Brother MFC-L8850CDW Service Manual

5-61
Confidential
1.3.32 Operational check of fans (Function code 78)
<Function>
This function is used to check that each fan is operating normally. The rotation speed is
changed among three settings: 100%, 50% and OFF
<Operating procedure>
(1) Press the 7 and 8 keys in this order in the initial state of the maintenance mode.
“F100 P100 B100” is displayed on the LCD, and all the fans operate at the rotating speed
of 100%.
(2) Press the Mono Start key. “F50 P 0 B 0” is displayed on the LCD, and the fuser fan only
operates at the rotating speed of 50%.
(3) Press the Mono Start key. “F0 P 0 B 0” is displayed on the LCD, and all the fans stop.
(4) Press the X key to return the machine to the initial state of the maintenance mode.
■ Location of fans
Fig. 5-21
LCD Parts name Description
F Fuser fan Evacuate hot air of the fuser unit.
P Power fan Evacuate hot air of the low-voltage power supply
PCB unit.
B Blower Intake air to prevent a dirt on the corona wire.
Fuser fan
Power fan
Blower

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