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HP OfficeJet Pro 8120 User Guide - Page 99

Fix print quality issues, Improve print quality using the control panel

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1. Make sure the power cord is firmly connected to the printer. Table 9-2 Printer ports Port Description 1 Power connection to the printer 2 Connection to a power outlet 2. Look at the Power button located on the printer. If it is not lit, the printer is turned off. Press the Power button to turn on the printer. NOTE: If the printer is not receiving electrical power, connect it to another power outlet. 3. With the printer turned on, disconnect the power cord from the back of the printer. 4. Unplug the power cord from the wall outlet. 5. Wait at least 15 seconds. 6. Plug the power cord back into the wall outlet. 7. Reconnect the power cord to the back of the printer. 8. If the printer does not turn on by itself, press the Power button to turn on printer. 9. Try using the printer again. Fix print quality issues Learn how to troubleshoot print quality issues. NOTE: To avoid print quality problems, always turn the printer off using the Power button, and wait until the Power button light goes out before you pull the plug or turn off a power strip. This allows the printer to move the cartridges to a capped position, where they are protected from drying out. Improve print quality using the control panel Complete the following steps to improve print quality. Fix print quality issues 91

Section	Page
1. Get started	9
Printer views	9
Front view	9
Print supplies area	10
Rear view	11
Control panel features	11
Tilt the control panel	11
Control panel display	12
Function buttons	12
Change printer settings	13
Use HP software	13
Turn printer off	14
2. Connect your printer	15
Connect to a Wi-Fi network	15
Check Wi-Fi status	15
Turn on Wi-Fi	15
Connect to a Wi-Fi network using the HP software	16
Connect to a Wi-Fi network using the control panel	16
Connect to an Ethernet network	16
Connect using a USB cable	17
Change the connection type	17
USB to Wi-Fi	17
Wi-Fi to USB	17
3. Load media	18
Load paper	18
Load legal paper	20
Load envelopes	23
Load cards and photo paper	26
Load an original on the scanner glass	28
Load an original in the document feeder	29
Change the default paper settings	30
Paper basics	30
Tips for selecting and using paper	31
4. Configure your printer	32
Configure using the control panel	32
Configure using the embedded web server (EWS)	32
Open the embedded web server (EWS)	32
Find printer IP address	33
View or change network settings	33
Manually change IPv4 and IPv6 TCP/IP parameters	33
Assign or change the system password	33
Change energy-conservation settings	34
Update printer	34
Update printer using the control panel	34
Update printer using the embedded web server (EWS)	34
5. Print	35
Print from a Windows computer	35
Print from a Mac computer	35
Print from mobile devices	35
Print using Wi-Fi Direct	36
Tips for successful printing	36
Ink tips	36
Paper loading tips	37
6. Copy, Scan, and Mobile Fax	38
Copy from printer	38
Copy or scan from a mobile device	38
Scan and share files from the printer	38
Scan to a USB device from printer	39
Scan using Web Scan	39
Enable Web Scan	39
Scan using Web Scan	40
Tips for copy and scan success	40
Mobile Fax	40
7. Fax	42
Send a fax	42
Send a standard fax	42
Send a standard fax from the computer (Windows)	43
Send a fax from a phone	43
Send a scheduled fax using the control panel	44
Send a fax using the printer memory	44
Send a fax to multiple recipients using group address book	45
Receive a fax	45
Receive a fax manually	45
Reprint faxes in memory using the control panel	46
Block unwanted fax numbers	46
Set up address book contacts	47
Create an address book contact	47
Change address book contacts	48
Create and edit a group address book contact	48
Delete address book contacts	49
Delete group address book contacts	49
Change fax settings	49
Configure the fax dialing settings	49
Enable scan and fax method	50
Set the fax number confirmation	50
Set the error correction mode (ECM) settings	51
Set the overlay fax header	51
Set the billing code	51
Set the fax notifications (send or receive) settings	52
Configure the fax printing settings	52
Set the answer mode (auto answer)	53
Set the number of rings	53
Set the fax ring volume	53
Set the answer ring pattern for distinctive ring	54
Set the 2-sided fax printing	54
Set the stamp received faxes settings	55
Set the Fit to Page settings	55
Add a number to the Blocked Fax Numbers list	55
Set the Fax Speed (send or receive) settings	55
Set the dial type	56
Set fax forward	56
Configure fax archiving	57
Fax and digital phone services	58
Fax on Voice over Internet Protocol	58
Fax reports	59
Print the fax reports or logs	59
Billing Codes Report	59
Caller ID Report	60
Blocked Fax Report	60
Fax Trace Report	60
Fax Activity Log	60
Fax Call Report	60
Additional fax setup	61
Select the correct fax setup for your home or office	61
Case A: Separate fax line (no voice calls received)	62
Case B: Set up the printer with DSL	63
Case C: Set up the printer with a PBX phone system or an ISDN line	64
Case D: Fax with a distinctive ring service on the same line	65
Case E: Shared voice/fax line	66
Case F: Shared voice/fax line with voice mail	67
Case G: Fax line shared with computer modem (no voice calls received)	68
Case H: Shared voice/fax line with computer modem	71
Case I: Shared voice/fax line with answering machine	75
Case J: Shared voice/fax line with computer modem and answering machine	76
Case K: Shared voice/fax line with computer dial-up modem and voice mail	80
Run the fax test	82
8. Manage cartridges	83
Dynamic Security Enabled Printers	83
Tips for handling cartridges and printhead	83
Check estimated ink levels	84
Order cartridges	84
Replace cartridges	84
Store supply user data	87
Cartridge warranty information	87
9. Solve a problem	89
Jams and paper-feed issues	89
Possible jam locations	89
Remove jammed paper	90
Reset the printer	96
Learn how to avoid paper jams	96
Solve paper-feed problems	97
Printer is unable to print	98
Printing issues	98
Fix problems with page not printing (unable to print)	98
Fix print quality issues	99
Copy and scan issues	100
Fax issues	100
What to do if the fax test failed	100
Troubleshoot fax problems	103
Fax reports	106
Network and connection issues	107
Fix Wi-Fi connection	107
Fix Wi-Fi Direct connection	108
Fix Ethernet connection	108
Restore original network settings	109
Printer hardware issues	109
The printer shuts down unexpectedly	109
Printhead alignment fails	109
Resolve printer failure	109
Understand printer reports	110
Print a printer report	110
Printer maintenance	110
Clean the scanner glass	110
Clean the exterior	112
Clean the document feeder	112
Maintain the printhead and cartridges	113
Restore settings	114
HP support	115
Contact HP	115
Register printer	116
Additional warranty options	116
10. HP EcoSolutions (HP and the Environment)	117
Power management	117
Quiet Mode	117
Optimize printing supplies	118
A. Technical information	119
Specifications	119
Regulatory notices	121
Regulatory Model Number	121
FCC statement	121
Notice to users in Korea	122
VCCI (Class B) compliance statement for users in Japan	122
Power cord instructions	122
Notice to users in Japan about the power cord	122
Noise emission statement for Germany	122
European Union and United Kingdom Regulatory Notice	123
Products with wireless functionality	123
Visual display workplaces statement for Germany	124
Notice to users of the U.S. telephone network: FCC requirements	124
Notice to users of the Canadian telephone network	125
Notice to users of the German telephone network	126
Australia wired fax statement	126
Regulatory information for wireless products	126
Dynamic Security Enabled Printers	128
Accessibility	128
Environmental product stewardship program	129
HP tips for reducing environmental impact	129
Eco-Tips	129
Paper	129
Plastics	129
European Union Commission Regulation 1275/2008	129
Safety data sheets	130
Chemical substances	130
EPEAT	130
SEPA Ecolabel User Information (China)	130
Recycling program	130
HP inkjet supplies recycling program	130
Battery disposal in Taiwan	131
California Perchlorate Material Notice	131
European Union Battery Directive	131
Battery notice for Brazil	131
Power consumption	131
China Energy Label for Printer, Fax and Copier	131
Disposal of waste equipment by users	132
Waste disposal for Brazil	133
The Table of Hazardous Substances/Elements and their Content (China)	134
Regulation on the Control of Waste Electrical and Electronic Equipment (Turkey)	134
Restriction of hazardous substance (India)	134