Compaq 486 Maintenance And Service Manual page 33

1101 - 14 Serial Port Test;
DRIVER/RECEIVER
data failure
1101 - 15 Serial port test modem
detection
1101 - 16 Serial port test, modem
ROM checksum
1101 - 17 Serial port test, tone
detection
1101 - 18 Serial port test, COM3
set to invalid interrupt
1101 - 19 Serial port test, COM4
set to invalid interrupt
1109 - 01 Clock register initialization
failure
1109 - 02 Clock register rollover
failure
-----------------------------------------------------------------------------
Error
Code Description
-----------------------------------------------------------------------------
1109 - 03 Clock reset failure
1109 - 04 Input line or clock failure
1109 - 05 Address line fault
1109 - 06 Data line fault
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Table 3-9. Modem Test Error Codes
=============================================================================
Error
Code Description
-----------------------------------------------------------------------------
1201 - xx Modem Internal
Loopback Test
1201 - 01 UART DLAB bit failure
1201 - 02 Line input or UART
failure
1201 - 03 Address line fault
1201 - 04 Data line fault
1201 - 05 UART control signal failure
1201 - 06 UART THRE bit failure
1201 - 07 UART DATA READY bit
failure
Recommended
Action
Replace the I/O board and
retest for error codes
1101 - xx through
1109 - xx.
Recommended
Action
The following steps apply
to error codes 1201 - xx
through 1210 - xx:
1. Refer to modem
documentation for
Configuration utility
procedures.
2. Check the modem line.
3. Replace the modem
and retest.