Lexmark 4076 Execjet II Service Manual - Page 39
Encoder Sensor Test, Hex Print, appear to have a break in the sequence, replace the encoder strip. If
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4076-0XX Encoder Sensor Test Release the button after the maintenance station uncaps the print head. For this test the bottom three operator panel lights display the current carrier position as determined by the carrier encoder. The printer motors are disabled during this test to allow you to manually move the carrier to verify the encoder is working correctly. The bottom 3 lights will repeat a count of 0 to 7 as you move the carrier across the machine with the Ink Low Light = 1, the Paper Out Light = 2, and the Busy Light = 4. If the lights do not change, replace the print head cable.If the lights appear to have a break in the sequence, replace the encoder strip. If the bottom 3 lights do not come on, replace the print head cable. If the symptom remains, replace the system board. Hex Print Perform this test with a black print cartridge installed. Use this test to put the printer in hex mode. The printer prints in hexadecimal instead of ASCII. Diagnostic Aids 27