Phaser 6121MFP Service Manual 6-43
Adjustments and Calibrations
Maintenance Mode
Maintenance Mode Entry Procedure
The Maintenance Mode offers a shortcut to accessing the Service Mode 
functionality found in the Service’s Choice and Adjustment submenus.
For a description of the Fax Maintenance menu items found in the Service Mode 
Service’s Choice menu, see page 6-9.
For a description of the Adjustment menu items found in the Service Mode 
Adjustment menu, see page 6-14.
Ensure appropriate security for the Maintenance Mode entry procedure. 
NEVER give it to any unauthorized person.
Procedure
1. On the initial screen, press the Menu button, and then press and hold down 
the Left Arrow key (for at least 2 seconds).
2. The window displays the following:
Maintenance
FAX Maintenance
Adjustment
3. Press the Down Arrow button to locate all command lines in the displayed 
function tree.
Exiting
Press Stop to exit Maintenance Mode.