Aiwa HV-FX7800 Service Manual page 45

IC DESCRIPTION -1/4 (HD6432197A37FX) <HV-FX7800> -1/3
Pin No. Pin Name
1 SVss
2 CTLref
3 CTL(+)
4 CTL(–)
5 CTL BIAS
6 CTL FB
7 CTL AMP (O)
8 CTL AMP (I)
9 CFG
10 SVcc
11 AFCpc
12 AFCosc
13 AFCLPF
14 C_SYNC
15 VLPF/VSYNC
16 Cvin2
17 Cvin1
18 OSD Vcc
19 CVout
20 OSD_VSS
21 4FSC OUT
22 4FSC IN
23 AVss
24 V.ENV
25 A.ENV
26 PG ADJ
27 AFT
28 KEY0
29 KEY1
30 CST SW
31 A. LEVEL (L)
32 A. LEVEL (R)
33 SECAM DET 'H'
34 C+ DETECT
35 NOT USED
36 A/D Vcc
37 P.FAIL
38 PWR KEY
39 CSYNC_IN
40 A.MUTE 'H'
41 S2V.IN 'H'
42 SE/MESECAM 'H'
I/O
– Servo Block GND
O CTL amp reference
I/O PB CTL in/REC CTL out (+)
I/O PB CTL in/REC CTL out (-)
I CTL amp bias voltage
I CTL feedback SW control
O CTL amp output
I CTL Schmitt amp input
I CFG input
– Servo VCC (+5V)
I SYNC SEPER. 'C' connect
I SYNC SEPER. AFC osc
I SYNC SEPER. LPF connect
I SYNC SEPER. for SERVO
– Not connected
I NTSC CAPTION DATA VIDEO
I OSD VIDEO SIGNAL
– OSD VCC (+5V)
O Video signal output
I OSD Block GND
– SUB-CARRIER OSC.
I SUB-CARRIER OSC.
– A/D Block GND
I Video envelope input
I Audio envelope input
I PG adjustment
I Tuner AFT in
I Key Return 0. Pannel key.
I Key Return 1. Pannel key.
I CST/SW REC tab check
I Level meter L-ch
I Level meter R-ch
I SECAM detect 'H' (SECAM signal check)
I C+ detect/av 2 state del.
– Not used
– A/D Block VCC 5 V
I Power failure detect
I 2 W wake up power key
I SYNC detect for CH tuning
O Audio mute 'H'
O Check canal in 2 W
O OSD control in SECAM/MESECAM
Description
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