SONY LCD - KDL-22 EX320 _ KDL-24 EX320_ KDL-26 EX320_ KDL-32 EX320_ KDL-40 EX320_ KDL-46 EX320_ KDL-55 EX320_TROUBLESHOOTING
APPLICABLE TO ALL {KDL-** EX*** MODELS}
FLOW CHART
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Flow chart
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Start
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Does the power LED stay ON, when TV is switched ON?
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No
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See No Power
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Yes
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Is the standby LED blink?
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Yes
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See standby LED blink.
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No
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See No picture / No sound.
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Is picture and sound OK?
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No
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See No picture / No sound
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Yes
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Do the buttons on the TV & Remote control work
properly?
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No
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See TV / Commander button malfunction.
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Yes
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Is network connection OK?
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No
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See Can’t connect network.
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Yes
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Is the skype function OK?
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No
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See Skype malfunction.
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Yes
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Is the HDD Rec function OK?
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No
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See HDD Rec malfunction.
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Yes
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End
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NO POWER
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No power
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Check STBY 3.3V at pin 10 of CN6001 on G* Board.
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Not good
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Replace between G* Board to B* board Harness.
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Not good
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G* Board
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Ok
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Ok.
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B* Board.
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Harness .
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STANDBY LED BLINKS
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2 Tmes blinking
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Check REG12V at pins 2/3 of CN6001 on B* Board.
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12V not good
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Replace between G* board to B* board Harness.
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Not good
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G* Board.
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12V OK
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Ok
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B* Board
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Harness.
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3 times blinking
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Check D+1.2V at pin 14 of IC6005 on B* Board.
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Not good
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F6001, IC6005 [B* Board].
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Ok
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Check +3.3V MAIN at pins 9/10 of CN9003 on the B* Board.
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Not good
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F6003, IC6003 etc [B* Board]
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Ok
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Check speaker impedance at SP connector.
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Not good
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Speaker
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Ok
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Check AUDIO +12.5V, at pin 8/9 of CN6001 on the B* Board.
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Not good
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G* Board.
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Ok
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Check +12.5V at F4601 on the B* Board.
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Not good
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F4601, IC4601, etc. [B* Board]
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Ok
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IC4601, etc
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FF/BE communication.
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5-time blinking
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Check PANEL_VCC at pin 1 of CN6001 on the B* Board.
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Not good
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G* Board.
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Ok. (about 5v: 22” model and about 12V; ex.22” model)
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Replace the Harness between G* and panel. (exclude 60Hz panel model)
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Symptom improvement.
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Harness
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Not good
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Replace the LVDS harness.
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Symptom improvement.
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LVDS harness.
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Not good
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RGB sensor Change.
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Symptom improvement
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RGB Sensor. {Only for ‘Y’ models)
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Panel 9T-Con) change
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Not good
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B*board.
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Symptom improvement
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Panel (T-Con)
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6-time blinking
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Check BL_ERR at
pin 7 of CN6002 on the B* Board.
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Under 2.65V
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B* Board.
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Over 2.65V
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Change G* Board.
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Symptom improvement.
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G* Board.
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Not good
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Panel
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6-times blinking
[Temperature]
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Setting circumstance is OK? Temperature, Ventilation, etc?
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No
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Set to an other location.
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Yes
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Change B* Board and aging a few hours.
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No
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Panel.
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Ok
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B* Board.
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8-times blinking
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If the symptom improved by changing the WIFI module.
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No
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B* Board.
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Yes
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WIFI Module.
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No picture
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Press Home key XMB {Menu} displayed?
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No
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PANEL_VCC at pin 1 on CN6001 B* Board.
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Yes
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Check BL_ON at pin 6 of CN6002 on the B* Board
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BL_ON: H
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Replace the LVDS Harness.
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Not good
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LCD panel 9T-Con)
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Yes
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No
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BL_ON:L
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Ok
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B* board
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G* Board.
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Replace Harness between G* Board to B* Board.
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Not good. (harness (G* to B*)
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Harness (LVDS)
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Ok
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Change B* Board.
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Not good
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G board.
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Ok
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B* board.
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No sound
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Check the speaker Setting.
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Audio system
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Change to TV speaker.
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Check speaker Harness
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Not good
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Replace the B* Board.
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Ok
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B* board.
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Ok
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Not good
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Speaker harness
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Speaker
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Button malfinction on TV
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Replace the harness between B* to Switch Unit
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Ok
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Switch Unit change.
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Ok
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Switch unit
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Not good
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Not good
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Harness
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B*Board.
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TV isn’t controlled by remote commander
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Green LED light at power indicator.
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Ok
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Green LED blinks at power indicator when using commander
near sensor’s window.
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Ok
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Mechanical (eg: bezel)
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Not good
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Not good
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Check the harness between the B* Board and the HLR board.
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Ok
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Sensor is broken.
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Not good
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Exchange the harness
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Ok
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Harness.
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Not good
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Exchange the HLR Board.
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Ok
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HLR board.
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Not good
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B* Board.
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Wired network on the TV
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Connection result Cable Connection.
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Not good
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Check the Ethernet Cable
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Not good
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Ethernet cable.
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Ok
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Ok
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B* board
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Connection result Local access
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Not good
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Wired Set-Up IP address setting.
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Auto
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Check Local router DHCP server.
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Ok
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Manual
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Check IP address and Local router setting.
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Connection result Internet access.
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Not good
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Proxy setting.
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Wireless network on the TV
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Error Message appears when the Wireless Network is
connected?
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USB Dongle.
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No
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Is the radio field strength too weak or even No Signal?
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Yes
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Access Point.
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No
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B* Board
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Wireless network on the TV
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Error message appear when the Wireless Network is
selected?
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Yes
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Wireless Module. Harness.
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No
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Is radio field Strength too weak or even no Signal?
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Yes
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Access point.
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No
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B* Board.
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HDD Rec malfunction
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HDD is connected to the appropriate USB port?
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No
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Connect to appropriate port.
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Yes
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USB Hub is inserter in between the USB port and HDD?
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No
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Is the drive size larger than 32GB and Smaller than 2TB??
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No
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Only 32GB ~ 2TB is supported.
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Yes
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Yes
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USB hub is not supported.
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All the setups and restrictions listed in iManual are
cleared?
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No
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Check the iManual.
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Yes
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B Board
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