Xerox WorkCentre 5020 Service Documentation

July, 2007
2-28
WorkCentre 5020
U4-3, U4-9
Initial Issue
Status Indicator RAPS
U4-3 FS1 Thermistor Defect
BSD-Reference: CH10.1 (Figure 1)
Explanation
Thermistor FS1 cannot be monitored any more.
Procedure
Check the condition of the Fuser. The Fuser is installed properly.
YN
Install the Fuser properly.
Check the resistance of the Thermistor. There is no open circuit between J601-1 ( P/J601)
and J601-2, and the resistance is a minimum of 228k ohms (cold).
YN
Replace the Fuser (PL 5.1) (REP 5.1.1).
Check the wire between J408 ( P/J408) and P601 ( P/J601). The wire is not shorted or
open.
YN
Repair the wire.
Replace the Fuser (PL 5.1) (REP 5.1.1) and the AIOC PWB (PL 8.1) (REP 8.1.1) in that order.
U4-9 Fuser Fan Defect
BSD-Reference: CH10.3 (Figure 3)
Explanation
After the start of Fan Fail Signal monitoring, the signal level was Low not more than 30 times.
Procedure
Turn the power ON. Visually check the NOHAD Fan (PL 9.2). The NOHAD Fan is rotating.
YN
Measure the voltage between the AIOC PWB P405-3 ( P/J405) (+) and GND (-). The
voltage is approximately +24VDC.
YN
Replace the AIOC PWB (PL 8.1) (REP 8.1.1).
Replace the NOHAD Fan (PL 9.2) and the AIOC PWB (PL 8.1) (REP 8.1.1) in that order.
Measure the voltage between the AIOC PWB P405-2 P/J405 (+) and GND (-). The voltage
is 0.
YN
Replace the NOHAD Fan (PL 9.2) and the AIOC PWB (PL 8.1) (REP 8.1.1) in that order.
Replace the AIOC PWB (PL 8.1) (REP 8.1.1).

Xerox WorkCentre 5020 Specifications

General

Print Technology	Laser
Print Speed	Up to 20 ppm
Print Resolution	Up to 600 x 600 dpi
Max Paper Size	A3
Standard Paper Capacity	250 sheets
Bypass Tray Capacity	100 sheets
Duplex Printing	Manual
Copy Speed	Up to 20 cpm
First Page Out Time (Copying)	Less than 10 seconds
Scan Resolution	Up to 600 x 600 dpi
Operating System Compatibility	Windows, Mac OS
Automatic Document Feeder	50 sheets
Connectivity	USB 2.0
Functions	Print, Copy
Reduction / Enlargement	25% - 400%
Scan Destinations	USB, Email
Fax Transmission Speed	33.6 kbps
First Page Out Time (Printing)	Less than 8 seconds