Troubleshooting; Previous Check - Samsung UE40H7000AL Service Manual

4. Troubleshooting

4-1. Troubleshooting

4-1-1. Previous Check

Check list for initial operation
„
AC Power Cord connected to the TV and the wall receptacle.
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Standby Power/IR Indicator LED is turned On.
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If Power/IR Indicator is not on check 10p power cable is connected and for correct Standby Voltage from SMPS to
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Main. Also check Jog Function Cable.
Power turned On with Jog Function or Remote.
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Power on command from main Board to SMPS.
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Power/IR Indicator Flashes.
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Panel Back Lights are turned On.
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If no Backlights, unplug AC Power Cord, unplug 10 pin connector to SMPS, plug in AC Power Cord, Back light
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should come on. Check Main Board operation for error.
Power/IR Indicator goes off.
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Picture or banner is displayed.
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• If nothing is displayed, check the LVDS cable.
SMPS
„
Main Ass'y
DC Output Connector (40 inches)
CNM803 : YEONHO (SMAW200-H18S5K)
PIN # Signal
1 PWM_DIM3
3 GND
5 A13
7 A13
9 A13
11 A13
13 A13
15 GND
17 N.C
Speaker
PIN # Signal
2 PWM_DIM_2
4 PWM_DIM_1
6 OD_ON/OFF
8 ON_LEVEL
10 BLU_ON/OFF
12 POWER_ON/OFF
14 GND
16 GND
18 N.C
Power Ass'y
4. Troubleshooting
4-1