Samsung UN FH6200F Series, Service Manual, Page: 28 / 74

4-2. How to Check Fault Symptom
4-2-1. NO Power
Note
Refer to the next page to check the location such a CN201 or IC201 SVC Manual mentioned.
Symptom
The LEDs on The front panel do not work when connecting The power cord. •
The SMPS relay does not work when connecting The power cord. •
The units appears to be dead. •
Major
checkpoints
The IP relay or the LEDs on the front panel does not work when connecting the power cord if the
cables are improperly connected or the Main Board or SMPS is not functioning. In this case, check
the following:
Check the internal cable connection status inside the unit. •
Check the fuses of each part. •
Check the output voltage of SMPS. •
Replace the Main Board. •
Diagnostics
Power indicator LED is on? No Check a connetion power code.
Yes
Check the backlight on, when 20p cable
unconnected ?
No
Change 20p cable.
Change Main Power Ass’y.
Yes
Check ‘Stand-By 5V’ ?
BD203 : A5V
No
Yes
Check ‘Power input of Main Ass’y’ ?
BD206 : B18VS
BD207/208/209 : B13V
BD201 : B5V
No
Yes
Check ‘Power IC output of Main Ass’y’ ?
L202 : B3.3V / L203 : B1.2V
L204 : B1.1V / L201 : B1.5V
IC203 : 3.3V / IC208 : 3.3V
No Change the Main Ass’y.
Yes
Check Input power of ‘T-CON Board’ ?
F11(T-CON) : B13V
No
Reconnect or Change.
the LVDS cable.
Yes
Check Power of ‘T-CON Board’ ?
L9(T-CON) : VCC12
TP_VCC33 : VCC33
No Change the T-CON Board.
Yes
4-4
4. Troubleshooting