Flowchart 2.5—No Power, Part - HP Compaq NX4820 Maintenance And Service Manual

Flowchart 2.5—No Power, Part 4
Continued from
"Flowchart
2.4—No Power,
Part 3."
Open
computer.
Loose or
damaged
parts?
N
Close
computer and
retest.
Power on?
Y
Done
Maintenance and Service Guide
Y
Reseat loose
components and
boards and
replace damaged
items.
N
Replace the following items (if applicable). Check
computer operation after each replacement:
1. Internal DC-DC converter*
2. Internal AC adapter
3. Processor board*
4. System board*
*NOTE: Replace these items as a set to prevent
shorting out among components.
Troubleshooting
2–13