HP CP4525DN Laser CC494A#ABA manual Transfer belt ITB on

Problem Sample Cause Solution

The page is all black or a solid color.

Poor contact exists in the primary charging bias or developing bias contacts between the print cartridge and the product.

Clean each contact of the color that produces the all black or solid color. If the problem remains after cleaning, check the contacts for damage. Replace any deformed or damaged parts. Replace the affected print cartridge.

White spots appear in an image

The primary transfer roller is	Replace the ITB. See Intermediate
deformed or has deteriorated.	transfer belt (ITB) on page 92.
The secondary transfer roller	Replace the secondary-transfer-
is deformed or has	roller. See Secondary transfer roller
deteriorated.	on page 90.

The back of the page is dirty.

Vertical streaks or bands appear on the page.

The secondary transfer roller	Replace the secondary transfer
is dirty.	roller. See Secondary transfer roller
	on page 90.
The fuser inlet guide or	Clean the dirty parts. If the dirt does
separation guide is dirty.	not come off, replace the guide.
The pressure roller is dirty.	Run the cleaning page several
	times. If the dirt does not come off,
	send a fuser cleaning kit. If the issue
	persists, replace the fuser. See
	Fuser on page 85.
Scratches are present on the	Replace the print cartridge of the
circumference of the	color that matches the defect.
photosensitive drum.
Scratches are present on the	Replace the fuser. See Fuser
circumference of the fuser	on page 85.
roller.
Scratches are present on the	Replace the ITB. See Intermediate
circumference of the ITB.	transfer belt (ITB) on page 92.
The ITB drive roller is
deformed or has deteriorated.
The ITB cleaning mechanism
is malfunctioning.

ENWW Solve image-quality problems 411