You might need to go to the NVRAM reset then.
NVRAM Reset a CP3525:
http://www.fixyourownprinter.com/forums/laser/73873
NVRAM Reset 4700:
http://h30499.www3.hp.com/hpeb/attachments/hpeb/bsc-413/178461/1/342105.pdf
You might need to go to the NVRAM reset then.
NVRAM Reset a CP3525:
http://www.fixyourownprinter.com/forums/laser/73873
NVRAM Reset 4700:
http://h30499.www3.hp.com/hpeb/attachments/hpeb/bsc-413/178461/1/342105.pdf