Phaser 6121MFP Service Manual 6-5
Adjustments and Calibrations
Service Mode Menu
The table below lists the menu options available from the Service mode menu. The 
table contains notations that have the following meanings:
• <*1>: Displayed on Phaser 6121MFP/N/D.
• <*2>: If the printer is a 220V model, this menu item doesn’t display.
• <*3>: Displayed only when the lower feeder unit is installed.
Service Mode Menu 
Service Mode Parameter Go to
Services’s Choice Send (TX) Speed <*1> page 6-9
Rcv (RX) Speed <*1> page 6-9
Send (TX) Level <*1> page 6-9
Rcv (RX) Level <*1> page 6-10
DTMF Level <*1> page 6-10
CNG Level <*1> page 6-10
CED Level <*1> page 6-10
ECM Mode <*1> page 6-11
Coding Scheme <*1> page 6-11
Toner Empty Report <*1> page 6-11
Protocol Report <*1> page 6-12
GDI Time-out page 6-12
Twain Time-out page 6-13
Power Saver Mode <*2> page 6-13
Enable Warning Toner Low page 6-13
Imaging Unit Low