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Lines caused by faulty ITB
Published on January 29th, 2021
Covers HP Models: CM3530MFP, CP3525, CP4025, CP4525, M551, M575MFP, M552, M553, M577MFP, CP5225, CP5525, M775MFP, CM4540MFP, M651, M652, M653, M680MFP, M681MFP, M682MFP, CP6015, CM6040MFP, M855, M880MFP
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This problem is seen with lines or streaks that show on the page in paper feed direction. They are usually dark gray lines, but other colors can be present as well. This issue can occur when there is either an issue with a toner cartridge or if the cleaning mechanism on ITB is faulty.
Solution:
- Perform a “DISABLE CARTRIDGE CHECK” to isolate the problem from any of the toner cartridges
- For instructions to diagnose this issue, visit: https://www.laserpros.com/img/TechTips/disable-cartridge-check.pdf
- If toner cartridges are eliminated as the cause, replace transfer kit
- For installation instructions, visit: https://www.laserpros.com/technical-resources/reference-tools/installation-instructions
Example showing lines caused by faulty ITB:
