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January 2016

3-20

WorkCentre WorkCentre 4150/4250/4260WorkCentre 4150/4250/42604150/

IQ17

Image Quality

IQ17 Periodic Printing Defects Check RAP

Use this RAP when the printed image shows regular patterns in black or white, across the pro-

cess direction.

Procedure

WARNING

Switch off the electricity to the machine. Disconnect the power cord from the customer

supply while performing tasks that do not need electricity. Electricity can cause death or

injury. Moving parts can cause injury.

1. Make 10 blank copies to clean the xerographic drum. If necessary, install a new xero-

graphic module, PL 9.10 Item 1.

2. Measure the distance between the repeated black or white abnormality. Refer to Table 1

(4150) or Table 2 (4250/4260) to identify the possible cause.

3. Install new components as necessary.

4. If the defect appears to be fuser related, ensure that the paper tray settings match the

paper or media size in the trays. Also, ensure the media is within specification. Refer to

GP 9 Paper and Media Specifications.

Table 1 Defect distance (4150)

Defect

distance

Kind of abnormal

image Roller Component Parts List Ref.

94mm

(3.7 inches)

White spot. Black spot Xerographic

drum

Xerographic module PL 9.10 Item 1

38mm

(1.5 inches)

White spot. Black spot Charge roller Xerographic module PL 9.10 Item 1

44mm

(1.7 inches)

Horizontal dark band Supply roller Xerographic module PL 9.10 Item 1

57mm

(2.2 inches)

Black spot, White spot Transfer roller Transfer roller PL 7.35 Item 19

126mm

(4.9 inches)

Black spot, White spot Heat roller Fuser assembly PL 10.26 Item

155mm

(6.1 inches)

Back side contamina-

tion

Pressure roller Fuser assembly PL 10.26 Item

Table 2 Defect distance (4250/4260)