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- DesignJet, Large Format Printers and Digital Press
- Latex 570 persistent error 87:01 "Clean the encoder strip"

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09-16-2020 01:46 PM
HP Latex 570. Maintenance error message appears: "87:01 Clean the encoder strip as described in the use maintenance kit.
The message gives you the option to clean now or clean later. I have cleaned, following the on screen directions. When complete the message will not go away until I select clean later.
I have turned the machine on and off. I turned machine off, unplugged for 20 minutes. Message still comes up. If I select clean later, I can print without issue, but message comes up again.
I went into service menu, and selected the maintenance option through that menu, but that did not resolve the issue.
09-17-2020 05:24 PM
I am sure if I call tech support the first thing they will insist on is replacing parts. But this code is not an error code as if the machine diagnosed that the encoder is bad, but the maintenance reminder. Similar message comes up to oil the rail, and continues to nag until you follow the steps and then it goes away.
This screen comes up when it is time to clean the encoder. You follow the steps and then when you complete it goes away, or at least it should. It doesn't - at the end of the process it just remains. There is no measuring or checking the encoder to see if it is good or bad, such as the Scitex series like the FB700 where you get an actual error because of incorrect encoder count. And if I ignore it, the printer prints fine... it is annoying that it appears after every single print or process that I run.
It seems that my problem must be unique however, because the ONLY result I get for
Encoder Strip" is an ad for a stupid keyboard.
09-18-2020 12:27 AM - edited 09-18-2020 12:39 AM
That's right, technicians usually change the part but most likely the encoder is either too dirty or has passed a large number of cycles. Have you changed SMK1, 2 or 3? Usually when approaching the replace time, then it starts behaving like this until this part is changed.. 🙂 The line sensor of our L570 gave various errors and behaved strangely as soon as SMK3 reached 100% ...