HP 1050c Service Manual - Page 122

Service Calibrations NOTE 1. Accuracy Calibration The purpose of this Service Calibration is to calibrate the nominal advance of the media. This calibration is necessary to control the exact movement of the media in order to avoid print quality problems like banding. Perform the Service Accuracy Calibration whenever: n Banding is detected in prints. n Drive Roller is disassembled or replaced. n Paper-axis Assembly is disassembled or replaced. Perform the Accuracy Calibration as follows: Make sure you load HP High Gloss Photo Paper in to the Printer before performing this calibration. Do NOT use any other type of media apart from HP High Gloss Photo Paper. 1 In the Service Calibrations submenu, scroll to "1. Accuracy cal" and press Enter. Service Calibrations 1. Accuracy cal... 2. Line sensor cal... 3. Service station... 4. Roller mark position... 5. Pen to Paper Spacing... Top Back ↑ Make Selection ↓ Enter Press Enter 2 When the following message appears on the front panel, select "Create Pattern" and press Enter. Recalibrate Create Pattern Measure Pattern Top Back ↑ Make Selection ↓ Enter Press Enter 5-6 HP DesignJets 1050C and 1055CM Printers Service Manual