I VDET output terminal
O TE Amp. output terminal
I TE Amp. inverting input terminal
I FE Amp. inverting input terminal
O FE Amp. output terminal
O GCTL & APC terminal
O FBAL control terminal
O TBAL control terminal
I Tracking signal input terminal 1
I Tracking signal input terminal 2
I Focus signal input terminal 4
I Focus signal input terminal 3
I Focus signal input terminal 2
I Focus signal input terminal 1
(No.22036)1-25