Compaq Contura 400 Maintenance And Service Manual page 265

Keyboard
Error or Text
Fixture
Installed
---------------------------------------------------------------------------
303 - None
Keyboard
Controller
Error
---------------------------------------------------------------------------
304 - Keyboard None
or System Unit
Error
---------------------------------------------------------------------------
401 - Printer None
Error
---------------------------------------------------------------------------
402 - 1 Long,
Monochrome 2 Short
Adapter
Failure
---------------------------------------------------------------------------
501 - Display 1 Long,
Adapter 2 Short
Failure
---------------------------------------------------------------------------
601 - Diskette None
Controller
Error
---------------------------------------------------------------------------
602 - Diskette None
Boot
---------------------------------------------------------------------------
Message Beeps
---------------------------------------------------------------------------
605 - Diskette 2 Short
Drive Error
---------------------------------------------------------------------------
702 - None
Coprocessor
Detection
Error
---------------------------------------------------------------------------
702A - 2 Short
Coprocessor
Detection
Error
---------------------------------------------------------------------------
703 - CMOS 2 Short
Reports A
Coprocessor
That Has Not
System board
keyboard
controller
Keyboard
Printer
controller
Monochrome
display
controller
Video display
controller
Diskette
controller
circuitry
Diskette in drive
A not bootable
Probable Cause
Mismatch in drive
type
Coprocessor
Coprocessor
Coprocessor or
configuration
error
2. Replace system board.
Replace the system board.
1. Check external keyboard.
2. Replace system board.
Replace the system board, if
applicable.
Replace the monochrome
display controller.
Replace the display panel.
1. Make sure diskette drive
cable is seated.
2. Replace the diskette
drive cable.
3. Replace the diskette
drive.
4. Replace the system board.
1. Replace the diskette.
2. Replace the diskette
drive.
3. Replace the system board.
Recommended Action
Run Computer Setup.
1. Replace the processor
upgrade.
2. Replace the system board.
1. Replace the processor
upgrade.
2. Replace the system board.
1. Run the Configuration
utility.
2. Replace the processor
upgrade.