Solved

HP DJ 500 - Printing is crooked on paper

Posted on 1998-02-24
12
399 Views
Last Modified: 2010-04-12
I have tested and checked the paper handling and found that the paper is indeed going through straight. I have also checked the cable (belt) that moves the print head and see nothing out of the ordinary there either.
What happens is that as it prints a page, It consecutively moves the print to the right (viewing the paper in my hand)with each pass of the print head. the final result is that the print is out of place by almost a half an inch per page. Any advice would be greatly appreciated!
0
Comment
Question by:chinman
  • 5
  • 5
  • 2
12 Comments
 
LVL 15

Expert Comment

by:jrhelgeson
Comment Utility
1) Does this happen when printing from both Dos, and windows?
2) What printer driver are you using.

Sorry if that is an insult to your inteligence,

What are the dip-switches set on the printer?

There are 2 sets of 8 dip-switches
bank 1, 1-8 should be down, bank 2, switch 2 up, all others down.

are you printing to this printer via serial, or parallel?

0
 

Author Comment

by:chinman
Comment Utility
I just bought this printer from a guy through an internet auction. He said it was like this... I fugured I could fix it and use it.
It is not even hooked up to a computer yet... It does this when it is running its own test page. I'm assuming it will do exactly the same thing under a computers power....

0
 
LVL 32

Expert Comment

by:jhance
Comment Utility
The DJ500 is quote old.  I've seen more than one of these get ink, dust, paper flakes, or a combination of these built up around the print head end stop (at the right as you face the printer).  The problem is that there is an optical sensor that detects the head reaching the home position.  If this is partially blocked, the controller get confused about where exactly the head is and you get lines aout of wack.  I'd check the mechanism for such buildup.

Another problem with these older units is failure and stretching on the rubber belt that runs the head back and forth.  If it's slipping or stretching, you get the staggered printing as well.
0
 

Author Comment

by:chinman
Comment Utility
I just took the entire "home position" assembly out... You know where the print head parks... Anyway two observations: I can not see any optical sensor and with all these parts cleaned of any residue - It still continues to do the same thing. The belt appears to be very tight and not slipping in anyway.
Please advise.

0
 
LVL 32

Expert Comment

by:jhance
Comment Utility
The sensor itself is on the underside of the head carriage.  The part that moves and takes the cartridge along with it.  There is a small tab that sticks up and interrupts the light beam when the head moves all the way to the left (of the paper).

It could be some type of software problem, but my suspicion is some type of mechanical problem due to the age or the printer.  It is still doesn't look like this is the problem, perhaps someone else can suggest another solution.
0
 
LVL 15

Expert Comment

by:jrhelgeson
Comment Utility
Could you respond to my post?
0
Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

 

Author Comment

by:chinman
Comment Utility
I thought I answered your question correctly in my 1st comment. It is not hooked to any computer as of yet. There for it is not using win or dos. It is printing it's own test page! All dip switches are in the down position.
Thanks

0
 
LVL 15

Expert Comment

by:jrhelgeson
Comment Utility
I appologize.

Have you tried printing from windows?
0
 

Author Comment

by:chinman
Comment Utility
No, because the previous owner indicated that this was a problem he had been experiencing, So I know the problem exists. I just need to determine what is causing it.
Will HP talk to me?
With or without a charge?

DO YOU HAVE ANY OTHER IDEAS?

thanks!

0
 
LVL 15

Expert Comment

by:jrhelgeson
Comment Utility
Call Parts Now! a printer parts company, they could tell you whats wrong.
0
 

Author Comment

by:chinman
Comment Utility
Thanks to everybody who responded to me on this question. Unfortunately, nobody was correct. I wound up discovering that the timing wheel (under but attatched to the motor) had some foreign matter present that was actually causing the logic not to know where the print head was or giving false data.
As suggested by "jhance", there is no such sensor on the underside of the carriage to detect the home position (wrong model I guess) - So your answer is incorrect. I AM ONLY POINTING THIS OUT SO IN CASE THIS QUESTION SHOULD EVER POP UP AGAIN.
Thanks Again!
0
 
LVL 15

Accepted Solution

by:
jrhelgeson earned 50 total points
Comment Utility
A HA!
So that's how it detects the position,  whats the plastic "knob-on-a-spring" thing for?  Who knows, it was HP's first real attempt at an ink jet printer.

While you've got it torn apart, make sure you lubricate the slide bar with a lithium based grease (it's good for the fibre plastic slide bearing/washer things).

Take off the little rubber thing that covers the print head park/rest area, then you can take a toothpick and dig out all of the dried up ink gunk..

Clean the pickup paper rollers w/alcohol.

How much did you pay for it?

That's the only extra things I can suggest to keep that thing working for you.
0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

Causes of paper jams:The following are the main causes of paper jams. Guides:If the guides for the paper are not set correctly they may cause the paper to enter at an angle. You should ensure that the guides are set correctly for the paper type a…
Printers have changed substantially in the last 30 or so years, not just in technical capabilities but in cost and usage as well.  Printers were originally used for interfacing with the operator, not necessarily for printing copy or pictures. In …
It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring. It works on many operating systems, in many languages.
This video gives you a great overview about bandwidth monitoring with SNMP and WMI with our network monitoring solution PRTG Network Monitor (https://www.paessler.com/prtg). If you're looking for how to monitor bandwidth using netflow or packet s…

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now