Brother MFC-8880DN Service Manual

3-57
Confidential
■ Faint print
■ White spots
<User Check>
- Check that the machine is installed on a level surface.
- Replace the toner cartridge with a new one.
- Clean the scanner windows of the toner unit with a soft
cloth. (Refer to Fig. 3-6.)
- The drum unit may be damaged. Replace the drum unit
with a new one.
Step Cause Check
Result Remedy
1
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
2
Laser unit failure Is the problem solved
after replacing the laser
unit?
Yes
Replace the laser unit.
3
Toner empty
sensor failure
Is the "Toner Life End"
message indicated on
the LCD after replacing
the current toner
cartridge with a new
one?
No
Replace the toner sensor
PCB ASSY.
<User Check>
- Toner may be empty. Replace the toner cartridge with a new one.
- If the problem is not solved after printing a few pages, the drum unit
may have glue from label stock on the exposure drum surface. Refer
to the next page, and wipe it off gently with a cotton swab.
- The drum unit may be damaged. Replace the drum unit with a new
one.
Step Cause Check
Result Remedy
1
Toner attached
on the develop
roller
Are the white spots at
42.5 mm (develop roller
circumference)
intervals?
Yes
This problem will
disappear by printing
approximate 10 pages. If
the same problem occurs,
replace the toner cartridge.
2
Drum unit
connection
failure
Are the electrodes on
the drum unit and
machine body dirty?
Yes
Clean both electrodes.
(Refer to Fig. 3-2, Fig. 3-3.)
3
Scratch and Dirt
on the exposure
drum
Are the white spots at
94.2 mm (exposure
drum circumference)
intervals?
Yes
Replace the drum unit.
4
HVPS PCB
failure
Is the problem solved
after replacing the
HVPS PCB ASSY?
Yes
Replace the HVPS PCB
ASSY.
5
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.

Brother MFC-8880DN Specifications

General

Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Economical printing	Yes
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	30 ppm
Scan to	E-mail, E-mail Server, File, FTP, Image, OCR, USB
Scanner type	Flatbed & ADF scanner
Grayscale levels	256
Input color depth	24 bit
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	600 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4, 9, 16
Time to first copy (black, normal)	10.5 s
Copy speed (black, normal quality, A4)	30 cpm
Faxing	Mono faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	300
Total input capacity	250 sheets
Total output capacity	150 sheets
Auto document feeder (ADF) input capacity	50 sheets
Internal memory	64 MB
Card reader integrated	No
Sound power level (standby)	30 dB
Sound pressure level (printing)	56 dB
Display	LCD
Market positioning	Business
Dimensions (WxDxH)	531 x 451 x 475 mm
All-in-one functions	Copy, Fax, Print, Scan
Maximum internal memory	0.576 GB
Color all-in-one functions	Scan
Maximum print size	216 x 356 mm
Paper tray media types	Plain paper, Recycled paper
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Maximum ISO A-series paper size	A4
Standard interfaces	Ethernet
USB 2.0 ports quantity	1
AC input frequency	50 - 60 Hz
Power consumption (standby)	85 W
Power consumption (PowerSave)	18 W
Power consumption (average operating)	680 W
Maximum duty cycle	- pages per month
Package weight	22100 g
Mac operating systems supported	Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion
Server operating systems supported	Windows 2000 Advanced Server, Windows 2000 Server, Windows Server 2003, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 x64
Windows operating systems supported	Windows 2000, Windows 2000 Professional, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Ultimate, Windows Vista Business, Windows Vista Business x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64