Canon iR1600 Series Service Manual page 537

Line Signal Reception Test (6-9: LINE DETECT)
A press on '9' on the keypad in the FACULTY TEST menu selects the LINE DETECT
test. Use test menu 1 to check the state of the external telephone, C1, and FC or to find
out whether signals are correctly detected in NCU packages.
• Test Menu 1
A press on '1' on the keypad in the LINE DETECT menu selects test menu 1, in which
the indication on the display will change from 'OFF' to 'ON' when the eternal telephone
is identified as being in off-hook state. It also checks C1 and FC from the telephone line
terminal.
• Test Menu 3
A press on '3' on the keypad in the LINE DETECT menu selects test menu 3, in which
the indication on the display changes from 'OFF' to 'ON' when CNG is detected from the
telephone line terminal.
• Test Menu 4
A press on '4' on the keypad in the LINE DETECT menu selects test menu 4, in which
the operation of the answering message may be checked. A press on '0' or '1' on keypad
will send 2 types of answering messages to the telephone line and the speaker.
ESS test (6-#: ESS TEST)
A press on the # key in the FACULTY TEST executes the ESS (power save mode) test
so that the machine will enter ESS mode, turning off all but the ESS key in the control
panel. ESS mode may be turned off when the following takes place:
• The ESS key is pressed.
• An original is set in the ADF.
• A fax message arrives.
• The machine goes off-hook.
• The report output time arrives.
• The timer ring time arrives.
COPYRIGHT© 2002 CANON INC. 2000 CANON iR1600/iR2000/iR1610/iR2010 SERIES REV.0 MAR. 2002
CHAPTER 13 TROUBLESHOOTING
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