Chapter 5: Troubleshooting
Status
5-22 Service Manual
5.4.4.4 Sensor Housing Temperature Sensor Temperature to Resistance Curve
5.5 Status
Access the Status screen from the main service menu. See “Accessing Service Mode” on page 4-1.
The Status screen displays status of all self tests the software runs continuously. These include: incubator
heater on (INCHTRON), warmer heater on (WRMHTRON), incubator/warmer heater off (I/WHTROFF),
humidifier heater on (RHHTR), remote monitoring data stream (RS-232LOOP), incubator fan on (FANON), and
incubator fan off (FANOFF). The current software revision of the options installed on this specific device
(Humidifier, Scale, SPO2, etc.) is shown.
If the RS-232 is not installed RS-232LOOP will display N/A. To test the circuit if the RS-232 is working, connect
the RS-232 to a working RS-232 compatible device or short pins 2 and 3 on the 9 pin connector.
Temperature Resistance
15 °C 15.720 kOhm
25 °C 10.000 kOhm
30 °C 8.056 kOhm
35 °C 6.530 kOhm
40 °C 5.326 kOhm
45 °C 4.369 kOhm
50 °C 3.604 kOhm
60 °C 2.491 kOhm
FIGURE 5-2. Status Screen
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