22
REPAIR
SYMPTOM CHECKOUT PROCEDURE CAUSE SOLUTION
HEATER
SPECIFICATIONS
No heat Check resistance - Pin 2 to Pin 5.
Refer to handpiece manual for
resistance tolerances.
If resistance is high - Open Heater
Replace Heater
Assembly.
SX-70 = 8 - 10
ohms
SP-2A = 8 - 10
ohms
SP-1A = 10 - 12
ohms
TP-65 = 9 - 11
ohms
TJ-70 = 6 - 8 ohms
Check resistance - Pin 3 to Pin 6.
If circuit reads open -
Open Sensor
Replace Heater
Assembly.
Handpiece
overheating
Check resistance - Pin 3 to Pin 6.
Resistance should be 110 ohms.
If circuit reads less than 105 ohms
-
Shorted Sensor
Replace Heater
Assembly.
Fuse blows
when unit is
turned on.
Check resistance - Pin 2 to Pin 5.
Refer to handpiece manual for
resistance tolerances.
If resistance is low -
Solder short in
Handpiece.
Remove Short.
Replace Heater
Assembly & Fuse F1.
Shorted Heater Replace Heater
Assembly & Fuse F1.
No Ground
on Tip.
Check resistance - Pin 4 to a
NEW Tip. Resistance should be
less than 2 ohms.
If not -
Oxidation buildup
in Heater Bore.
Clean Heater Bore
using appropriate
wire brush.
Defective Heater Replace Heater
SENSATEMP HANDPIECES
The following "Heater Assembly Checkout Procedures" are applicable to all PACE SensaTemp handpieces
except for the TT-65 ThermoTweez handpiece. Refer to either of the TT-65 manuals (P/N 5050-0300 or
5050-0336) for troubleshooting procedures pertinent to that handpiece.
Perform the "Heater Assembly Checkout Procedures" shown below with the handpiece (and heater) at room
temperature. If the handpiece is warm, resistance readings will be different from those shown.
Table I. Heater Assembly Checkout Procedures
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