ConMed System 2450 - Page 30

4-20
Err
Code
Description Possible Cause Things to check Correction
114 Display or
keyboard SPI
communication
failure
Communication between the
Control/Display Board and the
Display assembly over the SPI
bus is faulty.
Cycle system power and deter-
mine if this error is repeated.
Check SPI_SCK, SPI_MOSI,
and SPI_MISO to see signals
toggle.
Replace the cable
between the Display
and the Controller.
Replace the Control/
Display Board.
Replace the Display
assembly.
122 System
Controller flash
program CRC
does not match
the calculated
CRC
The self-check CRC for the
System Controller is not inter-
nally consistent, indicating an
error in the stored software.
Cycle system power and deter-
mine if this error is repeated.
Replace the Control/
Display Board.
135 A.R.M. calibra-
tion (10/150
Ohm) EPROM
CRC failed
The CRC for the calibration
coefficient memory is not self
consistent, indicating an error
in the stored calibration coef-
ficients.
Recalibrate the A.R.M. system.
See section 4.6.
Check J1 connector
on the Power Board.
Repair ARM circuit-
ry on Power Board
or replace Power
Board if necessary.
Replace the Control/
Display Board if
the system will not
calibrate.
136 A.R.M. circuit
dropped below
.4V (circuit
failed)
The A.R.M. circuit on the
Output assembly or the A.R.M.
sensing circuit on the Control/
Display Board has failed.
Verify proper voltage on the
VARM signal entering the
Control/Display Board.
Repair or replace
the Power Board if
VARM entering the
Controller is faulty.
Replace the Control/
Display Board if
VARM appears cor-
rect.
138 Monitor calibra-
tion EEPROM
CRC failed
The CRC for the calibration
coefficient memory is not self
consistent, indicating an error
in the stored calibration coef-
ficients.
Recalibrate the entire system. Replace the Control/
Display Board if
the system will not
calibrate.
139 During calibra-
tion, not all
points were
entered for the
mode
The calibration was not com-
pleted in the correct manner.
Recalibrate any uncalibrated
modes. See Section 4.6.
Replace the Control/
Display Board if
the system will not
calibrate.
140 A calibration
EEPROM CRC
failed (POST
ERROR)
The CRC for the calibration
coefficient memory is not self
consistent, indicating an error
in the stored calibration coef-
ficients.
Recalibrate any un-calibrated
modes. See Section 4.6.
Replace the Control/
Display Board if
the system will not
calibrate.
141 Test and cal dip
switches are both
turned on
The Calibration and Test
Configuration Dipswitches are
both in the ON position. At
least one of these must be in the
OFF position.
Change the Calibration and Test
Configuration Dipswitches to the
desired state, cycle system power,
and determine if this error is
repeated.
Replace the Control/
Display Board.