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4. Refer to the Test section and carry out the procedure
for the Current Output(s) Test 7 (page 39). If the
current output operates properly in the Test mode,
re-check the Program mode parameters (page 26 or
Software Ref. Sheet, page 55) if already filled out).
Pen(s) do not operate
1. Verify that the Program mode parameters are properly
set (page 26 or Software Ref. Sheet, page 55, if
already filled out).
2. If the process value in the display exceeds the chart
upper or chart lower values selected in the Program
mode, the pen will appear stuck at the chart upper or
lower edge respectively. Re-configure values as
needed by the application (may require a new chart).
3. Perform Test 8 as described in the Test section of the
manual (page 39). If the pen(s) operate(s) in Test 8,
perform the pen calibration, Cal 9, as described in the
Calibration section of the manual (page 36). Return
the instrument to the
oPEr
and check the operation of
the pen(s).
4. For software revision R2.99 and below, perform Test
9 as described in the Test Section of the manual
(page 39). If the pen feedback voltage does not vary,
check the pen Potentiometer Segment board for
proper ribbon cable connection to the Processor
board (Appendix A-1, page 46) and that the pen
position fingers are making contact with Potentiometer
Segment board.
5. For software revision R2.99 and below, inspect to see
that the Potentiometer Segment of the pen feed back
is clean. Use a non-residue type cleaner that does
not affect the plastic to clean the segment if
necessary.
6. Verify the instrument is not in Change Chart function.
Error Code Displayed
SnSr
- Sensor Break or
1. Inspect the sensor for proper operation and
Over Range
connection to the instrument. Acceptable sensor
ranges for the instrument are listed in the
Specifications section of Appendix D (page 53).
2. Verify that the Program mode input selection matches
the sensor input connected (page 26 or Software Ref.
Sheet, page 55, if already filled out).
3. Check that the input conditioning jumpers on the
processor board (Appendix A-1, page 46) are in the
proper position for the sensor input. Check that the
jumpers are in the proper position for the Terminal
Board where the sensor is connected.
4. Perform the calibration procedure(s), as described in
the Calibration section (page 35), for the sensor input
type.
Summary of Contents for MRC 7800
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