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Problems with Status LEDs on the Base Unit
After a POST, the Base Unit Status LEDs should display the following pattern:
Power LED (green) ON
OK LED (green) ON
Fault LED (yellow) OFF
If any of the LEDs are incorrectly lit, follow the troubleshooting procedures listed below.
Power LED (green) is OFF after the power cable is plugged in.
Steps to Take:
1. Press the RESET button on the workgroup switch to check that the LEDs are functioning properly.
If only the OK and Fault LEDs light ON, then the workgroup switch is receiving power, but the Power LED is
KO. Call your IBM service representative. Failing part: Power LED.
If no LEDs light, then the workgroup switch is not receiving power. Call your IBM service representative.
Possible failing parts: Power Supply, Mother Board or Box.
OK LED (green) remains OFF after completion of POST.
Steps to Take:
1. Press the RESET button on the workgroup switch to check that the LEDs are functioning properly.
If only the Power and Fault LEDs light ON, then the OK LED is KO. Call your IBM service representative.
Failing part: OK LED.
If, after the POST finishes, the OK LED still does not light, there is a severe problem. Call your IBM service
representative. Possible failing parts: Mother Board or Box.
Fault LED (yellow) remains ON after completion of POST.
Steps to Take:
1. Press the RESET button on the workgroup switch to check that the LEDs are functioning properly. If, after the
POST finishes, the Fault LED remains ON, there is a severe problem. Call your IBM service representative.
Possible failing parts: Mother Board or Box.
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IBM 8285 Nways ATM Workgroup Switch:
Installation and User’s Guide
Summary of Contents for 8285 Nways
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