Xerox 8500DN Service Manual - Page 210

Print-Quality Troubleshooting Random Light Stripes Troubleshooting Procedure (Continued) Step Questions and Actions Yes 4 Remove the Drum Maintenance Kit and Complete. clean the wiper blade with a lint-free cloth or replace the maintenance kit. Did this correct the problem? 5 For the 8400: Complete. Download the latest Jet Fix snippet from the Customer Support Site and follow the readme instructions. For the 8500/8550/8560: Select "Advanced". You are prompted to choose the color and number of the problem jet based on the Light Stripes Test page. After selections are made, the printer temporarily increases the drive voltage to the selected jet, prints several pages, and then performs a cleaning cycle. Did this correct the problem? 6 1. Turn off the printer for at least 4 hours. 2. Turn on the printer and if necessary, repeat Step 1. Did this correct the problem? Complete. Predominate Light Stripes No Go to Step 5. Go to Step 6. Follow the instructions on the "Printhead Troubleshooti ng Checklist". All four color bars are missing on the test page. A thin stripe with no colon is likely due to foreign debris scratching ink off the Drum or the print. If there are a series of regularly spaced white lines approximately 6 mm (.25 in.) apart see "White Stripes (Pinstripes)" on page 30 Initial Actions ■ Run the Eliminate Light Stripes routine from the Control Panel. ■ Check the exit path for debris or contamination. Troubleshooting Reference Applicable Parts ■ Printhead ■ Drum Maintenenace Kit ■ Stripper Carriage Example Print 5-4 Phaser 8400/8500/8550/8560 Color Printer Service Manual