HP nw9440, nx9420 manual Flowchart 2.5-No Power, Part

Troubleshooting

Flowchart 2.5—No Power, Part 4

Continued from

“Flowchart

2.4—No Power,

Part 3.”

Open

computer.

Y

Loose or damaged parts?

N

Close

computer and

retest.

Reseat loose

components and

boards and

replace damaged

items.

Replace the following items (if applicable). Check

Ncomputer operation after each replacement:

1.Internal DC-DC converter*

2.Internal AC adapter

	Power on?	3.		Processor board*
		4.		System board*
Y			*NOTE: Replace these items as a set to prevent
			shorting out among components.
	Done

Maintenance and Service Guide 2–15