Field Service Ver. 4.0 Feb. 2006
5. Firmware upgrade
8. Check the message on the Control Panel and make sure that "IDLE" is displayed.
4139F2E509DA
NOTE
Do not turn the printer's Power Switch OFF or ON while the firmware is upgrading.
9. Print a Configuration Page (PRINT MENU → CONFIGURATION) and check the firm-
ware version to verify the upgrade.
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