KDL-22EX320, KDL-22EX325, KDL-24EX320, KDL-24EX325, KDL-26EX320, KDL-26EX321, KDL-26EX325, KDL-32CX520, KDL-32CX521, KDL-32CX523, KDL-32CX525, KDL-32EX421, KDL-32EX425, KDL-32EX520, KDL-32EX521, KDL-32EX523, KDL-32EX524, KDL-32EX525, KDL - Sony TV Service Manual (repair manual). Page 9

Read Sony KDL-22EX320 / KDL-22EX325 / KDL-24EX320 / KDL-24EX325 / KDL-26EX320 / KDL-26EX321 / KDL-26EX325 / KDL-32CX520 / KDL-32CX521 / KDL-32CX523 / KDL-32CX525 / KDL-32EX421 / KDL-32EX425 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-32EX524 / KDL-32EX525 / KDL Service Manual online

Service Procedure for Panel, Board and Software Change / Upgrade(WW)
9
[Steps for upgrading the version]
1. When you turn on the set after replacing the BAT board, the green LED and amber LED may blink (Usually if no image and sound are
generated) – this is not a problem. 
1.1. Insert USB for upgrade into the USB slot on the set while the set is turned on.
Note: Please power on by the power button of TV or remote commander within 5 seconds if TV goes to standby when inserting the 
AC plug. 
2. After inserting USB, the green LED and amber LED will blink for a while. 
2.1. The set will reset about a minute later, and then the Standby LED lights and the Communication LED blinks.
Note: After replacing the BAT board, the upgrade startup screen may not be displayed. In addition, be sure not to remove USB while 
it is writing.
3. After the writing is complete, the set is rebooted and the screen indicating the upgrade is complete is displayed. Remove USB from the set and 
press the “Enter” button while the set is turned on.
1-4. How to Upgrade the Version by Using USB
SERVICE BOARD
Page of 43
Display

Click on the first or last page to see other KDL-22EX320 / KDL-22EX325 / KDL-24EX320 / KDL-24EX325 / KDL-26EX320 / KDL-26EX321 / KDL-26EX325 / KDL-32CX520 / KDL-32CX521 / KDL-32CX523 / KDL-32CX525 / KDL-32EX421 / KDL-32EX425 / KDL-32EX520 / KDL-32EX521 / KDL-32EX523 / KDL-32EX524 / KDL-32EX525 / KDL service manuals if exist.