Brother MFC-9420CN Service Manual

Confidential
9-52
[ 4 ] Incorrect printout
When the data is not printed correctly as it is seen on the PC screen, follow the procedures below in
the event of a specific error.
P-1
The machine prints unexpectedly or it prints garbage.
User Check
(1) Check if the printer cable is not too long. It is recommended to use a parallel cable of less
than 2 meters (6.6 feet) in length.
(2) Check that the printer cable is not damaged or broken. Check also that the printer cable is
connected to the correct interface connectors of both the machine and PC.
(3) If an interface switching device is used, remove it and connect the computer directly to the
machine and try again.
(4) Check that the appropriate printer driver is selected as ‘Set as Default’. Check also that the
correct print port is set for the selected printer driver.
(5) Check that the machine is not connected to the same port which is also connected to a mass
storage device or scanner. Remove all other devices and connect the port to the machine
only. Turn off the machine status monitor in the device options tab in the printer driver.
(6) If the print port is set as an ECP port, change it to a normal port.
(7) Try printing the test page.
(8) Try resetting the factory settings.
Possible cause
Step
Check
Result
Remedy
Failure inside
the machine
1 Is it possible to print the
test?
No Identify the error type, and then
refer to the specified section of
this chapter.
NOTE: If the machine prints garbage or incorrect fonts, instruct the user to use the
‘Troubleshooting for machine won’t print’ tool of the self-diagnostics tools.
If the problem cannot be solved, instruct user to use the ‘Diagnostics’ tool described in
the Chapter 7 so that you can get a log file to investigate the cause of the problem.
P-2
Unable to print full pages of a document with the “PRINT OVERRUN” message.
User Check
(1) Press the Black Start key on the control panel to print the data remaining in the machine.
(2) If this does not clear the error, reduce the complexity of your document or reduce the
machine resolution.
(3) Change the following setting in the machine driver and try again. The best combination of
settings below will vary depending on your document.
Graphic Mode / TrueType
TM
mode
NOTE: This problem may appear if the data is too complex. If it is not cleared by taking the
actions above, it will be impossible to print such data under the machine specifications.

Brother MFC-9420CN Specifications

General

Print technology	Laser
Maximum resolution	1200 x 2400 DPI
Economical printing	Yes
Print speed (black, normal quality, A4/US Letter)	31 ppm
Print speed (color, normal quality, A4/US Letter)	8 ppm
Digital sender	No
Number of print cartridges	4
Scanner type	Flatbed scanner
Scanner features	Scan to: e-mail, image, OCR, file
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Copy speed (black, normal quality, A4)	31 cpm
Copy speed (color, normal quality, A4)	8 cpm
Faxing	Color faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Fax speed dialing (max numbers)	200
Total input capacity	750 sheets
Maximum input capacity	250 sheets
Auto document feeder (ADF) input capacity	35 sheets
Maximum internal memory	576 MB
Bundled software	ScanSoft PaperPort Presto! PageManager
I/O ports	IEEE-1284 USB 2.0
Dimensions (WxDxH)	483.5 x 514 x 530 mm
Printer management	BRAdmin Professional, MIB-II
Networking features	10Base-T/100Base-TX
All-in-one functions	Fax, Scan
Color all-in-one functions	copy, fax, print, scan
Compatible operating systems	Windows 98(SE)/ Me/ NT WorkStation 4.0/ 2000 Professional/ XP Mac OS 9.1 - 9.2, Mac OS X 10.2.4+
Sustainability certificates	ENERGY STAR
Power consumption (standby)	85 W
Power consumption (PowerSave)	16 W
Power consumption (average operating)	1090 W
Operating temperature (T-T)	10 - 32 °C
Operating relative humidity (H-H)	20 - 80 %
Market positioning	Business