Brother MFC-L8850CDW Service Manual

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Confidential
■ Error code 050A
The center thermistor or side thermistor of the fuser unit detected some temperature error in
the hardware.
Error code 050B
When the temperature of the center thermistor of the fuser unit is lower than the idle
temperature, the side thermistor of the fuser unit detected a temperature higher than the
specified value.
Error code 050C
When the temperature of the center thermistor of the fuser unit is higher than the idle
temperature, the side thermistor of the fuser unit detected a temperature lower than the
specified value.
< User Check >
- Turn OFF the power switch. After several seconds, turn ON the power again and check that
this error is reset.
Print Unable 05
Turn the power off and then back on again.
Print Unable 05
Turn the power off and then back on again.
Print Unable 05
Turn the power off and then back on again.
Step Cause Remedy
1 Connection failure of the center
or side thermistor harness of the
fuser unit
Reconnect the harness of the center
thermistor or side thermistor of the fuser
unit.
2 Connection failure of the heater
harness of the fuser unit
Reconnect the heater harness of the fuser
unit.
3 Connection failure of the eject
sensor PCB harness
Reconnect the eject sensor PCB harness.
4 Connection failure of the
low-voltage power supply PCB
harness
Reconnect the low-voltage power supply
PCB harness.
5 Eject sensor PCB failure Replace the eject sensor PCB ASSY.
6 Fuser unit failure Replace the fuser unit.
7 Low-voltage power supply PCB
failure
Replace the low-voltage power supply
PCB unit.
8 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