Order Number: EK–SMCPC–UG. A01
4–1
4
Maintenance
This chapter describes the status of the SBB LED indicators and how to replace the components in the
pedestal. It also presents a brief troubleshooting approach in the event of a pedestal component
malfunction.
4.1
Pedestal Indicators
The wide expansion storage pedestal identifies error conditions or failures caused by the
major pedestal components such as the blowers, power supplies, or storage devices. This
status is displayed on the power supply and storage device light emitting diodes (LEDs).
The following sections describe the logic signals representing these conditions or failures
(their states and functions) and how to interpret the LED displays.
4.1.1 Pedestal Status
The pedestal monitors both blower operation and power. The blowers on the rear of the
pedestal provide cooling and the pedestal power supply pr5 Vdc and +12 Vdc to
operate the storage devices. The personality module LEDs monitor blower status. The
power supply LEDs indicate the state of the pedestal components. The LEDs indicate a
fault when one of the following conditions occur:
•
A power supply fault
•
A blower problem
•
An input power problem
4.1.2
Power Supply LEDs
The status of both the pedestal blowers and the power supplies can be determined by the
power supply green LEDs as shown in Figure 4–1. The left LED displays the pedestal
(shelf) status and the right LED displays the power supply status.
•
When the left LED is on, both the pedestal blowers and the power supplies are
functioning properly
•
When the left LED is off, either a pedestal blower or a power supply is not
functioning properly
Tables 4–1 and 4–2 describe the power supply LED codes.
