Fluke 39 - Cleaning; Disassembling the Tester; Removing the Meter Case Bottom

39/41B
Service Manual
3-4
Follow these two rules for handling static-sensitive devices:
1. Handle all static-sensitive components at a static-safe work area.
Use grounded static-control table mats on all repair benches, and always wear a
grounded wrist strap. Handle boards by their nonconductive edges only. Store
plastic, vinyl, and Styrofoam objects outside the work area.
2. Store and transport all static-sensitive components and assemblies in static-shielding
bags or containers.
Static-shielding bags and containers protect components and assemblies from direct
static discharge and external static fields. Store components in their original
packages until they are ready for use.
3-6. Cleaning
Warning
To avoid electrical shock or damage to the tester, never allow
water inside the case. To avoid damaging the tester’s housing,
never apply solvents to the meter.
When the Tester requires cleaning, wipe it with a cloth that is lightly dampened with
water or a mild detergent. Do not use aromatic hydrocarbons, chlorinated solvents, or
methanol-based fluids when wiping the Tester.
3-7. Disassembling the Tester
The following paragraphs describe how to disassemble the Tester to the pca level. Start
and end your disassembly at the appropriate heading levels.
Caution
Always remove the case bottom first to avoid damaging the
Tester.
3-8. Removing the Meter Case Bottom
Perform the following procedure to remove the case bottom (Figure 3-1).
1. Make sure the Tester is disconnected from any live source, turned off, and all test
leads are removed from the input module.
2. Remove the two slotted screws on the battery cover (one is located under the hook)
and remove the cover.
3. Remove the batteries.
4. Remove the six Phillips screws from the case bottom.
5. Insert a thin non-sharp object (e.g., credit card or plastic tuning tool) between the
case bottom and the input module, and gently pry the case bottom away from the
input module. (Figure 3-1) When the seal between the case bottom and the input
module breaks, the case bottom will free itself.