Accutorr Plus Service Manual 0070-10-0691 3 - 7
Repair Information Troubleshooting (Problem Isolation)
3.5.2 Isolating the Problem within the Main Unit
Problems within the main NIBP and/or SpO
2
unit are categorized broadly into power
supply problems and NIBP and/or SpO
2
detection and display. For a monitor that will not
even turn on, proceed to Power Supply and Battery Tests, otherwise skip to Diagnostics
Test and beyond.
1. Power Supply and Battery test: The main power supply output voltages should be
verified under normal instrument loads. Below are the tolerances for the voltages
shown:
5V = 4.9 - 5.1
12.5V = 12 - 13
±15V = 14.5 - 15.5
2. Perform Diagnostics Test 01 through 12. Repair or replace circuits or components that
fail the Diagnostic Test.
3. Trend circuits test: Obtain a minimum of five NIBP measurements and simultaneous
SpO
2
and Temperature readings if the Accutorr has those options. Confirm Trend
storage function as explained in the operating instructions.
3.5.3 Isolating the Problems with Optional Accessory Modules
1. Predictive Temperature Module Test: Obtain one or more temperature readings from
the optional temperature modules. They will be displayed in the temperature display
window. If the readings are not displayed, replace the temperature probe first, then the
complete module.
2. Recorder Module Test: Obtain a print out of stored data, or perform diagnostics test
(#4) to verify recorder integrity. Substitute recorder with a known good device to
confirm diagnosis.
3. Infrared (AccuTemp IR) temperature module test: The following paragraphs will
assist you to separate those clinical issues that can result in inaccurate or inconsistent
readings, as well as instrument malfunctions.
Since there are no user serviceable components (except 9V battery) inside the
AccuTemp IR, all service requests should be directed to the factory.
3.5.4 Clinical Issues with AccuTemp IR Ear Thermometer Applications
3.5.4.1 Multiple Temperature Measurements
The AccuTemp IR employs an easy and quick method to taking temperature
measurements. Because of this, it is tempting to take immediate repetitive measurements.
However, taking immediate repetitive measurements in the same ear may result in a
decrease in temperature. This is because the probe of an ear thermometer is cooler than the
ear canal and will draw the heat from the ear canal, cooling the canal slightly. Waiting a
few minutes before taking another temperature in the same ear will give the ear canal time
to recover, and the readings should be consistent with the initial measurement.
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