7Modem, Ncu Tests; Modem, Ncu Tests - Canon MultiPASS MP390 Service Manual

5.7.7 MODEM, NCU Tests

The Modem and NCU Test menu is selected by pressing the numeric key 4 or
These tests test modem and NCU transmission and reception. The modem tests check whether signals are sent
correctly from the modem by comparing the sound of the signals from the speaker with the sounds from a normal
modem. Also, you check on the display whether or not the modem correctly detected received tone signals and
DTMF signals.
End this test by pressing the Stop/Reset key.
Modem test type
Frequency test
G3 signal transmission test
V.34 G3 signal transmission test
a) Frequency test
The frequency test menu is selected by pressing the numeric key 2 or
menu. Signals of the frequencies below are sent from the modem using the modular jack and the speaker. The
frequency can be changed with the numeric keys.
NOTE:
The transmission levels for each frequency follow the service data transmission level settings.
Download Service Manual And Resetter Printer at http://printer1.blogspot.com
T-5-6
Overview
The modem sends tonal signals from the modular jack and the speaker.
The modem sends G3 signals from the modular jack and the speaker.
The modem sends V.34 G3 signals from the modular jack and the
speaker.
T-5-7
Numeric key Frequency
1 462 Hz
2 1100 Hz
3 1300 Hz
4 1500 Hz
5 1650 Hz
6 1850 Hz
7 2100 Hz
and from the test mode menu.
and keys from the MODEM NCU test
Chapter 5
0004-3320
5-33