Location Of The Power-Supply Leds; Power Supply Led Errors - IBM TotalStorage NAS 300 User Reference

Power-supply LEDs
The AC Power LED and DC Power LED on the power supply provide status
information about the power supply. Figure 7 show the location of the power-supply
LEDs.
Figure 7. Location of the power-supply LEDs
Diagnostics panel LEDs
You can use the light-path diagnostics to quickly identify the type of system error
that occurred. The diagnostics panel is under the cover. Each engine is designed so
that any LEDs that are on, remain on when the engine shuts down if the ac power
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NAS Gateway 300 User's Reference
7
System locator LED: This blue LED can be turned on remotely to identify
a specific engine.
1
1
Power supply 1 AC power LED (green)
2
Power supply 1 DC power LED (green)
3
Power supply 2 AC power LED (green)
4
Power supply 2 DC power LED (green)
Table 8. Power supply LED errors
AC Power DC Power
LED LED
Off Off
On Off
On On
3 4
2
Description and recommended actions
No power to system or ac problem
Action: Check ac power to appliance.
Standby mode or dc problem
Action:
1. Check processor-board cable connector, J33. by moving the
jumper on the J32 extension cable to pins 2 and 3 to bypass
power control. If the DC Good LED comes on, press
Ctrl-Alt-Delete. Watch the screen for any POST errors.
2. Check the System Error log for any listed problems.
3. If the appliance powers on with no errors: check the power
switch assembly or system board.
4. Remove the adapters, and disconnect the cables and power
connectors to all internal and external devices. Power on the
system. If the DC Power LED comes on, replace the
adapters and devices one at a time until you isolate the
problem.
Power is OK