Pace PRC 2000 Service Manual page 33

REPAIR
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.
S Y M P T O M
MicroChine Status LED
continuously illuminated
Red in color.
MicroChine Probe Brake
activates prematurely.
MicroChine continues to
after release of finger switch or
foot pedal.
MicroChine Probe Brake
reacts sluggishly or is
inoperable.
MicroChine will not operate.
Probe Brake LED is illuminated
Green in color.
Table III. Corrective Maintenance, Power Source Cont'd
28
PROBABLE CAUSE
Shorted SensaTemp
handpiece or accessory on
Thermal Management Center.
Multifunction pcb defect.
Probe Brake test lead is
connected to or exciting a
circuit having less than 500
ohms resistance to ground.
run Defective MicroChine
handpiece.
Probe Brake test lead is
connected to inappropriate
conductor on workpiece.
Bit in MicroChine is not
conductive (non metallic).
Defective MicroChine
handpiece.
Multifunction pcb defective.
Damaged Power Receptacle. Replace Power Receptacle.
Defective MicroChine
handpiece.
Multifunction pcb defective.
S O L U T I O N
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.
Replace Multifunction pcb.
Remove ground lead from pcb.
Refer to Table II to check MicroChine
handpiece. Replace MicroChine
handpiece if defective.
Connect Probe Brake test lead to proper
conductor.
Install conductive bit.
Replace handpiece.
Replace Multifunction pcb.
Replace handpiece.
Replace Multifunction pcb.