Brother MFC-L8850CDW Service Manual

2-108
Confidential
■ White spots on one color image
< User Check >
- Check if the fuser fan and/or blower are not blocked.
- Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
- Replace the belt unit with a new one.
Fig. 2-14
Step Cause Remedy
1
Paper dust is accumulated Referring to the figure below, remove paper
dust attached on the paper dust cleaning
roller.
2
Dirt on the exposure drum Perform drum cleaning.
(Refer to “2.2 Drum Cleaning” in Chapter 5.)
3
Toner filter is clogged Clean the toner filter.
4
Scratch and dirt on fuser unit Replace the fuser unit.
5
High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
Paper dust
Rib
Paper tray
Paper dust cleaning roller
Rib
Paper dust cleaning roller cover

Brother MFC-L8850CDW Specifications

General

Type	all in one
Color	white
Tray Capacity	300
Automatic Document Feeder Capacity	50 sheets
Paper Size	8.5"x14"
Paper Handling	up to 300 sheets
Color Print Speed	32 pages per minute
Mono Print Speed	32 pages per minute
Print Resolution Color	up to 2400 x 600
Maximum Number of Pages Per Month	unknown
Scanner Type	flatbed
Scan Resolution	up to 2400 x 1200
Copier Resolution Mono	up to 600 x 600
Copier Resolution Color	up to 600 x 600
Cartridges	tn331bk, tn331c, tn331m, tn331y
Number Of Cartridges	4
Internal Memory	yes
Memory Card	no
Network	wired, wireless
Connectivity	usb, google cloud print
OS Compatibility	windows, mac os, linux
Mobile Devices Connection	yes

Weight and Dimensions

Height	19.3 inches
Width	20.7 inches
Net Weight	67.4 pounds