Brother MFC-L8850CDW Service Manual

2-120
Confidential
4.7.4 Drum error
< User Check >
- Clean the corona wire.
- Replace the drum unit with a new one.
4.7.5 Drum replacement message displayed on LCD is not cleared
< User Check >
- Refer to “2.3 Counter Reset of Consumable Parts (Drum unit/Belt unit)” in Chapter 5, and
reset the drum counter.
Step Cause Remedy
1 Dirt on the GRID terminals or
CHG terminals of the main
body and the drum unit
Clean the GRID terminals and CHG
terminals of the main body and the drum unit.
2 Dirt on the terminal of the
high-voltage power supply
PCB
Clean the terminal of the high-voltage power
supply PCB.
3 High-voltage power supply
PCB failure
Replace the high-voltage power supply PCB
ASSY.
4 Toner sensor failure Replace the toner/new sensor PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Main PCB failure Replace the main PCB ASSY.

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