Agilent Technologies 35670-90066 Binary, Hexa, ~Time LEDs, Description, DS5 DS9, decimal, Visible

Agilent 35670A			Troubleshooting the Analyzer
			To troubleshoot power-up failures
Binary	Hexa-	~Time LEDs	Description
(DS5) (DS9)	decimal	Visible
1111 1111	FF	200 ms on	A7 flashes LEDs
0000 0000	00	200 ms off
0000 1000	08	†	starting A7 test
0000 0010	02	†	A8 RAM DSACK test
0001 0100	14	†	starting A8 RAM test
0001 0110	16	†	starting A8 refresh test
0001 1100	1C	4s	starting A8 program ROM test
0000 0000	00	4s	clear LEDs
1010 0000	A0	†	A7 MFP test
1010 0001	A1	†	starting A7 DSP test
1010 0010	A2	†	fast bus test
0101 1110	AE	200 ms	front panel test
1111 1111	FF	Remain on

0 = LED off

1 = LED on

†When no failure occurs, these codes appear for only a very short time and probably won’t be visible.

•If the power-on LEDs display a code for more than 4 seconds, a failure occurred in the core assemblies or on the buses.

For additional information on the power-on test, see the ‘’Power-on Test Descriptions’’ on page 10-3.

Step 3. Determine the next step by comparing the power-on test results to the following table.

G	Power-on LEDs	Next Test
	LEDs stop and display a fail code.	CPU, memory, and
	A7 DS101 (green, run LED) is off.	buses, page 4-18
	LEDs pass, but the screen is defective.	Display, 4-22
	LEDs pass, but it takes more than 3 minutes before the keys are active. IIC Bus, page 4-25
	LEDs pass and screen appears normal, but keys do not function.

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