ScopeMeter® Test Tool
Disassembly and Reassembly Procedures
57
How to Access the Top Side of PCA
Most of the measurement points are located on the top side of the PCA.
For access to this side, remove the upper plate (shielding lid):
1. Remove the four screws M3x6.5 (total length) with a spring-washer (left side, right side, and
bottom side).
2. Remove the four screws M3x10 (total length) that are grouped in a square around the
sampling chip N2000.
3. Observe how the screening plate fits onto the lower chassis before you remove this plate
to access the top side of the PCA.
How to Access the Bottom Side of PCA
To avoid contaminating the flex cable contacts with grease from your fingers, wear cotton
gloves or do not touch these contacts. Contaminated contacts might not cause immediate
instrument failure. Failures typically show up when contaminated instruments are operated in
humid areas.
To access:
1. Unlock both flat cables by shifting the connector latch at the left and right edge with a small
screwdriver. The latch is an integral part of the connector body. See
.
Figure 21. Flat Cable Connector
2. Remove the flat cables from connector X9303 (to LCD) and J9414 (to keyboard).
3. Remove the four screws M3x10 that fix the PCA to the lower chassis (shielding assembly).
