3-14 MAC™ 800 2031504-159D
Troubleshooting
4. Perform the COM Port Loop Back test on COM 1.
a. With the focus on COM 1, press the Enter key.
The results of the COM Loop Back Test are displayed.
b. Note the results of the test.
If either test failed, replace the mainboard assembly as described
in “Replacing the Mainboard Assembly” on page 4-16.
5. When the test is complete, press F6 to Cancel and close the results
window.
LAN Test
The LAN Test can be used to test network connectivity.
1. Connect the MAC 800 device to an active LAN.
Ensure that the LAN is an active network. If you connect to an
inactive network tap, the test result may be a false negative.
2. Open the Diagnostic Tests window as described in “Accessing the
System Diagnostics Function” on page 3-6.
3. Select the LAN Test button.
The following window opens.
4. Press the Enter key to select the Test Network Connectivity button.
The Checking connectivity. Please wait. message is displayed. Then,
the results of test are displayed.
If the System Connected to Network message is displayed in the
window, the test passes.
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