Troubleshooting According To Image Defect; Light; Faulty Registration - Brother DCP-1510 Service Manual

4.4

Troubleshooting According to Image Defect

End users can solve problems related to image defects as long as they follow the User Check items.
If the problem still cannot be solved, implement each procedure according to the step numbers in the
tables below.

4.4.1 Light

Step
Dirt on electrodes of the drum unit
1 and those of the machine
Toner type determination failure
2 when a new toner cartridge is
detected
3 Fuser unit failure
High voltage power supply PCB
4
failure
5 Laser unit failure
6 Main PCB failure

4.4.2 Faulty registration

Step
Adjusted value of the laser unit is
1 incorrect.
Paper printing position actuator
2
caught in sections of the machine
3 Laser unit failure
<User Check>
- Check the usage environment of the machine. Using the machine in
hot-humid or cold-dry conditions can cause this problem.
- If the whole page is light, toner save mode may be ON. Turn OFF
the toner save mode.
- Adjust the density using the Density Adjustment.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Cause
<User Check>
- Check that the appropriate paper type is selected in the
driver.
Cause
1-48
Remedy
Clean the electrodes of the drum unit and
those of the machine. (Refer to
Fig. 1-8.)
Reset the toner manually. (Refer to
Manual Toner Reset Functions" in Chapter
4.)
Replace the fuser unit.
Replace the high voltage power supply PCB
ASSY.
Replace the laser unit.
Replace the main PCB ASSY.
Remedy
Refer to "2.1 Entering Adjusted Value of
Laser Unit" in Chapter
adjusted value of the laser unit again.
Reattach the paper printing position
actuator.
Replace the laser unit.
Fig. 1-7 or
"2.1
3, and enter the
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