HP LaserJet Pro 400 M401 User Manual

Memory
This product includes a memory panel that will accept the following third-party font and barcode
memory modules. Hewlett-Packard  does not sell these products.
● BarDIMM Pro, Jetmobile
● MicrDIMM Pro, Jetmobile
● TypeHaus Fonts and Barcodes Solutions, TypeHaus, Inc.
● Asian Fonts, JITCO, Ltd.
● BarDIMM® Box, Jetmobile
● BarSIMM 1.9, Jetmobile
● EIO Hard-Disk for LaserJet 
Series, Oberon Service SRL
● Ethernet to Token Ring 
Router (ETRR), Ringdale
● EuroForm Barcode 100, EuroForm A/S
ENWW Memory
79 

Update the firmware
HP offers periodic upgrades to the product firmware. You can load the firmware updates manually, or
you can set the product to automa tically load firmware updates.
Manually update the firmwa re (LCD control panel)
1.On the product control panel, press the  OK button to open the menus.
2. Open the following menus:
● Service
● LaserJet Update
● Check For Updates Now
3. Select the  Yes option, and then press the OK  button to prompt the product to search for firmware
updates. If the...

Set the product to automatically update the firmware (touchscreen
control panel)
NOTE: This section applies to the HP LaserJ et Pro 400 M401d Printer model only.
1.
From the Home screen on the prod uct control panel, touch the Setup  button.
2. Open the following menus:
● Service
● LaserJet Update
● Manage Updates
● Prompt Before Install
3. Touch the  Install Automatically  option.
ENWW Update the firmware
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82 Chapter 4   Manage and maintainENWW 

5 Solve problems
●Solve problems checklist
●
Restore the factory-set defaults
●
Control panel help system
●
Interpret control panel messages
●
Paper feeds incorrectly or becomes jammed
●
Clear jams
●
Improve print quality
●
The product does not print or it prints slowly
●
Solve walk-up USB printing problems
●
Solve direct connection problems
●
Solve wired network problems
●
Solve wireless network problems
●
Solve product software problems with Windows
●
Solve product software pr oblems with Mac OS X
●...

Solve problems checklist
Follow these steps when trying to solve a problem with the product.
●
Step 1: Make sure that the  product is set up correctly
●
Step 2: Check the cabling or wireless connection
●
Step 3: Check the control panel for error messages
●
Step 4: Check the paper
●
Step 5: Check the software
●
Step 6: Test print functionality
●
Step 7: Check the toner cartridge
●
Step 8: Try sending a print job from a computer
Step 1: Make sure that th e product is set up correctly
1.Press the power...

Step 3: Check the control panel for error messages
The product control panel should in dicate ready status. If an error message appears, resolve the error.
Step 4: Check the paper
1.Make sure that the paper that  you are using meets specifications.
2. Make sure that the paper is lo aded correctly in the input tray.
Step 5: Check the software
1.Make sure that the product software is installed correctly.
2. Verify that you have installed the print driver for  this product. Check the program to make sure...

Restore the factory-set defaults
Restoring the factory-set defaults returns all of the product and network settings to the factory defaults. It
will not reset the page count, tray size, or language. To restore th e product to the factory-default
settings, follow these steps.
CAUTION: Restoring the factory-set defaul ts returns all of the settings to the factory defaults, and it
also deletes any pages that are stored in the memo ry. The procedure then automatically restarts the
product.
Restore the...

Control panel help system
The HP LaserJet Pro 400 M401dn Printer and HP LaserJet Pro 400 M401dw Printer models have built-in
Help systems that explain how to use each screen. To open the Help system, touch the Help 
 button in
the upper-right corner of the screen.
For some screens, the Help opens to a global menu  where you can search for specific topics. You can
browse through the menu structure by  touching the buttons in the menu.
Some Help screens include animations that guide  you through...

Interpret control panel messages
Control panel message types
The control panel messages indicate the current product status or situations that might require action.
Alert and warning messages appear temporarily an d might require you to acknowledge the message
by pressing the  OK button to resume or by pressing the Cancel 
 button to cancel the job. With
certain warnings, the job might not complete or th e print quality might be affected. If the alert or
warning message is related to prin ting and the...