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Chapter 2 31
Indicators, switches, and displays
System Displays
Attention light bar
The Attention light bar is located at the top left corner on the front of the
V2500/V2600 server as shown in Figure 17 on page 27. The light bar
displays system status in three ways:
• OFF—dc power is turned off. Either the key switch or the side circuit
breaker is in the off position.
• ON—Both the side circuit breaker and the keyswitch are in the on
position and no environmental warning, error, or hard error exists.
• Flashing—There is an environmental error, warning, or hard error
condition. Also indicates scanning during diagnostic execution.
NOTE The light bar flashing during initial start up does not indicate a fault.
The types of environmental conditions that are monitored include:
• ASIC installation error sensing
• ASIC configuration or status
• 48V failure
NOTE 48V failures are cleared only after a power cycle.
• Power failure sensing
• Fan sensing
• Thermal sensing
Types of environmental control functions monitored include:
•Power-on
• Voltage margining (SSP interface)
p Multi-node hardware verification
q Multi-node initialization ending synchronization
r Enabling system error hardware.
Message display code Description