Aiwa TV-A2115 service manual IC, TB1240AN Pin No Pin Name Description

IC, TB1240AN

Pin No.	Pin Name	I/O	Description
1	AFT OUT	O	The terminal for AFT output and self-adjust output.
2	A OUT	O	Audio output pin.
3	IF VCC	–	VCC of PIF circuit.
4	SIF IN	I	SIF input pin. (Not used)
5	IF GND	–	GND of PIF circuit.
6	IF IN	I	IF signal input.
7	IF IN	I	IF signal input.
8	RF AGC	O	RF AGC output.
9	IF AGC	–	The terminal to be connected with an IF AGC filter.
10	APC FIL	–	APC filter of chroma for demodulation.
11	XTAL	I	4.43MHz crystal oscillator.
12	Y/C GND	–	GND of Y/C circuit.
13	YS/YM	I	The terminal for switching of analog RGB mode and fast half tone.
14	R-IN	I	Analog red signals input.
15	G-IN	I	Analog green signals input.
16	B-IN	I	Analog blue signals input.
17	RGB VCC	–	VCC of RGB circuit.
18	R OUT	O	R signals output.
19	G OUT	O	G signals output.
20	B OUT	O	B signals output.
21	ABCL	I	ABL/ACL control.
22	V RAMP	–	Connected with cap to make Vertical RAMP signal.
23	V NFB	I	Input of Vertical sawteeth signal feedback.
24	V OUT	O	Vertical drive signal output.
25	V AGC	–	Vertical AGC cap.
26	SCL	I	I2C bus clock input.
27	SDA	I/O	I2C bus data input/output.
28	H VCC	–	VCC of vertical circuit.
29	S-ID/CW OUT	I/O	SECAM ID input and PAL/NTSC ID output.
30	FBP IN	I	FBP input.
31	SYNC OUT	O	Composites sync output.
32	H OUT	O	Horizontal drive signal output.
33	DEF GND	–	GND of deflection circuit.
34	SCP OUT	O	Sand castle pulse (VD+HD+GP) output.
35	EW OUT	O	E-W output. (Not used)
36	D VDD	–	VDD of digital block.
37	SB YIN	I	B-Y signals input.
38	SR YIN	I	R-Y signals input.
39	Y IN	I	Y signal input.
40	H AFC	–	H.AFC filter.
41	EHT IN	I	The terminal for EHT. (Not used)
42	D GND	–	GND of digital block.

– 17 –