Samsung QRQ60T - Page 63

75 / 82 inches
CNM802
Main Connector (POWER)
CNM802 (MAIN Connector)
1 GND 2 ANA-DIM 3 A13V 4 OD_ON/OFF 5 A13V 6 PWM_BLU
7 A13V 8 POWER_ON 9 A13V 10 GND 11 GND 12 GND
Power Backlight
TV POWER ON SEQUENCE TEST :
Power TV On1.
Power_On/O / POWER_ON 9 (pin
8
) .2Vdc3.3Vdc (on)
NOTE

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 (pins
3
,
5
,
7
,
9
)
If any wrong voltages, remove SMPS connector to Main Board4.
All 9 A13V again for 12.7VDC (pins
3
,
5
,
7
,
9
)
If OK replace 5. Main Board
If still wrong voltage replace SMPS6.
OD_ON/OFF 9 (Over Voltage Detect) (pin
4
) 3.3Vdc : Operating Normal
If 0V or changing, an SMPS or Panel error exists. Perform Backlight Test.7.
BLU_PWM / PWM_BLU 9 (pin
6
) 1Vdc – 3.3 Vdc depending on backlight
dimming level for video.
If missing or error : Replace  Main Board.
4-7
4. Troubleshooting