Fuser service check

When toner is partially fused to the media, it is usually caused by low fuser temperature.

The line voltage to the printer must be within the following limits:

100 V ac-127 V ac for the 110 V model printer

200 V ac-240 V ac for the 220 V model printer

This printer uses a belt fuser and therefore does not have a lamp.

Fuser service check

FRU

Action

 

 

 

Unplug the printer, and disconnect the fuser cable plug from the LVPS/HVPS board

 

connector at CN102.

 

Check for continuity across the fuser by checking across the connector pins.

 

If there is continuity, then check the LVPS/HVPS. See “LVPS/HVPS service check”

Fuser power cable

 

on page 2-25.

If there is no continuity, then disconnect the fuser power cable at both ends and check

LVPS/HVPS

 

each conductor for continuity. Replace cable if necessary.

Fuser

 

If the cable tests good, then replace the fuser.

 

Reconnect the cables, turn the printer on, and at &12, check for approximately +5 V dc on pin 1 and ground on pin 2. If line voltage is incorrect on pin 1, then see “Controller board service check” on page 2-22for more information.

Disconnect the thermistor cable from J12 on the controller board. Measure the resistance across the ends of the thermistor cable.

Replace the fuser assembly if the resistance is lower than 1K ohm or shorted.

Note: Resistance measures approximately 400K ohms when cool and 1K ohms hot.

Fuser

LVPS/HVPS service check

FRU

Action

LVPS portion of board

Fuses that open typically indicate a faulty LVPS/HVPS.

 

Disconnect the power cable, and open the LVPS/HVPS enough to test the switch. The

 

switch will show continuity across the conductors with a meter when the switch is on. If the

LVPS/HVPS

switch is good, then see “Dead machine service check” on page 2-24 for more

diagnostics.

 

HVPS portion of board

 

Problems with the HVPS are exhibited in the print quality. See “Print quality service

 

checks” on page 2-30 for more information.

Diagnostics information 2-25

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Image 51
Dell 2330dn service manual Fuser service check, LVPS/HVPS service check, Lvps portion of board