Aiwa TV-F2400 Service Manual page 25

IC DESCRIPTION
IC, M37272MA-0525SP
Pin No. Pin Name
1 BLK H
2 BLK V
3 A MUTE
4 L MUTE
5 Q SUR
6 WP
7 V MUTE
8 SEL
9 MAIN SW
10 REMOCON
11 SD
12 EXT
13 PON
14 AVCC
15 HLF
16 VHOLD
17 CV IN
18 VSS
19 XIN
20 XO
21 VSS
22 VCC
23 OSC2
24 OSC1
25 RST
26 SDOUT
27 FBT DET
28 REG DET
29 AFTV
30 KEY
31 SDA2
32 SDA1
33 SCL2
34 SCL1
35 BBE
36 VM MUTE
37 LED
38 NC
39 FAST BLK
40 B
41 G
42 R
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I/O
I Blanking H sync input.
I Blanking V sync input.
O Audio Amp mute.
O Audio mute.
O Q surround switch.
O EEPROM Write protect.
O Video mute
O BPF switch.
Not used.
–
I Remote control signal input.
I Pluse check.
2
I I C switch.
O Power switch.
– VCC.
– Filter Connection Terminal.
– Condenser Connection Terminal.
I Complex video signal input
– GND.
I Main Clock (8 MHz).
O Main Clock (8 MHz).
– GND.
– VCC.
– Not used.
– Not used.
I Reset input.
O Not used.
O FBT detection (over 2.5V).
I REG detection (over 2.5V).
I AFT voltage input.
I Key input.
2
I I C bus CH2 data (Reg IC).
2
I I C bus CH1 data (EEPROM).
I I 2 C bus CH2 data (Reg IC).
I I 2 C bus CH1 data (EEPROM).
O BBE switch.
O VM mute.
O Power LED switch.
– Not connected.
O OSD Blanking.
O OSD B output.
O OSD G output.
O OSD R output.
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Description