Intelect/Genisys Ultrasound Diagnostics - Chattanooga Intelect Genisys 2776 Intelect Genisys 2782 Intelect Genisys 2792 Service Manual

5- TROUBLESHOOTING

5.2 Intelect/Genisys Ultrasound Diagnostics

A. General
1. The following information is intended to aid in
troubleshooting the major components of the
Ultrasound Therapy Systems to "Board Level"
only. These tests are OEM standard testing
procedures and methods used at the factory
before shipment of any Ultrasound Therapy
System.
2. Due to the complex nature of the
technology utilized by Chattanooga Group,
the recommended troubleshooting
techniques are to determine "Bad Board"
and board replacement only. No board
component level troubleshooting is
recommended nor will information or parts
be supplied by Chattanooga Group. Any
board component level troubleshooting
performed will be at sole risk and liability of
the Service Technician performing such
troubleshooting techniques.
B. Special Tools, Fixtures & Materials Required
1. Certain tests require the use of special Tools
and/or Fixtures. These will be listed at the
particular test where they are required. Testing
with any other special tool or fixture other than
those stated could give erroneous readings or
test results. Always perform the tests exactly as
stated to ensure accurate results.
2. Any special tools or fixtures required can be
obtained through Chattanooga Group, Service
Department.
3. Scope and other standard test equipment
settings will be listed for each test performed to
aid in performing the test to OEM standards and
ensure proper readings.
4. The troubleshooting and repair of the Ultrasound
Therapy Systems should be performed only by
authorized technicians trained and certified by
Chattanooga Group.
C. Equipment Required
1. Oscilloscope and Probes
2. Electrotherapy Service Technician Interface
(ESTI) Diagnostics Kit.
3. Digital Multimeter
4. Milliohm Meter
5. Dielectric Withstand (Hi-Pot) and ground
resistance tester.
NOTE:
Adjust Dielectric Withstand tester to indicate fault with
120k Ohm Load across the output when at specified test
voltage.
Intelect ® /Genisys
6. Ohmic Instruments UPM DT 10 or UPM DT 100
Ultrasound Power Meter.
NOTE:
The Ohmic Industries UPM DT 10 or UPM DT 100
Ultrasound Power Meters are the only power meters on
the market that will meet the strict specifications set forth
for Chattanooga Group Ultrasound Products. It is
absolutely necessary for the Field Technician to have
available and use the Ohmic Industries UPM DT 10 or
UPM DT 100 Power Meter when performing any service or
calibration of any Chattanooga Group Ultrasound
products.
7. Degassed Water (< 5 ppm) for Ultrasound Power
Meter.
Recipe(s) for Degassed Water
1) Boil Distilled Water for 30 minutes. Place
water in a nonporous container and
immediately cover with cellophane. Allow to
cool to room temperature of approximately
21°C (70°F). May be refrigerated to aid
cooling time.
2) Bring Distilled Water to a boil. Place the
container under vacuum for 5 to 10 minutes.
8. Dissolved Oxygen Test Kit. Used to test oxygen
level of degassed water.
NOTE:
Two liter softdrink bottles are ideal storage and transport
containers for degassed water as they are designed to
keep oxygen out. Do not allow aeration of degassed water
during transport or filling of the power meter.
Do not use Tap Water or Distilled water in the Ultrasound
Power Meter. Use only Degassed Water in order to obtain
correct test results. The chart below illustrates the oxygen
content of Degassed, Tap and Distilled Water.
WATER TYPE
Degassed
(per recipe 1 or 2)
Tap Water
Distilled Water
9. Ultrasound Applicators (Intelect/Genisys
Accessories).
10
® Ultrasound Therapy Systems
ppm of Oxygen
Less than 5 ppm
Up to 35 ppm
Up to 20 ppm