Canon GP160DF Service Manual page 587

h) Line signal reception test <6-9: LINE DETECT>
When 9 on the numeric key pad in the FACULTY TEST menu is pressed, the LINE
DETECT test is selected. In test menu 1, the C1, FC and external telephone's fax are
detected, and if signals are being properly detected by the NCU board, that is also
detected.
h-1) Test menu 1
When 1 on the numeric key pad in the LINE DETECT menu is pressed, the Test
menu 1 is selected. In this test the display will go from ON to OFF when C1, FC and
external telephone OFF HOOK are detected from the telephone line connection termi-
nal.
h-2) Test menu 3
When 3 on the numeric key pad in the LINE DETECT menu is pressed, test menu 3
is selected. In this test the display will go from OFF to ON when CNG is detected from
the telephone line connection terminal.
h-3) Test menu 4
When 4 on the numeric key pad in the LINE DETECT menu is pressed, test menu 4
is selected. In this test the outgoing message can be checked. By selecting 0 or 1 on the
numeric key pad, 2 types of outgoing messages are output from the telephone line and
the speaker.
i) ESS test <6-#: ESS TEST>
When the # key on the numeric key pad in the FACULTY TEST menu is pressed, the
ESS (energy saver function) test is run. Running this test puts this machine into the ESS
mode and turns off all the LEDs except for the ESS key on the operation panel. The
ESS mode is canceled by the following operations.
• When the ESS key is pressed
• When a document is set in the ADF
• When a fax arrives
• When the machine is off the hook
• When it is time to output a report
• When it becomes time to send a delayed call
CHAPTER 4 SERVICE MODE
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