Designjet 500 has started printing bands on prints NOTHING seems to fix this problem.

[D Hook]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

I sent you a private message, but did not see a confirmation you got it. Let me know if you didn't get it.

Yes, I got it and replied.

Some pix attached. Sorry about the crappy focus. Not the best phone.
If you have questions let me know. The cap has been removed to see the part numbers. the encoder wheel is clean and scratch free.

[D Hook]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

The ones I've changed have just been put on with adhesive.

[Kiran Otter]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

The ones I've changed have just been put on with adhesive.

Yes, they're just glued on.

Kiran

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Yes, I got it and replied.

Some pix attached. Sorry about the crappy focus. Not the best phone.
If you have questions let me know. The cap has been removed to see the part numbers. the encoder wheel is clean and scratch free.

Oh that is great D. Hook, I understand about the pics. Can't wait to install it.

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Yes, they're just glued on.

Kiran

Hmm, Super Glue or regular plastic cement. I have both. Is that some kind of special grease used to lube the gears? Mine are dry as a bone.

[Kiran Otter]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

The disc is like a sticker, you peel the backing off and stick it on.. no glue needed.

The grease is lithium.. don't use a petroleum-based grease, it will melt the plastics. And it only needs a tiny bit on the gears. If there's any left, I'd leave it as is.

Kiran

[D Hook]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Yes, just a sticky-back adhesive like a peel off label.

Good to know about the grease. Been wondering that myself. Be sparing with it.

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

The disc is like a sticker, you peel the backing off and stick it on.. no glue needed.

The grease is lithium.. don't use a petroleum-based grease, it will melt the plastics. And it only needs a tiny bit on the gears. If there's any left, I'd leave it as is.

Kiran

I thought it might be lithium but wanted to make sure first. Richard

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Hi Hiran and D. Hook;

Well, we will wait on the parts to arrive. A friend was over this evening and he suggested that I do a video of the teardown to replace the encoder disc and axis motor. I own a high resolution video camera and studio lights so I could definitely get a 1080p video. Do you guys think I should attempt this task when I begin my second disassembly of the printer? Richard

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Have finished installing the encoder and sensor, and replaced the axis motor assembly, cleaned up the gears etc. I fired it up and now I get a 21:10 error. Guess I have a issue with the ISS unit. So I am going to tear it down and see what I find.

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

ISS unit will be here tomorrow. The old ISS had so much dry ink in it no wonder it failed. I will update tomorrow night.

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Well after replacing the ISS unit fixed the error and the machine is functioning normally. Now I am getting a indication that the black printhead is bad. I had just replaced all the heads a month ago. There might be 20 minutes usage on this set of heads. The printhead says it has a code 34. I can't find anything that explains this error. Also, I purged the ink lines before I turned the machine on after replacing the ISS assembly. Air in the line should have been eliminated. Anybody know a solution besides another printhead?

Richard

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob



Final note:
The encoder and disc were bad causing the streaks. The bad printhead turned out to be two defective ink cartridges. After replacing the black and yellow cartridges all works perfectly. Thanks everyone for your support in fixing this DJ500.

Richard

[blackcat4866]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Final note:
The encoder and disc were bad causing the streaks. The bad printhead turned out to be two defective ink cartridges. After replacing the black and yellow cartridges all works perfectly. Thanks everyone for your support in fixing this DJ500.

Richard

Thanks for posting back. Congratulations.

[RHOPKINS]

Re: Designjet 500 has started printing bands on prints NOTHING seems to fix this prob

Thanks for posting back. Congratulations.

Thanks blackcat for your input on my repair. We live and learn from experience. Talk at you again down the road.