Canon ImageCLASS MF4690 Service Manual - page 174

Chapter 14  

14-34

Test menu 2

Press numeric keypad key 2 on the LINE DETECT menu to select test menu 2.  When the CNG signal is detected on the telephone line connection terminal,

the LCD display changes from OFF to ON, indicating the received frequency.  The LCD displays the status of CML, CNG and FED detection, from left to

right, with ON/OFF indications.  Numeric keypad key 2 turns on the CML relay to detect CNG.

Test menu 3

Press numeric keypad key 3 on the LINE DETECT menu to select test menu 3.  When the CNG signal is detected on the telephone line connection terminal,

the LCD display changes from OFF to ON, indicating the received frequency.  The LCD displays the status of CML, CNG and FED detection, from left to

right, with ON/OFF indications.  Numeric keypad key 3 turns off the CML relay to detect CNG.

14.13.7 Cleaning Mode

14.13.7.1 Roller cleaning mode ((0) ROLLER CLEAN)

0016-2150

Roller cleaning mode ((0) ROLLER CLEAN)

Press numeric keypad key 0 in test mode to select roller cleaning mode.  Press numeric keypad keys 0 and 1 during this test to enter the following menus:

Numeric keypad key 1

Not used.

Numeric keypad key 2

Press the start key clean the unit transfer rollers by idling.

Press the stop key to exit this mode.