HP 8000 s manual See Cleaning the Transfer Charger later in this

Problem	Cause and Solution
(Repetitive defects,	Repeating spots or specks of the same size and shape
continued)	appear on almost all pages in the same area of the
	page. The repeating defects will generally be dark gray
	or black. If the defect is not acceptable, cleaning or
	replacing the imaging drum or the transfer drum might
	be necessary. If the defect occurs one or more times on
	each letter- or A4-sized page, the imaging drum should
	be replaced. If the defect occurs on every other letter-
	or A4-sized page, then the transfer drum should be
	cleaned. For information on cleaning the transfer drum,
	see “Cleaning the Transfer Drum” later in this chapter. If
	cleaning the transfer drum does not correct the
	problem, replace the transfer drum or contact a local
	authorized HP dealer or service representative for
	service. For more information on replacing the imaging
	drum or the transfer drum, see the installation guide
	included with the drum kit or transfer kit.
	Unwanted marks of the same size and shape appear
	more than once in the same vertical area on
	transparencies only. The fuser roller is damaged.
	Replace the fuser. For more information on replacing
	the fuser, see the installation guide included with the
	fuser kit.
Irregular wavy patterns	Irregular wavy patterns in solid fill backgrounds might
	indicate that the transfer charger needs to be cleaned.
	For more information on cleaning the transfer charger,
	see “Cleaning the Transfer Charger” later in this
	chapter.

196 8 Solving Printer Problems EN