Figure 4-5 First Service Screen: Diagnostics - GE Giraffe Service Manual

Item Description
Brings up scale calibration screen. Refer to "Chapter 3: Calibration and Maintenance" for
Cal Scale
information on how this screen is used.
A number of diagnostic readings appear on the right side of the service screens.
Item Description
HFS High fan speed. Should be 1500 + 100 (measured at power up only)
LFS Low fan speed. Should be 1000 + 100 (measured at power up only)
RH Relative Humidity. % humidity read in the patient chamber
SR Scale counts raw
SC Scale counts corrected (1 count = 1 gram)
Air display temperature. Temperature read by the first thermistor in the compartment air probe.
ADT
Should be + 0.3ºC of ACT temperature.
Temperature read by second thermistor in the compartment air probe. Should be + 0.3ºC of ADT
ACT
temperature.
P11 Reading from the first thermistor in patient jack 1. Should be + 0.5ºC of P12 temperature.
P12 Reading from the second thermistor in patient jack 1. Should be + 0.5ºC of P11 temperature.
P21 Reading from the first thermistor in patient jack 2. Should be + 0.5ºC of P22 temperature.
P22 Reading from the second thermistor in patient jack 2. Should be + 0.5ºC of P21 temperature.
Heat sink sensor resistance. Should be approximately 20000 ohms @ 25ºC. Refer to the Tips section
HSP
4.6.7 for resistance verses temperature values.
LV1 Line voltage in first mains circuit.
LF 60Hz or 50Hz
MC Motor current. Shows current drawn by the e-base motor
TV Thermistor voltage. Voltage of thermistor circuits located on the mother board.
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.

Figure 4-5 First Service Screen: Diagnostics

Chapter 4: Troubleshooting
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