DCM910 Adjustment Procedures
12
Handheld and Benchtop Instruments Basic Service
Preparation for Adjustment
The following guidelines apply to all DCM910 adjustments.
H Perform all adjustments in a 21_ to 25_ C ambient environment with a
relative humidity of 75% or less.
H Before making any adjustment, warm up the current meter for at least
30 minutes.
H Do not alter any setting without reading the entire adjustment procedure first.
H Do not alter a setting unless a performance characteristic cannot be met at
the current setting.
H Read the Safety Summary at the beginning of this manual.
You must open the meter case to gain access to the internal adjustments.
1. Lay the meter face down on a flat work surface.
2. Remove the two screws from the case bottom with a Phillips-head
screwdriver.
3. Gently lift the end of the case bottom until it unsnaps from the case top.
4. Remove the three screws that secure the circuit board assembly to the case
top. Do not remove the screws that secure the circuit boards to each other.
5. To access the adjustments, lift the circuit board assembly far enough out of
the top case to expose the adjustments. See Figure 2 and the procedure that
follows.
To reassemble the meter following the adjustments, perform steps 2 through 4
above in reverse order.
Adjustment Procedure
To return your instrument to factory calibration, implement the following
procedures.
Use a small flat-tipped screwdriver to make the adjustments. Refer to Figure 2
for adjustment locations.
WARNING. Magnetic fields are produced that may cause a malfunction in heart
pacemakers, or damage to sensitive equipment.
Open the Meter Case
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