GE Giraffe Service Manual page 79

Symptom Possible Cause
A patient probe is plugged
into Jack 2 on the probe
Unit will not
panel.
switch to Baby
Control Mode.
Baby Control is disabled on
Service screen.
Defective scale.
Defective scale harness.
Defective Servo Oxygen
board.
Defective Servo Oxygen
cable.
Unit will not
Defective battery.
power up, alarm
sounds.
Defective power supply.
Defective power harness to
display board.
Defective display driver
board
Defective control board.
Baby Hot or Baby
Cold alarms MANUAL TEMP alarm is
activated while selected on the Setup
unit is in Manual screen
Mode.
Air Temp >38C or
Air Temp >40C
Alarm is not designed to
alarm activated
automatically reset after
even though
alarm condition is resolved.
compartment
temp is < alarm.
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.
Action
Disconnect probe from Jack 2 (unit will only allow Baby
Control operation with a single probe in Jack 1).
Select BOTH for Patient Control on service screen to
activate Baby Control.
Disconnect scale connector at probe panel. Power cycle
the unit. If error clears replace the scale.
Disconnect scale harness from J7 on the control board.
Power cycle the unit. If error clears replace the scale
harness.
Disconnect the RS485 harness from J8 on the Servo
Oxygen board. Power cycle the unit. If the error clears,
replace the Servo Oxygen Board.
Disconnect RS485 bus cable from J6 on the control board.
Power cycle the unit. If the error clears, replace the RS485
cable going to the Servo Oxygen board.
Remove the electrical enclosure cover and disconnect
the battery. Power down and power up again. If the unit
powers up, replace the 9V battery (66001024600).
Check power supply voltages. Refer to the Tips section
4.6.3.
Verify power supply voltages at J23 on display driver
board.
• +5V 1-2
• +12V 1-3
• +5STBY 1-4
Disconnect ribbon cable from J6 on control board. Power
up unit. Giraffe logo should appear on display. After about
70 seconds the audible alarm sounds. If the logo does not
appear replace the display driver board.
Replace control board.
Select OFF for MANUAL TEMP alarm on Setup screen.
Push the alarm silence button to clear the alarm.
6600-0356-000 103
Chapter 4: Troubleshooting
51