Canon imageRunner 2022, Service Manual

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Chapter 15
15-54
MEMO:
The output level of individual signals is in keeping with the setting made in service mode.
DTMF Signal Transmission Test
A press on '5' on the MODEM test menu selects the DTMF signal transmission test. In the test, the following DTMF signals from the modem are transmitted using
the telephone line terminal and the speaker. The number pressed on the keypad selects a specific DTMF signal.
MEMO:
The output level of individual signals is in keeping with the setting made in service mode.
Tonal/DTMF Signal Reception Test
A press on '6' on the keypad from the MODEM test menu selects the tonal signal/DTMF signal reception 0 test. In this signal, the tonal signal/DTMF signal received
from the telephone line terminal can be checked to find out if it was detected by the modem.
F-15-21
V.34 G3 Signal Transmission Test
A press on '8' on the keypad from the MODEM test menu selectes the V.34 G3 signal transmission test. The V.34 G3 signals below are sent from the modem using
the modular jack and the speaker by pressing the start key. The Baud rate can be changed with the keypad, and the Speed can be changed with the left/right arrow
key.
Keypad Baud rate
0 3429baud
1 3200baud
2 3000baud
3 2800baud
4 2743baud
5 2400baud
Left/right arrow key Transmission speed
2400bps
4800bps
7200bps
9600bps
< 12000bps
14400bps
16800bps
19200bps
21600bps
> 24000bps
26400bps
28800bps
31200bps
33600bps
MODEM TEST
OFF OFF OFF
OFF OFF OFF
changes from '0' to '1' in response to detection of a signal of 462 25 Hz.
changes from '0' to '1' in response to detection of a signal of 1100 30 Hz.
changes from '0' to '1' in response to detection of a signal of 2100 25 Hz.
Tonal signal reception test
MODEM TEST
OFF OFF OFF 5
DTMF signal reception test
The received DTMF signals are indicated starting
from the right using the 2nd character of the display.