Canon Color Bubble Jet BJC-1000 Series, Service Manual

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Part 5: Maintenance
BJC-1000
5-18
<Symptom>
•There is blotching.
•There are white stripes.
•The specified dots are not printed.
<Cause>
•The BJ cartridge or cartridge contacts are faulty.
•The carriage ribbon cable is faulty.
•The purge unit or paper feed mechanism (missing
gear tooth) is faulty.
<Measure>
Yes
No
Printer environment
and paper
specifications check
Yes
No
END
Replace the BJ cartridge
Required
specifications
met ?
Use printing paper
that meets the
specifications
Remove and reinstall
the BJ cartridge
Execute a test print
Print defects ?
Yes
No
END
Conduction of carriage
ribbon cable check
Yes
No
Conduction
cutoff ?
Replace the carriage
unit
Replace the purge unit
While the printer is on, double-click the RESUME button .
A nozzle check pattern will be printed out.
Blotches and
stripes still appear
after cartridge
replacement ?
Troubleshooting consists of error condition
diagnosis, which is required if the cause of an error
is unknown, and error recovery, which is performed
if the cause of an error is known. If the cause of
an error is unknown, perform the error condition
diagnosis, and if it is known, perform error
recovery.
White Line Sample
4 Faulty Printing
<2>: White
Stripes Appear