Partlow MRC 7000 Installation & Operation Manual page 47

Er 2 - External RAM
Failure
Er 3 - EPROM Checksum
Failure
Er 4 - RTD Mismatch Error
Er 5 - No Zero Crossings
Detected
Er 6 - AC line below 43 HZ
Er 7 - AC line over 64 HZ
Er 8 - Cal 2 Volt Input
Error
Er 9 - ADC Reference
Number Error
Er10 - ADC Reference
Voltage Error
Er11 - Cold Junction
Compensation Error
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
1. Perform the steps listed for Er 1 except that
the EPROM (U7) on the Processor board should be
inspected.
1. Check the connections to the instrument for the RTD
Input Calibration (CAL5) as described in the
Calibration section (page 37). Repeat the RTD Input
Calibration.
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
2. Connect the instrument to another AC power source.
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
2. Connect the instrument to another AC power source.
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
2. Connect the instrument to another AC power source.
1. Check that 50 mVDC is properly connected to the
instrument and is within the tolerance limits as
indicated in the CAL2 procedure of the Calibration
section (page 35).
2. Turn off the power to the instrument and open the
cover. Loosen the platen hold down screw and swing
the platen open. Inspect the Processor board
(Appendix A-1, page 50) to insure that the input
conditioning jumper JU4 is in the non-volt position.
The jumper must be in the non-volt position to perform
the CAL 2 procedure properly. Close the platen
and tighten the hold down screw. Close the cover and
turn on the power to the instrument.
3. Perform the CAL2 procedure as described in the
Calibration section (page 35).
1. Perform the CAL2 procedure as described in the
Calibration section (page 35).
1. Perform the CAL2 procedure as described in the
Calibration section (page 35).
1. Perform the CAL3 procedure as described in the
Calibration section (page 36).
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