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 6

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Service Procedure for Panel, Board and Software Change / Upgrade(WW)
6
1. Replace the BAT board.
2. By using the USB memory, upgrade Software.
3. Confirm and specify the following from the Service menu:
a. Check and set Digital MENU 002 MODEL, 000 SEG.
*Operate [NVM Write (Mute + 0) each setting.
b. Check and set Digital MENU 002 MODEL, 001 DEST.
*Operate [NVM Write (Mute + 0) each setting.
c. Check and set Digital MENU 002 MODEL, 002 MODELNAME.
*Operate [NVM Write (Mute + 0) each setting.
d. Check and set Digital MENU 002 MODEL, 003 SERIAL.
*Operate [Decision (12/Enter/Select) after setting.
e. Set VPC MENU 000 DATA_COPY, 000 BU_TRANS.
f. Check Model_ID, Product_ID and Software Version from Digital MENU.
4. Conclude the operation.
1-1. Steps After Replacing the Service Board
Note: Before operation, disconnect all cables connected to the set.
SEC.1 SERVICE BOARD
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