Section 5: Maintenance, Page 5—7
3. Loosen the two thumbscrews that are inserted through the notches in the back of the
circuit board cover.
Figure 5-4. Location of Thumbscrews
4. Carefully raise the circuit board cover so the back trough is completely exposed and
easily accessible.
Figure 5-5. Raising the Circuit Board Cover
5. Move the panel up and back, out of the way.
The circuit board cover is connected to the instrument by the two connectors of the
LOW STAIN and POWER lights. Rotate the panel carefully so the connectors are not
pulled loose.
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