Panasonic KX-P8420 Operating Guide

When an error interferes with printing, you will see a message on the front 
panel. The following table lists the messages in alphabetical order, with the 
appropriate corrective action for each one.

•

If the message indicates that you don’t have enough memory to finish 
printing, you may need to install additional memory to handle your 
workload. See “Installing additional memory” on 

The following status messages cause the Ready indicator to blink. Printing 
will continue when corrective action (if required) is taken, and the Ready 
indicator is lit.

%s%s.%s Error 

DIMM Slot %s

Cycle Power. If printer does not function 
normally, call for service.

Black Toner Cartridge 

Not installed

Install black toner cartridge.

Black Toner

Empty

Replace black toner.

Canceling Job

When the Cancel/Left button is pressed, the 
job currently being processed is deleted.

Cannot recover from JAM

Press Enter

Semi Automatic duplex is aborted by jam.

Charger 

Not installed

Install the charger unit.

Controller Memory Error

Cycle Power

Cycle Power. If printer does not function 
normally, call for service.

Cyan Toner Cartridge 

Not installed

Install cyan toner cartridge.

Cyan Toner

Empty

Replace cyan toner.

DC Controller 

Malfunction

Cycle Power. If the printer does not function 
normally, call for service.

Disk File

Operation Failed

Hard disk is functioning abnormally. Cycle 
Power. If printer does not function normally, 
call for service.