Chapter 4: Troubleshooting
Troubleshooting Tables
4-36 Service Manual
4.4.6.3 Hands Free Alarm Silence Does Not Work
4.4.6.4 Distorted Audio Speaker
4.4.6.5 Flashing Alarm Light; Warmer Will Not Initialize
Possible Causes Step Troubleshooting Procedure Comments
Too much ambient
sunlight
1.
Make sure that the unit is not placed in areas
with excessive sunlight, such as under a skylight.
Also, make sure that procedure light and
observation lights are not at the highest settings,
as the bright light may affect infrared signals to
the Alarm/Light PCA.
Alarm/Light PCA not
programmed
2.
Turn on procedure light. If procedure light does not
light, replace the Alarm/Light PCA.
3.
Or: In Service Mode, check the software versions.
Make sure that the alarm processor indicates
asoftware version.
Function has been
disabled or is not
enabled in software
4.
In setup, verify hands free silence is enabled. If it
cannot be enabled, check the Service Mode setting
to make sure HFAS is enabled and save settings.
Open connection 5.
Check ribbon cable from the Control PCA to the
Alarm/Light PCA. Make sure it is properly seated
and correctly connected. Replace as necessary.
Ribbon cable part #:
6600-1411-602
6.
Go into Service Mode diagnostics--> touch panel
buttons-->test function--> hands free alarm.
Perform the test, making sure that the display
screen reads pushed and released at the correct
time when a hand is waved in front of the alarm
panel.
Defective emitter/
receiver circuit
7. Replace the Alarm/Light PCA.
Defective control
PCA
8. Check/replace the Control PCA.
Possible Causes Step Troubleshooting Procedure Comments
Defective speaker 1. Replace the speaker.
Speaker part #:
6600-1563-700
Possible Causes Step Troubleshooting Procedure Comments
DC Supply 1.
Check voltage at Power PCA test pins 20-3 and test
pins 22-3. Verify at least 11.5V.
Defective Power
Supply
2.
If not, disconnect J20 from Power PCA. Verify +12V
at harness connector pins 5 to 1.
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