Samsung UN HU7250F Series, Руководство по обслуживанию

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4-2. How to Check Fault Symptom
4-2-1. No Power
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 24P cable
unconnected.
No
Replace 24P Power Cable.
Replace Main Power Ass'y.
Yes
1
Check ‘Stand-By 5V’.
BD213 : A5.3V
-
No
Yes
1
Check ‘Power input of Main Ass'y’ .
BD206~BD208 : B13VS
-
BD200~BD205 : B13V
-
BD228 : B5V
-
No
Yes
2
3
4
Check ‘Power IC output of Main Ass'y’.
IC210 : A3.3V
-
BD2208~BD2212 : B2.5V
-
L200 : B5V
-
BD1900, BD2206 : B3.3V
-
BD2203~BD2205 : B1.5V
-
BD2214~BD2216 : B1.12V
-
No Change the Main Ass'y.
Yes
Check Input power of ‘T-con Board’.
F1(T-CON) : PANEL_13V_PW
-
No
Reconnect or Change the LVDS
cable.
Yes
4-4
4. Troubleshooting