Xerox 8500DN Service Manual - Page 264
Disabling Jet Substitution Mode (8500/8550/8560), Resetting NVRAM
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Adjustments and Calibrations Disabling Jet Substitution Mode (8500/8550/8560) Resetting NVRAM After the Printhead is replaced, disable Jet Substitution Mode to restore normal operation. To deselect Jet Substitution Mode: 1. On the Control Panel, scroll to Troubleshooting, then press the OK button. 2. Select Print Quality Problems, and then press the OK button. 3. Select Eliminate Light Stripes, and then press the OK button. 4. Select Turn Jet Substitution Mode Off, and then press the OK button. 5. Print the Eliminate Light Stripes test page to verify that Service Mode is disabled for all jets. Resetting NVRAM returns all the image processor board NVRAM-stored parameters to their factory default values. The print counts and the Adobe firmware serial number are not affected by this reset. You can reset the PostScript NVRAM using the Service Tools menu or the Service Diagnostics menu. 6-14 Phaser 84000/8500/8550/8560 Color Printer Service Manual
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