Troubleshooting 47
Chapter 6. T
ROUBLESHOOTING
If your PCI ESCON Adapter fails to initiate successfully this chapter will provide you
with some general troubleshooting guidelines to help you identify and fix your
problem.
If after you have been through this troubleshooting chapter you are still unable to
make your adapter work properly please refer to the section titled “Help and Service
Information” on page 53 for information on obtaining help.
Hardware
The ESCON adapter includes two Light Emitting Diodes (LEDs) on the back edge of
the adapter. These LEDs are located just below the ESCON connector and can be
used to help isolate whether a problem is hardware or software related.
Each LED will illuminate in one of three colors. The top LED illuminates Red,
Yellow, or Green. The bottom LED illuminates Red, Orange, or Green. When the
server’s power is turned on both LEDs should always be illuminated. Table 6-1
summarizes the use of each LED.
Color \ LED
Top LED
Bottom LED
OFF
Power Off
Power Off
Yellow
POST in Progress
Emulation Loaded,
Channel Offline
Red
POST Failed
Emulation Not Loaded
Green
POST Ran Successfully
Channel Online
Table 6-1. Status LED Summary
As soon as the system is powered on, under normal operation the ESCON adapter
executes it’s own Power On Self Test (POST) and then loads the emulation firmware.
Follow the steps below to determine if the adapter has powered on successfully and is
operational.
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