Remind Button; Light Path Diagnostics Switch; Light Path Diagnostics Leds - IBM System x3550 Type 7978 Problem Determination And Service Manual

Remind button

You can use the remind button on the light path diagnostics panel to put the
system-error LED on the operator information panel into Remind mode. When you
press the remind button, you acknowledge the error but indicate that you will not
take immediate action. The system-error LED flashes while it is in Remind mode
and stays in Remind mode until one of the following conditions occurs:
v All known errors are corrected.
v The server is restarted.
v A new error occurs, causing the system-error LED to be lit again.

Light path diagnostics switch

The light path diagnostics switch allows you to review error indications after the
server has been powered down. Press and hold the diagnostics switch, located on
the system board to relight the LEDs that were lit before you removed power from
the server. The LEDs will remain lit for as long as you press the switch, to a
maximum of 25 seconds.

Light path diagnostics LEDs

The following table describes the LEDs on the light path diagnostics panel and
suggested actions to correct the detected problems.
Note: Check the system-error log or BMC log for additional information before
replacing a FRU.
58
IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
Power-on LED
Location LED
System-error LED
PCI slot 2 error LED
Remote Supervisor
Adapter II
SlimLine error LED
BMC status
LED
System-board
fault LED
Fan 1 error LED
Power B error LED
Power A error LED
Power C error LED
Power D error LED
Fan 2 error LED
System-board battery
error LED
PCI slot 1
error LED
DIMM 5 error LED
DIMM 6 error LED
DIMM 7 error LED
DIMM 8 error LED
Light path diagnostics
active LED
Light path diagnostics switch
RAID error LED
Microprocessor 2
error LED
Microprocessor 1
error LED
DIMM 1 error LED
DIMM 2 error LED
DIMM 3 error LED
DIMM 4 error LED
Fan 6 error LED
Fan 5 error LED
Fan 4 error LED
Fan 3 error LED