Xerox PHASER 3635 Service Manual

3-16
Phaser 3635MFP
IQ15, IQ16
Draft 4
Image Quality
IQ15 Different Image Density (Left and Right) RAP
Use this RAP when the printed sheets have different areas of image density across the pro-
cess direction. An example is shown in Figure 1.
Figure 1 Image density
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.
Perform the following:
1. The transfer roll pressure may be unbalanced. Check the spring pressure at each end, PL
9.10. Install new components as necessary, PL 9.10.
2. Shake the print cartridge to evenly distribute the toner. If necessary, install a new print
cartridge, PL 9.10 Item 1.
3. If necessary, install a new print cartridge, PL 9.10 Item 1.
4. Perform the Shading Test procedure, GP 15. If the shading test fails:
a. Install new components as necessary:
• CCD module, PL 14.10 Item 8.
• CCD module cable, PL 14.10 Item 23.
• Scanner assembly, PL 14.10 Item 26.
b. Perform OF7 Main PWB Check RAP.
IQ16 Horizontal Bands RAP
Use this RAP when the image has bands appearing across the process direction. An example
is shown in Figure 1.
Figure 1 Horizontal bands
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.
Perform the following:
1. Refer to Wiring Diagram 2. Check the spring contacts between the HVPS PL 1.10 Item 3
and the print cartridge PL 9.10 Item 1. The spring contacts supply the voltages to the print
cartridge. If necessary, clean the spring contacts.
2. If necessary, install a new print cartridge, PL 9.10 Item 1.
3. Measure the distance between the image and the defect. Refer to Table 1 to determine
the possible cause of the defect.
Table 1 Defect distance
Defect distance Roll Component Parts List Ref.
95mm (3.7 inches) Xerographic drum Print cartridge PL 9.10 Item 1
38mm (1.5 inches) Charge roll Print cartridge PL 9.10 Item 1
45mm (1.8 inches) Supply roll Print cartridge PL 9.10 Item 1
47mm (1.9 inches) Transfer roll Transfer roll PL 9.10 Item 2
89mm (3.5 inches) Heat roll Fuser assembly PL 10.15 Item 1
51mm (2 inches) Pressure roll 1 Fuser assembly PL 10.15 Item 2
64mm (2.5 inches) Pressure roll 2 Fuser assembly PL 10.15 Item 3

Xerox PHASER 3635 Specifications

General

Print Technology	Laser
Print Speed	35 ppm
Print Resolution	Up to 1200 x 1200 dpi
Standard Paper Capacity	550 sheets
ADF Capacity	50 sheets
Duplex Printing	Yes
Scanner Type	Flatbed with ADF
Functions	Print, Copy, Scan, Fax
Processor	360 MHz
Connectivity	Ethernet
Maximum Paper Size	8.5 x 14 inches
Scanner Resolution	Up to 600 x 600 dpi
Network Connectivity	Ethernet
Display	7-inch color touchscreen
Weight	49 lbs