GE MAC 5500, Service Manual

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4-14 MAC

5500 resting ECG analysis system Revision E

2020299-020
Troubleshooting: Diagnostic Tests

Battery temperature
 Battery charge status

Percent of charge remaining
Battery Charge Test
This test completely discharges the battery, if necessary, then monitors a charge
cycle.
NOTE
This test can take up to 6 hours to run. The “Battery Discharge Test” is a
better indicator of the condition of the battery.
1. To perform the Battery Charge test, unplug the unit from AC (mains) power.
2. Select Battery Charge Test . The Battery charge test window will appear and the
unit will begin to discharge the battery.
3. Once the unit has fully discharged the battery, plug the unit back into AC
(mains) power. The battery will begin to charge.
4. When the battery charge test is complete, go to Print the Charge Test Results .
Monitored information, written to internal memory, includes:

Charge rate (in mAH)
 Battery temperature

Battery charge status
 Percent of charge
Print Charge/Discharge Test Results
Prints the results of the last discharge or charge test to the writer.
Communication Tests
COM Port Loopback Test
The Communications Port Loopback Test sends various ASCII characters out the
COM port’s transmit lines and expects the same character to return in it’s receive
lines. Upon completion of the test, the word
Passed or Failed appears, depending on
the results.
For each of the options listed (COM1, COM2, COM3, and COM4) perform the
following steps,
1. Select an option and press the Enter key.
2. Follow the instructions on screen and install loopback jumpers in the selected
serial port.
3. Remove the loopback jumpers when the test is complete.