Canon BJC-3000 Service Manual page 83

BJC-3000
3. Faulty Printing
/Blank Lines
Appear
<Measures>
Cleaning
Nozzle check pattern
Print defects?
Yes
1.Replace the
appropriate ink tank
2.Replace the BJ
cartridge
Problem recurrence?
Yes
Next
Page
<Symptom> · Blotches appear
· Blank lines appear
· Specified dots are not printed
<Cause> BJ cartridge, faulty BJ cartridge contacts, carriage ribbon
cable, purge unit, control board, carriage board, faulty ink
tank.
Execute cleaning five times.
See Part 3: 1.3.2 Nozzle check pattern print
(Page 3-6) .
No
END
No
END
4-19
Part 4: Troubleshooting