Dentsply Sirona Cavitron 300 Series User manual

Service Manual
Please read carefully and completely before operating unit.
Cavitron® 300 Series
Ultrasonic Scaling System

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Table of Contents
1. Service Troubleshooting and Analysis 3-10
2. Disassembly and Service Procedures 11-20
A. Top Cover and Touch Screen Removal 11
B. Fuse Testing Procedure 11
C. Fuse Replacement 11-12
D. Power Switch Replacement 12
E. Power Entry Module Replacement 12-14
F. Power Supply Assembly Replacement 14
G. Drive PCB Stack: PSOC PC Board (Upper PCB) 14-15
H. Drive PCB Stack: Power PC Board (Lower PCB) 15-16
I. Water Regulator/Solenoid Replacement 16-17
J. USB Connector Assembly Replacement 17
K. Handpiece Receptacle Replacement 17-18
L. FPGA Board Replacement (Back of Touch Screen) 18-19
M. Display Sub-Assembly Replacement 19-20
3. Service Parts & Diagrams 22-35
For the Cavitron 300 Series Ultrasonic Scaling System Instructions for Use
(Form No. 82493), please visit:
www.dentsplysirona.com/ifu
Consult Instructions
for Use

3
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis
This section is meant for use by qualified Cavitron Service Technicians.
Symptom/Cause Corrective Measures
Cavitron® 300 Series scaler
does not power up: touch
screen does not illuminate:
1. Faulty wall outlet.
2. Power cord not fully inserted
into unit or wall outlet.
3. Damaged power cord.
4. Fuse F3 and/or F4 blown.
5. Damaged On/Off switch.
1. Check wall outlet and if faulty take necessary corrective measures.
2. Ensure power cord is fully engaged.
3. Replace the power cord.
4. Replace internal fuses F3 and F4 with specified fuses.
5. Replace the On/Off switch.
Slo-Blo Fuses good. No
power to circuitry:
1. Unit is installed in a confined
area (such as a cabinet), or is
too close to a heat source to
insure proper air circulation
around unit.
2. Power Supply malfunction.
1. Power Off scaler to allow the internal temperature to lower. Then provide adequate
air circulation around unit.
2. Replace Power Supply assembly.
Slo-Blo Fuse F3 and/or F4
Failed:
1. Short in Power Supply
assembly.
2. Short in Power PC Board
assembly.
1. Replace the Power Supply assembly.
2. Replace the Power PC Board assembly.
Low insert scaling power or
insert stops vibrating when
contacting tooth surface:
1. Insert malfunction.
2. Ultrasonic PC board(s)
malfunction.
1. Test with another Cavitron® insert. If test insert works properly, discard the original
insert.
2. a. Return scaler to Dentsply Sirona Preventive SBU Product Service for factory
certified service.
b. Refer to Dentsply Sirona Preventive SBU – Product Service SOP PS-00211.

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1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis
Symptom/Cause Corrective Measures
Intermittent scaling power or
no scaling power:
1. Insert malfunction.
2. Malfunction in Steri-Mate™
(360) Handpiece.
3. Handpiece cable not seated
in Scaler receptacle.
4. Bent or missing electrical
pin in Steri-Mate™ (360)
Handpiece.
5. Open or intermittent wires in
handpiece cable assembly.
6. Loose wiring or defective
solder joint in the unit wiring
7. Foot Control batteries are
weak.
8. Foot Control not
synchronized to the unit.
9. Foot Control powered
Off. Low battery
indicated on display.
10. Foot Control malfunction.
1. Test with another Cavitron® insert. If test insert works properly, discard the original
insert.
2. Replace Steri-Mate™ (360) Handpiece.
3. Handpiece cable plug must be fully inserted and seated in the receptacle.
4. Replace Steri-Mate™ (360) Handpiece.
5. Install a working Steri-Mate™ (360) Handpiece on the cable. Unplug the Handpiece
cable plug at the scaler 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.
6. Troubleshoot the unit wiring and connectors.
7. a. Check display for Low Battery indication. Charge batteries if needed.
b. Connect an Auxiliary Foot Control cable between the Foot Control and the unit.
The unit can be operated with the cable while the batteries charge. Full charge
takes 4 hours.
8. a. Follow the Cavitron® 300 Series scaler Directions for Use and Service Manual
instructions for Foot Control synchronizing.
b. Connect the Auxiliary Foot Control cable between the Foot Control and scaler.
Scaler can be operated with the cable until the Foot Control is synchronized.
9. Press and hold red Power button on Foot Control for 4 seconds.
10. Connect the Auxiliary Foot Control cable between the Foot Control and the unit.
If the unit will not operate with the auxiliary cable connected, replace the Foot
Control. Follow the Cavitron® 300 Series scaler Directions for Use and Service
Manual instructions for Foot Control synchronizing.

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Symptom/Cause Corrective Measures
Handpiece heats up:
1. Insufficient water to cool
handpiece.
2. Air trapped in the handpiece.
3. Water filter is clogged with
debris.
4. Insert water passageway
clogged.
5. Handpiece cable not
supported during procedure.
6. Worn insert being used.
7. Operatory water supply
temperature is high.
1. Increase the setting on the handpiece lavage control until handpiece runs cool.
2. When the inserts are installed in the handpiece, hold the handpiece in an upright
position until the trapped air is removed and the water flows properly.
3. Replace the water filter.
4. Replace the Cavitron® insert and check operation.
5. Loop handpiece cable around arm or support with finger to prevent water
restriction.
6. Replace with a new Cavitron® insert. Worn inserts require higher power settings
producing more heat.
7. Flush water system before use or use a DualSelect Dispenser as a water source.
Insert vibrates but no water or
insufficient water flows from
the handpiece:
1. Low incoming dental office
water pressure.
2. Water filter clogged.
(Is Water Filter Icon lit?)
3. Handpiece cable water
tubing and wires twisted.
4. Damaged handpiece cable
flow control.
5. Obstruction or mineral
deposits in the water system
in the unit.
6. Water Regulator / Solenoid
out of adjustment.
1. Measure water pressure at dental office. Adjust incoming source water pressure to
specification. Water pressure should be 20-40 psi.
2. Replace the water filter when discolored or restriction occurs.
3. Remove restriction if possible or replace handpiece cable assembly.
4. Replace handpiece cable assembly.
5. a. Remove the insert and turn the handpiece flow control fully open. Observe the
water flow. If the flow is good then the obstruction is in the insert.
b. If the obstruction is not in the insert, then remove the handpiece water line at
solenoid and check the water flow. If flow is good, then the obstruction is in
handpiece tubing.
6. Adjust water regulator pressure according to Dentsply Sirona Preventive SBU –
Product Service SOP PS-00211.
No water flow from handpiece
without insert installed:
1. High dental office water
pressure.
1. Install a water pressure regulator on the main water supply line and reduce the
pressure to 20-40 psi.
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis

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Symptom/Cause Corrective Measures
Water spray from insert
is not properly covering
the operating area of the
activated tip:
1. Improper water flow
adjustment.
2. Insert is partially clogged.
1. Refer to “Cavitron® 300 Series Directions for Use” for instructions on water flow
adjustment.
2. Replace the insert.
Water drips from the
handpiece when not
operating:
1. Water Regulator / Solenoid
valve leaking due to trapped
debris.
1. Try plugging the water supply hose into an air source to blow out the dirt. If the
leak persists, replace the Water Regulator/Solenoid assembly. Be sure the external
hose filter is installed.
Water leak from the
handpiece while in operation:
1. O-ring worn on insert.
2. Water leak in handpiece
water tubing at handpiece or
inside the Steri-Mate™ (360)
Handpiece.
1. Replace the O-ring with genuine Cavitron® O-rings. O-rings are available in packs
of 12. Green O-Rings P/N 62605, Black O-Rings P/N 62351.
2. a. Unplug the Steri-Mate™ (360) handpiece from the cable and replace the small
O-ring on the connector. Part No. 79357 (12-Pack)
b. Replace the Steri-Mate™ (360) handpiece and/or cable assembly.
Water flow not controllable
by turning the handpiece flow
control knob:
1. Handpiece flow control
malfunction.
2. Malfunction of Water
Regulator / Solenoid
assembly.
1. Replace Handpiece cable assembly.
2. Replace the Water Regulator / Solenoid valve assembly. Adjust the water regulator
to specifications.
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis

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Symptom/Cause Corrective Measures
Intermittent activation or no
activation when stepping on
the Foot Control:
1. Foot Control batteries are
weak.
2. Foot Control too far from
Cavitron® 300 Series scaler
unit.
3. Foot control is not
synchronized to the scaler.
1. a. Check Foot Control battery condition as indicated by the battery display.
b. Connect the Auxiliary Foot Control cable between the Foot Control and unit.
The unit can be operated with the cable until the batteries are fully charged.
Full charge will take two hours.
2. The distance between the Foot Control and Scaler should be within 10 feet.
Relocate Cavitron® 300 Series scaler unit.
3. a. Follow the Cavitron® 300 Series scaler Directions for Use and Service Manual
instructions for Foot Control synchronization.
b. Connect the Auxiliary Foot Control cable between the Foot Control and the
Scaler. The Scaler can be operated with the cable until the Foot Control is
synchronized.
c. Replace the Foot Control. Follow the Cavitron® 300 Series scaler Directions for
Use and Service Manual instructions for Foot Control Synchronization.
Boost Power mode does not
activate. Diagnostic Display
does not indicate “Boost”
mode:
1. Foot Control not fully
depressed.
2. The Foot Control is
defective.
1. Depress the Foot Control fully. The “Boost” indication should be displayed.
2. Replace the Foot Control. Follow the Cavitron® 300 Series Directions for Use and
Service Manual instructions for Foot Control synchronization.
Inserts cannot be installed in
the handpiece properly:
1. O-ring on the insert is dry.
2. Incorrect or damaged O-ring
installed on the insert.
3. Metal P-Style inserts cannot
be used with Steri-Mate™
(360) handpieces.
1. Lubricate the O-ring with water. If the O-ring is swollen, worn or frayed replace it.
2. Replace the insert O-ring with Cavitron® O-rings. O-rings are available in packs
of 12. Green O-Rings P/N 62605, Black O-Rings P/N 62351.
3. Use Cavitron inserts with plastic or soft grips or use regular Steri-Mate™
handpieces.
Inserts slide out of Steri-
Mate™ (360) when scaling:
1. Water Regulator / Solenoid
set too high.
2. Handpiece water flow set
too high.
3. Insert O-ring worn.
1. Adjust Water Regulator / Solenoid to specifications.
2. Set Handpiece water flow control to approximate 35 cc/min.
3. Replace O-rings.
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis

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Symptom/Cause Corrective Measures
Purge mode does not activate:
1. The Steri-Mate™ (360) is not
installed on the handpiece
cable assembly.
2. Open coil or connection
on the Steri-Mate™ (360)
handpiece.
3. Open connection on the
handpiece cable assembly.
4. Problem in the PC board(s).
1. Install a Steri-Mate™ (360) on the handpiece cable assembly. Press the Purge icon.
2. Replace the Steri-Mate™ (360) with a known good handpiece. Press the Purge icon.
3. Replace the handpiece cable assembly. Press the Purge icon.
4. Return the Cavitron® 300 Series scaler to Dentsply Sirona Preventive SBU Product
Service for factory certified service.
Service Indicator 1 is displayed
in the upper left of the main
screen:
1. The Steri-Mate™ (360) is not
installed on the end of the
handpiece cable assembly.
2. Open coil or connection
on the Steri-Mate™ (360)
handpiece.
3. Open connection on the
handpiece cable assembly.
4. Problem in the PC board(s).
1. Install the Steri-Mate™ (360) on the handpiece cable and activate the Foot Control.
2. Replace the Steri-Mate™ (360) with a known good one. Activate the Foot Control.
3. Replace handpiece cable assembly.
4. Return Cavitron® 300 Series scaler to Dentsply Sirona Preventive SBU Product
Service for factory certified service.
Service Indicator 2 is
displayed in the upper left
corner of the main screen:
1. Unit is installed in a confined
area (such as a cabinet), or is
too close to a heat source to
insure proper air circulation
around unit.
2. Problem on the PC board(s).
1. Provide adequate air circulation around unit. Service light will turn off when the unit
returns to normal operating temperature.
2. Return Cavitron® 300 Series scaler to Dentsply Sirona Preventive Product Service
for factory certified service.
Tap-On Technology is not
working:
1. The Foot Control was not
tapped quickly.
2. Tap-On Technology is
disabled.
3. The handpiece is in the
handpiece holder.
4. Insert is not secured in the
handpiece.
1. If the Foot Control is not tapped quickly, the Tap-On Technology will not operate. It
will operate in the conventional manner.
2. Press and hold the Settings Icon for approximately two (2) seconds. On the
Settings screen, press the Tap-On icon. Ensure icon indicates activation.
3. A sensor in the handpiece holder prevents the Tap-On Technology from operating
when the handpiece is in the holder.
4. Fully seat the insert.
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis

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Symptom/Cause Corrective Measures
Ultrasonic power level cannot
be changed by sliding finger
along the touch screen:
1. If the screen is dimmed, it
may be locked.
1. Depress padlock icon at the lower left of the main screen to unlock.
Ultrasonic Preset Power
modes cannot be accessed:
1. Preset Power icon not
pressed properly.
1. Press center of Preset Power icon for positive activation.
Ultrasonic Preset Power
Modes cannot be changed:
1. Power preset icons were not
programmed properly.
1. Set desired power level by sliding the power level icon along the scale or tapping
the scale where desired.
2. Press and hold the selected memory icon.
3. Wait for the audible signal. The power level should be indicated in the memory
location icon.
Purge mode cannot be
activated:
1. Purge Icon not depressed
properly.
2. Foot Control is depressed.
3. Handpiece Lavage Control
set too low.
1. Be sure Purge Icon is depressed until activation. Screen will indicate the remaining
Purge time and return to Main screen when completed.
2. Foot Control must be released to activate Purge function.
3. Turn Lavage Control to maximum setting for better purge water flow. Inserts
should also be removed.
Rinse mode cannot be
activated:
1. Foot Control not depressed. 1. Foot Control must be depressed to begin the Rinse mode. The screen will indicate
when Rinse mode is in operation.
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis

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Symptom/Cause Corrective Measures
Sync cannot be activated:
1. Synchronization sequence
not performed correctly. Red
Sync button on Foot Control
was not pressed for at least 3
seconds.
2. Foot Control powered off.
1. Follow Synchronization steps carefully.
a. Press and hold Setting Icon.
b. Press Synchronization Icon.
c. Circular arrows will rotate in the lower left of the display.
d. Using a small object (ball point pen) press the red Sync button on the bottom of
the Foot Control for at least 3 seconds.
e. An audible signal will be heard indicating successfully synchronization of the Foot
Control and the scaler.
2. The Foot Control is packaged with the power OFF. The Foot Control must be
turned ON prior to use. (The Foot Control will not charge in the OFF state.)
a. The Power button must be pressed and held for 4 seconds to power ON the
Foot Control.
b. If the Foot Control power is OFF, pressing the Sync button or trying to Sync
with the Scaler will not turn the Foot Control ON.
Lock Icon cannot be activated:
1. Icon not depressed correctly. 1. Lock / Unlock Icon must be pressed and held to activate. Screen should dim when
it is locked.
Cannot adjust display
brightness:
1. Display brightness can only
be adjusted in the Settings
screen.
1. Slide Brightness Icon up and down the scale to adjust. The brightness level
percentage should be indicated on the screen.
When not using the scaler
for a while, the screen turned
dark:
1. Unit went into “Sleep Mode.” 1. Unit will enter “Sleep Mode” when it is not used for 1 hour. Press anywhere on the
display to resume operation.
Water Filter Icon did not
accurately indicate the
condition of the filter:
1. Water Filter Icon illuminates
after 120 hours of actual
scaling operation.
1. The Water Filter Icon’s purpose is to remind the dental practitioner to replace the
filter on a periodic basis.
1. G310 Cavitron® 300 Series Scaler Troubleshooting And Analysis