Dentsply Sirona Cavitron 300 Series, Руководство по обслуживанию

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2. G310 Cavitron ® 300 Series Scaler
DISASSEMBLY AND SERVICE PROCEDURES
This section is meant for use by qualified Cavitron Service
Technicians.
CAUTION: THIS UNIT CONTAINS COMPONENTS WHICH
ARE SUBJECT TO ELECTROSTATIC DAMAGE (ESD). THE
WORKSTATION SURFACE AND REPAIR TECHNICIAN
MUST BE PROPERLY GROUNDED PRIOR TO REMOVAL
OF THE COVER
.
INDEX
A. Top Cover and Touch Screen Removal
B. Fuse Testing Procedure
C. Fuse Replacement
D. Power Switch Replacement
E. Power Entry Module Replacement
F. Power Supply Assembly Replacement
G. Drive PCB Stack: PSOC PC Board (Upper PCB)
H. Drive PCB Stack: Power PC Board (Lower PCB)
I. Water Regulator / Solenoid Replacement
J. USB Connector Assembly Replacement
K. Handpiece Receptacle Replacement
L. FPGA Board Replacement (Back of Touch Screen)
M. Display Sub-Assembly Replacement
A. Top Cover and Touch Screen Removal:
1. Power OFF the Cavitron
®
300 Series Scaler using
the back panel rocker switch.
2. Unplug the power cord from the power entry
module.
3. Disconnect the blue water hose by unplugging the
quick disconnect at the supply. Depress the tip
of the quick disconnect in a suitable container to
relieve the water pressure. Then press in on the
gray ring surrounding the blue water hose at the
scaler and pull out the water hose.
4. If the Auxiliary Foot Control cable is being used,
unplug it from the front of the unit.
5. Place the unit on a clean non-abrasive surface to
prevent damage to the cabinet.
6. Use a screwdriver and remove the two (2) #6 x
1/2" Hi-Lo Torx screws located at the lower corners
of the back panel of the unit.
7. Turn the unit over. Use a screwdriver and remove
the two (2) #6 x 1/2" Hi-Lo Torx screws located on
the bottom front edge of the unit. Place the unit
upright.
8. On the back of the cover assembly, unplug
the two-wire connector from J1 and the 5-wire
connector from J2 from the FPGA PC board.
9. Place the front panel on an ESD protected surface
and safeguard it against physical and cosmetic
damage.
B. Fuse Testing Procedure:
1. Follow the steps above in Section A for “Top Cover
Removal.”
2. Be sure power cord is disconnected from the back
of the unit.
3. Use a DVM in the Resistance
"
Ω
"
setting to
measure the continuity.
4. Connect the meter probes across each fuse
separately.
5. A blown fuse will measure maximum resistance or
no continuity.
C. Fuse Replacement:
1. Follow the steps above in Section A for “Top Cover
Removal.”
2. Ensure that the power cord has been unplugged
from the rear power entry module.
3. Use the Fuse Testing Procedure above to
determine if either of the two (2) fuses are open
(blown).
Unplug
2-wire
connector
from J1
FPGA
PC Board
behind
Touch
Screen
Unplug
5-wire
connector
from J2
Check continuity on each fuse