AT&T PC 6300 - 700-8250 Serial Port Tests

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DIAGNOSTICS
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700—8250 Serial Port Tests
The 700 series tests are the 8250 Serial Port Tests. The error
messages for this series of tests are listed below;
7x1 Data path check to the 8250 failed.
P 7x2 Transmit/receive failed using the 8250 Internal
Loopback Mode.
7x3 Transmit/receive failed using the loopback jumper (only
on System Test).
7x4 8250 Interrupt Circuit Check failed.
7x5 Control lines are not correct using external loopback
jumper.
Note: X = 0 or 1 for two possible ports.
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