Lexmark C912 Service Manual - Page 144
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5055-xxx No image Possible cause Moist paper LED printhead High voltage unit (HVU) Printer controller board Printhead controller board Action Be sure the printer is not in a damp environment and the paper is not curled or wavy due to moisture. If necessary inform the customer about correct storage. Be sure the LED printhead cable is securely connected to the printhead controller board and LED printhead assembly. If the problem remains, replace the LED printhead. Be sure all the connectors to the high voltage unit are securely connected. If the problem remains, replace the high voltage unit. Be sure all connectors are securely connected to the printer controller board. If the problem remains, replace the printer controller board. If the problem remains, replace the printhead controller board. 2-94 Service Manual
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