Brother MFC-J6935DW Service Manual

Confidential
2-27
■ Error Code 1700
Recording paper size error (duplex-printing/duplex-copying)
- Paper width is narrower than 95.5 mm (detection by paper width sensor)
- Paper length is longer than 461.8 mm (detection by registration sensor)
- Paper length is shorter than 143.5 mm (detection by registration sensor)
< User Check >
- Check whether the recording paper being used is within the specification.
- Check that dark recording paper is not used.
■ Error Code 1800
Paper jam during duplex-printing
- Registration sensor does not detect paper feed within specified pulse numbers in
the second side paper re-feed.
< User Check >
- Remove the jammed paper.
- Check whether the recording paper being used is within the specification.
- Check that recording paper are not curled, wrinkled or wet.
- Check that Output paper tray is set correctly (not inserted halfway)
.
Step Cause Solution
1 CR encoder strip stained Clean the CR encoder strip.
2 PF encoder disk stained Clean the PF encoder disk and flushing guide.
(refer to "Precautions for Troubleshooting and/
or Disassembly/Assembly")
3 Registration actuator caught
on the surrounding parts
Set the registration actuator into place.
4 Switchback actuator caught on
the surrounding parts
Set the switchback frame ASSY into place.
5 CR encoder strip defective Replace the CR encoder strip.
6 PF encoder disk defective Replace the PF encoder disk.
7 Registration sensor defective Replace the registration sensor PCB.
8 Paper width sensor defective Replace the carriage PCB ASSY.
9 Paper feed motor defective Replace the paper feed motor.
10 Main PCB defective Replace the main PCB.
Step Cause Solution
1 Foreign materials in the duplex
print paper path
Remove foreign materials.
2 Registration actuator caught
on the surrounding parts
Set the registration actuator into place.
3 Switchback actuator caught on
the surrounding parts
Set the switchback frame ASSY into place.
4 Registration sensor defective Replace the registration sensor PCB.
5 Switchback roller defective Replace the switchback roller.
6 Drive frame ASSY defective Replace the maintenance unit.
7 Main PCB defective Replace the main PCB.

Brother MFC-J6935DW Specifications

General

Type	all in one, copier, fax, scanner
Color	gray
Touch Screen	yes
Display Size	3.7 inches
Tray Capacity	500
Output Tray Capacity	100
Automatic Document Feeder Capacity	50 sheets
Paper Size	letter, ledger, executive, envelope (com-10, dl envelope, monarch), a3, a4, a5, a6 photo 4"x6", 3.5"x5", 5"x7", 5"x8", manual by-pass: 3.5" x 5" to 11" x 17"
Printing Method	color
Color Print Speed	20 pages per minute
Mono Print Speed	22 pages per minute
First Page Print Time	6 seconds
Print Resolution Mono	up to 4800 x 1200
Print Resolution Color	up to 4800 x 1200
Two-Sided Printing	no
Maximum Number of Pages Per Month	up to 30, 000
Photo Printing	yes
Scanner Type	flatbed
Scan Resolution	up to 19200 x 19200
Duplex Scan	yes
Fax Function	yes
Cartridges	lc3029bk/c/m/y inkvestment super high-yield cartridges
Number Of Cartridges	4
Number of Ink Tanks	0
Internal Memory	yes
Memory Card	no
Network	wired, wireless
Connectivity	apple airprint, brother iprint&scan, ethernet, google cloud print, mopria print service, nfc, usb, wi-fi direct
OS Compatibility	windows 10, 8.1, 8, 7, vista; windows server 2012, 2012 r2, 2008, 2008 r2; os x v 10.11.x, 10.10.x, 10.9.5.x; hdd space for drivers and apps
Mobile Devices Connection	yes

Weight and Dimensions

Depth	22.7 inches
Height	14.7 inches
Width	22.6 inches
Net Weight	51.8 pounds