HP 400 manual Self-Tests

Solving Power Adapter Problems

Table 5-1. Solving Power Adapter Problems

Problem		Solution
Printer will not operate	1.	Verify that the correct power adapter has been used.
	2.	Verify that the power adapter connector is fully seated in the printer’s power
		socket.
	3.	The user may not be pressing the Power button long enough. Press the
		Power button until the light turns on.
	4.	Check the voltage out of the power adapter. Replace the power adapter if it
		is faulty.
	5.	The printer may be faulty. Return the printer for repair.

Troubleshooting the Printer

Self-Tests

Power On Self-Test

HP DeskJet 400 printer performs a power-on self-test when the printer is turned on to test printer operation. There is no printout associated with the power-on self-test.

There are two possible outcomes to the power-on self-test:

•If the printer passes the power-on self-test, the printer will power up with its current default settings and the Power light will be lit.

•If the printer fails the power-on self-test, the printer lights will blink simultaneously. For more information on printer light error patterns, see “Printer Light Indications” in this chapter.

5-4 Problem Resolution