Brother MFC-L8850CDW Service Manual

2-64
Confidential
■ Error code 8501
The T1 paper feed sensor detected that the paper tray 1 is open in 2-sided printing or printing
by feeding paper from the T2 paper tray unit. (before the registration of printing in the engine)
Error code 8505
The T1 paper feed sensor detected that the paper tray 1 is open in 2-sided printing or printing
by feeding paper from the T2 paper tray unit. (after the registration of printing in the engine)
< User Check >
- Check if the paper tray 1 is closed correctly.
■ Error code 8903
The back cover sensor detected the open state when 2-sided printing is started.
(before the registration of printing in the engine)
Error code 8904
The back cover sensor detected the open state during 2-sided printing.
(after the registration of printing in the engine)
< User Check >
- Close the back cover.
No Tray
The paper tray cannot be detected, re-install Tray1.
No Tray
The paper tray cannot be detected, re-install Tray1.
Step Cause Remedy
1 T1 paper feed actuator that has
come off or that has been caught
Re-assemble the T1 paper feed actuator.
2 Connection failure of the T1
paper feed sensor PCB harness
Reconnect the T1 paper feed sensor PCB
harness.
3 T1 paper feed sensor failure Replace the T1 paper feed sensor PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.
2-sided Disabled
Close the Back Cover of the Machine.
2-sided Disabled
Close the Back Cover of the Machine.
Step Cause Remedy
1 Connection failure of the back
cover sensor harness
Reconnect the back cover sensor
harness.
2 Back cover sensor installation
failure
Re-assemble the back cover sensor.
3 Breakage of boss that presses
the back cover sensor
Replace the back cover.
4 Back cover sensor failure Replace the back cover sensor ASSY.
5 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