OKI B4400 User Manual

							B4400/B4600 User’s Guide – Troubleshooting > 91
PRINT QUALITY PROBLEMS
Before consulting a service representative regarding a print 
quality problem, check the table below to see if there is a 
solution, or something you might have overlooked.
SYMPTOMPROBLEMSOLUTION
Blank sheets 
printed.Image drum 
cartridge not 
properly installed.Reinstall image drum cartridge.
Empty or missing 
toner cartridge.Install new toner cartridge.
Entire page 
prints faintly.Empty toner 
cartridge. Pages 
get fainter when 
toner is used up.Install new toner cartridge.
LED array is dirty. Clean LED array.
Page has grey 
background.Static electricity, 
generally from dry 
environments, 
causes toner to 
stick to 
background.Change paper to a smoother laser 
bond or use a humidifier.
Page prints all 
black.Hardware problem. Contact service.
Page has 
repetitive 
marks.Damaged image 
drum cartridge 
causes repetitive 
marks every 1.6 
inches (4.06 cm) 
due to surface 
nicks and 
scratches.Generate a cleaning page, 
repetitive marks may be 
temporary.
Oblong area of 
faint print 
appears on each 
page.Drop out caused by 
using paper 
exposed to high 
humidity.Change paper stocks, check paper 
storage environment or use a 
dehumidifier; check toner level.
Vertical white 
streaking or 
faint areas on 
page.To n e r  i s  l o w  a n d  
does not distribute 
properly, or the 
drum is worn out.Replace toner cartridge. Check 
drum and replace the drum, if 
necessary. Contact service.
LED array is dirty. Clean LED array.
Vertical black 
lines.Hardware problem. Contact service.
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							B4400/B4600 User’s Guide – Troubleshooting > 92 Fuzzy print. LED array is dirty. Clean LED array.
Distorted print. Paper path, lamp 
assembly, or fusing 
unit problem.Generate cleaning page.
Contact service.
Faded print. Toner cartridge is 
not correctly 
installed.
To n e r  l o w .Install toner cartridge correctly.
Replace toner cartridge.
Smeared or 
blotched print.Dirty rollers; toner 
dropped inside 
printer or image 
drum problem.Replace image drum and toner.
Contact service.
Printed page is 
light/blurred.Is toner low? Replace toner cartridge.
Is paper meant for 
laser printers?Use recommended paper.
LED array is dirty. Clean LED array.
Bold characters 
and dark lines 
are smeared.Toner is low. Install new toner cartridge.
Print is darker 
than usual.Darkness setting is 
too high.Change darkness setting.
Pages curl 
excessively.Printing on wrong 
side of paper.Turn paper over in tray. (Note 
arrow on paper package). Install 
paper print side down in tray.
Moisture in paper. 
Improper storage.Avoid storing paper in areas of 
excessive temperature and 
humidity. Store paper in protective 
wrapping.
High  humidity. Recommended operating humidity: 
20-80%
SYMPTOMPROBLEMSOLUTION
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							B4400/B4600 User’s Guide – Troubleshooting > 93
SOFTWARE PROBLEMS
Your software (operating environment, applications and printer 
drivers) controls the printing process. Make sure you have 
selected the right driver for use with your printer. See your 
software documentation for more information.
HARDWARE PROBLEMS
SYMPTOMPROBLEMSOLUTION
Printing is 
garbled.Incorrect driver is 
installed.Install an appropriate driver.
Printer’s output 
is below rated 
speed.Much of the 
printing delays will 
be caused by your 
application. 
Sometimes purely 
text documents will 
print slowly 
depending on the 
selected fonts and 
how they are 
transferred to the 
printer.For maximum speed, use text in 
your document and use a printer 
resident font.
Size of top 
margin 
increases with 
each page 
printed.Creeping text. 
Number of lines per 
page in software is 
not equal to 
number of lines per 
page of printer.Many software packages assume 
66 lines per page, but your 
printer’s default is 64. Adjust 
software accordingly, or set LINES 
Per PAGE in the soft control panel 
to equal lines per page in your 
software.
SYMPTOMPROBLEMSOLUTION
Graphic image 
prints partly on 
one page, partly 
on the next.Insufficient printer 
memory for this 
image at this 
resolution.Change the resolution, reduce the 
image size, or install more memory 
in your printer.
When you try to 
print nothing 
happens, but 
printer indicates 
it is ready to 
receive data.Configuration error. Check cable connection. If more 
than one printer is available, make 
sure your printer has been 
selected.
Garbage prints. Incorrect cable 
configuration. Also, 
see Software 
Problems.Check cable configuration, 
continuity, and length.
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							B4400/B4600 User’s Guide – Troubleshooting > 94 Printer freezes 
or displays error 
message when 
computer is 
rebooted.Booting the 
computer while the 
printer is on can 
cause a 
communications 
error.Turn printer off before rebooting 
computer.
Odours. Gases are given off 
by forms or 
adhesives passing 
through the hot 
fusing unit.Make sure the forms you use can 
withstand heating, and provide 
adequate ventilation.
Printer is on but 
must warm up 
before a job is 
printed.Power Save mode is 
set on to conserve 
energy. The fuser 
must heat up 
before you can 
begin printing the 
next job.To eliminate warm up delay, change 
Power Save setting
SYMPTOMPROBLEMSOLUTION
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							B4400/B4600 User’s Guide – Installing options > 95
INSTALLING OPTIONS
The following options are available to extend the performance of 
your printer:
>10/100 BASE-TX Network Interface Card: to make the 
B4400 and B4600 network compatible
>16, 32, 64, 128, 256MB RAM DIMM: to extend the main 
memory of your printer and speed up the processing of 
large files
>RS232C Card: to provide serial interface capability for the 
B4400 and B4600
>Second paper tray: to increase your printer’s paper 
handling capacity by 500 sheets (80g/m²)
>Multi Purpose Tray: to extend the range of media your 
printer can accommodate (capacity 100 sheets (80g/m²) 
or 50 envelopes)
>One of the following can be added:
(a) 8MB Flash DIMM: to allow the storage of additional 
fonts or bar codes for the B4400, B4400n, B4600, 
B4600n
(b) 16MB Flash DIMM: to allow the storage of additional 
fonts or bar codes for the B4400, B4400n, B4600, 
B4600n
(c) PostScript PS level 3 DIMM: to add PostScript 
emulation to the B4600 or B4600n. Cannot be added 
in conjunction with extra flash memory. 
(d) The B4600 PS option is supplied as 2 DIMMs: a PS 
DIMM and a 16MB RAM DIMM. When fitted into a 
basic B4600 or B4600n (i.e. one with no memory 
upgrade already fitted) the PS DIMM will expand into 
the 16MB RAM DIMM in order to work, and the 
amount of memory available for general operation of 
the printer will therefore not change. It will remain 
at 16MB, which is the printers base memory.
(e) If you require to install a PS upgrade into a B4600 or 
B4600n which already has a memory upgrade 
installed, discard the 16MB RAM DIMM which ships 
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							B4400/B4600 User’s Guide – Installing options > 96
with the PS option and install only the PS DIMM. The 
result will be that the amount of overall memory 
available to the printer will decrease by 16MB as the 
PS code expands into 16MB of RAM currently 
installed. For example, a user who already has 
128MB installed (total memory is therefore 
128+16=144MB) will fit only the PS DIMM and will 
then have 128MB of RAM left for printing.
INSTALLATION PROCEDURE
To install any of the above options, follow the detailed installation 
sheet that accompanies the option.
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							B4400/B4600 User’s Guide – Specifications > 97
SPECIFICATIONS
GENERAL
A summary of the basic characteristics of your printer appears in 
the table below:
ITEMSPECIFICATION
Dimensions B4400 (N22105B): 355mm x 395mm x 200mm (W x D x H)
B4600 (N22106B): 355mm x 395mm x 215mm (W x D x H)
Weight 9 kg approximately
Printing 
methodElectro-photographic printing using LEDs as light source
Print colour Monochrome
Print speed 26 pages per minute maximum
Resolution 1200 x 600 dots per inch
Emulations PCL6, PCL5e, PCLXL, Epson FX, IBM ProPrinter, Mac OS9, Mac 
OS X for B4400, B4400n, B4600, B4600n
PCL6, PCL5e, Epson FX, IBM ProPrinter, Mac OS9, Mac OS X, 
PS for B4600PS, B4600nPS
Interfaces Parallel port in compliance with IEEE 1284-1994 standard
USB 2.0 full speed
100BASE-TX/10Base-T for B4400n, B4600n, B4600nPS
Optional RS232C Serial interface 
Processor 200 MHz PowerPC
Memory 16 MB expandible to 272MB
Paper  sizes A4, A5, A6, B5, Letter, Legal 13, Legal 14, Executive, Custom, 
Envelopes (5 types)
Paper  feed Automatic feeding via paper trays (including optional tray and 
optional Multi Purpose Tray)
Manual feeding of single sheets
Paper feed 
capacity
at 80g/m²Tray 1: 250 sheets 
Optional Tray 2: 500 sheets
Optional Multi-purpose feeder: 100 sheets
Paper output Face up, face down depending on paper size, type and 
thickness
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							B4400/B4600 User’s Guide – Specifications > 98 Power 
consumptionTypical: 400W
Idle: 70W
Power save mode: 7-10W
Paper output 
capacity at 
80g/m²Face up: 50 sheets
Face down: 150 sheets
Monthly duty 
cycle30,000 pages
Consumables Toner cartridge, Image drum
Power cable Approximately 1.8 m max. length (not provided)
Noise level Operation: 53 dB(A) 
Standby mode: 30dB(A)
Power saving mode: Background level
Environmental 
conditionsOperation: 10 - 32°C, 20% - 80% RH, 
Storage: 14 - 110°C, 10% - 90% RH
When the printer is stored, it should be in its original 
packaging, with no moisture formation.
ITEMSPECIFICATION
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							B4400/B4600 User’s Guide – Specifications > 99
PAPER AND TRAY INFORMATION
Feed and ejection methods vary depending on the type, size and 
thickness of medium used. Use the chart below and the notes/
symbols/terms on the following page for initial guidance. (Minor 
variations to settings may be necessary depending on user setup 
and environmental conditions.) 
FEED
CASSETTEEJECTION 
METHOD
PAPER 
TYPESIZE WEIGHT T1 T2 MPF MF FU FD
Plain 
paperA4
A5
B5
Letter
ExecutiveL, ML, M o o o o o o
MH, H x x o o o x
Legal 
(13)
Legal 
(14)L, ML, M o o x o o o
MH, H x x x o o x
A6 L, ML, M o x o o o x
MH, H x x o o o x
Custom
W: 90 – 
216
L: 148 – 
356L, ML, M o o o o o o
MH, H x x o o o x
Env-
elopesCom-9
Com-10
DL
C5
Monarch
Custom
W: 90 – 
216
L: 148 – 
356–xxooox
Labels A4
Letter–xxooox
Tr a n s p -
arenciesA4
Letter–xxooox
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							B4400/B4600 User’s Guide – Specifications > 100
NOTES/SYMBOLS/TERMS
Notes:
1.When an optional second paper tray is used, the original 
tray is referred to as Tray 1 and the optional tray as Tray 
2.
2.It is not possible to use custom paper sizes with the PS 
emulation driver.
3.Tray 2 can accommodate paper with width of 148 to 
216mm and length of 210 to 316mm.
4.Paper smaller than A5 (i.e. less than 210mm long) should 
be ejected face up. 
SYMBOL/
TERMMEANING
T1 Paper Tray 1
T2 Paper Tray 2 (optional)
MPF Multi Purpose Tray (optional)
MF Manual Feed Tray
FU Face Up printing from the rear of the printer
FD Face Down printing from the top of the printer
W, L Width, Length in mm
L Light paper weight: 59 - 66g/m²
ML Medium Light paper weight: 67 - 73g/m²
M Medium paper weight: 74 - 88g/m²
MH Medium Heavy paper weight: 89 - 104g/m²
H Heavy paper weight: 105 - 122g/m²
oCan be used
x Cannot be used
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