Brother MFC-L8850CDW Service Manual

Confidential
CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB ASSY................................................4-1
1.1 Installing the Firmware (Sub Firmware, Panel Firmware, Main Firmware,
and High-voltage Firmware) ....................................................................................... 4-2
1.1.1 Checking firmware version ................................................................................ 4-2
1.1.2 Installing the firmware........................................................................................ 4-3
1.2 Initializing the EEPROM of the Main PCB ASSY (Function code 01) ........................ 4-4
1.3 Setting the Serial Number (Function code 80) ........................................................... 4-5
1.4 Restore Machine Information (Function code 41) ...................................................... 4-5
1.5 Setting by Country (Function code 74) .......................................................................4-5
1.6 Motor Reset (Function code 57) ................................................................................. 4-5
1.7 Continuous Adjustments of Density and Registration Sensor (Function code 73) ..... 4-6
1.8 Acquisition of White Level Data (Function code 55)................................................... 4-6
1.9 Adjustment of Touch Panel (Function code 61).......................................................... 4-6
1.10 Restoration of States at Factory Shipment ............................................................... 4-6
2. IF YOU REPLACE THE REGISTRATION MARK SENSOR UNIT ............4-7
2.1 Continuous Adjustments of Density and Registration Sensor (Function code 73) ..... 4-7
3. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB UNIT ..4-8
3.1 Reset of Irregular Power Supply Detection Counter of
Low-Voltage Power Supply PCB (Reset Counters for Parts (Function code 88)) ...... 4-8
4. IF YOU REPLACE THE PROCESS DRIVE UNIT......................................4-9
4.1 Motor Reset (Function code 57) ................................................................................. 4-9
5. IF YOU REPLACE THE HIGH-VOLTAGE POWER SUPPLY
PCB ASSY................................................................................................4-10
5.1 Installing the Firmware.............................................................................................. 4-10
5.1.1 Checking firmware version .............................................................................. 4-10
5.1.2 Installing the firmware...................................................................................... 4-10
5.2 Continuous Adjustments of Density and Registration Sensor
(Function code 73).................................................................................................... 4-10
6. IF YOU REPLACE THE LCD PANEL ASSY OR
PANEL CONTROL PCB ASSY................................................................4-11
6.1 Installing the Firmware.............................................................................................. 4-11
6.1.1 Checking firmware version .............................................................................. 4-11
6.1.2 Installing the firmware...................................................................................... 4-11
6.2 Adjustment of Touch Panel (Function code 61)........................................................ 4-11
6.3 Operational Check of LCD (Function code 12)......................................................... 4-11

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