POWER7 information
8231-E1C, 8231-E1D, 8231-E2C, 8231-E2D, or 8268-E1D locations
Use this information to help you map a location code to
a position on the unit.
The following diagrams show field replaceable unit (FRU) layouts in the system. Use these diagrams with the following tables.
Rack views
Figure 1. Front view of the base model with six small-form
factor (SFF) bays

Figure 2. Front view of the model with three SFF bays
(optional)

Figure 3. Top view

Figure 4. Rear view

Figure 5. Rear view with feature code EJ0G (optional)

Memory card locations
Figure 6. Memory card locations

PCIe SAS RAID and SSD adapter locations
Figure 7. PCIe SAS RAID and SSD adapter locations

The following table provides location codes for parts in a server.
| Failing item name | Physical location code | Identify LED | Failing item removal and replacement procedures |
|---|---|---|---|
| System unit | Un | ||
| Fans | |||
| Fan 1 | Un-A1 | Yes | See Fans. |
| Fan 2 | Un-A2 | Yes | |
| Fan 3 | Un-A3 | Yes | |
| Fan 4 | Un-A4 | Yes | |
| Fan 5 | Un-A5 | Yes | |
| Fan 6 | Un-A6 | Yes | |
| Fan 7 | Un-A7 | Yes | |
| Power supplies | |||
| Power supply 1 | Un-E1 | Yes | See Power supply. |
| Power supply 1 - Cord connector | Un-E1-T1 | No | |
| Power supply 2 | Un-E2 | Yes | |
| Power supply 2 - Cord connector | Un-E2-T1 | No | |
| Backplanes | |||
| System backplane | Un-P1 | Yes | See System backplane. |
| Time-of-day | Un-P1 | ||
| Time-of-day battery | Un-P1-E1 | See Time-of-day battery. | |
| Storage backplane interposer | Un-P2 | Yes | |
| Disk drive backplane | Un-P3 | Yes | See Disk drive backplane. |
| Ports | |||
| System port 1 | Un-P1-T1 | No | |
| System port 2 | Un-P1-T2 | No | |
| HMC port 1 | Un-P1-T3 | No | |
| HMC port 2 | Un-P1-T4 | No | |
| USB port 1 | Un-P1-T5 | No | |
| USB port 2 | Un-P1-T6 | No | |
| SPCN port 1 | Un-P1-T7 | No | |
| SPCN port 2 | Un-P1-T8 | No | |
| Processor and processor regulator | |||
| POWER7® processor module 1 | Un-P1-C11 | Yes | See System processor module. |
| POWER7 processor module 2 | Un-P1-C10 | Yes | |
| POWER7 processor module 1 VRM | Un-P1-C12 | Yes | See Voltage regulator module. |
| POWER7 processor module 2 VRM | Un-P1-C9 | Yes | |
| Adapters | |||
| PCIe x8 G2 slot 1 | Un-P1-C2 | Yes | See PCI adapters. |
| PCIe x8 G2 slot 2 | Un-P1-C3 | Yes | |
| PCIe x8 G2 slot 3 | Un-P1-C4 | Yes | |
| PCIe x8 G2 slot 4 | Un-P1-C5 | Yes | |
| PCIe x8 G2 slot 5 | Un-P1-C6 | Yes | |
| PCIe x4 G2 slot 6 | Un-P1-C7 | Yes | |
| GX Dual-Port 12X Channel Attach adapter slot 1 | Un-P1-C1 | Yes | See GX++ channel adapters. |
| GX Dual-Port 12X Channel Attach adapter slot 1 card - port 1 | Un-P1-C1-T1 | Yes | |
| GX Dual-Port 12X Channel Attach adapter slot 1 card - port 2 | Un-P1-C1-T2 | Yes | |
| GX Dual-Port 12X Channel Attach adapter slot 2 | Un-P1-C8 | Yes | |
| GX Dual-Port 12X Channel Attach adapter slot 2 card - port 1 | Un-P1-C8-T1 | Yes | |
| GX Dual-Port 12X Channel Attach adapter slot 2 card - port 2 | Un-P1-C8-T2 | Yes | |
| System VPD card | Un-P1-C19 | ||
| Cache battery card | Un-P1-C13 | Yes | See SAS RAID enablement and cache battery pack. |
| Battery on cache battery card | Un-P1-C13-E1 | Yes | |
| RAID and cache storage controller | Un-P1-C18 | Yes | |
| Battery on RAID and cache storage controller | Un-P1-C18-E1 | Yes | |
| Memory modules | |||
| Memory card 1 | Un-P1-C17 | Yes | See Memory modules. |
| Memory card 1 - DIMM 1 | Un-P1-C17-C1 | Yes | |
| Memory card 1 - DIMM 2 | Un-P1-C17-C2 | Yes | |
| Memory card 1 - DIMM 3 | Un-P1-C17-C3 | Yes | Note: The DIMM fault and identify
LED is not visible when the system is in the service position.
|
| Memory card 1 - DIMM 4 | Un-P1-C17-C4 | Yes | |
| Memory card 2 | Un-P1-C16 | Yes | |
| Memory card 2 - DIMM 1 | Un-P1-C16-C1 | Yes | |
| Memory card 2 - DIMM 2 | Un-P1-C16-C2 | Yes | |
| Memory card 2 - DIMM 3 | Un-P1-C16-C3 | Yes | Note: The DIMM fault and identify
LED is not visible when the system is in the service position.
|
| Memory card 2 - DIMM 4 | Un-P1-C16-C4 | Yes | |
| Memory card 3 | Un-P1-C15 | Yes | |
| Memory card 3 - DIMM 1 | Un-P1-C15-C1 | Yes | |
| Memory card 3 - DIMM 2 | Un-P1-C15-C2 | Yes | |
| Memory card 3 - DIMM 3 | Un-P1-C15-C3 | Yes | Note: The DIMM fault and identify
LED is not visible when the system is in the service position.
|
| Memory card 3 - DIMM 4 | Un-P1-C15-C4 | Yes | |
| Memory card 4 | Un-P1-C14 | Yes | |
| Memory card 4 - DIMM 1 | Un-P1-C14-C1 | Yes | |
| Memory card 4 - DIMM 2 | Un-P1-C14-C2 | Yes | |
| Memory card 4 - DIMM 3 | Un-P1-C14-C3 | Yes | Note: The DIMM fault and identify
LED is not visible when the system is in the service position.
|
| Memory card 4 - DIMM 4 | Un-P1-C14-C4 | Yes | |
| Device physical locations | |||
| Tape drive (SAS) | Un-P1-D1 | No | |
| Tape drive (USB) | Un-P1-D2 | No | |
| Disk drive 1 | Un-P3-D1 | Yes | See Disk drives. |
| Disk drive 2 | Un-P3-D2 | Yes | |
| Disk drive 3 | Un-P3-D3 | Yes | |
| Disk drive 4 | Un-P3-D4 | Yes | |
| Disk drive 5 | Un-P3-D5 | Yes | |
| Disk drive 6 | Un-P3-D6 | Yes | |
| Solid-state disk drive (SSD) 1 on PCIe SAS RAID and SSD adapter | Un-P1-Cx-D1 | No | |
| Solid-state disk drive 2 on PCIe SAS RAID and SSD adapter | Un-P1-Cx-D2 | No | |
| Solid-state disk drive 3 on PCIe SAS RAID and SSD adapter | Un-P1-Cx-D3 | No | |
| Solid-state disk drive 4 on PCIe SAS RAID and SSD adapter | Un-P1-Cx-D4 | No | |
| DVD | Un-P3-D7 | Yes | |
| SAS port | Un-P2-T1 | No | |
| Embedded SAS controller | Un-P1-T9 | No | |
| Control panel | |||
| Control panel | Un-D1 | No | See Control panel and signal cables for the 8231-E2B system. |
| Temperature sensor | Un-D1 | No | |
| Control panel - USB port | Un-D1-T1 | No | |
| Server firmware | |||
| Server firmware | Um-Y1 | ||