IBM 201 manual Identifying problems using LEDs, Power-supply LEDs

Identifying problems using LEDs

The LEDs are part of the light-path diagnostics built into the NAS 200 engine. The LEDs help you identify the type of system error that occurred. See the following sections for more information.

Power-supply LEDs

The AC and DC power LEDs on the power supply provide status information about the power supply.

Table 3 on page 49 describes the AC and DC power LEDs.

Note: The minimum configuration required for the DC good light to come on is:

vPower supply

vPower backplane

vSystem board (with pins 2 and 3 on J23 extension cable connected together to bypass the power switch.

48NAS 200 User’s Reference