[Misc] HP 9000dn

[LNorris]

I have a HP 9000dn that stays in a "warming up" state. i can clear it sometimes (not sure what i did). it will run until they get a paper jam. then it goes back into this state. the only things i can find in the manual or online is it is either a fuser issue (i have put a maintenance kit in) or a lvps.

i brought it to the shop and it does the same thing. so its not the ac power.

any ideas or suggestions before i go the lvps?

thanks

[blackcat4866]

I'm not sure if this is the same thing, but I have a vague recollection of a previous post on the HP LJ9050 that had unresolved jamming issues. It turned out to be a problem with the upper fuser roller bias contact. Maybe prntrfxr will remember...

Sorry about lack of details. I don't have much of a memory. =^..^=

HP 9000n

I can't believe I just had this problem today!! Here's how I solved it:

Symptom - False “13.20 Error”:
After replacing HVPS – 13.20 error occurs
No jam present after checking all sensors (above) – 13.20 error occurs/remains

Problem:
HP has a built in circuit called “the wrapping jam detection circuit”. This circuit uses an arm on a solenoid that makes contact with the lower pressure roller on the fuser roller. The other end of the circuit includes metal contacts under the right side of the HVPS. It compares values from the HVPS and compares them with values from the lower pressure roller. If they are different the circuit signals the DC Controller to stop the printer and display a false “13.20 error”. (For more info check pg 96 in Service Manual).

Resolution:
1.)Check the HVPS Contacts of the wrapping jam circuit. To check remove HVPS. Under where the HVPS was to the right as you face the back of the printer in between the feed-drive assembly and the formatter cage (you can see it in Figure 101 on page 155 of the Service Manual), there are 2 large metal contacts. Make sure they are not bent, they should be parallel to each other.
2.)The fuser part of the circuit (wrapping jam detect solenoid – runs on +24Vdc) may be bad and may have blown the DC Controller. REMOVE and replace along with the DC Controller to prevent the fuser from blowing the DC Controller.
3.)Early versions of the DC Controller had very narrow tolerance for comparison measurements. Later versions have corrected this problem. To check the DC Controller version, print a configuration page and look at the "printer number" (a two-digit code ranging from 15 to 1C). If the second character is a number (5-9), the printer has an older DC Controller, which will be more likely to cause false 13.20 errors. On newer versions, the second character will be a letter (A, B, or C). Replace DC Controller.

This is what I was thinking of. Please credit prntrfxr. =^..^=

[JustManuals]

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Paul@justmanuals.com

[prntrfxr]

Remove the network card and power it up. See if the problem goes away. If it does, you probably got a bad network card.