Unisys E-@CTION EFP9800 - Manual (Page 39)

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Section 3
Diagnostics and Print Tests
The following diagnostic tests are available for the EFP9800:
•
Level 0 Diagnostics: Performed during the startup cycle and each time the
printer is reset.
•
Level 1 Diagnostics: Performed using DIP switches or the Paper Feed
button.
•
Diagnostic Print Tests.
Level 0 Diagnostics
The printer automatically performs Level 0 diagnostics each time it is turned on.
Level 0 diagnostics include the following:
•
All motors and solenoids are turned off.
•
Microprocessor timing is checked.
•
Firmware ROM is tested.
•
On board and external RAM are checked.
•
If this test succeeds, the green Online LED flashes once.
•
If this test fails, Level 0 diagnostics stop. The printer becomes inactive: the
printhead does not home, the red Paper Status and the green Slip In LED’s
turn on, and the printer is unable to communicate with the host computer.
•
Printhead is homed. If this action fails, a fault condition occurs.
•
Status of all sensors is checked and status bytes are updated.
If this is the first time that the printer is turned on, or if a new NVRAM has been
installed, the default values for the printer functions and tests are loaded into
NVRAM during Level 0 diagnostics. To change the printer functions and tests,
use Level 1 diagnostics. For more information, see “Level 1 Diagnostics” on the
next page.