IBM 8651RM0 Hardware Maintenance Manual - Page 27

Power Up Sequence

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The status conditions that the lights on the power supply indicate are: AC Power Light On On Off DC Power Light On Off Off Description The power supply is on and operating correctly. Either the Power On/Off button is in the Off position (the Power-On light on the front of the server is off and the DC Power lights on all the power supplies are off) or this power supply has failed (the DC Power light on at least one of the power supplies is on). The server is not connected to an active wall outlet. Power Up Sequence: To check the power up sequence, do the following. 1. Power-off the server. 2. Disconnect the power cord and wait 10 seconds until all unit LEDs go off; then, reconnect the power cord to reset the power supply units. 3. Check standby mode (system is plugged in but not powered on). One AC Good LED on each power supply should be on and the control panel LEDs are off. 4. Press the power button on the control panel. The power supply DC Good LEDs will illuminate and the control panel power failure light (LED) will briefly flash yellow and the power-on light will turn solid green. 5. Check power-on mode for the following: Power supply fans and system fans are on. Power supply units are warm and the control panel power-on LED and the two LEDs on each power supply are green. Note If any of the two power supply LEDs are off in any of the preceding steps, replace the power supply. IBM Netfinity 7000 - Type 8651 19

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The status conditions that the lights on the power supply
indicate are:
Power Up Sequence:
To check the power up
sequence, do the following.
1.
Power-off the server.
2.
Disconnect the power cord and wait 10 seconds until
all unit LEDs go off; then, reconnect the power cord
to reset the power supply units.
3.
Check standby mode (system is plugged in but not
powered on).
One AC Good LED on each power
supply should be on and the control panel LEDs are
off.
4.
Press the power button on the control panel.
The
power supply DC Good LEDs will illuminate and the
control panel power failure light (LED) will briefly flash
yellow and the power-on light will turn solid green.
5.
Check power-on mode for the following:
Power supply fans and system fans are on.
Power supply units are warm and the control
panel power-on LED and the two LEDs on each
power supply are green.
Note
If any of the two power supply LEDs are off in any of
the preceding steps, replace the power supply.
AC Power
Light
DC Power
Light
Description
On
On
The power supply is on and
operating correctly.
On
Off
Either the Power On/Off
button is in the Off position
(the Power-On light on the
front of the server is off and
the DC Power lights on all
the power supplies are off)
or this power supply has
failed (the DC Power light
on at least one of the power
supplies is on).
Off
Off
The server is not connected
to an active wall outlet.
IBM Netfinity 7000 - Type 8651
19