Computer Troubleshooting - Digital Equipment DECpc LPv 425sx Service Maintenance Manual

Digital DECpc LPv/LPv+

Computer Troubleshooting

Problem Possible Cause
No response Main logic board failure.
when the
computer is Main logic board jumpers
incorrectly set.
turned on
Brightness and contrast controls
Power is on, but
there is no are not correctly set.
screen display
Monitor cable is incorrectly
installed.
Video adapter not seated in the
expansion slot correctly.
Operating system software is not
Computer does
installed on the IDE hard disk
not boot from
drive.
an IDE hard
disk drive
IDE hard disk drive is not
correctly formatted or the
requested partition does not
exist.
There is no software on the
requested partition.
IDE hard disk drive jumpers
incorrectly set.
IDE drive type incorrect.
Loose cables.
Onboard IDE interface disabled.
"Boot from Hard Disk C" is
disabled via BIOS Setup utility.
MCS Logistics Engineering - Nijmegen
Action
Replace main logic board.
Set all appropriate jumpers.
Adjust the brightness and contrast controls.
Check all monitor connections.
Reseat the video adapter.
Install the appropriate operating system.
Format the IDE hard disk drive or partition the
IDE hard disk drive using the supplied operating
system software.
Install software on the requested partition.
Refer to the supplied IDE hard disk drive kit
installation instructions.
Run the BIOS Setup utility to identify the correct
drive type.See drive type label on drive or consult
drive documentation.
Secure all cable connections.
Run the BIOS Setup utility and set the IDE Hard
Disk Drives option to "Enabled".
Enable the "Boot from Hard Disk C" via BIOS
Setup utility.
Troubleshooting
55