Product specifications

Section 5 Maintenance SM810/SM811
3BSE036351-510 A 207
SM810/SM811
Table 29. SM810/SM811 – Fault-Finding
Fault Possible Cause and Corrective Action
Neither R(un) nor F(ault) LEDs
are ON
The SM810/SM811 board is in the process of
being restarted or configured. Allow time for this to
finalize.
If the condition persists, and no other unit LED on
the CEX-Bus is lit:
• Check the Log File
• Check the CEX-Bus fuse inside the CPU unit.
• Initiate a reset signal (INIT) from the CPU
unit.
• Replace the SM810/SM811 unit.
F(ault) LED is ON Unit error. Replace the SM810/SM811 unit.
PRIM LED is flashing Unit error. Replace the SM810/SM811 unit.
PRIM LED is OFF in single
configuration.
Unit error. Replace the SM810/SM811 unit.
SYNC LED is flashing Upgrade in progress. When the LED is blinking
with a symmetric pattern, allow time for this to
finalize. If the LED is blinking with a 3 blinks and a
pause sequence, the SM811 is ready for
acknowledgment of SIL3 hot insert, see SM811
and TP868 on page 278. If the condition persists
for a longer time, replace the SM810/SM811 unit.