IBM Nways 2216, Service And Maintenance Manual

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Chapter 1. Problem Determination
Note: The 2216 service representative will need to have the diagnostics run
remotely by the operator at a station connected via the modem. Alternatively, the
servicer can run the diagnostics on site through an ASCII terminal connected
directly to the 2216.
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2216 Power Supply
The power supply panel contains:
¹
The power switch, which is used to power ON or OFF the 2216
¹
The Overcurrent Reset switch, which resets all current-limit circuits for the
+12 V and -48 V outputs at the same time.
System Card LEDs
After power-on-reset (POR), the green and yellow LEDs will remain on until
successful completion of the power on tests (which will be under 2 minutes). The
green LED will begin blinking, which indicates that the code is being loaded into
memory. The green LED will be switched on to indicate that the system code is
operational.
Note: If the 2216 is waiting for the power-on password, the green LED is off. If
you do not have the console attached, you will not know that the system is waiting.
Looking at the LEDs may lead you to believe that you have a hardware problem.
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Copyright IBM Corp. 1997
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