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Philips HEARTSTART XLT Service Manual page 40

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Diagnostic Tests
2-20
To check the display:
1. Select Display Test and press
2. The display should turn completely dark, then completely light, then a
black vertical bar should scroll across the screen from left to right.
3. The display should then show Ambient Light Reading: with a number.
Under bright office lighting the reading would typically be about 10 or 15.
Cover the ambient light sensor tightly with your finger; the reading
should decrease (to near 0).
4. The display will also show softkey labels for
. Press each key and verify that the backlight on the dis-
BACKLIGHT OFF
play cycles on and off.
5. The display will also show a
and verify that the indicators in the Manual keypad each light in turn.
To check the audio output:
1. Select Audio Test and press
2. The screen will display Audio Test menu. Press the
to move up or down the list to select the desired test. Then press
to begin that test.
Check the Shutdown Warning and the Voice Prompt; the other responses
are for reference. The results should be as described below.
Press
to end the test and return to the main audio test menu.
CANCEL
Message Alert - a repeating series of 3 short tones, followed by a
pause.
Heart Rate Alarm - 1 sustained tone of moderately high pitch.
Charge Done Tone - 1 sustained tone of lower pitch than the Heart Rate
Alarm
Auto Disarm Warning - a repeating series of 1 short tone and a pause
Shutdown Warning - a repeating series of tones of alternating high/low
pitch
Voice Prompt - the prompt is repeated 3 times, each time with increas-
ing volume. Voice should be clear and understandable.
.
ENTER
BACKLIGHT ON
softkey label. Press this softkey
TEST LEDs
.
ENTER
Performance Verification and Safety Tests
and
and
softkeys
ENTER

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