Specifications
264 Using the Control Panel
The developer unit for the indicated color is near the end of its 
service life. The letters C, M, Y, or K appear in place of uuuu and 
indicate the colors Cyan, Magenta, Yellow, and Black 
respectively. Contact your dealer.
Write Error ROM A/Write Error ROM P
This message indicates an internal error in the printer. Reset the 
printer. If this error persists, consult your dealer.
Writing ROM A/Writing ROM P
This message indicates that a ROM module in the slot is being 
written. Please wait until this message disappears.
Wrong Photoconductor
An inappropriate photoconductor unit is installed. Install only 
the photoconductor unit listed in "Consumable products" on page 
31.
See "Photoconductor Unit" on page 318 for instructions on 
replacing the photoconductor unit.
Wrong Toner uuuu
An inappropriate toner cartridge is installed. Install only the toner 
cartridge listed in "Consumable products" on page 31.
See "Toner Cartridge" on page 312 for instructions on replacing 
the Toner cartridge. (The letters C, M, Y, or K appear in place of 
uuuu and indicate the colors Cyan, Magenta, Yellow, and Black 
respectively.)
Printing and Deleting Reserve Job Data
New :Using HDD is available/ use caution with the icon or button
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