Canon Color Bubble Jet BJC-1000 Series, Service Manual

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Part 3: Operating Instructions
BJC-1000
3-11
2.2 Cleaning the BJ Cartridge
Press and hold the RESUME button for two seconds or more. The cleaning time is
approximately 20 seconds.
After the cleaning, execute a test printout of the nozzle check pattern to check the print
quality. (Double click the
RESUME button.)
The printer cleans the BJ cartridge automatically at the following times:
1) When the printer is turned on for the first time. (When the AC plug is plugged in.)
2) After the BJ cartridge is replaced.
3) After the printer has been on for 72 hours following the last cartridge cleaning with a
black BJ cartridge installed.
4) After printing a prescribed number of dots.
2.3 Self-Test Printout
This printer has built-in self-test functions which can be executed without any
connection to a computer. There are two print modes available in self-test prints: the
nozzle check pattern and the service test print.
All self-test prints require Letter or A4-size paper. Using smaller sized
paper for a self-test print will result in parts of the printout being printed
directly on the platen.
2.3.1 Nozzle check pattern
Double click the RESUME button while the AC plug is plugged in. After printing one
page of the nozzle check pattern, the printer stops the test.
On the nozzle check pattern, a pattern using all nozzles, and the control ROM version
are printed. In the event that print defects appear, perform a cleaning operation of
the head. If print quality does not improve even after the cartridge is cleaned five
times, replace the BJ cartridge.
NOTE
Figure 3-13 Nozzle Check Pattern
Black BJ Cartridge
Printed with the first nozzle.
Printed with the 64th nozzle.
Color BJ Cartridge
Printed with the first nozzle.
Printed with the 16th nozzle.
16 nozzles
Yellow 16 nozzles
Magenta 16 nozzles
Cyan
Ver X.XX
Version Number of Control ROM
Version Number of Control ROM
Ver X.XX