HP M570dn with poor quality prints in EC2, Central London

Yesterday I attended a HP M570dn printer repair in EC2 with poor print quality on the black colour. This can problem be caused by a number of issues, the first part of the printer to check is the toner as this can be faulty in 2 ways, either it's not releasing toner quick enough or its leaking toner from the cartridge, meaning the cartridge will need replacing and the inside of the machine will need cleaning. On this job it was leaking a cartridge, if this wasn't the case the next step is to change the black drum and then transfer belt.

By Peter M on 18th December, 2018

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