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e Maintenance
Handpieces
The following "Heater Assembly Checkout Procedures" (Table 4) are applicable to all PACE handpieces except for
the TT-65 ThermoTweez & DTP-80 Dual ThermoPik handpieces. Refer to the respective handpiece manuals for
troubleshooting procedures pertinent to those handpieces. Use the Digital Readout Message Codes ("E-1", "E-
2", "E-3" or "E-4") listed on Table 4 (under "POWER SOURCE") as a guide to pinpointing any malfunction
associated with the handpiece.
Perform the "Heater Assembly Checkout Procedures" shown below with the handpiece (and heater) at room
temperature. If the handpiece is warm, resistance reading will be different from those shown in the table below.
Symptom
Checkout Procedure
No heat
Check resistance - Pin 2 to Pin
Refer to "Heater Specifications" .
If resistance is high
Check resistance - Pin 3 to Pin
If circuit reads open
Handpiece
Check resistance - Pin 3 to Pin
overheating
If less than 105 ohms -
Fuse blows
Check resistance - Pin 2 to Pin
when unit is
Refer to "Heater Specifications"
turned on.
column. If resistance is low -
No Ground
Check resistance - Pin 4 to
on Tip.
NEW Tip. Resistance should
less than 2 ohms. If not -
Table 5. Heater Assembly Checkout Procedures
Figure 26. Handpiece Connector Plug
Cause
Solution
Open Heater
Replace heater
Open Sensor
Replace Heater
Shorted Sensor
Replace Heater
Solder short in
Remove Short. Replace
Handpiece.
Heater Assembly & Fuse
Shorted Heater
Replace Heater Assembly
Fuse F1.
Oxidation
Clean heater bore
in Heater Bore.
proper wire
Defective Heater Replace Heater
Heater
Specifications
SX-80 = 8 - 10 ohms
PS-90 = 8 - 10 ohms
TP-65 = 9 - 11 ohms
TJ-70 = 6 ohms
53
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