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Troubleshooting Image Defects On HP CP4025 CP4525 CM4540 CP3525 CM3530 Printers

Troubleshooting Image defects like vertical streaks on printouts or purple toner on the belt for HP CP4025 CP4525 CM4540 CP3525 CM3530 Printers


HP printers are known for their reliability and high-quality printing capabilities. However, like any other electronic device, they can sometimes experience image defects that affect the overall print quality. If you own an HP CP4025, CP4525, CM4540, CP3525, or CM3530 printer and are facing image defects, this article will guide you through troubleshooting steps to help you resolve the issue.


Check these things:

Is the toner collection bottle full ?

Empty or replace it. For CP3525 use Part # CE245A, for CP4525 use CE265A.


Is the waste toner duct clogged ?

Remove the toner collection bottle and locate the waste toner duct. Open the spring-

loaded door and gently poke inside with a toothpick or similar fine tool.


Is the toner collection motor working properly ?

From the control panel, select ‘DIAGNOSTICS’ then select ‘COMPONENT TEST’ then

select ‘TCU MOTOR’. The toner collection motor will spin for 10 seconds – listen

closely for it at the front left upper corner of the printer. If you don’t hear anything or

it doesn’t sound quite right, replace it. For CP3525 use Part # RM1-4977, for CP4525 use RM1-5605.


To help pinpoint the source of a repetitive image defect, please refer to these rulers:


For the CP4025/CP4525/CM4540 Printer Transfer Belts Image Defects:

  1. If the defect occurs every 27mm, 32mm, 48mm or 76mm, one of the four toner cartridges

  2. may be causing it.

  3. If the defect occurs every 44mm or 63mm, the transfer kit is causing it.

  4. If the defect occurs every 76mm or 80mm, the fuser may be causing it.

  5. If the defect occurs every 51mm, the secondary transfer roller is causing it.


For the CP3525/CM3530 Printer Transfer Belts Image Defects:

  • If the defect occurs every 27mm, 32mm or 49mm, one of the four toner cartridges is causing it.

  • If the defect occurs every 44mm, 63mm or 76mm, the transfer kit is causing it.

  • If the defect occurs every 77mm or 78mm, the fuser is causing it.

  • If the defect occurs every 50mm, the secondary transfer roller is causing it.

Use these rulers for reference/comparison:


Troubleshooting Image defects like vertical streaks on printouts or purple toner on the belt for HP CP4025 CP4525 CM4540 CP3525 CM3530 Printers
Troubleshooting Image defects like vertical streaks on printouts or purple toner on the belt for HP CP4025 CP4525 CM4540 CP3525 CM3530 Printers

Remember, it's always a good idea to consult the printer's service manual for specific instructions and guidelines related to your model. If the troubleshooting steps mentioned above don't resolve the image defects, don't hesitate to reach out to one of our HP support professionals for assistance. They can provide you with tailored solutions and further guidance to get your printer back to producing high-quality prints.

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