Top 20 OKI C5800dn Laser Printer - Page 9 Questions & Answers

171 is Upper Thermistor, State: Open

Check the heater connector and the thermistor connector to make sure they are seated properly. If OK you probably need to replace the fuser.

OKI Office... | 1,103 views | 0 helpful votes

Check the window on the side of the drum where the sensor sits. It is on the right side of the drum and can be pushed open with a Q tip it is a small black window.

OKI Office... | 613 views | 0 helpful votes

Go to Start >> Control Panel >> Printers

Select your printer, right click and go to >> Properties then go to >> Ports
Check which port is using your printer and correct (LPT1 or USB Virtual Port)

OKI Office... | 1,588 views | 2 helpful votes

Yes u need to replace it plus u need to cleen the heads.
that is how I fixed mine

OKI Office... | 728 views | 0 helpful votes

You have a fatal error, what kind of error is specified by led combination of PRINT QUALITY and CHARACTER PITCH.

OKI Office... | 828 views | 0 helpful votes

try to check the drum first!!!
clean it with the dry tissue?
there a lifespan of the drum
i have the same problem with that.
my drum capacity is only 30,000 copies
so then i replaced it! and works fine now

so try to replaced the drum it might on it capacity
or clean it

try to email me [email protected]

OKI Office... | 966 views | 1 helpful votes

They are different and can not be interchanged

C7200 work with C7200/C7400
C7300 work with C7350/C7300/C7550/C7500

If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

I’m happy to assist further over the phone at

OKI Office... | 170 views | 1 helpful votes

either you've installed the wrong toner cartridge or it's not seated properly

OKI Office... | 412 views | 1 helpful votes

ok..turn it off..and remove connection to printer..

let it sit for 3 min

turn power back on no connection to computer...

report back with light display please..

OKI Office... | 290 views | 0 helpful votes

Error 002 is an cpu exception fault caused by a defective controllerboard (CU board)
When replacing this board remember to replace the eeprom on the controller from the old board to the new one.

OKI Office... | 365 views | 1 helpful votes

Found this at

1. Turn machine on while pushing and holding the TWO up/down menu buttons at same time.
2. Menu window will show "OKI USER"
3. Scroll to " Engine Dialog Mode" is indicated. Push Enter button.
4. "Diagnostic Mode xx.xx.xx S-Mode is indicated.
5. Scroll to "NV-Ram initial" is indicated. Push ENTER.
6. Window shows "NV-Ram- Initial Table 1".
7. Push ONLINE and ENTER Buttons simultaneously and HOLD for 10 seconds after you see "Executing Reset" appear in menu window.
8. Restart printer.

All toner, drum, fuser and transfer figures return to 100%.

Worked for me when I had the same error. Hope it helps.

OKI Office... | 1,511 views | 3 helpful votes

Disconnected sensor at paper exit

OKI Office... | 342 views | 0 helpful votes


Check the cartridge...

Thank you

OKI Office... | 60 views | 0 helpful votes

Hi grf, try updating your printer drivers:

Create a new folder on your desktop and name it newhpdrivers(substitute your manufacturer in new name). Un-intall printer and printer software completely. Go to manufacturers website and navigate to their drivers/downloads or support menu. Select your model, choose the relevant software and download to the new folder you created on your desktop(watch for the light yellow bar at the top of window viewing pane, click on this and choose – download file - . Power down your computer. Reconnect the printer to the computer and turn printer on. Power on pc. Windows will detect new hardware and ask if you have the manufacturers install cd or a location to check for install files. Direct the wizard to your new software, follow the rest of the setup instructions and your done.

Rate Me Please! Hate it? Rate it…Like it, try it!
Thank you for submitting your question to
Would you please take a moment and show your appreciation by rating my performance.
All ratings and comments are welcome. Thank you - anaanymous

OKI Office... | 118 views | 0 helpful votes

check the roller clean it with little alcohol and then try

OKI Office... | 31 views | 0 helpful votes

Hello may i ask if you received my messages?

OKI Office... | 163 views | 0 helpful votes

Go to control panel, double click printer, double click your printer and all the jobs in queue will show up. Delete some of them

OKI Office... | 72 views | 0 helpful votes

If you need replacement here you find some offers:

Okidata Fuser Unit 120 for C9300 C9500 ... $189.72 - pcRUSH OKI 41946101 Fuser Unit 120V ... $160.83 - PROVANTAGE Okidata C9300, C9500 Fuser Unit ...

OKI Office... | 406 views | 0 helpful votes

Can You Be More Specific?

OKI Office... | 15 views | 0 helpful votes

Not finding what you are looking for?
OKI C5800dn Laser Printer Logo

17 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

Top OKI Office Equipment & Supplies Experts

Alvin Barnabas
Alvin Barnabas

Level 2 Expert

134 Answers

Timothy Van Der...

Level 2 Expert

152 Answers


Level 3 Expert

4372 Answers

Are you an OKI Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular


  • C OKI

Most Popular Question

oki c5800 printer sensor malfunction

  • Office Equipment & Supplies