User`s guide
M3000A/M3046A/M3015A/M3016A Service Guide
Troubleshooting the Instrument 5-11
127( Do not try to remove the video flex layer because, if snapped on correctly, remov-
ing it can easily damage the SMT solder joints.
• Check that the cables of the backlight tubes are seated correctly into the backlight inverter.
• Check the backlight tubes are working correctly (broken, damaged, or worn).
• If the display still remains dark either the Display Assembly or the System Board is defec-
tive. It is recommended to replace the Display Assembly first.
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If the Monitor boots until the display is switched on but the Alarm LED and the Suspend
LED have not switched as described previously (red, red/yellow then off), suspect the
following:
• Check that the Monitor Bezel cable is seated correctly.
• Replace the Monitor Bezel.
• Replace the System Board.
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If no marker pulse is displayed on the Monitor (assuming the defibrillator and defibrillator
cable are in working order), check the following:
• Disconnect the Server and Defib cable.
• Switch the Monitor off then on again. Observe the red LED in the ECG OUT section. (The
Instrument Self-Test is performed).
• If the red LED does not switch on for about 1 second at power on, replace the System
Board.
• If the red LED switches on and remains on for more than 20 seconds, replace the System
Board.
• Use a NQRZQJRRG link bar and connect a Defib, Defib cable and the Measurement Server
again. Check marker pulse again.
• Use a NQRZQJRRG Measurement Server. Check marker pulse again.
• If both of the above fail, replace the System Board.
If there is no ECG OUT signal to the Defib, repeat the above checks.