Sunday, October 21, 2012

SONY LCD - KDL-22 EX320 _ KDL-24 EX320_ KDL-26 EX320_ KDL-32 EX320_ KDL-40 EX320_ KDL-46 EX320_ KDL-55 EX320 _Troubleshooting Chart



                                                           [1]

APPLICABLE TO ALL {KDL-** EX*** MODELS}

FLOW CHART


Flow chart

Start


Does the power LED stay ON, when TV is switched ON?

No
See No Power
Yes



Is the standby LED blink?
Yes
See standby LED blink.

No


See No picture / No sound.
Is picture and sound OK?
No
See No picture / No sound

Yes



Do the buttons on the TV & Remote control work properly?

No
See TV / Commander button malfunction.
Yes



Is network connection OK?
No
See Can’t connect network.

Yes



Is the skype function OK?
No
See Skype malfunction.

Yes



Is the HDD Rec function OK?
No
See HDD Rec malfunction.


Yes



End



NO POWER



No power



Check STBY 3.3V at pin 10 of CN6001 on G* Board.

Not good
Replace between G* Board to B* board Harness.
Not good
G* Board
Ok

Ok.



B* Board.

Harness .






STANDBY LED BLINKS



2 Tmes blinking



Check REG12V at pins 2/3 of CN6001 on B* Board.

12V not good
Replace between G* board to B* board Harness.
Not good
G* Board.
12V OK


Ok


B* Board

Harness.









3 times blinking


Check D+1.2V at pin 14 of IC6005 on B* Board.

Not good
F6001, IC6005 [B* Board].
Ok



Check +3.3V MAIN at pins 9/10 of CN9003 on the B* Board.

Not good
F6003, IC6003 etc [B* Board]
Ok



Check speaker impedance at SP connector.

Not good
Speaker
Ok



Check AUDIO +12.5V, at pin 8/9 of CN6001 on the B* Board.

Not good
G* Board.
Ok



Check +12.5V at F4601 on the B* Board.

Not good
F4601, IC4601, etc. [B* Board]
Ok



IC4601, etc

FF/BE communication.





5-time blinking


Check PANEL_VCC at pin 1 of CN6001 on the B* Board.
Not good
G* Board.
Ok. (about 5v: 22” model and about 12V; ex.22” model)



Replace the Harness between G* and panel.  (exclude 60Hz panel model)

Symptom improvement.
Harness
Not good



Replace the LVDS harness.
Symptom improvement.
LVDS harness.

Not good



RGB sensor Change.
Symptom improvement
RGB Sensor. {Only for ‘Y’ models)

Panel 9T-Con) change
Not good
B*board.

Symptom improvement



Panel (T-Con)



Contd:


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