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GUIDE FOR REPAIRING
AV PCB OEC6073A (IC101)
No.
Symbol
1
VSS
2
TV/DVD
3
PROTECT
4
TV MUTE
5
DVD POWER
6
DVD RESET
7
TV POWER
8
DEGAUSS
9
UART CLOCK
10 UART START BIT
11 RX
12 TX
13 UART CLOCK IN
14 H CONTROL
15 X-RAY IN
16 AFT
17 KEY1
18 KEY2
19 AV2
20 AV1
21 IIC BUS OFF
22 OSD R
23 OSD G
24 OSD B
25 OSD Y/BLK
26 Hsync
27 Vsync
28 OVDD
29 OVCC
30 TEST
31 XIN
32 XOUT
33 RESET
34 POWER FAIL
35 REMOCON
36 SD
37 SCL
38 SDA
39 VSS
40 VIDEO IN 1
41 VIDEO IN 2
42 VDD
IC DESCRIPTION
I/O
Logic
-
-
Negative power supply (Ground)
Output
1
TV/DVD picture signal changing output
Output terminal for protect from high-voltage remaining
Output
1
Output
1
Volume muting output
Output
1
DVD power control output
Output
0
Enforced reset output for DVD
Output
1
Power control output
Output
1
Degauss output
Output
1
The asynchronous clock output
Input
1
The entry for the asynchronous Start bit detection
Input
-
The communication DATA entry from the side of DVD
Output
-
The communication DATA output to the side of DVD
Input
-
The asynchronous clock Input
Output
1
Output terminal for Horizontality Control
Input
-
X-RAY detection input (nom. 0V)
Input
1
Voltage of tuning input
Input
0
Voltage of the TV button input
Input
0
Voltage of the TV button input
Output
1
TV/DVD picture signal changing output
Output
1
TV/DVD picture signal changing output
Input
0
Serial clock/data stop input
Output
1
Red output of RGB image output
Output
1
Green output of RGB image output
Output
1
Blue output of RGB image output
Output
1
Fast blanking control signal
Input
0
Horizontal synchronization input
Input
0
Vertical synchronization input
-
-
Positive power supply (+5V nom.)
-
-
Negative power supply (Ground)
Input
-
Test input (connects with Ground)
Input
-
Connect the main crystal.
Output
-
Connect the main crystal.
Input
0
System reset voltage input
Input
0
Power failure detection input
Input
0
Remote control input
Input
0
Synchronization detector input
Output
-
Serial clock output
In/Output
-
Serial data Input/output
-
-
Negative power supply (Ground)
Input
-
Picture signal input for the Closed Caption (2Vp-p)
Input
-
Picture signal input for the Closed Caption (2Vp-p)
-
-
Positive power supply (+5V nom.)
No. 52133
Function
AV-20FD24
25
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