Print Test ((3) Print Test); Modem Test((4) Modem Test) - Canon iR2020 Series Service Manual

Chapter 14
Scan test ((2) SCAN TEST)
Press the numeric keypad key 2 on the test mode menu to select the CCD test.
Press numeric keypad keys 1, 3 and 4 during the CCD test to carry out the individual tests described below.
Numeric keypad key 1
Corrects the LED output of the contact sensor and sets its parameters automatically. (AGC adjustment)
Numeric keypad key 3
Adjusts the document scan position (only on models with the ADF feature installed). Adjusts the position of the contact sensor for scanning documents fed from
the ADF automatically.
Numeric keypad key 4
Detects trash at reader scan positions A/B/C.
Pos A: Reference read position
Pos B: About 0.5 mm inside of the roller from the reference position
Pos C: About 1.0 mm inside of the roller from the reference position

14.15.5 Print Test ((3) PRINT TEST)

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i

Print test ((3) PRINT TEST)

Press the numeric keypad key 3 on the test mode menu to select the print test.
Press numeric keypad keys 2 and 4 during the print test to generate test patterns as described below. Two kinds of service test patterns are available. Other test
patterns are reserved for factory/development purposes.
Numeric keypad key 2
(2) BLACK: All-black output
Numeric keypad key 4
(4) ENDURANCE: Black belt output
To cancel test printing, press the stop key.

14.15.6 MODEM Test((4) MODEM TEST)

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
MODEM test((4) MODEM TEST)
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.
End this test by pressing the Stop key.
Keypad
1
2
4
5
6
8
Relay Test
Press '1'or '2' on the keypad on the Modem test menu to select relay test mode. Use the keypad to operate the various relays of the NCU. '2' on the keypad is used
for 230V machine.
Numeric keypad key 1
The input key and relay are shown below:
14-36
Use it to make sure that the print
pattern does not have white lines
or uneven image.
Type
Relay test
Frequency test
G3 signal transmission test
DTMF signal reception test
Tonal signal reception test
V.34 G3 signal transmission test
Use it to make sure that the print
pattern does not have contraction/
elongation of an image or dirt/black
line.s
F-14-10
Description
Use it to turn on/off a selected relay to execute a switch-over test
The modem sends tonal signals from the modular jack and the speaker.
The modem sends G3 signals from the modular jack 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.
The modem sends V.34 G3 signals from the modular jack and the speaker.
0011-0888
0011-0889