T&D Procedures - InfoPrint 4247 Z03 Maintenance Information

e. If an error is detected, an audible alarm will sound. All LEDs will flash. An error message will be displayed.
KO(n1) FRU(N2) [N3]
Where: n1 is the number of the forced test; n2 is the FRU. related to the fault; n3 is the Diagnostic Error
Code.
f. For a description of error messages, go to T&D error messages and actions.
g. Press any key to return to the beginning of the failed test.
h. The following message will be displayed:
i. Single test mode description stops here.
9. Automatic Test Mode:
TEST & DIAGNOSTIC START UP
SINGLE
a. Press the LOAD/EJECT key to select NO (run automatic test mode instead). You will be prompted by the
display or the instructions in T&D procedures to press keys or install paper.
b. If the test is completed successfully, the present test description is displayed again.
c. If an error is detected, an error message will be displayed.
KO(n1) FRU(N2) [N3]
Where: n1 is the number of the forced test; n2 is the FRU. related to the fault; n3 is the Diagnostic Error
Code.
d. For a description of error messages, go to T&D error messages and actions.
e. If all the tests run OK, the following message will be displayed:
END T&D........
f. To exit the T&D program, power off the printer, and remove any loop-back connector (if installed).
T&D procedures
1. If an error message is displayed during the T&D program, note the error information.
KO(n1) FRU(N2) [N3]
YES NO
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Chapter 2. Diagnostics