Precautions For Service; Eeprom Data Precautions - Canon BJC-1000 Service Manual

BJC-1000

3. PRECAUTIONS FOR SERVICE

3.1 EEPROM Data Precautions

The printer keeps track of various settings, the total waste ink amount, and the total
sheets printed with the black, color and photo BJ cartridges. This data is stored in the
EEPROM on the logic board. Note the following precautions during servicing:
1) Before servicing
Check the EEPROM data with a test print. The total sheets printed can give you an
idea of how much the printer has been used.
2) During logic board (EEPROM) replacement
Always visually check the waste ink amount absorbed by the waste ink absorbers
and replace them when necessary as explained in
Cover Replacement Cautions (page
If the waste ink absorbers are not visually checked regularly, they may reach or
exceed their full capacity before "waste ink full" is detected. The waste ink may
therefore start leaking.
The memory data for the replacement logic board (EEPROM) is not defined.
Therefore, after replacing the logic board (and EEPROM), reset the total waste ink
amount to zero by clearing the data.
3) After bottom cover unit replacement
After replacing the bottom cover unit, reset the total waste ink amount to zero by
clearing the EEPROM data.
CAUTION
REF.
5-4).
After the EEPROM is reset, the data it contained cannot be printed out
with a test printout. If you want to check the stored data, be sure to
execute test printout before resetting the EEPROM.
When the stored data is reset, the various settings, the total count of
printed sheets, and the total waste ink amount will all be reset. The total
sheets printed and waste ink amount cannot be input using the operation
panel.
Immediately after the printer is turned on, it keeps track of the estimated
waste ink amount based on the usage conditions. To prevent ink leakage
when the waste ink amount exceeds the waste ink absorption capacity, the
printer stops printing and indicates an error when the waste ink
absorption capacity is close to being full.
For details on checking the EEPROM data with a test printout and for
clearing the data, see Part 3: 2.4 EEPROM Reset (page 3-13)
If the printer stops operating in the case of a waste ink full error, follow the
countermeasures described in
Part 1: Safety and Precautions
Part 5: 3.3 Logic Board and Bottom
Part 5: 4.1 Troubleshooting (page 5-5)
1-7
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