Aiwa TV-SA2155 Service Manual page 23

Colour television
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IC, TB1240AN
Pin No.
Pin Name
1
AFT OUT
2
A OUT
3
IF VCC
4
SIF IN
5
IF GND
6
IF IN
7
IF IN
8
RF AGC
9
IF AGC
10
APC FIL
11
XTAL
12
Y/C GND
13
YS/YM
14
R-IN
15
G-IN
16
B-IN
17
RGB VCC
18
R OUT
19
G OUT
20
B OUT
21
ABCL
22
V RAMP
23
V NFB
24
V OUT
25
V AGC
26
SCL
27
SDA
28
H VCC
29
S-ID/CW OUT
30
FBP IN
31
SYNC OUT
32
H OUT
33
DEF GND
34
SCP OUT
35
EW OUT
36
D VDD
37
SB YIN
38
SR YIN
39
Y IN
40
H AFC
41
EHT IN
42
D GND
I/O
O
The terminal for AFT output and self-adjust output.
O
Audio output pin. (Not used)
VCC of PIF circuit.
I
SIF input pin.
GND of PIF circuit.
I
IF signal input.
I
IF signal input.
O
RF AGC output.
The terminal to be connected with an IF AGC filter.
APC filter of chroma for demodulation.
I
4.43MHz crystal oscillator.
GND of Y/C circuit.
I
The terminal for switching of analog RGB mode and fast half tone.
I
Analog red signals input.
I
Analog green signals input.
I
Analog blue signals input.
VCC of RGB circuit.
O
R signals output.
O
G signals output.
O
B signals output.
I
ABL/ACL control.
Connected with cap to make Vertical RAMP signal.
I
Input of Vertical sawteeth signal feedback.
O
Vertical drive signal output.
Vertical AGC cap.
2
I
I
C bus clock input.
2
I/O
I
C bus data input/output.
VCC of vertical circuit.
I/O
SECAM ID input and PAL/NTSC ID output.
I
FBP input.
O
Composites sync output.
O
Horizontal drive signal output.
GND of deflection circuit.
O
Sand castle pulse (VD+HD+GP) output.
O
E-W output. (Not used)
VDD of digital block.
I
B-Y signals input.
I
R-Y signals input.
I
Y signal input.
H.AFC filter.
I
The terminal for EHT. (Not used)
GND of digital block.
– 23 –
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