Brother MFC-J6920DW Service Manual

Confidential
2-33

Error Code 3F
Carriage motor cannot stop.
 Error Code 40
Casing internal thermistor defective
Casing internal thermistor detects -20 °C or less and 80 °C or more when power is ON.
 Error Code 42
Head voltage fails to be turned OFF.
User Check
- They may occur due to lower surrounding temperature. Use in warmer surrounding
temperature.
Unable to Print 3F LCD
Step Cause Solution
1 Carriage motor harness
connection failure
Reconnect the carriage motor harness.
2 CR encoder strip stained Clean the CR encoder strip.
3 CR encoder strip defective Replace the CR encoder strip.
4 CR encoder sensor defective Replace the carriage PCB ASSY.
5 Carriage motor defective Replace the carriage motor ASSY.
6 Main PCB defective Replace the main PCB ASSY.
Unable to Print 40 LCD
Step Cause Solution
1 Casing internal thermistor
defective
Replace the ink cartridge PCB ASSY.
2 Main PCB defective Replace the main PCB ASSY.
Unable to Print 42 LCD
Step Cause Solution
1 Head flat cable connection
failure
Reconnect the head flat cable.
2 Carriage flat cable connection
failure
Reconnect the carriage flat cable.
3 Carriage PCB defective Replace the carriage PCB ASSY.
4 Head defective Replace the head/carriage unit.
5 Power supply PCB defective Replace the power supply PCB ASSY.
6 Main PCB defective Replace the main PCB ASSY.

Brother MFC-J6920DW Specifications

General

Type	all in one
Tray Capacity	500
Automatic Document Feeder Capacity	35 sheets
Paper Size	11" x 17"
Paper Handling	up to 500 sheets
Color Print Speed	20 pages per minute
Mono Print Speed	22 pages per minute
Print Resolution Mono	up to 6000 x 1200
Print Resolution Color	up to 6000 x 1200
Scanner Type	flatbed
Scan Resolution	up to 2400 x 1200
Copier Resolution Mono	up to 2400 x 1200
Copier Resolution Color	up to 2400 x 1200
Fax Function	yes
Cartridges	lc103bk/c/m/y
Number Of Cartridges	4
Internal Memory	no
Memory Card	yes
Network	wireless
Connectivity	usb
OS Compatibility	pc: windows server 2003, server 2003 r2, server 2008, server 2008 r2, server 2012, xp home, xp professional, vista, 7 or 8, mac: os x v10.6x, 10.7x or 10.8x
Mobile Devices Connection	yes

Weight and Dimensions

Height	21.9 inches
Width	17 inches
Net Weight	36.4 pounds