Xerox PHASER 7500 - Print-Quality Troubleshooting; Repeating Defect Measurement

Phaser 7500 Printer Service Manual 5-21
Print-Quality Troubleshooting
Print-Quality Troubleshooting
Repeating Defect Measurement
When horizontal lines and/or spot occur periodically, it is possibly caused by a
particular roller. Measure the trouble interval on the test print, and check the
relation to the Roller in the table. The interval does not necessary match
circumference of the Roller.
Horizontal Line and Spot Trouble Measurement
Maintenance
Item
Distance Between
Defects
Replacement
Part List
Number
Fuser 25 mm (0.99 in.)
83 mm (3.27 in.)
95 mm (3.74 in.)
Fuser PL7.1.1
(page 9-37)
Imaging Unit 95 mm (3.74 in.)
38 mm (1.50 in.)
Imaging Unit PL8.1.4
(page 9-38)
Transfer Roller 54 mm (2.13 in.) Transfer Roller PL14.2.1
(page 9-86)
Developer Roller 29 mm (1.14 in.) Developer Housing
Assembly
PL5.2.2
(page 9-28)