• Calculates reflectivity ratios and operating points to attain the darkness target of each operating point
• Modifies the EP mechanism as necessary to adjust toner darkness
The cartridge smart chip controls how often this process executes.
Note: No messages are displayed on the control panel to give any indication that this test is running. The device
stores the results of its most recent process in the Auto dark adj field on the Menu settings page report.
When deactivated, the printer disables and never executes this process.
To adjust this setting:
1 From the Diagnostics menu, navigate to:
EP Setup > Auto Dark Adj
2 Choose Enable or Disable.
3 Press OK to save any changes.
Reports
Menu Settings Page
This prints the Menu settings page which contains the Diagnostics menu settings and their current values.
Event Log
Display Log
This version of the Event log displays the panel text that appeared when the event occurred.
To view the Event log:
1 From the Diagnostics menu, navigate to:
Event Log > Display Log
2 Use the arrow buttons to navigate through the entries.
Print Log
Additional diagnostic information is available when the event log is printed. The first page of the report shows the
general device information.
The specific events that appear in the report vary depending on the operational history of the printer. Logs may be
printed from the following events:
• Job accounting log failures
• NV reset failures
• NV mirror entries
• 9xx and 1xx (print engine) service error entries
• Programming error entries
• Maintenance count reset entries
• Clear log entries
4514-420, -430
Service menus
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