Agilent Technologies 2712A, 2948 manual Service TOOLS, HELPS, and Information

Model 8904A Service

8-4. SERVICE TOOLS, HELPS, AND INFORMATION

Printed Circuit Board Extractor

APrinted Circuit Board Extractor (HP 08904-00012) is suppliedas part of this manual. It eases removal of the A3 and A10 Output Assemblies. It hooks under the board or the metal board shield so the board can be pulled off the mounting studs.

Assembly, Parts, and Cable Locations

The exploded view drawings at the end of Section 6 will assist in locating circuit board assemblies, cables, and mechanical hardware.

For the A3 and A10 assemblies only, the locations of individual components mounted on printed-circuit boards are shown adjacent to the schematic diagram on the appropriateservicesheet. The part reference designator is the assembly designator plus the part designator. For example, A3R9 is resistor R9 on the A3 assembly. For specific component descriptions and ordering information, refer to Table 6-3,Replaceable Parts, in Section 6. Mechanical chassis parts have reference designators with no prefix letter.

Other Service Documents

Service Notes, Manual Updates, and other service literature are available through Hewlett-Packard. For further information about Manual Updates, refer to Volume 1, paragraph 1-11.

Recommended Test Equipment and Accessories

Test equipment and test accessories required to maintain the Multifunction Synthesizer are listed in Table 1-2.Equipment other than that listed may be used if it meets the listed critical specifications.

8-5. SCHEMATIC SYMBOLOGY AND SCHEMATIC DIAGRAM NOTES

Table 8-1summarizes the symbology used in presenting many devices found in the instrument. The logic symbols used in this manual are based on the Institute of Electrical and Electronic Engineers (IEEE) in IEEE-STD 91-1984, Graphic Symbols for Logic finctions. This publication may be purchased from:

Institute of Electrical and Electronic Engineers

345 East 47th Street

New York, NY 10017

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