Samsung UN HU7250F Series, Руководство по обслуживанию

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4. Troubleshooting
4-1. Troubleshooting
4-1-1. Previous Check
Check the various cable connections first. 1.
Check to see if there is a burnt or damaged cable. -
Check to see if there is a disconnected or loose cable connection. -
Check to see if the cables are connected according to the connection diagram. -
Check the power input to the Main Board. 2.
ASSY BOARD P-RF-MODULE NETWORK-WIFI MODULE
ASSY PCB MAIN
ASSY T CON P
ASSY BOARD
P-SWITCH FUNCTION
ASSY BOARD P-HU7200 IR
LVDS Cable
DC VSS-UHD PD BD
ASSY DECORATION SMT
ASSY SPEAKER P (R/L)
How to distinguish if the problem is caused by 3. Main Board or T CON
No Video
-
If the problem is No Video but BLU is on and Indication LED is blinking repeatedly and faster than nomal booting,
replace the T-CON board.
Distorted Picture
-
Check the inner patterns.
For All mode •
NT14U NT72323BG FRC Picture Problem
OK OK NG Main Board or Signal Source
NG OK NG Main Board
NG NG NG Main Board or LVDS cable or T CON or Panel
Only for HDMI mode (additional check) •
HDMI Picture Problem
OK NG There is no problems after HDMI IC check HDMI source or HDMI jack.
NG NG There is no problems before HDMI IC check X12+ pattern or LVDS cable or T CON
4-1
4. Troubleshooting