HP LaserJet Pro MFP M28-M31 User Guide
HP LaserJet Pro MFP M28-M31 Manual
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- HP LaserJet Pro MFP M28-M31 | User Guide - Page 1
LaserJet Pro MFP M28-M31 User Guide www.hp.com/support/ljM28MFP - HP LaserJet Pro MFP M28-M31 | User Guide - Page 2
- HP LaserJet Pro MFP M28-M31 | User Guide - Page 3
HP LaserJet Pro MFP M28-M31 User Guide - HP LaserJet Pro MFP M28-M31 | User Guide - Page 4
to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors - HP LaserJet Pro MFP M28-M31 | User Guide - Page 5
views ...3 Printer front view ...3 Printer back view ...3 Control panel view ...4 Wireless models ...4 Base models ...5 Printer specifications ...6 Technical specifications ...6 Supported operating systems ...6 Mobile printing solutions ...7 Printer dimensions ...8 Power consumption, electrical - HP LaserJet Pro MFP M28-M31 | User Guide - Page 6
(wireless models only 30 5 Copy ...31 Make a copy ...32 Copy identification card ...33 6 Scan ...35 Scan by using the HP Scan software (Windows) ...36 Scan by using the HP Easy Scan Software (OS X) ...37 Additional scan tasks ...38 7 Manage the printer ...39 Change the printer connection type - HP LaserJet Pro MFP M28-M31 | User Guide - Page 7
52 Update the firmware using the Firmware Update Utility 52 8 Solve problems ...53 Customer support ...54 Laser Warning ...55 Interpret control-panel light patterns ...56 Restore the factory-set defaults ...60 A "Cartridge is low" or "Cartridge is very low" message displays 61 Change the "Very Low - HP LaserJet Pro MFP M28-M31 | User Guide - Page 8
the toner cartridge ...76 Check paper and the printing environment 76 Step one: Use paper that meets HP specifications 76 Step two: Check the environment 77 Adjust Print Density ...77 Resolving print quality problems ...79 Introduction ...79 Troubleshoot print quality problems ...79 Improve copy - HP LaserJet Pro MFP M28-M31 | User Guide - Page 9
www.hp.com/support. Select your country/region. Click Product Support & Troubleshooting. Enter the product name, and then select Search. HP's all-inclusive help for your product includes the following information: ● Install and configure ● Learn and use ● Solve problems ● Download software updates - HP LaserJet Pro MFP M28-M31 | User Guide - Page 10
Warning icons Warning icon definitions: The following warning icons may appear on HP products. Apply appropriate caution where applicable. ● Caution: Electric shock ● Caution: Hot surface ● Caution: Keep body parts away from moving parts ● Caution: Sharp edge in close - HP LaserJet Pro MFP M28-M31 | User Guide - Page 11
Printer views ● Printer front view ● Printer back view ● Control panel view Printer front view 1 2 3 4 1 Control panel 2 Flatbed scanner 3 Output bin 4 Input tray Printer back view 2 1 1 Power connection 2 USB interface port ENWW Printer views 3 - HP LaserJet Pro MFP M28-M31 | User Guide - Page 12
. If it is blinking, there is currently no wireless connection, or there is either a WPS or WiFi Direct configuration process in progress. If it is blinking rapidly, there is an issue with the wireless connection. Use this button to copy an identification card. Use this button to decrease the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 13
1 Copy ID button (HP LaserJet Pro MFP Use this button to copy an identification card. M29 only) 2 Start Copy button Use this button to start a copy job state. 5 Attention LED The Attention light blinks when the printer requires user attention. If the Attention light is on, the printer is in an - HP LaserJet Pro MFP M28-M31 | User Guide - Page 14
Mac computers are supported with this printer. Download HP Easy Start either from 123.hp.com/LaserJet or from the Printer Support page, and then use HP Easy Start to install the HP print driver. HP Easy Start is not included in the HP Software Installer. 1. Go to 123.hp.com/LaserJet. 2. Follow the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 15
OS X 10.13 To install the print driver, download HP Easy Start from 123.hp.com/LaserJet. Follow the steps provided to install the printer software and print driver. NOTE: For a current list of supported operating systems, go to www.hp.com/support/ljM28MFP for HP's allinclusive help for the printer - HP LaserJet Pro MFP M28-M31 | User Guide - Page 16
Weight (with cartridges) Printer fully closed 196 mm (7.7 in) 360 mm (14.2 in) 263 mm (10.4 in) 5.3 kg (11.7 lb) Printer fully open 447 mm (17.6 in) 360 mm (14.2 in) 390 mm (15.4 in) Power consumption, electrical specifications, and acoustic emissions See www.hp.com/support/ljM28MFP for current - HP LaserJet Pro MFP M28-M31 | User Guide - Page 17
Setup Poster and Getting Started Guide that came with the printer. For additional instructions, go to HP support on the Web. Go to www.hp.com/support/ljM28MFP for HP's all-inclusive help for the printer. Find the following support: ● Install and configure ● Learn and use ● Solve problems ● Download - HP LaserJet Pro MFP M28-M31 | User Guide - Page 18
10 Chapter 1 Printer overview ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 19
publication. For current information, see www.hp.com/ support/ljM28MFP. HP's all-inclusive help for the printer includes the following information: ● Install and configure ● Learn and use ● Solve problems ● Download software and firmware updates ● Join support forums ● Find warranty and regulatory - HP LaserJet Pro MFP M28-M31 | User Guide - Page 20
Load media with the top forward and the side to be printed on facing up. To prevent jams and skewing, always adjust the side media guide. NOTE: When you add new media, make sure that you remove all of the media from the input tray and straighten the entire stack. This - HP LaserJet Pro MFP M28-M31 | User Guide - Page 21
describes how to print and load envelopes. Tray 1 holds up to 5 envelopes. To print envelopes using the manual feed option, follow these steps to select the correct settings in the print driver, and then load the envelopes into the tray after sending the print job to the printer. Print envelopes - HP LaserJet Pro MFP M28-M31 | User Guide - Page 22
how to print and load labels. Tray 1 holds up to 50 sheets of labels. To print labels using the manual feed option, follow these steps to select the correct settings in the print driver, and then load the labels into the tray after sending the print job to the printer. When using - HP LaserJet Pro MFP M28-M31 | User Guide - Page 23
the toner cartridge For more information: The following information is correct at the time of publication. For current information, see www.hp.com/ support/ljM28MFP. HP's all-inclusive help for the printer includes the following information: ● Install and configure ● Learn and use ● Solve problems - HP LaserJet Pro MFP M28-M31 | User Guide - Page 24
Asia Pacific Countries/Regions (Exclude China, India) HP 48A Black Toner Cartridge Standard-capacity replacement black toner 48A cartridge For use only in China, India HP 47A Black Toner Cartridge Standard-capacity replacement black toner 47A cartridge Part number CF244A CF248A CF247A 16 - HP LaserJet Pro MFP M28-M31 | User Guide - Page 25
see cartridge replacement instructions. Reinsert the toner cartridge into the printer and close the cover. Item Description Cartridge number Supplies For use only in Europe, Russia, CIS, Mid East and Africa HP 44A Black Toner Cartridge Standard-capacity replacement black toner 44A cartridge - HP LaserJet Pro MFP M28-M31 | User Guide - Page 26
not touch the OPC cover or the roller surface. 3. Grasp both sides of the print cartridge and gently rock the print cartridge to distribute the toner evenly inside the cartridge. 4. Bend the tab on the left side of the cartridge until the tab breaks loose, and then pull the tab until all the tape is - HP LaserJet Pro MFP M28-M31 | User Guide - Page 27
from the print cartridge. 6. Insert the print cartridge in the product, and then close the print-cartridge door. CAUTION: If toner gets on your clothing, wipe it off with a dry cloth and wash the clothing in cold water. Hot water sets toner into the fabric. ENWW Replace the toner cartridge 19 - HP LaserJet Pro MFP M28-M31 | User Guide - Page 28
20 Chapter 3 Supplies, accessories, and parts ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 29
hp.com/ support/ljM28MFP. HP's all-inclusive help for the printer includes the following information: ● Install and configure ● Learn and use ● Solve problems ● Download software and firmware updates ● Join support printing, this HP LaserJet Pro may automatically enter cool down mode under - HP LaserJet Pro MFP M28-M31 | User Guide - Page 30
, click or tap the Properties or Preferences button to open the print driver. NOTE: The name of the button varies for different software programs. NOTE select the printer. 3. Click or tap the tabs in the print driver to configure the available options. 4. Click or tap the OK button to return to - HP LaserJet Pro MFP M28-M31 | User Guide - Page 31
support. 1. From the software program, select the Print option. 2. Select the printer from the list of printers, and then click or tap the Properties or Preferences button to open the print driver appropriate duplex option from the Print on Both Sides Manually drop-down list, and then click the OK - HP LaserJet Pro MFP M28-M31 | User Guide - Page 32
the Print option. 2. Select the printer from the list of printers, and then click or tap the Properties or Preferences button to open the print driver. NOTE: The name of the button varies for different software programs. NOTE: ● Windows 10: Select Print, and then select the printer. ● Windows 8.1 or - HP LaserJet Pro MFP M28-M31 | User Guide - Page 33
: This feature is available if you install the HP print driver. It might not be available if you are using AirPrint. 1. Click the File menu, and then click the Print option. 2. Select the printer. 3. Click Show Details or Copies & Pages, and then click the Manual Duplex menu. NOTE: The name of the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 34
Select the paper type (OS X) 1. Click the File menu, and then click the Print option. 2. Select the printer. 3. Click Show Details or Copies & Pages, and then click the Media & Quality menu or the Paper/Quality menu. NOTE: The name of the item varies for different software programs. 4. Select - HP LaserJet Pro MFP M28-M31 | User Guide - Page 35
the best choice, go to www.hp.com/go/ LaserJetMobilePrinting. NOTE: Update the printer firmware to ensure all mobile printing capabilities are supported. Wi-Fi Direct (wireless models only) Wi-Fi Direct enables printing from a wireless mobile device without requiring a connection to a network or the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 36
For Android devices that support Wi-Fi Direct, if the connection method is set to Automatic, the connection will occur automatically, without a password prompt. If the connection method is set to Manual, you will need to either press the Wireless button on the printer to connect to an Android device - HP LaserJet Pro MFP M28-M31 | User Guide - Page 37
tab, click the Wi-Fi Direct Setup link in the left navigation pane. HP printers are compatible with AirPrint, go to www.hp.com/go/LaserJetMobilePrinting. NOTE: Before using AirPrint with a USB connection, verify the version number. AirPrint versions 1.3 and earlier do not support USB connections - HP LaserJet Pro MFP M28-M31 | User Guide - Page 38
mobile devices to automatically find and print to HP printers that are either on a network or within wireless range for Wi-Fi Direct printing. The the HP Print Service Plugin. For more information on how to use Android embedded printing and which Android devices are supported, go to www.hp.com/ - HP LaserJet Pro MFP M28-M31 | User Guide - Page 39
publication. For current information, see www.hp.com/ support/ljM28MFP. HP's all-inclusive help for the printer includes the following information: ● Install and configure ● Learn and use ● Solve problems ● Download software and firmware updates ● Join support forums ● Find warranty and regulatory - HP LaserJet Pro MFP M28-M31 | User Guide - Page 40
. NOTE: To increase the number of copies, press the Start Copy to get multiple copies. button repeatedly (up to nine times) Wireless model control panel 1. Press the Copy Setup button to choose any of the following copy settings. ● Select the Number of Copies copies. setting, and then use the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 41
the same time. 1. Place the ID card onto the left side of the scanner glass. 2. Close the scanner lid and touch the ID Copy button LED blinks. to start copying. When it finishes, the attention 3. Place the second side of the ID card on the same section of the scanner glass. 4. Touch - HP LaserJet Pro MFP M28-M31 | User Guide - Page 42
34 Chapter 5 Copy ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 43
scan tasks For more information: The following information is correct at the time of publication. For current information, see www.hp.com/ support/ljM28MFP. HP's all-inclusive help for the printer includes the following information: ● Install and configure ● Learn and use ● Solve problems ● Download - HP LaserJet Pro MFP M28-M31 | User Guide - Page 44
printer name. ● Windows 7: From the computer desktop, click Start, select All Programs, click HP, click the folder for the printer, and then select the printer name. 3. In the HP Printer Assistant, select Scan, and then select Scan a Document or Photo. 4. Adjust the settings if necessary. 5. Click - HP LaserJet Pro MFP M28-M31 | User Guide - Page 45
scanner glass according to the indicators on the printer. 2. From the computer, open HP Easy Scan, which is located in the Applications folder. 3. Follow the on-screen instructions to scan the document. 4. When you have scanned all the pages, click File and then Save to save them to a file. ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 46
Additional scan tasks Go to www.hp.com/support/ljM28MFP. Instructions are available for performing specific scan tasks, such as the following: ● How to scan a general photo or document ● How to scan as editable text (OCR) ● How to scan multiple pages into a single file 38 Chapter 6 Scan ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 47
publication. For current information, see www.hp.com/ support/ljM28MFP. HP's all-inclusive help for the printer includes the following information: ● Install and configure ● Learn and use ● Solve problems ● Download software and firmware updates ● Join support forums ● Find warranty and regulatory - HP LaserJet Pro MFP M28-M31 | User Guide - Page 48
to the computer using a USB, or change the connection from a USB to a wireless connection. To open Device Setup & Software, complete the following procedure: 1. Open the HP Printer Assistant. ● Windows 10: From the Start menu, click All Apps, click HP, and then select the printer name. ● Windows - HP LaserJet Pro MFP M28-M31 | User Guide - Page 49
of printer and supplies events ● View and change network configuration The HP Embedded Web Server works when the printer is connected to an IP-based network. The HP Embedded Web Server does not support IPX-based printer connections. You do not have to have Internet access to open and use - HP LaserJet Pro MFP M28-M31 | User Guide - Page 50
down. ● System Setup: Change the system defaults for the printer. ● Supply Settings: Change the settings for Cartridge is low alert and other supplies information. ● Service: Perform the cleaning procedure on the printer. ● Administration: Set or change the printer password. Enable or disable - HP LaserJet Pro MFP M28-M31 | User Guide - Page 51
HP Connected Description Show the printer supplies status and gain access to links for ordering supplies online. Show information about the currently selected printer, including the printer Service upload the following types of files: ○ HP LaserJet printer command language (.PRN) ○ Portable document - HP LaserJet Pro MFP M28-M31 | User Guide - Page 52
should behave when supplies are nearing the end of their estimated life. Change paper size and type for each of the trays. Open the HP Embedded Web Server (EWS) for the printer. NOTE: USB connections are not supported. Configure a proxy server for the printer. 44 Chapter 7 Manage the printer ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 53
● Manually configure IPv4 TCP/IP parameters Introduction Use the following sections to configure the printer network settings. Printer sharing disclaimer HP does not support peer-to-peer networking, as the feature is a function of Microsoft operating systems and not of the HP printer drivers. Go - HP LaserJet Pro MFP M28-M31 | User Guide - Page 54
the option to continue to the website. Accessing this website will not harm the computer. 2. Click the Networking tab. 3. In the IPv4 Configuration area, select Manual IP, and then edit the IPv4 configuration settings. 4. Click the Apply button. 46 Chapter 7 Manage the printer ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 55
or change the system password using the HP Embedded Web Server Assign an administrator password for access to the printer and the HP Embedded Web Server so that unauthorized users cannot change the printer settings. 1. Open the HP Embedded Web Server (EWS): Direct-connected printers a. Open the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 56
NOTE: Make note of the password and store it in a safe place. 48 Chapter 7 Manage the printer ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 57
, and then select the printer name. b. In the HP Printer Assistant, select Print, and then select HP Device Toolbox. Network-connected printers a. Print a configuration page to determine the IP address or host name. i. Press and hold the Start Copy button until the Ready light begins blinking. ii - HP LaserJet Pro MFP M28-M31 | User Guide - Page 58
, and then select the printer name. b. In the HP Printer Assistant, select Print, and then select HP Device Toolbox. Network-connected printers a. Print a configuration page to determine the IP address or host name. i. Press and hold the Start Copy button until the Ready light begins blinking. ii - HP LaserJet Pro MFP M28-M31 | User Guide - Page 59
, and then select the printer name. b. In the HP Printer Assistant, select Print, and then select HP Device Toolbox. Network-connected printers a. Print a configuration page to determine the IP address or host name. i. Press and hold the Start Copy button until the Ready light begins blinking. ii - HP LaserJet Pro MFP M28-M31 | User Guide - Page 60
manually download and install the Firmware Update Utility from HP.com. NOTE: This method is the only firmware update option available for printers connected to the computer via a USB cable. It also works for printers connected to a network. NOTE: You must have a print driver -screen instructions to - HP LaserJet Pro MFP M28-M31 | User Guide - Page 61
print quality ● Resolving print quality problems ● Improve copy and scan image quality ● Solve wireless network problems For more information: The following information is correct at the time of publication. For current information, see www.hp.com/ support/ljM28MFP. HP's all-inclusive help for the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 62
for your country/region Have the printer name, serial number, date of purchase, and problem description ready Get 24-hour Internet support, and download software utilities and drivers Order additional HP service or maintenance agreements Register the printer Country/region phone numbers are on the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 63
Laser Warning CAUTION - CLASS 3B INVISIBLE LASER RADIATION WHEN OPEN. AVOID EXPOSURE TO THE BEAM. ATTENTION - RAYONNEMENT LASER INVISIBLE DE ÇLASSE 3B EN CAS D'OUVERTURE. ÉVITEZ L'EXPOSITION AU FAISCEAU. VORSICHT - UNSICHTBARE LASERSTRAHLUNG KLASSE 3B, WENN ABDECKUNG GEÖFFNET. NICHT DEM STRAHL - HP LaserJet Pro MFP M28-M31 | User Guide - Page 64
closed. The printer failed to pick a sheet of paper to print. Press Start Copy to continue. Paper is jammed in the input tray. Clear the jam. Paper is jammed in the toner cartridge area. Clear the jam. Paper is jammed in the output bin area. Clear the jam. 56 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 65
on the printer. Er/81 Incorrect firmware has been loaded. Press Start Copy firmware. to continue. Load the correct The Attention light is blinking and with the cartridge. The toner cartridge has been protected and is not allowed to be used in this printer. An unauthorized toner cartridge is - HP LaserJet Pro MFP M28-M31 | User Guide - Page 66
with the wireless Turn off the device and then turn it on. If the problem hardware. persists, contact HP support. Attention light is off and Ready light is on. The printer is in Ready mode. The LCD display will show the current value for the number of copies. NOTE: The Supplies LED might - HP LaserJet Pro MFP M28-M31 | User Guide - Page 67
will show the current value for the number of copies. For copy jobs, the LCD display will show the copy number being processed. For ID copy jobs, the LCD display will show "P1" while scanning the front of the identification card, and show "P2" while scanning the back of the identification card. The - HP LaserJet Pro MFP M28-M31 | User Guide - Page 68
HP Printer Assistant, select Print, and then select HP Device Toolbox. Network-connected printers a. Print a configuration page to determine the IP address or host name. i. Press and hold the Start Copy computer. 2. On the System tab, click Service. 3. In the Restore Defaults area, click the Restore - HP LaserJet Pro MFP M28-M31 | User Guide - Page 69
printer reacts when supplies reach the Very Low state. You do not have to reestablish these settings when you install a new toner cartridge. 1. Open the HP Embedded Web Server (EWS): Direct-connected printers a. Open the HP Printer Assistant. ● Windows 10: From the Start menu, click All Apps, click - HP LaserJet Pro MFP M28-M31 | User Guide - Page 70
to alert you that the cartridge is very low, but to continue printing. Order supplies Order supplies and paper Order through service or support providers Order using the HP Embedded Web Server (EWS) www.hp.com/go/suresupply Contact an HP-authorized service or support provider. To access, in - HP LaserJet Pro MFP M28-M31 | User Guide - Page 71
can help solve problems if the printer is sure the paper guides in the tray are adjusted correctly for the size of paper. Adjust the guides to the appropriate the stack of paper to the tray. 2. Use only paper that meets HP specifications for this product. 3. Use paper that is not wrinkled, folded - HP LaserJet Pro MFP M28-M31 | User Guide - Page 72
Clear paper jams Introduction The following information includes instructions for clearing paper jams from the printer. ● Jam locations ● Experiencing frequent or recurring paper jams 2 Input tray 3 Output bin NOTE: Jams can occur in more than one location. 64 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 73
System tab, and then click the Paper Setup page. d. Select the type of paper that HP Device Toolbox. c. On the System tab, click Service. d. In the Fuser Cleaning mode area, click Start to begin the cleaning process. 5. Print a configuration page to test the printer. a. Press and hold the Start Copy - HP LaserJet Pro MFP M28-M31 | User Guide - Page 74
If none of these steps resolves the problem, the printer might need service. Contact HP customer support. 66 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 75
angle can damage the product. NOTE: Depending on where the jam is located, some of the following steps might not be necessary. 1. Open the print-cartridge door, and then remove the print cartridge. 2. Remove the media stack from the input tray. ENWW Clear paper jams 67 - HP LaserJet Pro MFP M28-M31 | User Guide - Page 76
3. With both hands, grasp the side of the jammed media that is most visible (this includes the middle), and carefully pull it free from the product. 4. Reinstall the print cartridge, and then close the print-cartridge door. 68 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 77
Clear jams from inside the product 1. Open the print-cartridge door, and then remove the print cartridge. CAUTION: To prevent damage, do not expose the print cartridge to light. Cover it with a piece of paper. 2. If you can see the jammed paper, carefully grasp the jammed paper, and slowly pull it - HP LaserJet Pro MFP M28-M31 | User Guide - Page 78
3. Reinstall the print cartridge, and then close the print-cartridge door. 70 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 79
pliers, to remove jams. Damage caused by sharp objects will not be covered by the warranty. 1. Open the print-cartridge door, and then remove the print cartridge. 2. Keep the print cartridge door open, and then with both hands, grasp the side of the jammed media that is most visible (this includes - HP LaserJet Pro MFP M28-M31 | User Guide - Page 80
3. Reinstall the print cartridge, and then close the print-cartridge door. 72 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 81
● Check toner-cartridge status ● Cartridge cleaning ● Print a cleaning page ● Visually inspect the toner cartridge ● Check paper and the printing environment ● Adjust Print Density Introduction The following information provides troubleshooting steps to resolve print-quality problems, including the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 82
menu, select the printer. 3. By default, the print driver displays the Copies & Pages menu. Open the menus drop-down list, and then click the Finishing menu. 4. Select a type from the Media Type drop-down list. 5. Click the Print button. Check toner-cartridge status Follow these steps to check the - HP LaserJet Pro MFP M28-M31 | User Guide - Page 83
quality problems can occur when using a toner cartridge that is at its estimated end of life. The configuration report indicates when a supply level is very low. Once an HP toner cartridge has reached Very Low, HP's Premium Protection Warranty on that toner cartridge has ended. The toner cartridge - HP LaserJet Pro MFP M28-M31 | User Guide - Page 84
Print, and then select HP Device Toolbox. 3. On the System tab, click Service. 4. In the Fuser Cleaning mode area, click Start to begin the cleaning process. Visually inspect the toner cartridge Follow these steps to inspect the toner cartridge. 1. Remove the toner cartridges from the printer, and - HP LaserJet Pro MFP M28-M31 | User Guide - Page 85
, and then select the printer name. b. In the HP Printer Assistant, select Print, and then select HP Device Toolbox. Network-connected printers a. Print a configuration page to determine the IP address or host name. i. Press and hold the Start Copy button until the Ready light begins blinking. ii - HP LaserJet Pro MFP M28-M31 | User Guide - Page 86
safe, select the option to continue to the website. Accessing this website will not harm the computer. 2. Click the System tab, and then select System Setup from the left navigation pane. 3. Select the correct density settings. 4. Click Apply to save the changes. 78 Chapter 8 Solve - HP LaserJet Pro MFP M28-M31 | User Guide - Page 87
print ● Blank pages ● Black pages ● Dark or light bands ● Dark or light streaks ● Missing toner ● Skewed images ● Colors that do not align ● Curled paper Troubleshoot print quality problems Table 8-3 Image defects table quick reference Table 8-4 Light print on page 81 Table 8-5 Gray background - HP LaserJet Pro MFP M28-M31 | User Guide - Page 88
the cause, can often be resolved using the same steps. Use the following steps as a starting point for solving image defect issues. 80 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 89
. 2. Remove the cartridge, and then shake it to redistribute the toner. 3. Make sure that the cartridge is installed correctly. 4. Print a configuration report and check for life and usage of the cartridge. 5. Replace the cartridge. 6. If the problem persists, go to support.hp.com. ENWW Resolving - HP LaserJet Pro MFP M28-M31 | User Guide - Page 90
EWS, go to the Adjust Toner Density menu, and then adjust the toner density to a lower level. 5. Make sure that the printer is in within the supported operating temperature and humidity range. 6. Replace the cartridge. 7. If the problem persists, go to support.hp.com. Possible solutions 1. Make sure - HP LaserJet Pro MFP M28-M31 | User Guide - Page 91
page is black. Sample Possible solutions 1. Visually inspect the cartridge to check for damage. 2. Make sure that the cartridge is installed correctly. 3. Replace the cartridge 4. If the problem persists, go to support.hp.com. Table 8-8 Banding defects Description Sample Repetitive wide-pitch - HP LaserJet Pro MFP M28-M31 | User Guide - Page 92
of fill or in sections with no printed content. Possible solutions 1. Reprint the document. 2. Remove the cartridge, and then shake it to redistribute the toner. 3. If the problem persists, go to support.hp.com. NOTE: Both light and dark vertical streaks can occur when the printing environment is - HP LaserJet Pro MFP M28-M31 | User Guide - Page 93
recurrence. Fixing/fuser Poor fusing: Toner rubs off along either edge of guides are adjusted to the correct size for the paper. Do not adjust the paper guides tightly against the paper stack. Adjust them to the indentations or markings in the tray. 5. If the problem persists, go to support.hp - HP LaserJet Pro MFP M28-M31 | User Guide - Page 94
freshly opened paper. 3. Print in duplex mode. 4. If the problem persists, go to support.hp.com. 1. Reprint the document. 2. Extend the output bin extension. 3. If the defect is caused by extreme paper curl, complete the troubleshooting steps for Output curl. 4. Use a different paper type. 5. Use - HP LaserJet Pro MFP M28-M31 | User Guide - Page 95
copy and scan image quality Introduction If the printer is having image quality problems, first make sure you are using high-quality originals. If the problem Connect the power HP Embedded Web Server (EWS): a. Open the HP Printer Assistant. ● Windows 10: From the Start menu, click All Apps, click HP - HP LaserJet Pro MFP M28-M31 | User Guide - Page 96
, click HP, click the folder for the printer, and then select the printer name. b. In the HP Printer Assistant, select Print, and then select HP Device Toolbox. 2. On the Systems tab, click Paper Setup. 3. Change the necessary settings, and then click Apply. 88 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 97
select the printer name. b. In the HP Printer Assistant, select Print, and then select HP Device Toolbox. 2. On the Copy tab, select the Optimize drop-down list away from the corner indicated by the icon on the scanner. Recopy or scan in this position. ● When the original is the size of the printed - HP LaserJet Pro MFP M28-M31 | User Guide - Page 98
● Verify that the service set identifier (SSID) is correct. Print a configuration page to determine the SSID: a. Press and hold the Start Copy button until the Ready light begins blinking. b. Release the Start Copy button. If you are not sure the SSID is correct, run the wireless setup again ● With - HP LaserJet Pro MFP M28-M31 | User Guide - Page 99
devices. ● Verify that the print driver is installed on the computer. ● Verify that you have selected the correct printer port. ● Verify that the computer and printer connect to the same wireless network. ● For OS X, verify that the wireless router supports Bonjour. The printer does not print - HP LaserJet Pro MFP M28-M31 | User Guide - Page 100
b. Release the Start Copy button. b. Compare the service set identifier (SSID) on the configuration report to the SSID in the printer configuration for the computer. c. If the numbers are not the same, the devices are not connecting to the same network. Reconfigure the wireless setup for the printer - HP LaserJet Pro MFP M28-M31 | User Guide - Page 101
until the Ready light begins blinking. ii. Release the Start Copy button. b. Open a web browser, and in the address line lower signal strength. ● Position the wireless router in a central location in line of sight with the wireless printers on the network. ENWW Solve wireless network problems 93 - HP LaserJet Pro MFP M28-M31 | User Guide - Page 102
94 Chapter 8 Solve problems ENWW - HP LaserJet Pro MFP M28-M31 | User Guide - Page 103
41 HP EWS, using 41 HP Scan software (Windows) 36 HP Utility 43 HP Utility for Mac Bonjour 43 features 43 HP Utility, Mac 43 I image quality check toner-cartridge status 74 image quality issues examples and solutions 79 interface ports locating 3 Internet Explorer, versions supported HP Embedded - HP LaserJet Pro MFP M28-M31 | User Guide - Page 104
6 included 6 loading 12 locating 3 troubleshooting check toner-cartridge status 74 LED, errors 56 LED, light patterns 56 paper feed problems 63 wireless network 90 U USB port locating 3 W web browser requirements HP Embedded Web Server 41 Web sites customer support 54 weight, printer 8 Wi-Fi Direct
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User Guide
www.hp.com/support/ljM28MFP
LaserJet Pro MFP M28-M31