Canon iR1020 Series Service Manual page 272

Chapter 16
The touch panel (LCD) is turned on or off in relation to the transmission of the relay operation signal as is operated on the keypad; for this reason, you cannot use
the touch panel (LCD) to check a fault on a single relay.
Frequency Test
A press on '2' on the keypad from the MODEM test menu selects the frequency test.
In this test, signals of the following frequencies from the modem are transmitted using the telephone line terminal and the speaker. To select a different frequency,
use the keypad.
MEMO:
The frequency and the output level of individual frequencies are in keeping with the output level set in service mode.
G3 Signal Transmission Test
A press on '4' on the keypad from the MODEM test menu selects the G3 signal transmission test. In this test, the following G3 signals from the modem are trans-
mitted using the telephone line terminal and the speaker. To select a different transmission speed, use the keypad.
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.
16-42
Keypad Frequency
0 462Hz
1 1100Hz
2 1300Hz
3 1500Hz
4 1650Hz
5 1850Hz
6 2100Hz
Keypad Transmission speed
0 300bps
1 2400bps
2 4800bps
3 7200bps
4 9600bps
5 TC7200bps
6 TC9600bps
7 12000bps
8 14400bps
Tonal signal reception test
MODEM TEST
OFF OFF OFF
OFF OFF OFF
changes from '0' to '1' in response to detection of a signal of 462
changes from '0' to '1' in response to detection of a signal of 1100
changes from '0' to '1' in response to detection of a signal of 2100
DTMF signal reception test
MODEM TEST
OFF OFF OFF 5
The received DTMF signals are indicated starting
from the right using the 2nd character of the display.
F-16-16
25 Hz.
30 Hz.
25 Hz.