Canon iR1200 Series Service Manual page 470

Chapter 15
'6' on Keypad
3-6: Press it to generate ENDURANCE, which is a black band.
To stop test printing, press the Stop key.
MODEM NCU Test (4: MODEM NCU)
Use it to execute a transmission test for MODEM NCU. In a modem test, you can make sure that the signals from
the modem are transmitted normally by listening to the sound of signals from the speaker.
You can also use it to make sure that the received tonal signal and DTMF signal are correctly detected by the modem.
To end the test, press the Stop key.
Type
Relay test
G3 signal transmission test
DTMF signal reception test
Tonal signal reception test
15-62
Check to make sure that the print
pattern is free of contraction,
elongation, dirt, or black lines.
Check it to make sure that the
print pattern is free of white
line or uneven density.
F-15-18
T-15-52
Description
Use it to turn on/off a selected relay to
execute a switch-over test.
Use it to generate the G3 signal coming from
the modem using the telephone line terminal
and the speaker.
Use it to generate the DTMF signal coming
from the modem using the telephone line
terminal and the speaker.
Use it to monitor a specific frequency and
the DTMF signal received from the
telephone line terminal by causing them to
be indicated on the LCD (i.e., the presence/
absence as detected). The reception signal is
generated by the speaker.