Agilent Technologies 35670-90066 manual To perform initial verification, Data appears, Failures.’’

Agilent 35670A	Troubleshooting the Analyzer
	To perform initial verification

To perform initial verification

Use this test to check signals that are vital to the operation of the analyzer. Step 1. Check the power select switch and fuse.

• Check that the POWER SELECT switch on the rear of the analyzer is set to

G	the AC position.
	• Check that the correct line fuse is installed in the rear panel fuse holder.
	For information on the power select switch and line fuse, see ‘’To do the incoming
	inspection’’ on page 2-5and ‘’To change the fuses’’ on page 2-10.
	Step 2. If the grid appears after power up but there is no response when keys are
	pressed, ckeck that the calibration routine is not locking up the analyzer.
G	• Set the power switch to off ( O ).
	• Set the power switch to on ( l ) and as soon as Booting System appears on the
	display, disable the calibration routine by holding [ Preset ] until Uncalibrated
	data appears.
	• If the keys are now active, go to page 4-37,‘’To troubleshoot self-test lockup
	failures.’’
	Step 3. If the analyzer powers up with failure messages, then locks up, but the grid

Gand lettering appear normal, go to page 4-15,‘’To troubleshoot power-up failures.’’

4-5