Brother MFC-L8850CDW Service Manual

Confidential
3.3 Communications Error Code .................................................................................... 2-35
4. TROUBLESHOOTING .............................................................................2-39
4.1 Error Cause and Remedy......................................................................................... 2-39
4.2 Troubleshooting for Paper Feeding Problems ..........................................................2-87
4.2.1 No paper feeding from paper tray 1................................................................. 2-87
4.2.2 No paper feeding from T2 paper tray unit........................................................ 2-88
4.2.3 No paper feeding from MP tray ....................................................................... 2-89
4.2.4 Multiple sheets of paper are fed ...................................................................... 2-90
4.2.5 Paper becomes wrinkled .................................................................................2-90
4.2.6 Paper is fed at an angle................................................................................... 2-90
4.2.7 Paper curls ...................................................................................................... 2-91
4.2.8 Unable to perform 2-sided printing .................................................................. 2-91
4.2.9 Paper jam ........................................................................................................ 2-92
4.3 Troubleshooting for Image Defects........................................................................... 2-96
4.3.1 Image defect examples ................................................................................... 2-96
4.3.2 Troubleshooting image defect ......................................................................... 2-97
4.4 Troubleshooting for Software Problems ................................................................. 2-114
4.4.1 Unable to receive data................................................................................... 2-114
4.5 Troubleshooting for Network Problems .................................................................. 2-115
4.5.1 Cannot make a print through network connection ......................................... 2-115
4.6 Troubleshooting for Control Panel Problems.......................................................... 2-116
4.6.1 Nothing is displayed on the LCD ................................................................... 2-116
4.6.2 Unable to perform panel operation ................................................................ 2-117
4.6.3 The machine does not enter the ready state when the power is turned ON.. 2-118
4.7 Troubleshooting for Toner Cartridge and Drum Unit Problems............................... 2-119
4.7.1 New toner not detected ................................................................................. 2-119
4.7.2 Toner cartridge not detected.......................................................................... 2-119
4.7.3 Toner replacement message displayed on LCD is not cleared ..................... 2-119
4.7.4 Drum error ..................................................................................................... 2-120
4.7.5 Drum replacement message displayed on LCD is not cleared...................... 2-120
4.8 Troubleshooting for Fuser Unit Problems ............................................................... 2-121
4.8.1 Fuser unit failure............................................................................................ 2-121
4.9 Troubleshooting for Laser Unit Problems ............................................................... 2-121
4.9.1 Laser unit failure ............................................................................................ 2-121
4.10 Troubleshooting for PCB Problems ...................................................................... 2-122
4.10.1 Main PCB failure.......................................................................................... 2-122
4.10.2 Full memory................................................................................................. 2-122
4.10.3 Problem of print restriction/ID authentication............................................... 2-122
4.11 Document Feeding Problems ...............................................................................2-123

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