Agilent Technologies 35670-90066 LEDs should sequence through 00 clear LEDs with 00 remaining

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

Step 3. Determine if the Memory or Display assembly is causing the failure.

• Set the power switch to off ( O ).

• Reconnect the Memory assembly to the CPU assembly.

• Set the power switch to on ( l ) while watching the power-on LEDs.

G	The LEDs should sequence through 00 (clear LEDs) with 00 remaining	on the
	LEDs.
	• Set the power switch to off ( O ).
	• Reconnect the display cable to A7 P2.
	• Set the power switch to on ( l ) while watching the power-on LEDs.
	The LEDs should sequence through 00 (clear LEDs) with 00 remaining	on the

LEDs. The following is an example of the messages displayed when the CPU and memory power-on tests pass. The numbers in the messages will most likely be different in your analyzer.

Copyright 1988, 1990, 1991, 1992, 1993,

Agilent Technologies Company,

All rights reserved.

LEDs

MC68030 Processor

MC68882 Coprocessor

Bootrom revision A.01.17

Main RAM

Testing 8388608 bytes at 0x06c00000

Program ROM

Copyright 1991, 1992, 1993, Agilent Technologies Company

Booting System

•If the screen is defective or blank, go to page 4-22,‘’To troubleshoot display failures.’’

•If there is an error message, use the table on page 4-15in the ‘’To troubleshoot power-up failures’’ procedure to determine the probable faulty assembly.

•If the failure still is not isolated, go to page 4-25,‘’To troubleshoot IIC bus failures.’’

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