1 Power-on LED 5 System-error LED
2 Hard disk drive activity LED 6 System-locator LED
3 Information LED 7 Power-control button
4 Release latch
2. To view the Easy LED Diagnostics panel, slide the latch to the left on the front
of the operator information panel and pull the panel forward. This reveals the
Easy LED Diagnostics panel. Lit LEDs on this panel indicate the type of error
that has occurred.
The following illustration shows the Easy LED Diagnostics panel.
DASD
NMI
PCI
PS1
SP
PS2
CNFG
MEM
CPU
FAN
VRM
OVER SPEC
TEMP
REMIND
S ERR
Light Path
Diagnostics
RAID
BRD
Note any LEDs that are lit, and then push the Easy LED 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 Easy LED
Diagnostics panel. This information and the information in “Easy LED
Diagnostics” on page 164 can often provide enough information to diagnose the
error.
3. Remove the server cover and look inside the server for lit LEDs. A lit LED on or
beside a component identifies the component that is causing the error.
The following illustration shows the LEDs on the system board.
162 ThinkServer RD120 server Machine Types 6444, 6445, 6446, and 6447: Hardware Maintenance Manual
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