Fluke 5720A General Cleaning, Cleaning PCA’s, Access Procedures, Top and Bottom Covers

5700A/5720A Series II Calibrator

Service Manual

4-3. General Cleaning

To keep the Calibrator looking like new, clean the case, front panel keys, and lens using a soft cloth slightly dampened with water or a non-abrasive mild cleaning solution that does not harm plastics.

CAUTION

Do not use aromatic hydrocarbons or chlorinated solvents for cleaning. They can damage the plastic materials used in the calibrator.

4-4. Cleaning PCA’s

Printed circuit assemblies only need cleaning after repair work. After soldering on a pca, remove flux residue using isopropyl alcohol and a cotton swab.

4-5. Access Procedures

WARNING

Servicing described in this section is to be performed by qualified service personnel only. To avoid electrical shock, do not perform any servicing unless qualified to do so.

4-6. Top and Bottom Covers

Check that power is not connected to the Calibrator; the power control must be off, and the line power cord must be disconnected. Top and bottom covers are each secured with eight Phillips head screws (four front, four rear).

4-7. Digital Section Cover

The Digital Section is accessed through one top cover that is secured by six Phillips head screws.

4-8. Analog Section Covers

The Analog Section is enclosed with separate covers on top and bottom. The top cover is secured with seven Phillips head screws. The bottom Analog Section cover is secured with eight Phillips head screws (three short, five longer).

4-9. Rear Panel Removal and Installation

Detach the Rear Panel by removing the six hex head screws (three on each rear handle side) and the two Phillips head screws found along the side of the Fan Assembly. Refer to Figure 4-2 for screw locations.

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