ConMed Hyfrecator 2000 Service Manual page 67

See Section 4.4.1 for a discussion of troubleshooting using Fault Codes.
Controller-Generated Fault Codes
Fault Code
E1 - E3
E4
E5
E6
E7
E8
E9
Appendix
Fault Codes
Meaning
Control microprocessor process errors.
Power adjust overflow.
Mode change during power slew.
Control EEPROM read error.
Control EEPROM write error.
Pencil button or footswitch
contact closure sensed on
power-up (before POST).
HVPWM duty set over 97.5%.
Service mode: A1J2 short
removed with "--" display.
Possible Remedies
Replace A1U1
Possible user error. If can't duplicate, and
power adjustment and mode selection is
correct individually, replace A1U1.
Enter Service Cal and readjust High
Mode Offset and Gain up one and back
to restore defaults. If Run Mode still
shows E5, replace A1U3 and recalibrate.
Normally encountered only after making
power or cal changes. Verify SDA.C &
SCL.C swing 0 to +5V during POST
and U3 power, gnd are good. Otherwise,
replace A1U3 & recalibrate.
Verify /ACTIVE.C, /POWDN and
/POWUP all +5V immediately on
power up with no accessory connected to
A2J2. If correct, repeat with accessory
connected, otherwise possible shorted
signal line. Otherwise, shorted accessory
lines, switches.
If this occurs only at higher power
settings, check RF output power;
possible "weak" HV , PA drive, bad part
in RF generator or output sections. If
RF output is excessive, recalibrate.
Otherwise, replace A1U1.
Verify VMODE.C voltages in range
at all 3 mode switch settings.Verify mode
switch slider position correct and
touching A1. Clean mode switch contact
pads.
2000
A-1