GE Giraffe Service Manual

Symptom Possible Cause Action
Unit equipped
with servo-
humidity but RH
setpoint only
shows 1-10.
Unit was powered on and
the compartment probe
was not plugged in at the
probe panel (only on old
style units with connector)
Cycle power after compartment probe is plugged in.
Defective humidity sensor Replace the humidity sensor.
Defective control board. If problem persists, replace control board.
ADD WATER
message stays on
even after water
has been added.
Reservoir switch button is
jammed (only on units with
old style button).
Remove reservoir, but take care because surface may be
hot! Check that the white reservoir switch button moves
freely. If it is stuck in the closed position it should be
replaced with the new style. (6600-1298-500)
Defective reservoir switch.
Check resistance of reservoir switch at relay board harness
J32, 2-3. Switch should be closed when reservoir is closed
and open when reservoir is open.
Defective 50 pin ribbon
cable between the relay
and control board.
Check for continuity on pin 6 (RHBOTTLE). If defective,
replace cable.
Defective relay board. Replace relay board.
Defective control board. Replace control board.
Elevating base
will not go up or
down.
Pedal switches are disabled
on nurse setup screen or
service screen.
Check Setup screen (wrench symbol) or service screen to
see if pedal switches are disabled.
Defective toroidal
transformer
Check the toroidal transformer. Refer to the Tips section
4.6.10. Replace transformer if defective.
No mains input to the
toroidal transformer.
Replace relay board.
Output voltage from the
toroidal transformer is OK.
Defective fuse on relay
board.
Check fuses F5, F6 on the relay board.
Defective 50 pin ribbon
cable between the relay
and control board.
Check for continuity on pins 23, 24, 26, 27, 34 (motor
control and safety relay 2 control signals). If defective,
replace the cable.
Output voltage from the
toroidal transformer is OK.
Fuses on relay board are
OK. Defective elevating
base motor.
Check the voltage to the elevating column motor. Refer to
the Tips section 4.6.8. If OK, replace the elevating column
assembly.
Defective relay board. Replace relay board.
50 6600-0356-000 103 © 2001 by Datex-Ohmeda, Inc.. All rights reserved.
Chapter 4: Troubleshooting

GE Giraffe Specifications

General

Manufacturer	GE Healthcare
Type	Incubator
Humidity Range	30% to 95% RH
Power Supply	50/60 Hz
Model	Giraffe
Features	integrated scale
Control Modes	Air and Skin