Service manual

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1 BLK H I Blanking H sync input.
2 BLK V I Blanking V sync input.
3 A MUTE O Audio Amp mute.
4 L MUTE O Audio mute.
5 Q SUR O Q surround switch.
6 WP O EEPROM Write protect.
7 V MUTE O Video mute.
8 SEL O BPF switch.
9 MAIN SW
–
Connected to GND throuhg a resistor.
10 REMOCON I Remote control signal input.
11 SD I Pluse check.
12 EXT I I
2
C switch.
13 PON O Power switch.
14 AVCC – VCC.
15 HLF – Filter connection terminal.
16 VHOLD – Condenser connection terminal.
17 CV IN I Complex video signal input
18 VSS – GND.
19 XIN I Main Clock (8 MHz).
20 XO O Main Clock (8 MHz).
21 VSS – GND.
22 VCC – VCC.
23 OSC2 – Not used.
24 OSC1 – Not used.
25 RST I Reset input.
26 SDOUT O Not used.
27 FBT DET O FBT detection (over 2.5V).
28 REG DET I REG detection (over 2.5V).
29 AFTV I AFT voltage input.
30 KEY I Key input.
31 SDA2 I I
2
C bus CH2 data (Reg IC).
32 SDA1 I I
2
C bus CH1 data (EEPROM).
33 SCL2 I I
2
C bus CH2 data (Reg IC).
34 SCL1 I I
2
C bus CH1 data (EEPROM).
35 BBE O BBE switch.
36 VM MUTE O VM mute.
37 LED O Power LED switch.
38 NC – Not connected.
39 FAST BLK O OSD Blanking.
40 B O OSD B output.
41 G O OSD G output.
42 R O OSD R output.
Pin No. Pin Name I/O Description
IC DESCRIPTION
IC, M37272EFSP-AJD1UOTP