User's Manual

HP Designjet T Series — Service Manual 3-7
Service Tests (Diagnostics)
 System Error Code 42:XZ.
 System Error Code 47:XZ.
 System Error Code 73:XZ.
 System Error Codes related to Scan-Axis shutdown or Carriage jam.
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.
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 SCAN-AXIS.
Star Wheel Lifter test
The Star Wheel Lifter subassembly is designed to move the Start Wheel
supp
ort to the up and down positions. This is used to load roll or sheet
media and avoid damage to the Star Wheel caused by paper jams etc.
Perform the Scan Axis - Starwheel lifter 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 1. Scan Axis and press OK.
2 The Front Panel will show the 1. Scan Axis submenu.
3 In the Scan Axis submenu, scroll to Star Wheel Lifter and press OK to
start the test.
If there is a Failure at any point during the tests, the Front Panel will display
the relev
ant System Error Code. To trouble shoot any displayed error
codes, see
System Error Codes - Full Descriptions on page 2-7.