Canon FAX L1000 Service Manual page 529

3.6.7 Maintenance and service
a) Troubleshooting
The fax does not recognize the FAX-L1000 ISDN KIT even when it is attached
properly.
Solutions:
b) D-channel error codes and B-channel error codes
• D-channel error codes (##1001~##1131)
D-channel protocol error codes are generated by taking the "cause number" notified which
has been notified by the network and adding "1000" to it inside the machine. The required
reason for the disconnection or restoration is assigned in the "cause number", but even if
the "cause number" notified by the each country's network is identical, there will be times
when the required reason for the disconnection or restoration will differ.
##1001 [TX/RX] a) Unallocated (unassigned) number
b) Invalid call reference value
Cause a):
Solutions a):
Cause b):
Solutions b):
(1) Check that the kit is securely connected.
(2) Replace the kit.
(3) Replace the TWINS board.
(4) Replace the SCNT board.
Indicated above
Remove the document and transmit/copy again.
(1) Re-check the phone number and try the call again.
(2) Output a communications analysis list, and analyze it.
(3) Make sure the 4 digits of the applicable error code are registered in
#4C ISDN BASIC, [G4/G3 Fallback] and [Speech Fallback] .
(4) Take countermeasures as outlined in D-channel connection
error in this Chapter, 3.6.6 Maintenance and service, c)
Communication problems.
(5) Make an inquiry to the maker of the Switching equipment.
Indicated above
(1) Re-trasmit.
(2) Output a communications analysis list, and analyze it.
(3) Make sure the 4 digits of the applicable error code are registered in
#4C ISDN BASIC, [G4/G3 Fallback] and [Speech Fallback] .
(4) Take countermeasures as outlined in D-channel connection
error in this Chapter, 3.6.6 Maintenance and service, c)
Communication problems.
(5) Make an inquiry to the maker of the Switching equipment.
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FAX-L1000 Chapter 5: Appendix