Oki B431dn User Manual

Troubleshooting > 71
P RINT 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.
SYMPTOM PROBLEM SOLUTION
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.
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.
Toner is low and 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.
Fuzzy print. LED array is dirty. Clean LED array.
Faded print. Toner cartridge is not
correctly installed.
Ton e r low.
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.

Oki B431dn Specifications

General

Color	No
Duplex printing	Yes
Print technology	LED
Time to first page (black, normal)	4.5 s
Print speed (black, normal quality, A4/US Letter)	38 ppm
Processor model	405
Processor family	PowerPC
Maximum internal memory	320 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	54 dB
Total input capacity	250 sheets
Total output capacity	150 sheets
Maximum input capacity	880 sheets
Total number of input trays	1
Maximum number of input trays	2
Multi-Purpose tray input capacity	100 sheets
Printing colors	Black
Maximum duty cycle	80000 pages per month
Recommended duty cycle	5000 - 5000 pages per month
Page description languages	Epson FX, IBM ProPrinter, PCL 5e, PCL 6, PostScript 3
Envelopes sizes	7 3/4, 9, 10, C5, C6, DL
Maximum print size	216 x 356 mm
Paper tray media types	Envelopes, Plain paper
Paper tray media weight	60 - 120 g/m²
Non-ISO print media sizes	Executive (184 x 267mm), Legal (media size), Letter (media size), Statement (140 x 216mm)
ISO A-series sizes (A0...A9)	A4, A5, A6
JIS B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Cabling technology	10/100Base-T(X)
Ethernet LAN data rates	10, 100 Mbit/s
Mobile printing technologies	Not supported
Supported network protocols (IPv4)	ARP, TCP, UDP, LPR, FTP, Telnet, HTTP, BOOTP, DHCP, AutoIP, DNS, DDNS, uPnP, Bonjour, WINS, SSL/TLS, SMTP, SNTP, WSD-Print, LLTD, SLP, NetBIOS, JetDirect, IPX, R-Printer, N-Printer, NCP, SPX, IPX, SAP, RIP, ELAP, AARP, DDP, AEP, NBP, ZIP, RTMP, ATP, PAP, SMB, NetBIOS
Networking features	Fast Ethernet
Compatible operating systems	Windows 2000\\r Windows XP Home\\r Windows XP Professional\\r Windows Server 2003\\r Windows Server 2008\\r Windows Vista\\r Windows 7\\r Linux\\r Mac OS X 10.3.9+
Compliance industry standards	IEEE 802.3, IEEE 802.3u
AC input voltage	230 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	70 W
Power consumption (printing)	550 W
Power consumption (PowerSave)	8 W
Sustainability certificates	ENERGY STAR
Storage temperature (T-T)	-10 - 43 °C
Operating temperature (T-T)	10 - 32 °C
Storage relative humidity (H-H)	10 - 90 %
Operating relative humidity (H-H)	20 - 80 %
Standard interfaces	Parallel, USB 2.0
Display	LCD
Product color	White

Weight and Dimensions

Depth	364 mm
Width	387 mm
Height	244.5 mm