IBM XSERIES 255 TYPE 8685, Руководство по техническому обслуживанию и ремонту

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Handle
(open position)
AC power LED
DC power LED
Power supply
Release latch
Hot-swap fan
Release
latch
For more information about the ac and dc power LEDs, see “Power-supply LED
errors” on page 145.
Light path diagnostics
You can use the light path diagnostics feature built into your server to quickly
identify the type of system error that occurred. Your server is designed so that LEDs
remain illuminated when the server shuts down, as long as the power supplies are
operating properly. This feature helps you to isolate the problem if an error causes
the server to shut down.
Diagnostic panel LEDs
The following illustration shows the location of the error LEDs and the Remind
button on the light path diagnostics panel. See “Diagnostic panel system error LED”
on page 130 for information on identifying problems using these LEDs.
PCIC PCID DASD
NMI
PCIA
PS1
PS3
ISMP
PCIB
PS2
PS4
LOG
CPU
FAN
VRM
OVER
SPEC
TEMP
NON
REDUND
D1
D2
D3
D4
D7
D8
D9
D10
D11
D12
D5
D6
REMIND
MEMORY
Light Path
Diagnostics™
Notes:
1. If the memory is configured for 2-way or 4-way memory interleaving and a
single DIMM fails, the lights for all of the interleaved DIMMs on that bank will be
lit. See “Memory errors” on page 34.
2. The light path diagnostics panel is also called the LED card or the diagnostic
LED panel.
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xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide