Management and Control
Shelf Management Alarm Module
AXP1620 Installation and Use (6806800E23E)
125
7.4.5.2
SAM/ADP Status LEDs
Status is shown using an LED on the SAM face plate and ADP. The illumination state of the LED
is normally controlled by the GPIO on the SAM. The following tables describe the LED states.
7.5
Management and Control
This section gives a general description of the role of the on-board I
2
C devices and how
management, control, and redundancy is handled by the SAM. Detailed information on sensors
can be found in the
AXP1620 Subsystem IPMI Programmer’s Reference
.
7.5.1
Hardware Monitoring and Control
The hardware monitoring and control functions implemented by the AXP1620 are provided by
the on-board I
2
C-based devices.
7.5.1.1
Voltage Sensors
On-board sensors provide the following power supply voltages. All voltage sensors are
implemented using the ADM1024 device on the master-only I
2
C bus. System management
software running on the SAM is responsible for reacting to an event when an interrupt is
triggered by the ADM1024 device.
7.5.1.2
Temperature Monitoring
An on-board temperature sensor is available on the SAM. This sensor is implemented through
the ADM1024.
7.5.1.3
Fan Speed and Control
All fan speed and fan voltage sensors are exposed on the active SAM.
Table 7-5 SAM LED Status Indicators
SAM Face Plate LED
LED Color
State
State/Condition
IS (In Service)
Green
On
Active, power good
OOS (Out of Service)
Red
On
Failed
HS (How Swap)
Blue
On
Remove OK
Table 7-6 ADP LED Status Indicators
Alarm Display Panel LED
LED Color
State
State/Condition
Critical alarm (CRT)
Red
On
Active
Major alarm (MAJ)
Red
On
Active
Minor Alarm (MIN)
Yellow
On
Active
Power (PWR)
Green
On
Power Present
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