Chapter Five: Maintenance and Troubleshooting
Troubleshooting
51
5. Connect two resistors to the sensor cable, as shown in Figure 4.
Pin J (15)
Pin A (7)
Pin B (6)
Pin H (2)
3K
1K
Figure 4: Sensor Cable Plus Two Resistors
This should produce a negative full scale reading,
±
10%, with the
RANGE SELECT
switch in the
SYS CHK
(System Check) position.
6. Connect a short circuit across the 1K resistor and place the
RANGE SELECT
in the x0.01
position. Adjust the
COARSE
zero control.
You should be able to adjust this control
±
40% of full scale. If you cannot adjust the
COARSE
zero control sufficiently, send the unit back to MKS for service. Refer to
Customer Support, page 19, for instructions.
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