P
AGE
44
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, Alarm
(the "broken 6"
Set, or Preset mode parameter, perform the
CAL1
appears on the left
procedure as described in the Calibration section of
segment of the display)
the manual (page 35).
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
41).
3. If this error appears, check the Program mode
parameter
dPos
, if set to 1, change to 0 and see if the
error clears.
Er1
- 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
(U5) is properly seated in the socket located on the
Processor board (Appendix A-1, page 46). Close the
platen and tighten the screw. Close the cover and
turn on the power.
Er2
- External RAM Failure
1. Turn off the power to the instrument. Wait 5 seconds,
and turn the power on.
Er3
- EPROM Checksum
1. Perform the steps listed for
Er1
except that the
Failure
EPROM (U7) on the Processor board should be
inspected.
Er5
- No Zero Crossings
1. Turn off the power to the instrument. Wait 5 seconds,
Detected
and turn the power on.
2. Connect the instrument to another AC power source.
Er6
- AC line below 45 HZ
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.
Er7
- AC line over 65 HZ
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.
Summary of Contents for MRC 7800
Page 56: ...PAGE 56...
