Light Path Diagnostics Leds - IBM PS703 Service Manual

Light path diagnostics LEDs

Light path diagnostics is a system of LEDs on the control panel and on the system board of the blade
server. When an error occurs, LEDs are lit throughout the blade server. If the control panel indicates an
error, use the descriptions of the LEDs to diagnose the problem and take corrective action.
Table 36 describes the LEDs on the system board and suggested actions for correcting any detected
problems.
Table 36. Light path diagnostic LED descriptions
v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See Chapter 3, "Parts listing, type 7891," on page 225 to determine which components are CRUs and which
components are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Lit light path
diagnostics LED Description
None An error has occurred and cannot be isolated,
or the service processor has failed.
Battery error A battery error occurred.
P1-E1
Check card below No error was detected on the expansion unit.
Action
An error has occurred that is not represented
by a light path diagnostics LED. Check the
management-module event log for information
about the error.
1. Reseat the battery, as described in
"Installing the battery" on page 258.
2. Replace the battery, as described
in"Removing the battery" on page 258 and
"Installing the battery" on page 258.
Check the PS704 LEDs. The Check card below
LED only confirms no errors are identified on
the PS704 expansion unit. It does not
guarantee there is an error on the PS704 base
unit.
Chapter 2. Diagnostics
213