Service Manuals, User Guides, Schematic Diagrams or docs for : Agilent HP 8904A Service Notes 2

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.



Image preview - the first page of the document
HP 8904A Service Notes 2


>> Download HP 8904A Service Notes 2 documenatation <<

Text preview - extract from the document
                                                                                   8904A-05
    S          E      R        V           I    C        E                N        O         T          E
                                                                 SUPERSEDES: None

      8904A Multifunction Synthesizer

      Procedure For Restoring RAM Data

      Parts Required: None

      Situation:
      The A2 Digital Assembly in the 8904A Multifunction Synthesizer contains RAM memory
      that requires battery backup. If the battery fails, the contents of RAM will be lost which
      will cause the unit to fail on power up. To prevent this from occurring, it is very important
      to have your customer replace the battery in the 8904A every five years by carefully fol-
      lowing the battery replacement procedure described in the 8904A Service Manual, P/N
      08904-90008. Failure to correctly follow the battery replacement procedure could also
      interrupt the contents of RAM, causing an 8904A failure.

      If a battery failure occurs, use the following procedure to restore RAM data on the A2
      assembly. This procedure can only be performed by a qualified Agilent Service Center.

      After the battery is replaced, apply a generic adhesive label to the 8904A rear panel with
      "Replace Battery MM-YY" on it, where MM (month) YY (year) is today's date plus 5
      years. For example, if a battery was replaced 10-93 the label should read "Replace Battery
      10-98".




                                                                                        Continued

                                                                DATE: 24 September 1993

ADMINISTRATIVE INFORMATION

SERVICE NOTE CLASSIFICATION:

                               INFORMATION ONLY
       AUTHOR:                   ENTITY:                          ADDITIONAL INFORMATION:

         LHL                      1000



◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo