Canon iR2020 Series Service Manual

Chapter 14
14-9
14.3.3.2 Detailed Discussions of Bit 7
0011-1738
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Use it to enable/disable transmission of a 1080-Hz tonal signal before transmission of the CED signal.
Select 'transmit' if errors occur frequently because of an echo when reception is from overseas.
Memo:
Any of the following error code may be indicated because of an echo at time of reception
##0005, ##0101, ##0106, ##0107, ##0114, ##0200, ##0201, ##0790
14.3.4 SSSW-SW04
14.3.4.1 List of Functions
0011-1739
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
T-14-3
14.3.4.2 Detailed Discussions of Bit 2
0011-1740
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Use it to select the number of last flag sequences for a protocol signal (transmission speed at 300 bps). Select '2' if the other party fails to receive the protocol signal
properly.
Memo:
Any of the following error codes may be indicated at time of transmission
##0100, ##0280, ##0281, ##0750, ##0753, ##0754, ##0755, ##0758, ##0759, ##0760, ##0763 ##0764, ##0765, ##0768, ##0769,##0770, ##0773, ##0775, ##0778,
##0780, ##0783, ##0785, ##0788
14.3.4.3 Detailed Discussions of Bit 3
0011-1741
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Use it to select an appropriate reception mode after transmission of the CFR signal.
If errors occur frequently at time of reception because of the condition of the line, select 'high speed' for reception mode and, at the same time, selects 'do not receive'
for 'ECM reception.'
Memo:
Any of the following error codes may be indicated at time of reception because of line condition
##0107, ##0114, ##0201
Be sure to change bit 4 before changing this bit; if errors still occur, change this bit.
When 'high speed' is selected, only high-speed signals (images) will be received after transmission of the CFR signal.
14.3.4.4 Detailed Discussions of Bit 4
0011-1742
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Use it to select the time length during which low-speed signals are ignored after transmission of the CFR signal.
If the condition of the line is not good and, therefore, the reception of image signals is difficult, select '1500 ms.'
14.3.4.5 Detailed Discussions of Bit 6
0011-1743
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Selects whether or not to transmit CNG signal during manual transmission.
In manual transmitting to a fax with the FAX/TEL switching mode, if there are frequent errors due to failure to switch to fax mode, select "Transmitted" for the
CNG signal.
14.3.4.6 Detailed Discussions of Bit 7
0011-1744
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Selects whether or not to transmit CED signals during manual reception. If the other fax does not transmit even when you start manual reception, select "Transmit-
ted" for the CED signal.
2 not used - -
3 not used - -
4 not used - -
5 not used - -
6 not used - -
7 tonal signal before CED signal transmission transmit do not transmit
Bit Function 1 0
0 not used - -
1 not used - -
2 the number of final flag sequences of protocol signals 2 1
3 Reception mode after CFR signal transmission high speed high speed/low speed
4 the length of the period of ignoring low speed signals after
CFR output
1500 ms 700 ms
5 not used - -
6 CNG signal for manual transmission Not transmitted Transmitted
7 CED signal for manual reception Not transmitted Transmitted
Bit Function 1 0

Canon iR2020 Series Specifications

General

Print Technology	Laser
Copy Resolution	600 x 600 dpi
Scan Resolution	600 x 600 dpi
Network Ready	Optional
Print Speed	20 ppm
Resolution	600 x 600 dpi
Duplex Printing	Optional
Connectivity	USB 2.0
Type	Monochrome
Paper Size	A4, A5, B5
Copy Speed	20 cpm
Multiple Copy	Up to 99 copies
Scan Speed	20 ipm
Warm-up Time	Less than 15 seconds
First Print Time	Less than 10 seconds
Paper Input	250 sheets
First Copy Time	Less than 10 seconds