6-14 Phaser 84000/8500/8550/8560 Color Printer Service Manual
Adjustments and Calibrations
Disabling Jet Substitution Mode (8500/8550/8560)
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
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.
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