Merlin 3070 Service And Maintenance Manual page 181

3. Resolve diagnostics messages.
If an asterisk ("*") appears on the left side of the display, follow
these steps:
A. Write down the slot number next to "*". The slot number
indicates the module that is the most likely source of
trouble. The "*ALL" message indicates the trouble cannot
be isolated to a particular slot. The "*INT" message
indicates an unexpected interrupt.
B. Hold down the Detail button and write down the message.
C. Look up the slot number and detail message in the
"Diagnostic Display Messages" section and perform the
recommended action. Check for bent or broken
backplane pins before replacing any module. If you find
faulty pins, contact your equipment supplier.
D. Press the Next button to continue testing.
E. If you wish to begin a new sweep of tests (from the "DIAG"
message onward), press the Detail button while no "*" is
present on the display.
F. It is possible to skip some module tests and go on to
others. If you wish to skip a particular module test, press
the Next button while no "*" message is present in the
display. The message "STEP" will appear after you press
Next and testing will begin.
The Processor Module test (listed in the display as "CPU"),
the Diagnostics Module test ("DGM"), and the "ALL" test
cannot be skipped.
4. Repeat diagnostics.
When "DIAG" and the firmware version number
display, a new sweep of testing begins. Testing
you exit test mode.
5. Exit test mode.
Set the Normal/Test switch to Normal. The system will resume
normal call processing. Diagnostic testing is complete.
6
reappear on the
continues until