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Chapter 2 Service

Pre-Troubleshooting Information

Repair ConsiderationsElectrostatic Discharge

Electronic components and assemblies in the HP 53131A/132A/181A can be permanently degraded or damaged by electrostatic discharge. Use the following precautions when servicing the instrument:

1ENSURE that static-sensitive devices or assemblies are serviced at static-safe work stations providing proper grounding for service personnel.

2ENSURE that static-sensitive devices or assemblies are stored in static shielding bags or containers.

3DO NOT wear clothing subject to static-charge buildup, such as wool or synthetic materials.

4DO NOT handle components or assemblies in carpeted areas.

5DO NOT remove an assembly or component from its static shielding protection until you are ready to install it.

6AVOID touching component leads. (Handle by packaging only.)Surface Mount Repair

Surface mount components should only be removed using soldering irons or desoldering stations expressly designed for surface mount components. Use of conventional solder removal equipment will almost always result in permanent damage to the printed circuit board and will void your Hewlett-Packard factory warranty.

Disassembly and Reassembly Specifics

Refer to the Chapter 3, “Replacing Assemblies,” in this guide for complete disassembly and reassemble details, and Chapter 5, “Replaceable Parts,” for the appropriate exploded view of the instrument parts.

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Assembly-Level Service Guide