Brother MFC-8810DW Service Manual

2-74
Confidential
 Faulty registration
 Dark
<User Check>
- Check that the appropriate paper type is selected in the
driver.
Step Cause Remedy
1
Adjusted value of the laser unit is
incorrect.
Refer to "2.1 Entering Adjusted Value of
Laser Unit" in Chapter 4, and enter the
adjusted value of the laser unit again.
2
Registration rear actuator caught in
some sections of the machine
Reattach the registration rear actuator.
3 Laser unit failure Replace the laser unit.
<User Check>
- Check the usage environment of the machine. Using the machine in
high temperature and humidity conditions can cause this problem.
- Clean the corona wire.
- If a new toner cartridge has been set, check whether it was replaced
with a used toner cartridge.
- Adjust the density using the Density Adjustment.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step Cause Remedy
1
Dirt on electrodes of the drum unit Clean the electrodes of the drum unit and
those of the machine. (Refer to Fig. 2-10 or
Fig. 2-11.)
2
High-voltage power supply PCB
failure
Replace the high-voltage power supply PCB
ASSY.
3 Laser unit failure Replace the laser unit.
4 Main PCB failure Replace the main PCB ASSY.

Brother MFC-8810DW Specifications

General

Print Technology	Laser
Functions	Print, Copy, Scan, Fax
Print Resolution	Up to 1200 x 1200 dpi
Automatic Duplex Printing	Yes
ADF Capacity	50 sheets
Monthly Duty Cycle	Up to 50, 000 pages
Memory	128 MB
Fax Speed	33.6 kbps
Processor	400 MHz
Connectivity	USB, Ethernet, Wi-Fi Direct
Scanning Resolution	Up to 19200 x 19200 dpi (Interpolated)
Mobile Printing	Brother iPrint&Scan, AirPrint, Google Cloud Print
Maximum Paper Size	Legal (8.5" x 14")
Print Speed	Up to 40 ppm