User's Manual
Service Tests and Utilities 
3-18 HP Designjet T Series — Service Manual
11 The Front Panel prompts you to shutdown the printer to complete the test.
12 Press any key to shutdown the printer.
2. Paper Drive
The Paper Drive test diagnoses Failures of components of the Media-Axis.
You must perform the Paper Drive Test after:
 System Error Code 81:XZ.
 System Error Code 41:XZ.
 System Error Code 73:XZ.
Diagnostic tests also need to be performed after removing or replacing 
certain pr
inter components. If you have removed or replaced printer 
components, check the 
Service Calibration Guide to Removal and 
Installation on page 6-5 to see which tests and calibrations you need to 
perform. 
Service Calibration Guide to Removal and Installation on page 6-
5.
ALL THE COVER SENSORS ARE DISABLED WHEN IN THE 
SERVICE TESTS MENU. IF THE CARRIAGE IS MOVING IT WILL 
NOT STOP IF THE WINDOW IS OPENED, SO BE VERY CAREFUL 
NOT TO PUT YOUR HANDS INSIDE.
IF POSSIBLE ALWAYS PERFORM THIS TEST BEFORE 
REPLACING ANY COMPONENT OF THE MEDIA-AXIS.
Perform the Paper Drive test as follows:
Perform this test with the Printheads and the Tubes System 
installed in order to get values that can be compared 
correctly.
1 In the Diagnostics menu, scroll to 2. Paper Drive and press OK.
2 The printer starts the Paper Drive test to verify the subsystem. As the test 
executes the Front Panel displays the following messages:
 Starting Horsburgh and Mips.










