MAP 5040: Power SAN Volume Controller 2145-DH8

It might become necessary to solve problems that are associated with power on the SAN Volume Controller 2145-DH8.

Before you begin

If you are not familiar with these maintenance analysis procedures (MAPs), first read Using the maintenance analysis procedures.

Power problems might be associated with any of the following reasons:

A problem occurred during the installation of a SAN Volume Controller node
The power switch failed to turn on the node
The power switch failed to turn off the node
Another MAP sent you here

Procedure

Are you here because the node is not powered on?

NO

Go to step 10.

YES

Go to step 2.
(from step 1)
Is the power LED on the operator-information panel continuously illuminated? Figure 1 shows the location of the power LED 1 on the operator-information panel.
Figure 1. Power LED on the SAN Volume Controller 2145-DH8
- 1 Power button and power LED (green)
NO

Go to step 3.

YES

The node is powered on correctly. Reassess the symptoms and return to MAP 5000: Start or go to MAP 5700: Repair verification to verify the correct operation.
(from step 2)
Is the power LED on the operator-information panel flashing approximately four times per second?
NO

Go to step 4.

YES
The node is turned off and is not ready to be turned on. Wait until the power LED flashes at a rate of once per second, then go to step 5.
If this behavior persists for more than 3 minutes, complete the following procedure:
1. Remove all input power from the SAN Volume Controller node by removing the power supply from the back of the node. See "Removing a SAN Volume Controller 2145-DH8 power supply" when you are removing the power cords from the node.
2. Wait 1 minute and then verify that all power LEDs on the node are extinguished.
3. Reinsert the power supply.
4. Wait for the flashing rate of the power LED to slow down to one flash per second. Go to step 5.
5. If the power LED keeps flashing at a rate of four flashes per second for a second time, replace the parts in the following sequence:
  System board
Verify the repair by continuing with MAP 5700: Repair verification.
(from step 3)
Is the Power LED on the operator-information panel flashing once per second?

YES

The node is in standby mode. Input power is present. Go to step 5.

NO

Go to step 6.
(from step 3 and step 4)
Press Power on the operator-information panel of the node.

Is the Power LED on the operator-information panel illuminated a solid green?
NO
Verify that the operator-information panel cable is correctly seated at both ends.
If the node still fails to power on, replace parts in the following sequence:
1. Operator-information panel assembly
2. System board
Verify the repair by continuing with MAP 5700: Repair verification.
YES

The power LED on the operator-information panel shows that the node successfully powered on. Verify the correct operation by continuing with MAP 5700: Repair verification.
(from step 4)
Is the rear panel power LED on or flashing?Figure 2 shows the location of the power LED 1 on the SAN Volume Controller 2145-DH8.

Figure 2. Power LED indicator on the rear panel of the SAN Volume Controller 2145-DH8
NO

Go to step 7.

YES
The operator-information panel is failing.
Verify that the operator-information panel cable is seated on the system board.
If the node still fails to power on, replace parts in the following sequence:
1. Operator-information panel assembly
2. System board
(from step 6)
Are the ac LED indicators on the rear of the power supply assemblies illuminated? Figure 3 shows the location of the ac LED 1 , the dc LED 2 , and the power-supply error LED 3 on the rear of the power supply assembly that is on the rear panel of the SAN Volume Controller 2145-DH8.

Figure 3. AC, dc, and power-supply error LED indicators on the rear panel of the SAN Volume Controller 2145-DH8
NO

Verify that the input power cable or cables are securely connected at both ends and show no sign of damage; replace damaged cables. If the node still fails to power on, replace the specified parts that are based on the SAN Volume Controller model type.
Replace the SAN Volume Controller 2145-DH8 parts in the following sequence:
1. Power supply 750 W
YES

Go to step 8.
(from step 7)
Is the power-supply error LED on the rear of the SAN Volume Controller 2145-DH8 power supply illuminated? Figure 3 shows the location of the power-supply error LED 3 .

YES

Replace the power supply unit.

NO

Go to step 9
(from step 8)
Are the dc LED indicators on the rear of the power supply assemblies illuminated?
NO
Replace the SAN Volume Controller 2145-DH8 parts in the following sequence:
1. Power supply 750 W
2. System board
YES
Verify that the operator-information panel cable is correctly seated at both ends. If the node still fails to power on, replace parts in the following sequence:
1. Operator-information panel
2. Cable, signal
3. System board
Verify the repair by continuing with MAP 5700: Repair verification.
(from step 1)
The node does not power off immediately when the power button is pressed. When the node fully boots, the node powers-off under the control of the SAN Volume Controller software. The power-off operation can take up to 5 minutes to complete.

Is the power LED on the operator-information panel flashing approximately four times per second?

NO

Go to step 11.

YES

Wait for the node to power off. If the node fails to power off after 5 minutes, go to step 11.
(from step 10)
Attention: Turning off the node by any means other than using the management GUI might cause a loss of data in the node cache. If you are performing concurrent maintenance, this node must be deleted from the system before you proceed. Ask the customer to delete the node from the system now. If they are unable to delete the node, call your support center for assistance before you proceed.
The node cannot be turned off either because of a software fault or a hardware failure. Press and hold the power button. The node can turn off within 5 seconds.
Did the node turn off?

NO

Determine whether you are using an Advanced Configuration and Power Interface (ACPI) or a non-ACPI operating system.
If you are using a non-ACPI operating system, complete the following steps:

Press Ctrl+Alt+Delete.

Turn off the server by pressing and holding Power for 5 seconds.

Restart the server.

If the server fails POST and pressing Power does not work, disconnect the power cord for 20 seconds

Reconnect the power cord and restart the server.

If the problem remains or if you are using an ACPI-aware operating system, suspect the system board.

Go to step 12

YES

Go to step 12.
(from step 11)
Press the power button to turn on the node.

Did the node turn on and boot correctly?
NO

Go to MAP 5000: Start to resolve the problem.

YES

Go to step 13.
(from step 12)
The node probably suffered a software failure. Memory dump data might be captured that helps resolve the problem. Call your support center for assistance.