xerox 7750fault code 09-913 help!help!

[mongol1255]

hello,come here very good for first,MCU NVM PWB of 7750 printer have some fault,can be restore？Can you help me ?

[AQBJ8]

[xeroxsharp]

Hello. You have problem with drum Y (mismatch), first try too replace it. You can reset 09-910 through 09-913 by reseting nvram. Enter diag.-hold down back and information buttons simultaneo and turn the printer ON,you continue hold down the buttons until get mesage service diagnostic initializing then release buttons, highlight NVRAM reset and press OK,highlight CLEAR TECH REP FAULTS and press OK , highlight links code 009-910 through 009-913 and press OK. Good luck to you.