OKI C8800dn User Manual

							
C8800 User’s Guide141
        Jams 4.eps   
3.Open the front cover.
4. Remove any jammed sheets.
5. Close the front cover. 
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C8800 User’s Guide142
Print Quality Problems ___________________
Blurred print (letter edges)
     
Blurred print (one  side of page)
     
Fading (in patches) 
     
Possible cause Remedy
LED is dirty. Clean LED with lens cleaner or soft tissue.
Cannot print desired 
color because toner is 
low. Replace toner cartridge.  
See “Replace a Toner 
Cartridge” on page 71 .
Possible cause Remedy
To p  c o v e r  i s  n o t  
properly closed. Press the cover release latch and open, then close, the 
cover.
One or more of the 
toner cartridges is not 
seated properly. Open the top cover and check to be sure that each 
toner cartridge is fully seated and that each toner 
cartridge lock lever is pushed all the way back.
Possible cause Remedy
The paper is moist. Store paper within
 specified temperature and humidity 
levels.   See “Specifications” on page 122 .
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C8800 User’s Guide143
Fading (Vertical)  
     
Light Print
     
Possible cause Remedy
LED head is dirty. Clean LED head  with lens cleaner or soft tissue.
Toner is low. Change toner cartridge.
Paper is unsuitable for 
printer. Use recommended paper.
Possible cause Remedy
The toner cartridge is 
incorrectly installed.Reinstall the toner cartridge.  
See “Replace a Toner 
Cartridge” on page 71 .
Toner is low. Change toner cartridge.   See “Replace a Toner 
Cartridge” on page 71 .
The paper is moist. Store paper within  specified temperature and humidity 
levels.   See “Specifications” on page 122 .
Paper is unsuitable for 
printer. Use recommended paper.  
See “Paper (Print Media)” on 
page 11 .
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C8800 User’s Guide144
Lines, Black (Vertical)
     
Lines, White (Vertical)
     
Possible cause Remedy
Image drum is 
damaged. Replace image drum.  
See “Replace an Image Drum” on 
page 76 .
Toner is low. Change toner cartridge.   See “Replace a Toner Cartridge” on 
page 71 .
Periodic black 
lateral lines or 
spots. If the lines or spots occur at intervals of approximately
44 to 94 mm
 
The green surface of the image drum is damaged or dirty. If 
damaged, replace the image drum cartridge.   See “Replace an 
Image Drum” on page 76 . 
If dirty, wipe the image drum gently with soft tissue. 
If this does not work, replace the image drum.   See “Replace an 
Image Drum” on page 76 .
113 mm  
The fuser roller is damaged. Change the fuser.   See “Replace 
the Fuser” on page 79 .
The image drum 
has been exposed 
to light. Remove the image drum from the printer and store it in a dark 
place for several hours. If this does not work, replace the image 
drum.  
See “Replace an Image Drum” on page 76 .
Remedy
Clean LED head with lens cleaner or soft tissue.
Change toner cartridge.
Change image drum.
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C8800 User’s Guide145
Shading on unprinted sections
     
Toner rubs off when  you rub the printed 
surface.
      
Ultra Heavy
If the Ultra Heavy setting does  not give proper toner fusion, 
you can try the Label settings. 
Possible cause Remedy
Paper has been affected 
by static electricity. Store paper within specified temperature and humidity 
levels.  
See “Specifications” on page 122 .
Paper is too thick. Use recommended paper.   See “Paper (Print Media)” on 
page 11 .
Toner is low. Replace toner cartridge.   See “Replace a Toner 
Cartridge” on page 71 .
Possible cause Remedy
Media Weight and Media 
Type settings may not be 
appropriate. Set the value of media weight in the menu to the 
next heaviest one (MEDIA MENU 
→ YYY MEDIA 
WEIGHT).
Packing materials were left 
on the fuser when it was 
installed. Careful!
 Fuser my be  HOT!
Open the top cover and check  to be sure that all the 
packing materials were removed from the fuser.  See 
“Replace the Fuser” on page 79 .
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C8800 User’s Guide146
USB Proble ms __________________________
Cannot configure for USB connection
NOTE:  Windows NT 4.0 does not support USB. Windows 98 
upgraded from Windows 95 may not support USB.
      
      
Possible cause  Remedy
USB cable does not meet 
specifications. Use USB cable to specification Ver.2.0.
Interface is disabled.  Check that USB in terface is set to Enable in the menu 
(USB MENU  → USB  → ENABLE).
Configuration procedure was 
not correctly followed or 
cancelled. Configure again from the beginning.
USB cable is disconnected or 
faulty. Reconnect or try another cable.
A USB hub is being used. The printer cannot be used with a USB hub. Connect  the printer and computer directly.
The USB cable is installed in 
the Ethernet port. Make sure the USB cable is plugged into the USB port 
(1) on the printer:
  
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C8800 User’s Guide147
Cannot print
•PRNUSBx write error is displayed.
     
Possible cause Remedy
Interface is disabled. In the printer me nu settings, enable the USB interface 
(USB MENU  → USB  → ENABLE).
Printer is switched OFF. Turn on the printer.
Printer interface cable is 
disconnected. Reconnect the printer interface cable.
A converter, buffer, 
extension cable or USB 
hub is being used. Test by connecting the printer and computer directly.
Printer driver output 
port is incorrect. Set correct output port to which the printer interface 
cable is connected.
Printer is not selected in 
the printer driver. Select the printer or set to default printer.
Incorrect printer driver 
is being used. Delete this printer driver 
and install correct printer 
driver from the CD supplied with your printer.
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C8800 User’s Guide148
Application er ror ________________________
or
General Protecti on Fault __________________
Possible cause Remedy
Application is not 
suitable for the 
operating system. Upgrade the application.
Memory is insufficient 
for number of 
applications running. Close all other applications.
Print file is corrupted. Correct or recreate the file.
Memory is insufficient 
for application. Increase computer’s memory.
Printer driver is 
incorrectly configured. Correctly configure printer driver.
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C8800 User’s Guide149
Paper Size Change  Request ________________
Printer does not go online _________________
Printer makes a st range noise______________
Possible cause Remedy
Paper loaded in tray is 
different size from that 
formatted in software 
application. Either change paper in tray to match size formatted in 
application and press ON-LINE to continue, or continue 
printing on existing paper by pressing ON-LINE.
Possible cause Remedy
Bad connection Switch off the printe
r and disconnect the power cable. 
Reconnect the power cable and switch the printer on. If 
this does not clear the fault, call for service.
Possible cause Remedy
The printer is not horizontal. Place  the printer on a stable, level surface.
There are scraps of paper or 
other foreign matter inside 
the printer. Check the inside of the printer and remove any such 
objects.
The top cover is not firmly 
shut. Press the left and right sides of the top cover.
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C8800 User’s Guide150
Printer takes a long time  to start printing _____
Printing cancels _________________________
Possible cause Remedy
The printer has to warm 
up returning from power 
save mode. In the printer menu settings, set power save to a 
higher value to increase the length of time before 
entering power save mode (SYS CONFIG 
MENU 
→  POW SAVE TIME).
The image drum carries 
out a cleaning process to 
ensure print quality, which 
takes time. Wait until this process has been completed.
The fuser unit adjusts 
temperature, which takes 
time. Wait until this process has been completed.
The printer is processing 
data from another 
interface. Wait until this data is processed.
Possible cause Remedy
The printer interface cable 
is faulty.
Replace the printer interface cable.
The time out setting is too 
short. Reset time out in the menu to a higher value (SYS 
CONFIG MENU 
→ WAIT TIMEOUT).
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