28
REPAIR
Table III. Corrective Maintenance, Power Source Cont'd
POWER SOURCE CONT'D
Contact PACE Customer Service at Tel. (301) 490-9860, FAX (301) 604-9215 to obtain any replacement parts.
Refer to the "Replacement Parts" section of this manual for part numbers.
SYMPTOM PROBABLE CAUSE SOLUTION
MicroChine Status LED
continuously illuminated
Red in color.
Shorted SensaTemp
handpiece or accessory on
Thermal Management Center.
Turn system power OFF for 1 minute.
Disconnect handpieces and
accessories. Turn system power ON
and run MicroChine. LED will turn off if
the problem is caused by a handpiece or
accessory. Repair handpiece or
accessory.
Multifunction pcb defect. Replace Multifunction pcb.
MicroChine Probe Brake
activates prematurely.
Probe Brake test lead is
connected to or exciting a
circuit having less than 500
ohms resistance to ground.
Remove ground lead from pcb.
MicroChine continues to run
after release of finger switch or
foot pedal.
Defective MicroChine
handpiece.
Refer to Table II to check MicroChine
handpiece. Replace MicroChine
handpiece if defective.
MicroChine Probe Brake
reacts sluggishly or is
inoperable.
Probe Brake test lead is
connected to inappropriate
conductor on workpiece.
Connect Probe Brake test lead to proper
conductor.
Bit in MicroChine is not
conductive (non metallic).
Install conductive bit.
Defective MicroChine
handpiece.
Replace handpiece.
Multifunction pcb defective. Replace Multifunction pcb.
MicroChine will not operate.
Probe Brake LED is illuminated
Green in color.
Damaged Power Receptacle. Replace Power Receptacle.
Defective MicroChine
handpiece.
Replace handpiece.
Multifunction pcb defective. Replace Multifunction pcb.
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