Opening The Bottom Case; Removing The Pca - Fluke 150 Series Calibration Manual

150X Series
Calibration Manual

Opening the Bottom Case

Removing the PCA

12
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With the battery door removed, the next step in disassembling the Meter is to remove the
bottom case. Use the following procedure to remove the bottom case:
When removing the back cover, it is not necessary to remove the fuse or the
batteries.
1. Locate the four Philips head screws on the bottom case, two next to the batteries and
two next to the fuse.
2. Using a Philips screwdriver, remove the four screws.
3. Separate the front and bottom cases at the fuse-end the Meter. Tilt the freed end of
the cover up, and lift it away from the top case.
To install the bottom case, first, position and press together the display-end
of the top and bottom cases. Then, prior to installing all four screws, press
the fuse-end of the covers together.
With the bottom case removed, the next step in disassembling the Meter is to remove the
printed circuit assembly (PCA). Refer to Figure 3 and use the following procedure to
remove the PCA:
1. One Philips screw attaches the PCA to the top case. Locate the screw near the center
of the PCA, and remove it.
2. Two chrome plated springs on the PCA form an electrical connection (clip) to the
two recessed INSULATION(+) terminals on the top case. Break these connections by
carefully pulling each of the springs back and away from the terminals. See Figure 4.
Figure 4. Insulation Terminal Clips
Note
Note
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