DENTSPLY 28H Service Manual download pdf (Page 20)

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This troubleshooting section is meant for use by qualified Cavitron

Service Technicians.

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Intermittent scaling power or no

scaling power.

1. Insert malfunction.

2. Insert is not pushed in far

enough for automatic pick-up.

3. Malfunction in Steri-Mate™

Handpiece.

4. Bent or missing electrical pin in

Steri-Mate™ Handpiece.

5. Open or intermittent wires in

handpiece cable assembly.

6. Loose wiring or defective solder

joint in the unit wiring

7. Foot Control battery weak.

8. Foot Control not synchronized

to the unit.

1. Test with another Cavitron

insert. If test insert

works properly, discard the original insert.

2. a. Check if insert is fully seated in the handpiece.

b. If a handpiece soft grip is being used, verify

that the grip is flush with the hard plastic of the

insert port. Refer to the Installation

Instructions provided with the soft grip for

correct installation.

3. Replace Steri-Mate™ Handpiece.

4. Replace Steri-Mate™ Handpiece.

5. Install a working Steri-Mate™ Handpiece on the

cable. Unplug the Handpiece cable connector at J3

of the Power Drive PC Board and check the

continuity of the wires.

a. Connect the ohmmeter between RED-GRN wire

terminals. Flex the handpiece cable and check

for intermittent readings. If the ohmmeter

reading is not consistent or it is indicating an

open circuit, the handpiece cable assembly is

likely to be damaged and should be replaced.

b. Connect the ohmmeter between WHT-GRN wire

terminals and repeat the procedure above.

6. Troubleshoot the unit wiring and connectors.

7. a. Check information center for Low Battery

light indication. Replace battery as needed.

b. Connect an auxiliary Foot Control cable

between the Foot Control and the unit. The

unit can be operated with the cable until the

battery is replaced.

8. a. Follow Directions for Use & Service Manual

instructions for Foot Control synchronizing.

b. Connect the auxiliary Foot Control cable

between the Foot Control and unit. Unit can be

operated with the cable until the Foot Control is

synchronized.

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DENTSPLY 28H Service Manual Page 20

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