HP C7769B Service Manual - Page 44

System Error Codes System Error: 85:10 Problem Description: Paper-Axis Encoder error. The Drive Roller Encoder Sensor cannot find the zero position of the Encoder Disk. Corrective Action: Try the following: n Replace the Drive Roller Encoder Sensor ⇒ Page 8-38. n If the Error Code continues, replace the Drive Roller ⇒ Page 886. System Error: 86:01 Problem Description: Carriage-Axis shutdown. Corrective Action: If this error code appeared but was NOT caused by a paper jam, then try the following: n Too much friction in the Slider Rod. Enter the Printer Information utility (⇒ Page 4-26) and check the Scan-Axis usage. If the percentage is close to 100%, then lubricate the Slider Rod. n The Carriage is bumping into the Service Station. If the carriage is stuck at the right hand side of the Printer and cannot be moved out to the center of the Print Platen it is because the Service Station cannot uncap the Printheads. In this case replace the Service Station/Aerosol Fan Assembly ⇒ Page 8-52. n Perform the Carriage Movement test ⇒ Page 4-8. System Error: 86:11 Problem Description: Carriage-Axis shutdown (during the Carriage Movement test). Corrective Action: Refer to Error Code 86:01. 2-18 HP DesignJets 500 and 800 Series Printers Service Manual