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REPAIR
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.
S Y M P T O M
CHECKOUT
No heat
Check resistance - Pin 2 to Pin 5.
Refer to handpiece manual for
resistance tolerances.
If resistance is high -
Check resistance - Pin 3 to Pin 6.
If circuit reads open -
Handpiece
Check resistance - Pin 3 to Pin 6.
overheating
Resistance should be 110 ohms.
If circuit reads less than 105 ohms
-
Fuse blows
Check resistance - Pin 2 to Pin 5.
when unit is
Refer to handpiece manual for
turned on.
resistance tolerances.
If resistance is low -
No Ground
Check resistance - Pin 4 to a
on Tip.
NEW Tip. Resistance should be
less than 2 ohms.
If not -
Table I. Heater Assembly Checkout Procedures
22
PROCEDURE
C A U S E
Open Heater
Open Sensor
Shorted Sensor
Solder short in
Handpiece.
Shorted Heater
Oxidation buildup
in Heater Bore.
Defective Heater
S O L U T I O N
S P E C I F I C A T I O N S
SX-70 = 8 - 10
ohms
Replace Heater
SP-2A = 8 - 10
ohms
Assembly.
SP-1A = 10 - 12
Replace Heater
ohms
Assembly.
TP-65 = 9 - 11
ohms
Replace Heater
TJ-70 = 6 - 8 ohms
Assembly.
Remove Short.
Replace Heater
Assembly & Fuse F1.
Replace Heater
Assembly & Fuse F1.
Clean Heater Bore
using appropriate
wire brush.
Replace Heater
Assembly.
H E A T E R
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