Canon BJC 6000 Service Manual - Page 131

TROUBLESHOOTING, 1 Troubleshooting Overview, 1.1 Overview, 1.2 Notes on troubleshooting

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BJC-6000 Part 5: Maintenance 6. TROUBLESHOOTING 6.1 Troubleshooting Overview 6.1.1 Overview This chapter consists of two sections: diagnosis and action. If you do not know the possible cause of the problem, consult the diagnosis section first. If you know the possible cause of the problem, skip to the action section. 6.1.2 Notes on troubleshooting 1. Before starting diagnostic procedures, ensure that all connectors and ribbon cables are correctly connected. 2. If you are diagnosing the problem with the printer's covers removed and with power supplied, be careful not to get an electric shock from the power supply or shortcircuit the PC boards. 3. The flowcharts use the following symbols: Start/End Operation Judgement Action/ Replace Jump Stop 4. If you have replaced or repaired a part, be sure to make a test print to check that the problem is corrected. If the indicated measures of a specific step still fail to correct the trouble, try again, skipping to the next step. Example 1 Do print problems No appear? Yes 1. Replace the ink tank 2. Replace the BJ cartridge END Poor print quality? No Do print problems still appear? Yes END 5-13

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6. TROUBLESHOOTING
6.1 Troubleshooting Overview
6.1.1 Overview
This chapter consists of two sections: diagnosis and action.
If you do not know the
possible cause of the problem, consult the diagnosis section first.
If you know the
possible cause of the problem, skip to the action section.
6.1.2 Notes on troubleshooting
1. Before starting diagnostic procedures, ensure that all connectors and ribbon cables
are correctly connected.
2. If you are diagnosing the problem with the printer's covers removed and with power
supplied, be careful not to get an electric shock from the power supply or short-
circuit the PC boards.
3. The flowcharts use the following symbols:
4. If you have replaced or repaired a part, be sure to make a test print to check that
the problem is corrected.
If the indicated measures of a specific step still fail to
correct the trouble, try again, skipping to the next step.
Example 1
5-13
BJC-6000
Part 5:
Maintenance
Start/End
Operation
Judgement
Action/
Replace
Jump
Stop
1. Replace the ink
tank
2. Replace the BJ
cartridge
Do print problems
appear?
No
Yes
END
No
Yes
END
Poor print quality?
Do print problems
still appear?