IBM 4247 Maintenance Information page 203

c. To run the currently displayed test, press the Line Feed (YES) key.
For a description of each test, go to "T&D Descriptions" on page 204 or return to the step that sent you
here.
d. If an error is detected, an audible alarm will sound. All LEDs will flash, except for the power LED which
will remain lighted. An error message will be displayed.
TDXX FRU X(X) PRESS A KEY
e. For a description of error messages, go to "T&D Error Messages and Actions – Models 001, 002, and
003" on page 231.
f. To end the T&D program, press the Form Feed (END) key.
g. The following message will be displayed:
........TEST & DIAGNOSTIC END........
h. Power off (O) the printer, and remove all loop-back connectors (if installed).
i. Single test mode description stops here.
12. Automatic Test Mode:
.....TEST AND DIAGNOSTIC STARTUP...... SINGLE YES ... NO
a. Press the Start key to select NO. You will be prompted by the display or the instructions in "T&D
Descriptions" on page 204 to press keys or install paper.
b. If an error is detected, an error message will be displayed.
TDXX FRU X(X) PRESS A KEY
c. For a description of error messages, go to "T&D Error Messages and Actions – Models 001, 002, and
003" on page 231.
d. If all the tests run OK, the following message will be displayed:
........TEST & DIAGNOSTIC END........
e. To exit the T&D program, power off (O) the printer, and remove all loop-back connectors (if installed).
203
Chapter 2. Diagnostics