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HP LaserJet Enterprise MFP M633 Fax Guide - Page 25

Improve fax image quality

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6 Improve fax image quality If the printer is having fax quality problems, you can find troubleshooting instructions on the HP web site. Go to www.hp.com/support/mfpfaxaccessory700. ENWW 19

Section	Page
Overview	7
Introduction	7
HP MFP Analog Fax Accessory 700 features	8
Parts included with the fax accessory	8
Install the fax accessory	9
Install the fax accessory	9
Connect the fax accessory to a phone line	10
Verify fax operation	10
Update firmware	11
Set up fax	13
Introduction	13
Required fax settings	13
Set up fax by using the printer control panel	13
Change fax configurations	15
Introduction	15
Fax dialing settings	15
General fax send settings	17
Fax receive settings	19
Send a fax	21
Send a fax	21
Additional fax tasks	24
Improve fax image quality	25
Solve fax problems	27
Checklist for solving fax problems	28
What type of phone line are you using?	28
Are you using a surge-protection device?	29
Are you using a phone company voice-messaging service or an answering machine?	29
Does your phone line have a call-waiting feature?	29
Check fax accessory status	29
General fax problems	31
The fax failed to send	31
An Out of Memory status message displays on the printer control panel	31
Print quality of a photo is poor or prints as a gray box	31
You selected the Stop button to cancel a fax, but the fax was still sent	32
No fax address book button displays	32
Not able to locate the Fax settings in HP Web Jetadmin	32
The header is appended to the top of the page when the overlay option is enabled	32
A mix of names and numbers is in the recipients box	32
A one-page fax prints as two pages	32
A document stops in the document feeder in the middle of faxing	32
The volume for sounds coming from the fax accessory is too high or too low	32
Specifications	32
Fax accessory product specifications	33
Replacement parts and accessories	34