hello everyone.....i'm working on toshiba 5540c with error c381 .....I change the black developer, auto toner sensor, do 05-2404, 03-114, 03-115, 05-2788, check all the connector etc......all lock good the machine turn on print like 45 pages good and then the machine reboot by himself and when you try a new copy a error c381 going back......somebody before me, i don't know why change the hard drive on that machine so i believe it is something wrong with the firmware.......please any help....i don't have the firmware i'm a kyocera man...thanks...
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