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 1 describes the LEDs on the system board and suggested actions for correcting any detected problems.
Table 1. Light path diagnostic LED descriptions
  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • See Parts listing, type 7891 to determine which components are CRUs and which components are FRUs.
  • 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 Action
None An error has occurred and cannot be isolated, or the service processor has failed. 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.
Battery error

P1-E1

 A battery error occurred.
  1. Reseat the battery, as described in Installing the battery.
  2. Replace the battery, as described inRemoving the battery and Installing the battery.
Check card below No error was detected on the expansion unit. 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.
DIMM x error

P1-C1 DIMM 1
P1-C2 DIMM 2
P1-C3 DIMM 3
P1-C1 DIMM 1
P1-C2 DIMM 2
P1-C3 DIMM 3
P1-C4 DIMM 4
P1-C5 DIMM 5
P1-C6 DIMM 6
P1-C7 DIMM 7
P1-C8 DIMM 8
P1-C9 DIMM 9
P1-C10 DIMM 10
P1-C11 DIMM 11
P1-C12 DIMM 12
P1-C13 DIMM 13
P1-C14 DIMM 14
P1-C15 DIMM 15
P1-C16 DIMM 16
P2-C1 DIMM 17
P2-C2 DIMM 18
P2-C3 DIMM 19
P2-C4 DIMM 20
P2-C5 DIMM 21
P2-C6 DIMM 22
P2-C7 DIMM 23
P2-C8 DIMM 24
P2-C9 DIMM 25
P2-C10 DIMM 26
P2-C11 DIMM 27
P2-C12 DIMM 28
P2-C13 DIMM 29
P2-C14 DIMM 30
P2-C15 DIMM 31
P2-C16 DIMM 32

 A memory error occurred.
  1. Verify that the DIMM indicated by the lit LED is a supported memory module, as described on the ServerProven® website.
  2. Reseat the DIMM indicated by the lit LED, as described in Installing a memory module.
  3. Replace the DIMM indicated by the lit LED, as described in Removing a memory module and Installing a memory module.
Note: Multiple DIMM LEDs do not necessarily indicate multiple DIMM failures. If more than one DIMM LED is lit, reseat or replace one DIMM at a time until the error goes away. See the online information or the Hardware Maintenance Manual and Troubleshooting Guide or Problem Determination and Service Guide for your BladeCenter® unit for further isolation.
Drive 1 error

P1-D1

P1-C18-D1

P2-D1

P2-C18-D1

 An error occurred on drive 1. Reseat the disk drive or solid-state drive. If that does not correct the problem, replace the disk drive or solid-state drive. See Removing a hard-disk drive or Removing an SSD.
Drive 2 error

P1-C18-D2

P2-C18-D2

 An error occurred on drive 2. Reseat the solid-state drive. If that does not correct the problem, replace the solid-state drive. See Removing an SSD.
Solid-state drive carrier error

P1-C18

P2-C18

 A solid-state drive carrier error occurred. Reseat the solid-state drive carrier. If that does not correct the problem, replace the solid-state drive carrier. See Removing an SSD carrier.
CFFh expansion card error

P1-C20

P2-C20

 An I/O expansion card option error occurred.
  1. Make sure that the I/O expansion option is supported.
  2. Reseat the I/O expansion option, as described in Removing and installing an I/O expansion card.
  3. Replace the I/O expansion option.

If you are still having problems, see theServerProven website.
Management card error

P1-C17

 A system board error occurred.
  1. Replace the blade server cover, reinsert the blade server in the BladeCenter unit, and then restart the blade server.
  2. Check the management-module event log for information about the error.
  3. Replace the management card assembly, as described in Removing the tier 2 management card and Installing the tier 2 management card.
  4. Replace the system board and chassis assembly, as described in Replacing the FRU system-board and chassis assembly.
CIOv form-factor expansion card error

P1-C19

P2-C19

 An I/O expansion card option error occurred.
  1. Make sure that the I/O expansion option is supported, as described on the ServerProven Web site. See http://www.ibm.com/servers/eserver/serverproven/compat/us/.
  2. Reseat the I/O expansion option, as described in Removing and installing an I/O expansion card.
  3. Replace the I/O expansion option.

See PCI expansion card (PIOCARD) problem isolation procedure for more information.
System board error

P1

P2

 A system board and chassis assembly error has occurred. A microprocessor failure shows up as a system board and chassis assembly error.
  1. Replace the blade server cover, reinsert the blade server in the BladeCenter unit, and then restart the blade server.
  2. Check the management-module event log for information about the error.
  3. Replace the system board and chassis assembly, as described in Replacing the FRU system-board and chassis assembly.
Parent topic: Light path diagnostics

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