Kontron AM4904, User Manual

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Functional Description
29 AM4904 User Guide
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2.6.4 Power Module and Cooling Unit Status LEDs
The AM4904 LEDs for PM indicates communication to the first 2 PM in the MicroTCA chassis.
2.6.5 Module Handle Positions
At the front panel, the AM4904 provides a module handle for module extraction for securing the module in
the chassis and actuating the hot swap switch.
The module handle supports a three-position operation.
Figure 2-7: Module Handle Positions
Table 2-13: PLL Status
LOCK HOLD Description
Low Low Free running mode.
Low High PLL is in holdover mode.
High Low PLL is locked.
High High PLL is not present.
Table 2-14: MCH LED Status
MCH Color Description
PM1
green
OFF= No IPMB0 communication to PUx
ON= IPMB0 communication established
Blinking=: Not defined
PM2
CU1
green
OFF= No IPMB0 communication to CUx
ON= IPMB0 communication established
Blinking= Not defined
CU2