Chapter 8 Troubleshooting
Interpreting LEDs
Scalar i500 User’s Guide
347
Table 17 Power Supply Status
In the RAS tickets associated with the defective power supply, record
both the number of the module and the number of the power supply
connected to that module.
The expansion modules are numbered according to their position in
relation to the control module. The control module is assigned the
number 0. All expansion modules stacked beneath the control module are
assigned a negative number, while expansion modules stacked above the
control module are assigned a positive number. For example, expansion
module -2 is the second expansion module beneath the control module,
while expansion 2 is the second expansion module above the
control module.
Each module can have up to two power supplies. The power supply on
the left is #1, while the power supply on the right is #2.
LED Color
Represents
Power Supply Status
Green
AC OK
(top)
• Solid on — The power supply’s AC input is above the minimum
requirements to operate.
• Solid off — The power supply’s AC input is below the minimum
requirements to operate.
Green
DC OK
(middle)
• Solid on — The power supply’s output voltage is within regulation.
• Solid off — The power supply’s output voltage is not within
regulation.
Blue
Standby
(bottom)
• Solid on — Swap mode: Ready to be removed or replaced.
• Solid off — Normal.