IBM Power System 8247-42L Manual page 141

A B C
Front View
Top View
F
H I
Figure 109. Control panel
v A: Power-on button
– A constant light indicates full system power to the unit.
– A flashing light indicates standby power to the unit.
– There is approximately a 30-second transition period from the time the power-on button is
pressed to when the power LED goes from flashing to solid. During the transition period, the
LED might flash faster.
v B: Enclosure identify light
– A constant light indicates the identify state, which is used to identify a part.
– No light indicates that the system is operating normally.
v C: System information light
– No light indicates that the system is operating normally.
– Light on indicates that the system requires attention.
v D: Enclosure fault roll-up light
– A constant light indicates a fault in the enclosure.
– No light indicates that the system is operating normally.
v E: Eject button
v F: Function/Data display
v G: Pinhole reset button
v H: Decrement button
v I: Enter button
v J: Increment button
4. Observe the following aspects after pressing the power button:
v The power-on light begins to flash faster.
v The system cooling fans are activated after approximately 30 seconds and begin to accelerate to
operating speed.
D E
G
J
Common procedures for removing and replacing the system backplane
123