Led Indicator Test - Samsung UN65NU6900F Service Manual

4. Troubleshooting

4-10. LED Indicator Test

4-10-1. Diagnostic Methods -
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
Block
OCB -
• WDC -> Reboot -> Flash
Main Board
• Error -> Flash
• Error -> Reboot -> Flash
Panel
• Error -> Flash(after 10cm)
• Error ->Reboot -> Flash
SMPS
• Error -> Flash
Bluetooth / • Cold Boot -> 30 sec after
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.
4-44
Flashing
Detection Method
Symptom Codes
Number of LED Flash
No Blinking
LED off
Blinks 1 time when cold boot
1 time
1 set 4 sec
2 time
4 sec(10min)
3 time
4 sec
4 time
20~30sec
4 sec(30sec)
5 time
Cold Boot
4 se
x 5 time
4 se
x 5 time
4 se
x 5 time
4 se
x 5 time
4 se
x 5 time