Lexmark Optra E Service Manual - Page 70
Diagnostic Tests, Printer Diagnostic Test
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4026-0XX Diagnostic Tests Printer Diagnostic Test The following tests run sequentially when performing this test: Standard Memory Test Optional Memory Test Microcode Check LED Test Read/Write ASIC Register Test Read/Write ASIC SRAM Test Read/Write controller board SRAM Test Perform the following steps to run the Printer Diagnostic Test: 1. Turn the printer off. 2. Open the top cover. 3. Press and hold the operator panel button as you turn on the printer. Release the button once the printer's indicator lights come on. 4. Wait until the Error LED (top cover open indication) comes on. 5. Close the top cover. 6. The Ready LED comes on solid and the Data LED blinks. (This is the printer Busy Mode indication). 7. If all the diagnostic tests run correctly, the Ready LED goes off and the Data LED continues to blink. If a test fails, the error light pattern for the service error code displays on the operator panel. 3-3