![background image](http://html1.mh-extra.com/html/compaq/deskpro-286-desktop-pc/deskpro-286-desktop-pc_maintenance-and-service-manual_2645687029.webp)
1101 - 02
Serial Port Test, Line
1.
Check diskette/tape controller
input or UART fault
board for proper shunt jumper
settings (see Chapter 8). *
1101 - 03
Serial Port Test, Address
2.
Replace the diskette/tape
line fault
controller board.
3.
Replace the system board.
1101 - 04
Serial Port Test, Data line
fault
* 286 based COMPAQ Personal
Computers only
1101 - 05
Serial Port Test, UART
control signal
1101 - 06
Serial Port Test, ART THRE
bit failure
1101 - 07
Serial Port Test, UART DATA
READY bit failure
1101 - 08
Serial Port Test, UART
TX/RX buffer failure
1101 - 09
Serial Port Test, INTERRUPT
circuit failure
1101 - 10
Serial Port Test, COM 1 set
to interrupt 3
------------------------------------------------------------------------------
Error
Error
Required
Code
Description
Action
------------------------------------------------------------------------------
Serial
11yy - xx
------------------------------------------------------------------------------
1101 - 11
Serial Port Test, COM 2
The following steps apply to all
set to interrupt 4
11yy - xx related error codes:
1101 - 12
Serial Port Test,
1.
Check diskette/tape controller
DRIVER/RECEIVER control
board for proper shunt jumper
signal failure
settings (see Chapter 8). *
2.
Replace the diskette/tape
1101 - 13
Serial Port Test, UART
controller board.
control signal interrupt
3.
Replace the system board.
failure
* 286 based COMPAQ Personal
1101 - 14
Serial Port Test,
Computers only
DRIVER/RECEIVER data failure
1109 - 01
Serial Clock Test, register
initialization failure
1109 - 02
Serial Clock Test, register
rollover failure
1109 - 03
Serial Clock Test, clock
reset failure
1109 - 04
Serial Clock Test, input
line or clock failure
1109 - 05
Serial Clock Test, address