Canon imageCLASS MF5600 Series Service Manual - page 247
Chapter 5
5-53
5.6.6.5.4
Line signal reception test
0007-2923
The line signal reception test menu is selected by pressing the 9 key from the faculty test menu. This test checks the
operation of the NCU signal sensor and frequency counter. In Menu 1 the CI status can be detected and in Menu 3
the frequency can be detectet.
Test Menu 1
Test Menu 1 is selected by pressing the 1 key from the Line Detect menu. When CI is detected from the
modular jack, the display changes from OFF to ON and the received frequency is displayed. The on-hook/
off-hook state of the handset and the external telephone is also displayed.
Test Menu 2
Test Menu 2 is selected by pressing the 2 key from the Line Detect menu. When CNG is detected from the
modular jack, the display changes from OFF to ON.
Test Menu 3
Test Menu 3 is selected by pressing the 3 key from the Line Detect menu. When CNG is detected from the
modular jack, the display changes from OFF to ON.