4 Troubleshooting Troubleshooting Guide
76
Flexible Module Server
Integrated Module Slots
Symptoms Cause of Failure Failure Isolation and Remedy
Prompt Message
“Unrecognized
Measurement Module in
slot s” is issued
An unsupported module has been
plugged into the Flexible Module
Server
Unplug the unsupported module
Prompt message
“Measurement Module in
slot n is currently ignored”
is issued
Too many modules of the same kind
have been plugged into the Flexible
Module Server
Unplug module in slot n
Red Error LED stays on Unrecoverable hardware selftest
error:
Try to attach the MMS directly
to the MSL cable. If the
measurements show up on the
screen, the fault is in the FMS
MSL cable defective
If the measurements do not show
up when the MMS is connected
directly to the MSL cable, then
replace MSL cable
Flex connector from main board to
MSL defective
Replace connector
CPU module defective
Replace CPU module
Red Error LED flashes Hardware selftest error If system comes up, check status
log. Otherwise see above
Flexible Module Server
LEDs ok, Front End
Measurement Module not
recognized (no prompt or
INOP)
Measurement Module or
Measurement Module Connector
defective
Replace Measurement Module
No Front-End power because MSL
voltage from the monitor is too high
or too low
Try a new MSL cable. Replace if
failure is rectified.
Replace mother board
Mother board or connector on
Mother Board defective
If the voltage is in range, or there
is obvious damage to a connector,
replace mother board
Symptoms Cause of Failure Failure Isolation and Remedy
Prompt Message
“Unrecognized
Measurement Module in
slot m” is issued
An unsupported module has been
plugged into the Integrated Module
Slot
Unplug the unsupported module.
Prompt message
“Measurement Module in
slot n is currently ignored”
is issued
Too many modules of the same kind
have been plugged into the
Integrated Module Slot
Unplug module in slot n
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