Service manual

BJC-4300

Part 5: Maintenance

6. Some troubleshooting procedures include successive countermeasures. These are

steps must be followed to resolve the problem.

After each countermeasure step, make a test print to confirm whether

the

problem

has been amended. If the problem persists, execute the subsequent

countermeasure steps.

Example 2

Countermeasure 1: After replacing the

cartridge, execute a test printout to check

whether the problem has been

fmed.

If the problem persists, execute the next countermeasure step 2 which calls for the

replacement of the logic board.

Ink cartridge replacement as a countermeasure is only applicable after the color EJ

cartridge has been used for the Symptom. When using the black

cartridge for

troubleshooting, advance to the next step.

After completing the troubleshooting. be sure to reconnect connectors and tighten

any loosened screws.

When replacing the logic board, be sure to check

the

waste ink absorbers’

ink amount on the rear of

the

printer base

vnit.

If necessary, reset the

EEPROM.

Refer to Part 3, 3.6 EEPROM Reset (page 3-25) and Part 5, 4.3 Logic Board and

Waste Ink Absorber Replacement Cautions (page 5-5).

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