PFW1540: Problem isolation procedures
The PFW1540 procedures are used to locate problems in the processor subsystem or I/O subsystem.
If a problem is detected, these procedures help you isolate the problem to a failing unit. Find the symptom in the following table; then follow the instructions given in the Action column.
| Problem Isolation Procedures | |
|---|---|
| Symptom/Reference Code/Checkpoint | Action |
| You have or suspect an I/O card or I/O subsystem failure.You received one of the following SRNs or reference codes: 101-000, 101-517, 101-521, 101-538, 101-551 to 101-557, 101-559 to 101-599, 101-662, 101-727, 101-c32, 101-c33, 101-c70 | Go to PFW1542: I/O problem isolation procedure. |
| You have or suspect a memory or processor subsystem problem. You received the following SRN or reference code: 101-185 | Go to PFW1548: Memory and processor subsystem problem isolation procedure. |
| If you were directed to the PFW1540 procedure by an SRN and that SRN is not listed in this table. | Go to PFW1542: I/O problem isolation procedure. |
FRU identify LEDs
Your system is configured with an arrangement of LEDs that help identify various components of the system. These include but are not limited to:
- Rack identify beacon LED (optional rack status beacon)
- Processor subsystem drawer identify LED
- I/O drawer identify LED
- FRU identify LED
- Power subsystem FRUs
- Processor subsystem FRUs
- I/O subsystem FRUs
- I/O adapter identify LED
- DASD identify LED
The identify LEDs are arranged hierarchically with the FRU identify LED at the bottom of the hierarchy, followed by the corresponding processor subsystem or I/O drawer identify LED, and the corresponding rack identify LED to locate the failing FRU more easily. Any identify LED in the system may be flashed; see Managing the Advanced system Management Interface (ASMI).
Any identify LED in the system may also be flashed by using the AIX® diagnostic programs task "Identify and Attention Indicators". The procedure to use the AIX diagnostics task "Identify and Attention Indicators" is outlined in "diagnostic and service aids" in Running the online and stand-alone diagnostics.
