Konica Minolta Fax 9930 - Manual (Page 214)

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User’s Manual 199
INVALID TONER CART.
REFER TO USER GUIDE
This error will occur if an incorrect toner cartridge is
installed. This machine will only operate using toner
cartridges specified by Konica for use in this machine. If
you are using the correct toner cartridge, open and close the
cover. If this does not clear the message, turn off the machine
and contact the nearest authorized Konica dealer for service.
INVALID DRUM CART.
REFER TO USER GUIDE
This error will occur if an incorrect image drum cartridge is
installed. This machine will only operate using image drum
cartridges specified by Konica for use in this machine. If
you are using the correct drum cartridge, open and close the
cover. If this does not clear the message, turn off the machine
and contact the nearest authorized Konica dealer for service.