Power
control
button
System
locator
LED (blue)
System
information
LED (amber)
System error
LED (amber)
SCSI or IDE
bus activity
LED (green)
Power-on
LED (green)
2. To view the light path diagnostics panel, press the release latch on the front of
the operator information panel to the left; then, slide it 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.
CPU
VRMS_ERR
MEMORY
DASD/
RAID
NMI
SP BUS
FAN
POWER
SUPPLY
PCI
BUS
2
1
CONFIG
TEMP
REMIND
SEE INSIDE COVER FOR MORE SERVICE INFORMATION
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 133 can often provide enough information to diagnose the error.
3. Remove the server cover and look inside the server for lit LEDs. Certain
components inside the server have LEDs that will be lit to indicate the location
of a problem.
The following illustration shows the LEDs on the system board.
132 IBM System x3500 Type 7977: Problem Determination and Service Guide
To Next Page
Loading...
Need help?
General
