Diagnostics - GE PANDA Service Manual

Chapter 4: Troubleshooting
Service Mode

4.1.7 Diagnostics

Diagnostics provides the following functions:
• Temperature A/D Channels
• VGA Test
• Touch Panel Buttons / Switches
• Alarm Tests
• Odometer
• Logs
• Heat Engine Check
4.1.7.1 Temperature ADC Diagnostics
This screen displays reference voltages, readings from both patient probe thermistors, one fixed thermistor
input, and the ambient temperature of the Control Board.
Expected Values
ADC Channel
1 Vthref
2 Vo/t
3 Pat Probe Thermistor 1
4 Pat Probe Thermistor 2
5 Vref 37°C
6 Ambient Temp
7 Unused
8 Vref 1P235
4-6
Raw Value Corrected Value
2048 (+ / - 4) 1500 (+ / - 3) mV
NA NA
NA Pat Probe Thermistor 2 ±0.3°C
NA Pat Probe Thermistor 1 ±0.3°C
2232 (+ / - 23) 37.3 (+ / - 0.2)°C
NA NA
NA NA
1706 (+ / - 8) 1250 (+ / - 6) mV
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