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Troubleshooting
● Code :
29-000
29-001
29-002
29-003
● Error message
29-000 : Density calibration for yellow color is failed. Check its imaging unit
29-001 : Density calibration for magenta color is failed. Check its imaging unit
29-002 : Density calibration for cyan color is failed. Check its imaging unit
29-003 : Density calibration for black color is failed. Check its imaging unit
● Symptom : The toner calibration value of the Imaging Unit is abnormal.
● Possible Cause:
1. The sensitivity value of the toner density sensor is not in normal area.
2. The circuit related to CRUM has some problem.
● Troubleshooting method :
① Open and close the side cover (1~2 times)
② If the problem persists, replace the imaging unit.
③ If the problem persists after replacing the imaging unit, check the relative harness and hardware part.
[case1] The sensitivity value of the toner density sensor is not in normal area.
[case2] The circuit related to CRUM has some problem.
① Check the circuit related to CRUM in the imaging unit.
1
2
3
- Disassemble the CRUM part.
- Check if the sensor harness is defective or
connector is connected properly.
- Replace the imaging unit.
First, turn the machine off then re-install the imaging unit.
Turn the machine on. If the problem persists, check the following.
To be continued on next page…
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