82 inches
•
CNM803
Main Connector (POWER)
CNM803 (MAIN Connector)
1
GND
2
GND
3
GND
4
1-wire PWM
5
A13V
6
GND
7
A13V
8
OVD LEVEL
9
FAIL DETECT
10
ANA-DIM
11
A13V
12
OD ON/OFF
13
A13V
14
BLU_ON/OFF
15
A13V
16
Power ON/OFF
17
A13V
18
GND
19
GND
20
GND
Backlight
Power
Power TV On
1.
POWER ON
9
.2Vdc
(when off) changes to
3.3Vdc
(on)
NOTE
Will stay On for short time when powered off.
•
If voltage error or no change:
2.
Jog Function Control Test
9
If OK replace
3.
Main Board
All
9
A13V
supplies for approx.
12.7VDC
See (SMPS label for approx. STBY and On voltage)
9
If any wrong voltages, remove SMPS connector to Main Board
4.
All
9
A13V
again for
12.7VDC
If OK replace
5.
Main Board
If still wrong voltage replace
6.
SMPS
OVD_LEVEL
9
(Over Voltage Detect) 3.3Vdc : Operating Normal
If 0V or changing, an SMPS or Panel error exists. Perform Backlight Test.
7.
Backlight On/Off :
9
0V : Off
to
4.4Vdc : ON
If missing or error - Replace
•
Main Board
.
4-9
4. Troubleshooting