System error 21:10 is usually a Service Station failure.
The first thing you could try is "Turn the printer off and allow a few minutes for printer to cool, then turn the printer back on again."
If this does not resolve the error, the Service Station Assembly will most likely need replacing. You can buy this genuine HP part from Rightparts and use your own engineer, or we can replace it on-site in under an hour. Please email for a quotation.
1. Complete our plotter repair on-line booking form
2. Telephone on 01256 895955
3. Send an e-mail to email@example.com
Call 01256 895955 for a fast efficient service and competitive rates.
Maintenance Contracts. For complete peace of mind, a fully resourced hardware maintenance contract will provide an engineer on-site should you experience a fault with your HP plotter. All callout, parts and labour are included in the annual charge.
For general enquiries: firstname.lastname@example.org