Philips Avalon CTS M2720A, Service Manual, Page: 82 / 110

7 Troubleshooting Troubleshooting the Top Cover
76
– Avalon FMxx monitors:
DECG LEADS OFF
INOP should disappear.
If the test results are not as outlined above, repeat the test with another ECG transducer. If this does not
solve the problem consider the following:
• Check that the base station is properly connected to the fetal monitor.
• There is likely to be an RF-related problem. Check for frequent mode annotations on the fetal
monitor’s recorder to confirm this. Refer to the information on RF troubleshooting in this chapter, and
to the chapter “Troubleshooting” in the
Instructions for Use .
• According to which monitor is being used, if
nop
(Series 50) or
DECG LEADS OFF
INOP is still
displayed, the DECG adapter cable may be defective. Replace the adapter cable.
If the problem persists, replace the transducer.
The transducers are sealed and are NOT repairable.
In MECG Mode
1 Ensure that the ECG transducer is registered to the base station, is showing a bed label and has a good
RF link to the base station.
2 Attach the MECG adapter cable to the red color-coded socket on the transducer.
3 According to fetal monitor specification, MECG values are displayed on the monitor display and/or
annotated on the recorder strip.
4 EITHER
Attach electrodes to the MECG adapter cable, and apply the electrodes to the skin (for example on the
wrists).
OR
Attach the MECG adapter cable to a patient simulator.
Note—
We do not recommend the use of a specific patient simulator. The use of a patient simulator does not
allow checking the specification of the ECG-Functionality; it allows only a check of general function.
Result: You should see MECG values displayed on the maternal LCD display or annotated on the
recorder trace.
If the test results are not as outlined above, repeat the test with another ECG transducer. If this does not
solve the problem:
• The MECG adapter cable may be defective. Replace the adapter cable, and repeat the test.
• Check that the base station is properly connected to the fetal monitor.
• There is likely to be an RF-related problem. Check for frequent mode annotations on the fetal
monitor’s recorder to confirm this. Refer to the information on RF troubleshooting in this chapter, and
to the chapter “Troubleshooting” in the
Instructions for Use .
If the problem persists, replace the transducer.
The transducers are sealed and are NOT repairable.
Troubleshooting the Top Cover
Note that malfunction of the top cover can be due to MIF board failures. In this case, repair is effected by
exchanging the base station.
To Purchase, Visit Avobus.com or call 1-800-674-3655