Agilent 89410A Mods to the CPU and memory

89410A-09

SERVICE NOTE

SUPERSEDES: None

89410A Vector Signal Analyzer

Serial Numbers: 0000A00000/3416A02812

Modifications to CPU and Memory require new repair strategy.

Situation:

Due to a change in the manufacturing process of the flash ROM on the memory board, the
pinout of connectors between the CPU and memory has been changed to isolate the data and
address lines. This change causes the newer CPU and memory boards to be incompatible
with older CPU and memory boards. Both the CPU and memory board may need to be
replaced if there is a failure on either board. When replacing both the CPU and memory at
the same time the data stored in non-volatile memory will be lost if new procedures are not
used. The data in non-volatile memory includes the firmware options, serial number, and
calibration constant.

Solution:

When a failure occurs on either an A40/A41 CPU board with a date code less than 3804 or
an A42 memory board with a date code less than 3804, both boards will need to be replaced.
If the instrument is operational, follow the steps in the Preferred Procedure to retain the
non-volatile memory settings. If the instrument is not operational, follow the steps in the
Optional Procedure to restore the non-volatile memory settings.

ADMINISTRATIVE INFORMATION

SERVICE NOTE CLASSIFICATION:

INFORMATION ONLY

AUTHOR:

DHW

ENTITY:

A100

Continued

DATE: August 1998

ADDITIONAL INFORMATION:

PCO# A1-9801001

PCO# A1-9801002

© 1998 AGILENT TECHNOLOGIES
PRINTED IN U.S.A.

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Page 2 Service Note 89410A-09

Preferred Procedure: Saving and recalling non-volatil e settings

1. Obtain the servic e utility disk p/n 89410-19463.

2. Insert the disk in the 89410A disk drive.

3. Press the followin g ke ys to sa ve the non-volatile sett ings:
[System Util ity] [mor e ] [dia gnostics] [servi ce f unc tions] 1125 [enter ] [utilities]
[CPU/memory replacement] [Save config] [Continue]

4. Turn the power off and replace the CPU and memory board.

5. Turn the power on and pre ss the following key s to r eca ll the non-volatile set tings:
[System Util ity] [mor e ] [dia gnostics] [servi ce f unc tions] 1125 [enter ] [utilities]
[CPU/memory replacement] [Recall config] [Continue]

6. Remove the di sk f ro m the disk drive.

7. Press the followin g ke ys to ve r ify tha t the time and date are corr e ct:
[System Util ity] [mor e ] [time/date setup]

Optional Procedure: Restoring non-volatile memo r y se ttings

1. Replace the CPU and memory board.

2. Turn on the power.

3. Press the followin g ke ys to r e store the se ri al number:
[System Utility] [mor e ] [dia gnostics] [service f unc tions] 1125 [enter] [de fin e se­rial number] [89410 A serial number] (serial numbe r from the rear pane l) [ent er]

4. Press the followin g ke ys to ve r ify tha t the time and date are corr e ct:
[System Util ity] [mor e ] [time/date setup]

5. Perform the calibr a tor a djustment in the 8941 0A se rv ic e guide.

6. Verify the option configuration by pressing the f ollowing keys:
[System Util ity] [o ptions setup]

7. If the options conf iguration listed on the display does not ma tc h the options listed on
the rear panel, contact your nearest Agilent Sales and Service Office listed
in the Agilent Catalog for assistance or send an email message to Sup­[e-mail]

Please provide the following information:
Model Number: 89410A
Serial Number:
Options that are missing: State that you are hav ing tr ouble with a CPU/mem or y repa ir .