Insulation Multimeters
Disassembling and Reassembling the Meter
19
Removing the LCD
With the PCA removed, the final step in disassembling the Meter is to remove the
LCD assembly from the PCA. Refer to Figure 6 and use the following procedure
to remove the LCD assembly:
1. Remove the two screws from the display end of the PCA.
2. Hold the PCA face down with the fuse-end of the PCA toward you. Locate the
screw-hole near the center of the assembly. This hole is the one used to
attach (with a screw) the PCA to the top case.
3. Now, locate the gray plastic tab just above and to the left of the hole. Using
your thumbnail press the tab down and toward the display end of the PCA.
This will release the LCD assembly from the PCA.
W Caution
To avoid damaging the plastic guide pins on the LCD assembly,
keep the LCD assembly parallel to the PCA when separating the
two parts.
4. Without tilting the PCA, lift it straight up and away from the LCD assembly.
5. To keep loose parts from falling away from the LCD assembly, keep it face-
down, and set it in a safe place.
Replacing the LCD
The LCD assembly consists of four pieces as shown in Figure 6:
• Translucent light-dispersing back panel
• Flexible elastomeric conducting strip
• Plastic Bezel for housing the assembly's components
• Glass LCD display
With the LCD assembly removed from the PCA, use the following procedure to
replace the LCD:
1. Lift the translucent light-dispersing back panel off of the plastic bezel.
2. Remove the elastomeric strip from its slot in the bezel.
3. Remove the old glass LCD display from the bezel.
Note
Make sure the new LCD display is clean (free of lint and finger
prints) before placing it in position in the bezel.
4. Position the new glass LCD display in the bezel; the silver face should face
the rear, and the stepped portion of the glass should be directly under the
elastomeric slot on the bezel.
5. Drop the elastomeric strip into its slot on the bezel.
6. Position the translucent light-dispersing back panel over the silver side of the
glass LCD display. Make sure the guide pins on the light dispersing back
panel are facing up and that they are on the side opposite the elastomeric
strip.
7. While holding the LCD assembly (face down) in one hand, position the PCA
(fuse side up) over the bezel; match the guide holes in the PCA with the
plastic guide pins on the bezel and the translucent light dispersing back
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