Replacing The Lcd; Reassemble The Tester - Fluke 150X Series Calibration Manual

Replace the LCD
The display assembly consists of four pieces as shown in
Translucent light-dispersing back panel

Flexible elastomeric conducting strip

Plastic bezel for housing the components of the assembly

Glass LCD

With the display assembly removed from the PCA, use this procedure to replace the LCD:
1. Lift the translucent light dispersing back panel from the plastic bezel.
2. Remove the pink and black elastomeric strip from its slot in the bezel.
3. Remove the old glass LCD from the bezel.
Make sure the new LCD is clean (free of lint and fingerprints) before you place it in
position in the bezel.
4. Position the new glass LCD 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.
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. Hold the display assembly (face down) in one hand and 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 panel. After the display assembly is in position, press
(below the display) the bezel against the PCA to lock it into place. Listen for the tab on the
bezel to snap (lock) into position on the PCA.
8. Install the two screws that attach the PCA to the bezel to secure the PCA to the display
assembly. These screws also ensure contact between the glass LCD, the elastomeric strip,
and the PCA.

Reassemble the Tester

To reassemble the Tester, logically reverse the previous disassembly procedures. In the
process, make sure to re-establish all electrical connections, specifically, the elastomeric strip
for the LCD, the red and black plastic shields for the input terminals, and the two spring
contacts for the Insulation Test Probe. Also make sure all parts are correctly aligned and
positioned. Do not force-fit any of the parts into position.
Figure
Note
Insulation Testers
Remove the PCA
5:
11