Canon BJC-820, Service Manual

Page: 69 / 105

<Symptoms>
No prints; Partial prints; No prints for specific
colors
<Cause>
The ink tank(s), BJ cartridge, or purge unit is defective;
the orange cap is affixed to the head unit.
<Measure>
4-15
BJC-8200 Part 4: TROUBLESHOOTING
TR
OUBLE
SHOO
TING
Yes
No
Cleaning operation
Print the nozzle check
pattern
Do print problems
appear?
Yes
No
Do problems still
occur?
END
END
Repeat these steps up to 5 times
Yes
No
OK?
Visually check BJ
cartridge
Is the orange cap attached to the head unit?
Are ink tanks installed correctly?
Replace the purge unit
1. Replace the relevant
ink tank(s)
2. Replace the BJ
cartridge
Repair or replace
relevant parts
See Part 3: 1.5.2 Nozzle check pattern printing (page 3-6)
2. Faulty Printing:
No Printing