West Control Solutions MRC 8000 - Manual (Page 60)

60
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 69).
2. Verify that the Program mode input selection matches
the sensor input connected (page 28 or Software Ref.
Sheet, page 72, if already filled out).
3. Check that the input conditioning jumpers on the
Processor board (Appendix A-1, page 62) 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 46), for the sensor input
type.
Hi - Input more than 10% 1. Perform the steps listed for the SnSr Error Condition.
Over Span (above)
Lo - Input more than 10% 1. Perform the steps listed for the SnSr Error Condition.
Under Span (above)
o - display overranged 1. If this error code is displayed as a Program or Alarm
(the “broken 6” Set mode parameter perform the CAL 1 procedure as
appears on the left described in the Calibration section of the manual
segment of the display) (page 46).
2. If this error code appears as part of the model number
during the power up sequence, follow the steps listed
for the "Model Number is not correct" condition
(page 56)
3. If this error appears, check the Program mode
parameter dPos, if not 0, change to 0 and see if the
error clears.
Er 1 - Microprocessor RAM 1. Turn off the power to the instrument. Wait 5 seconds,
Failure and turn the power on.
2. Turn off the power to the instrument. Open the
cover, and loosen the platen hold down screw. Swing
open the platen and inspect that the microprocessor
chip is properly seated in the socket located on
the Processor board (Appendix A-1, page 62). Close
the platen and tighten the screw. Close the cover and
turn on the power.
Er 2 - External RAM 1. Turn off the power to the instrument. Wait 5 seconds,
Failure and turn the power on.
Er 3 - EPROM Checksum 1. Perform the steps listed for Er 1 except that
Failure the EPROM (U7) on the Processor board should be
inspected.