Diagnostic aids 3-5
4512-420, -430
Diagnostics mode
Entering Diagnostics Mode
1. Turn off the printer.
2. Press and hold Go and Back .
3. Turn on the printer.
4. Release the buttons when Performing Self Test displays.
Available tests
The tests display on the operator panel in the order shown:
Diagnostics mode tests
REGISTRATION
Margins
(top margin, bottom margin, left margin)
See “Margins” on page 3-7.
Quick Test See “Quick Test” on page 3-14.
Printhead See “Printhead assembly electronic adjustment” on page 3-8.
PRINT TESTS
Tray 1 See “Input source tests” on page 3-14.
Tray 2 (if installed) See “Input source tests” on page 3-14.
Prt Quality Pgs See “Print quality pages (Prt Quality Pgs)” on page 3-14.
HARDWARE TESTS
LCD Test See “LCD Test” on page 3-15.
Button Test See “Button Test” on page 3-15.
DRAM Test See “DRAM Test” on page 3-15.
DUPLEX TESTS
Quick Test See “Quick Test” on page 3-16.
Top margin See “Top Margin” on page 3-16.
Left Margin See “Left Margin” on page 3-16.
Sensor Test See “Sensor Test” on page 3-16.
Duplex Feed 1 See “Duplex Feed 1” on page 3-17.
INPUT TRAY TESTS
Feed Tests See “Feed Tests (input tray)” on page 3-17.
Sensor Test See “Sensor Test (input tray)” on page 3-18.
BASE SENSOR TEST
Front Door See “Front Door (front access door sensor)” on page 3-18.
Input See “Input (input sensor)” on page 3-18.
Output See “Output (exit sensor)” on page 3-18.
PRINTER SETUP
Defaults See “Defaults” on page 3-19.
Page Count See “Page Count” on page 3-19.
Perm Page Count See “Perm Page Count (permanent page count)” on page 3-19.
Serial Number See “Serial Number” on page 3-20.
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