System Failure 5; System Failure 6; System Failure 7; System Failure 8 - GE Giraffe Service Manual

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Chapter 4: Troubleshooting

4.4.5 System Failure 5

System failure 5 indicates: The volt reference is out of the 1.171V - 1.259V range.
Cause(s)
System calibration required.
Defective control board.

4.4.6 System Failure 6

System failure 6 indicates: Defective overtemp DAC circuit on the control board.
Cause(s)
System calibration required.
Defective control board.

4.4.7 System Failure 7

System failure 7 indicates: 1.0 V Thermistor reference voltage is out of 0.951V - 1.049V range.
Cause(s)
System calibration required.
Defective control board.

4.4.8 System Failure 8

System failure 8 indicates: No Line Frequency. When troubleshooting this error code, have control board, 50 pin
ribbon cable, and relay board on hand.
Cause(s)
Defective control board.
Defective 50 pin ribbon cable
between the relay board and
control board.
Defective relay board.
40
Action(s)
Perform system calibration.
Replace the control board.
Action(s)
Perform system calibration.
Replace the control board.
Action(s)
Perform system calibration.
Replace the control board.
Action(s)
Measure the signal on the control board between J9 pin 43, and TP1-4
(Ground). It should be a 120 hertz signal. If the signal is OK, replace the
control board.
If no signal, check continuity on the 50 pin cable, pin 43. If defective,
replace the cable.
Replace the relay board.
6600-0356-000 103
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.

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