7-3
Troubleshooting Operator Manual 056404-443
Table 7-2. Troubleshooting Chart, LCD Message
FAULT DISPLAYED FAULT DESCRIPTION FAULT ACTION
1 KEY ONLY Two pushbuttons are pressed at the same
time
Press one button at a time or replace Hand
Control for defective button.
DUAL COMMAND Commands are sent from the optional foot
pedal and the hand control at the same
time.
Hand control has priority.
REVERSE ORIENT Flex and Reflex are disabled in reverse
orientation.
Press REV. ORIENT button to change to
Normal Orientation.
LOW BATTERY Battery voltage below 23 V. Plug the power cord into facility power,
ensure power switch is ON and green AC
LED is ON.
LOCK AGAIN The pressure switch status does not
change after FLOOR LOCK is pressed or
status does change and FLOOR LOCK was
not pressed.
Inspect for oil leakage; verify pressure
switch connect; change floor lock valve
block.
WRONG USE Hand control pushbutton is pressed and
held for longer than one minute.
Release button or replace Hand Control for
defective button.
SENSOR DEFECT The sensor voltage is out of range
(0.3 - 4.7 V). LEVEL function is disabled.
Check sensor, wire and connection;
calibrate sensor; change sensor.
SENSOR FAIL Voltage difference between sensor and
expected value by control board. LEVEL
function is disabled.
Check sensor, wires and connection; verify
wiper contacts sensor over entire travel
(back and leg sections); calibrate sensor;
change defective sensor.
BATTERY FUSE Missing or blown fuse (fuse holder access
external to table base). Hand Control does
not turn ON without facility power.
Check fuse; plug the power cord into facility
power.
BATT DEFECT Battery voltages differ by more than 0.6 V. Check voltage of each battery; replace
battery.
CHARGER DEFECT Battery charger circuit in power supply is
defective or fuse F1 (inside the charger) is
blown.
Check battery fuse (external to table base);
change power supply.
POWER DEFECT Transformer too hot or fuse F2 (inside
power supply) is blown. Table still operates
on battery power.
Wait for transformer to cool (30-60 minutes);
change power supply.
PUMP DEFECT No hydraulic pump control; fuse F4 (inside
power supply) may be blown.
Change power supply.
VALVE DEFECT No valve control. Change control board.
MOTOR DEFECT No SLIDE motor control; SLIDE inoperative;
fuse F3 (inside power supply) may be
blown.
Replace sliding board.
MOTOR FAIL The power control is always on. SLIDE
inoperative.
Replace sliding board.
SLIDE DEFECT No SLIDE control. SLIDE inoperative. Change sliding board.
SLIDE FAIL SLIDE continuously operating. SLIDE
inoperative.
Replace sliding board.
PUMP FAIL Pump does not shut off. Change power supply.
BAD VERSION Hand control software version is
incompatible with control board software
version.
Change control board.