Frequency Test (Freq) - Canon imageRUNNER iR2270 Service Manual

Sssw Menu Num Ncu Type ISDN
<MODEM> <RELAY-1>
CML OFF
P
OFF
S
OFF
H
OFF
D
OFF
R
OFF
F-4-15
<Using Text Mode>
1) From the relays indicated on the screen, select the one you want to test; then, turn it off
or on using the Up/Down key. (Some of the relays may not actually exist on the NCU
board.)

4.9.2.2 Frequency Test (FREQ)

Of the items indicated below, press one; in response, the DC circuit will be closed and the
selected frequency will be transmitted using the tone transmission function of the modem.
You can also monitor the transmission signal by listening to the sound generated by the
speaker. To stop the operation and end test mode, press the
Print Clear Test
<READY>
<1/1>
OK
Chapter 4
Report
0008-0474
key.
4-39