Xerox Phaser 4500, Service Manual

Page: 194 / 537

General Troubleshooting 4-41
Electrical Noise
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■
HVPS/Engine Logic Board
■
Print Cartridge Right Guide
Assembly
■
Fuser Assembly
■
Print Cartridge
■
ANT Harness Assembly
■
AC Power Harness Assembly
■
LVPS Harness Assembly
■
Optional 550-Sheet Paper
Feeder
■
550-Sheet Feeder PWBA
■
Duplex Unit PWBA
■
“Print Engine Plug/Jack Locator” on page 10-3
■
“Print Engine General Wiring Diagram” on
page 10-17
■
“Print Cartridge, Transfer Roller Assembly” on
page 10-21
■
“Fuser Assembly, Power Switch” on page 10-20
■
“24 V Interlock, Rear Cover Switch, Main Motor, Sub
Fan, Exit Motor Assembly” on page 10-18
■
“550-Sheet Feeder Plug/Jack Locator” on
page 10-10
■
“550-Sheet Feeder Signal Diagram” on page 10-28
■
“Duplex Unit Plug/Jack Locator” on page 10-12
■
“Duplex Unit Signal Diagram” on page 10-30
Troubleshooting Procedure
Steps Actions and Questions Yes No
1 Check for foreign noise:
Are there any other electrical
appliances within 3 m of the printer,
such as generators, radios, and
appliances with motors? Go to step 2. Go to step 3.
2 Either turn off the other electrical
appliances, or re-locate the printer at least
6 m from other appliances.
Does the electrical noise problem still
occur? Go to step 3 Problem solved.
3
Check the AC ground.
Is AC power supply outlet wired and
grounded correctly? Go to step 4. Request that the
customer fix the
AC power supply
outlet.
4
Check the AC Power Harness Assembly.
Is the cable connected to the AC Power
Harness Assembly correctly grounded? Go to step 5. Install the ground
screw correctly.
5 Replace the Print Cartridge.
Does the electrical noise problem still
occur after replacement? Go to step 6. Problem solved.