Brother MFC-L8850CDW Service Manual

Confidential
7. IF YOU REPLACE THE LASER UNIT.....................................................4-12
7.1 Continuous Adjustments of Density and Registration Sensor
(Function code 73).................................................................................................... 4-12
7.2 Counter Reset of Laser Unit (Reset Counters for Parts (Function code 88)) ........... 4-12
8. IF YOU REPLACE THE FIRST SIDE CIS UNIT,
DOCUMENT SCANNER UNIT .................................................................4-13
8.1 Acquisition of White Level Data (Function code 55)................................................. 4-13
8.2 Scanning and Printing Check ................................................................................... 4-13
9. IF YOU REPLACE THE ADF UNIT, SECOND SIDE CIS UNIT...............4-14
9.1 Acquisition of White Level Data (Function code 55)
(Duplex Scanning Model Only)................................................................................. 4-14
9.2 Scanning and Printing Check ................................................................................... 4-14
10. IF YOU REPLACE THE FUSER UNIT/PF KIT 1, 2, AND MP ...............4-15
10.1 Counter Reset of Fuser Unit or PF Kit 1, 2, and MP
(Reset Counters for Parts (Function code 88))....................................................... 4-15
CHAPTER 5 SERVICE FUNCTIONS
1. MAINTENANCE MODE..............................................................................5-1
1.1 How to Enter the Maintenance Mode ......................................................................... 5-1
1.1.1 How to Enter the Maintenance Mode Exclusive to Service Personnel.............. 5-1
1.1.2 How to Enter the End User-accessible Maintenance Mode .............................. 5-2
1.2 List of Maintenance-mode Functions.......................................................................... 5-3
1.3 Detailed Description of Maintenance-mode Functions ............................................... 5-5
1.3.1 EEPROM parameter initialization (Function code 01, 91) ................................. 5-5
1.3.2 Printout of scanning compensation data (Function code 05)............................. 5-6
1.3.3 ADF performance test (Function code 08) ........................................................ 5-8
1.3.4 Monochrome image quality test pattern (Function code 09).............................. 5-9
1.3.5 Worker switch (WSW) setting and printout (Function code 10, 11) ................. 5-10
1.3.6 Operational check of LCD (Function code 12) ................................................ 5-14
1.3.7 Operational check of control panel key (Function code 13)............................. 5-15
1.3.8 Software version check (Function code 25)..................................................... 5-16
1.3.9 “One Push Demo” setting (Function code 28) .................................................5-17
1.3.10 Operational check of sensors (Function code 32) ......................................... 5-18
1.3.11 LAN connection status display (Function code 33)........................................ 5-22
1.3.12 EEPROM Dump Print (Function code 40) ..................................................... 5-23
1.3.13 Backup of machine information (Function code 41) ...................................... 5-24
1.3.14 PC print function setting (Function code 43) ................................................. 5-26

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