Brother MFC-L8850CDW Service Manual

2-126
Confidential
■ Paper jam in the ADF eject section
< User Check >
- Check whether the document is thinner or thicker than the specifications.
4.11.4 Document becomes wrinkled
< User Check >
- Check whether the document is thinner or thicker than the specifications.
- Check whether the number of loaded documents exceed the specified number.
- Check whether the document does not curl.
- Check whether the document guide matches the document size.
4.11.5 Document size cannot be correctly detected
< User Check >
- Check whether the document is thinner or thicker than the specifications.
- Check whether the number of loaded documents exceed the specified number.
- Check whether the document does not curl.
Step Cause Remedy
1 Foreign object ADF eject
section
Remove the foreign object.
2 First side document scanning
position actuator caught on
some position
Re-assemble the first side document
scanning position actuator.
3 Coming off of exit pinch roller Re-assemble the exit pinch roller.
4 First side document scanning
position sensor failure
Replace the first side document scanning
position sensor PCB ASSY.
5 ADF drive gear damaged Replace the ADF unit.
6 Scratch on document scanner
unit
Replace the document scanner unit.
7 Main PCB failure Replace the main PCB ASSY.
Step Cause Remedy
1 Document separate roller
worn out
Replace the document separate roller ASSY.
2 Document feed roller
worn out Replace the document feed roller ASSY2.
3 ADF drive gear damaged Replace the ADF unit.
Step Cause Remedy
1 First side document scanning
position actuator caught on
some position
Re-assemble the first side document
scanning position actuator.
2 ADF motor failure Replace the ADF motor.
3 First side document scanning
position sensor failure
Replace the first side document scanning
position sensor PCB ASSY.
4 ADF drive gear damaged Replace the ADF unit.
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