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Operator information
panel
Light path
diagnostics LEDs
Release latch
The following illustration shows the controls and LEDs on the light path diagnostics
panel.
Notes:
1. Do not run the server for an extended period of time while the light path
diagnostics panel is pulled out of the server.
2. Light path diagnostics LEDs remain lit only while the server is connected to
power.
DASD
NMI
PCI
PS
SP
CNFG
MEM
CPU
FAN
VRM
OVER SPEC
TEMP
Light Path
Diagnostics
BRD
LOG
LINK
RAID
REMIND
NMI button
Reset button
Remind
button
Check point
code display
v
Remind button:
This button places the system-error LED on the front panel into
Remind mode. In Remind mode, the system-error LED flashes once every 2
seconds until the problem is corrected, the server is restarted, or a new problem
occurs.
By placing the system-error LED indicator in Remind mode, you acknowledge
that you are aware of the last failure but will not take immediate action to correct
the problem. The remind function is controlled by the IMM.
v
NMI button:
Press this button to force a nonmaskable interrupt to the
microprocessor, if you are directed to do so by IBM service.
v
Reset button:
Press this button to reset the server and run the power-on
self-test (POST). You might have to use a pen or the end of a straightened paper
clip to press the button. The reset button is in the lower-right corner of the light
path diagnostics panel.
For more information about light path diagnostics, see the
Problem Determination
and Service Guide
on the IBM
Documentation
CD.
14
IBM System x3850 X5 and x3950 X5 Types 7145 and 7146: Installation and User’s Guide
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