IBM System x3650 Type 7979 Problem Determination And Service Manual page 68

2. To view the light path diagnostics panel, slide the latch to the left on the front of
3. Remove the server cover and look inside the server for lit LEDs. A lit LED on or
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IBM System x3650 Type 7979 and 1914: Problem Determination and Service Guide
Power-on Hard disk drive
LED activity LED
Power-control
button
the operator information panel and pull the panel forward. This reveals the light
path diagnostics panel. Lit LEDs on this panel indicate the type of error that has
occurred.
The following illustration shows the light path diagnostics panel.
OVER SPEC
CPU
REMIND
MEM
SP
FAN
PCI
Note any LEDs that are lit, and then push the light path diagnostics panel back
into the server.
Look at the system service label on the top of the server, which gives an
overview of internal components that correspond to the LEDs on the light path
diagnostics panel. This information and the information in "Light path diagnostics
LEDs" on page 52 can often provide enough information to diagnose the error.
beside a component identifies the component that is causing the error.
The following illustration shows the LEDs on the system board.
Information Release
latch
LED
System System-error
locator LED
LED
Light Path
Diagnostics
PS1 PS2
VRM CNFG
NMI
S ERR
DASD RAID
TEMP BRD