Diagnostic Methods - Flashing Symtom Codes - Samsung QN55Q75CNF Service Manual

4-1-4. Diagnostic Methods - Flashing Symtom Codes

After TV is "COLD BOOTED" (AC Power Re-Cycled), Flashing symptom codes will operate and show the defect block with
number of LED flash.
Place a mirror or phone directly under Standby LED to observe flashing.
Defect Type and Number of LED Flash
„
Defect Mlock
OCB
• WDC > Reboot > Flash
Main Board
• Error > Flash
• Error > Reboot > Flash
Panel
• Error > Flash (After 10M)
• Error > Reboot > Flash
SMPS
• Error > Flash
• Cold boot > 30 sec after
Bluetooth/WIFI
module starts
• Cold boot > 30 sec after
module starts
AOC
• Signal level below threshold
How to COLD BOOT the TV
Method 1) Unplug and re-plug in the power cord
Method 2) While TV is on, Press & Hold Power Button of TV remote for 4 seconds. TV will turn off and on by itself.
• When wrong OCB is connected to TV and power consumption is different, an error message will display.
• If wrong OCB is connected to TV but power consumption is the same, an error message will not display.
Detection Method
-
<Error Message on the Screen>
Number of LED Flash
LED off
1 Time
2 Time
3 Time
4 Time
5 Time
Cold Boot
4. Troubleshooting
4-7