HP Integrity rx7620 Server - User Service Guide, Sixth Edition

1. Check each BPS LED.
The LED is located in the lower left corner of the power supply face. Table 5-3 shows the
states of the LEDs. A yellow LED indicates that the line cord connections are not consistent
with the pwrgrd settings.
2. Verify that power is making it to the server and that the power lines are properly connected
to the chassis.
The Server Powers On, Then Shuts Off with a Fault Light
Use this checklist to check for the following problems when the server powers on and then off:
1. Ensure that a conductive item has not been dropped or left inside the server chassis.
2. Check the connections on all boards.
3. Check the system backplane for bent pins.
Cell Board Extraction Levers
It is important that both extraction levers on the cell board be in the locked position. Both levers
must be locked in order for the MP to recognize that the cell board is powered up and functioning
properly.
Power to the cell board should only be removed using the MP:CM>PE command or by shutting
off the partition or server. Therefore, if the levers become unlocked, the partition does not have
a chance to logically shut off, and damage can occur to the operating system.
If the cell board is powered on and one lever becomes unlocked, the cell board stays powered
on. However, if the cell board is powered off, it does not power on again until the cell board is
extracted, then reinserted and both levers are in the locked position.
The lever status can be determined by issuing the MP:CM>DE command and viewing the power
status of the cell board controller (PDHC). The “ready” bit is only true when both levers are
locked and all VRMs are installed. This status can be used to determine if both levers are locked
and the cell board is properly installed in the chassis. For a sample of the output, see Figure 5-1.
If the state is RDY (all caps), it means that the “ready bit” is true. If the state is rdy (lower case)
it means that the “ready bit” is false. Descriptions of each of these states is listed below.
74 Troubleshooting