Main Troubleshooting Flowchart - HP OmniBook 300 Service Manual

Main Troubleshooting Flowchart

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