Xerox 4150 - WorkCentre B/W Laser, Service Manual

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January 2016
2-74 WorkCentre WorkCentre 4150/4250/4260WorkCentre 4150/4250/42604150/
10-100, 200, 10-300
Status Indicator RAPs
6. Check that there is continuity through the fuser heat lamps and across the over tempera-
ture cut-out. Install new components as necessary,
PL 10.28 .
7. Check the wiring between the fuser connector, PL 4.15 Item 20 and CN5 on the Main
PWB . If necessary, install a new fuser connector, PL 4.15 Item 20 .
8. Check the wiring between CON1 on Power Supply Unit 2 and CN13 on the Main PWB .
9. Install new components as necessary:
• Fuser assembly, PL 10.28 Item 1 .
• Power supply unit 2, PL 1.15 Item 4 .
10. Perform the OF5 Main PWB Check RAP.
10-300 Over Heat Error RAP
10-300 The fuser temperature has risen above the normal level. Although the fuser unit can
return to a normal operating temperature, the fuser may consequently be damaged.
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.
WARNING
Do not touch the fuser while it is hot.
Go to the relevant procedure:
• 4150 Checkout
• 4250/4260 Checkout
• 4265 Checkout
4150 Checkout
NOTE: The main PWB has 4 test points, GND, +3.3V, +5V and +24V. The location of the test
points is shown on the
Main PWB PJ location illustration.
Refer to Wiring Diagram 1 , Wiring Diagram 2 and Wiring Diagram 4 . Perform the following:
1. Enter codes 10-200 (centre thermistor) and 10-210 (front thermistor). Perform a fuser
temperature check to verify the condition of the thermistors. Use the following values as a
temperature reference:
NOTE: To read the value in 10-200, stop and start the machine to see the variations in
value.
• 10-200 cold +/- 90
• 10-200 warm +/- 169
• 10-210 cold +/- 60
• 10-210 warm +/- 136
2. Switch off the machine. Remove the fuser assembly. Examine the fuser assembly for heat
damage. Install new components as necessary,
PL 10.25 and PL 10.26 .
3. Check that the thermistors, PL 10.25 Item 9 are in good contact with the fuser heat roller
and are clean. Check the wiring to the thermistors. Install new components as necessary,
PL 10.25 .
4. Check that there is continuity through the fuser heater and across the over temperature
cut-out. If necessary, install a new thermostat assembly,
PL 10.25 Item 2 .
5. Check the wiring between the fuser connector, PL 4.15 Item 20 and CON3, CON8 and
CON9 on Power Supply Unit 2 . If necessary, install a new fuser connector.
6. Check the wiring between CON4 on Power Supply Unit 2 and CN7 on the Main PWB .
7. Check that the fuser fan is working. Go to the OF3 Air Systems RAP.
8. Install new components as necessary:
• Power supply unit 2, PL 1.10 Item 4 .
• HVPS, PL 1.10 Item 2 .
9. Perform the OF5 Main PWB Check RAP.