No response to HP laser printer to print, the error indicator - fault maintenance Shenzhen drum manufacturers
failure analysis: the cause of the failure may be the printer paper out, didn't cover good cover, no homemade drum unit components, selenium drum component installation does not reach the designated position or printer has a paper jam.
troubleshooting: first, turning off the power of the printer, check the printer into the carton printing paper, typed found normal installation. Then check the cover of the printer machine and found a closed when the cover can be a pressure sensor cover in place. Then remove printers in the drum unit installed again, boot test troubleshooting, appears to be the printer supplies installation problem.