Agilent Technologies 35670-90066 manual To troubleshoot CPU, memory, and buses failures, SW2

Troubleshooting the Analyzer	Agilent 35670A
To troubleshoot CPU, memory, and buses failures

To troubleshoot CPU, memory, and buses failures

Use this test to isolate the failure when the power-on LEDs show a fail code or the analyzer locks up during the power-up tests.

Step 1. Compare the LED fail code to the following table.

G	• Set the power switch to off ( O ).
	• Set the power switch to on ( l ) while watching the power-on LEDs.
	The power-on LEDs are on the A7 CPU assembly and are visible through the rear
	panel. To see the LEDs easier, remove the seven screws holding the rear panel to
	the analyzer and lean the rear panel back. This also gives you access to reset switch
	SW2.
	• Determine the probable faulty assembly by comparing the power-on LEDs
	fail code to the following table.
	The power-on LEDs are showing a fail code when the LEDs display a code for
	more than 4 seconds.

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