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Diagnostics
How to Loop MOSS Diagnostics
If an intermittent MOSS problem is suspected, the
loop MOSS diagnostics facility can be used as
follows:
Ensure that the MOSS is offline or alone
(check the MOSS Status Area, on the second
line of the console screen).
1. Set the service mode to Maintenance 1:
a. Press Service until the number 1 is dis-
played in the service window.
b. Press Validate.
2. Set the function to loop on MOSS diagnostics:
a. Press Function until the digit A is dis-
played in the function window.
b. Press Validate.
3. The MOSS diagnostics will run continuously
unless an error is detected. Usually 5 to 10
minutes of error free operation are sufficient to
determine whether the MOSS is working satis-
factorily. If an error is detected, a panel code
will be permanently displayed. Therefore, go
to “3745 Control Panel Codes” on page 1-15.
Gentle vibration of the MOSS cables and
cards (while the test is running), will locate
most loose connection problems.
If no error is detected:
4. Set the function to MOSS IML:
a. Press Function until 1 is displayed in the
function window.
b. Press Validate.
5. When the control panel displays F0F (or F0E
if the MOSS was previously alone), perform a
MOSS online. Refer to “How to Put the
MOSS Online” on page 4-105.
Chapter 3. How to Run 3745 Diagnostics 3-5