Lenovo System x3630 M4 Installation And Service Manual page 142

• If the system-error LED is lit, it indicates that an error has occurred; go to step 2.
Note: The initial server configuration will not include the light path diagnostics panel. Step 2 is for
users who have upgraded the operator information panel to the advanced operator information panel.
If the server only has the operator information panel, please go to step 3.
The following illustration shows the operator information panel on the front of the server.
Power-control button/
power-on LED
Ethernet activity
LEDs
2. To view the advanced operator information panel, press the blue latch on the right of the operator panel.
Lit LEDs on this panel indicate the type of error that has occurred. Note any LEDs that are lit, and then
reinstall the light path diagnostics panel in the server.
Look at the system service label inside the server top cover, 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 131 can often provide enough information
to diagnose the error.
3. Remove the server top cover and look inside the server for lit LEDs. Certain components inside the
server have LEDs that are lit to indicate the location of a problem. The following illustration shows the
LEDs on the system board.
System error LED
RTMM heart beat LED
IMM heart beat LED
Standby power LED
System board error LED
Microprocessor mismatch LED
DIMM error
LEDs 1-6
Microprocessor 1
error LED
PCI riser 1
missing LED
Fan 1A
error LED
LED name
Error LEDs
RTMM heartbeat LED
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Lenovo System x3630 M4 Installation and Service Guide
System locator System-error
LED
LED
Check log LED
Locator LED Light path button
Fan 2A
error LED
Description
When an error LED is lit, it indicates that the associated component has failed.
Power-on and power-off sequencing.
Reset button
Light path LED
Battery error LED
PCI riser 2
missing LED
DIMM error
LEDs 7-12
Microprocessor 2
error LED
Fan 5 error LED
(reserved)
Fan 4 error LED
(reserved)
Fan 3A
error LED