Pace 20A, Руководство по эксплуатации и техническому обслуживанию, Страница: 21 / 27

19
Corrective Maintenance
Power Source
Most malfunctions are simple and easy to correct. Refer to Table II below to clear
these malfunctions.
Symptom Probable Cause Solution
No power to system. Blown Fuse Check handpiece using Table III . Replace the
fuse (located in the AC Receptacle/Fuse Holder)
with one of same value (see Table V parts list).
No heat on handpiece. Defective Heater See Table III below or refer to handpiece Manual.
Table II. Power Source Corrective Maintenance
Handpieces
The following “Heater Assembly Checkout Procedures” (Table III) is applicable
to all PACE SensaTemp handpieces used with the ST 20A system except for the
ThermoTweez (TT-65) handpiece. Refer to either of the TT-65 manuals (5050-
0300 or 5050-0336) for troubleshooting procedures pertinent to that handpiece.
Perform the procedures with the handpiece (and heater) at room temperature. If the
handpiece is warm, resistance readings will be different from those shown.
Disconnect the handpiece from the power source. Use a meter to check resistance
across the handpiece connector plug pins as outlined in the “Checkout Procedure”
column.
Table III. Heater Assembly Checkout Procedures
Symptom Checkout Procedure Cause Solution
Heater
Specifications
No heat Check resistance - Pin 2 to
Pin 5. Refer to "Heater
Specifications" column.
If resistance is high - - Open Heater Replace Heater
Assembly.
SP-1A
SP-2A
SX-70
TP-65
= 10-12 ohms
= 8-10 ohms
= 8-10 ohms
= 9 - 11 ohms
Check resistance - Pin 3 to
Pin 6. If circuit reads open - - Open Sensor Replace Heater
Assembly.
Handpiece
overheating
LED is Red Check resistance - Pin 3 to
Pin 6. Resistance should be
110 ohms. If resistance is
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 "Heater
Specifications" column. If
resistance is low - - Solder short in
Handpiece. Remove Short.
Replace Heater
Assembly & Fuse1.
Shorted Heater Replace Heater
Assembly & Fuse.
No Ground
on Tip. Check resistance - Pin 4 to a
NEW Tip. Resistance should
be less than 2 ohms. If not - - Oxidation in
Heater Bore. Clean Heater Bore
using appropriate wire
brush.
Defective Heater Replace Heater
Assembly.
Connector
Plug Pinouts