HP OmniBook 425

13
Main Troubleshooting Flowchart
START
Eliminate all
obvious physical
problems?
Isolate damage.
Refer to repair
process
No
Get user
information:
Name
Telephone number
Unit serial number
Repair history
OB unit's power
light comes on?
See Power
Source
flowchart
Single beep
during boot-up?
See Boot-
up
flowchart
See DOS or
Windows?
Memory OK? (No
memory errors)
Hard disk
operates OK?
See Hard
Disk
flowchart
See
something in
display?
See Display
flowchart
See
Memory
flowchart
See Hard
Disk
flowchart
Unit has at least 1-
1/2 hours battery
life?
See Power
Management
flowchart
Pop-out mouse
works correctly?
See Mouse
flowchart
External floppy
drive operates
correctly?
See Floppy
Drive
flowchart
A
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No