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4-2-2. TV POWER ON SEQUENCE
•
55 inches_SMPS Board
Main Connector (POWER)
1
GND
2
7
A13V_PW
8
Power_On/Off
TV POWER ON SEQUENCE TEST :
1. Power TV On
9 Power_On/Off
(pin 8 ) .2Vdc (when off) changes to 3.3Vdc (on)
NOTE
•
Will stay On for short time when powered off.
2. If voltage error or no change:
Jog Function Control Test
9
3. If OK replace
Main Board
All
A13V
supplies for approx. 12.7VDC (pins 3 , 5 ,
9
See (SMPS label for approx. STBY and On voltage).
9
4. If any wrong voltages, remove SMPS connector to Main Board
All
A13V
again for 12.7VDC (pins 3 , 5 ,
9
5. If OK replace
Main Board
6. If still wrong voltage replace SMPS.
9 OD
(Over Voltage Detect) 3.3Vdc - Operating Normal.
7. If 0V or changing, an SMPS or Panel error exists. Perform Back light Test.
9 Backlight On/Off
•
If missing/error replace Main Board.
CNM801
FUSE
CNM801 (Main Connector)
ANA_DIM
3
A13V_PW
9
A13V_PW
Power
0V- Off to 5Vdc-ON
4
OD ON/OFF
10
GND
7
,
9 )
,
9 )
7
4. Troubleshooting
5
A13V_PW
6
11
GND
12
BLU_PWM
GND
4-3
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