Problem

Possible cause

Solution

 

 

 

Windows PC only

Static electricity has built up

Try the following:

When I connect a

in the cable between your

1

Disconnect the USB cable from

USB cable between

computer and printer.

 

your printer.

the printer and my

OR

2

Disconnect the power cord

computer, an

You may have a defective

 

from the printer.

UNKNOWN

USB cable.

3

Wait approximately 10

DEVICE message

OR

 

seconds.

appears.

 

Your USB cable may not be

4

Plug the power cord back into

 

 

connected properly.

 

the printer.

 

OR

5

Plug the USB cable back into

 

The software could not

 

the USB port on the back of the

 

identify the printer; the

 

printer.

 

printer-USB connection

6

If UNKNOWN DEVICE

 

may be defective.

 

continues to appear in the

 

 

 

New Hardware Wizard

 

 

 

dialog box, check

 

 

 

www.hp.com for updates or

 

 

 

contact HP Support and

 

 

 

Services. See the Software

 

 

 

Setup & Product Support

 

 

 

booklet that came with your

 

 

 

printer for contact information.

 

 

 

 

printer problems

Problem

Possible cause

Solution

 

 

 

Printing is very slow.

Your computer may have

Check the amount of free RAM

(continued on next

less than the

(memory) and the processor speed

page)

recommended system

of your computer. See the

 

requirements.

specifications section of the HP

 

 

Photosmart Printer Help for system

 

 

requirements.

 

 

 

 

Too many software

Close all unnecessary software

 

programs may be

programs.

 

running at the same time.

 

 

 

 

24

basics guide

Page 28
Image 28
HP 7150 manual Printer problems, Unknown

7150 specifications

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