DCM300 and DCM320 Adjustment Procedures
Handheld and Benchtop Instruments Basic Service
13
3. Place the bottom cover back on the meter and hold it in place. (The
continuity buzzer will not sound during the following adjustments without
the cover in place.)
4. If the buzzer does not sound, use a small flat-tipped screwdriver to adjust
VR4 until the buzzer sounds. You will have to remove the bottom cover to
make the adjustment and then replace the cover to make the test.
5. If the buzzer does sound, use a small flat-tipped screwdriver to adjust VR4
until the buzzer does not sound. After that, use the screwdriver to adjust VR4
until the buzzer sounds again. (Remove the cover to adjust; replace the cover
to test.)
6. When you complete all adjustments, turn the multimeter off and replace the
bottom cover. Do not pinch the battery leads between the case halves during
reassembly.
VR3
VR4
VR1
VR2
Figure 2: Adjustment Locations
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