HP LaserJet Pro 400 M401 User Manual

							Solve wireless network problems
NOTE:This section applies to the HP LaserJ et Pro 400 M401dw Printer model only.
Wireless connectivity checklist
●Verify that the network 
cable is not connected.
● Verify that the product and the wireless router ar
e turned on and have power. Also make sure that
the wireless radio in the  product is turned on.
● Verify that the service set identifi
er (SSID) is correct. Print a configuration page to determine the
SSID. If you are not sure the SSID is  correct, run the wireless setup again.
● With secured networks, verify that
 the security information is correct. If the security information is
incorrect, run the wireless setup again.
● If the wireless network is working correctly, try 
accessing other computers on the wireless network.
If the network has Internet acce ss, try connecting to the Internet over a wireless connection.
● Verify that the encryption method 
(AES or TKIP) is the same for the product as it is for the wireless
access point (on networks using WPA security).
● Verify that the product is within the range of the wireless network. For mo
st networks, the product
must be within 30 m (100 ft) of the wireless access point (wireless router).
● Verify that obstacles do not block the wireless 
signal. Remove any large metal objects between the
access point and the product. Make sure poles, walls, or support columns containing metal or
concrete do not separa te the product and wireless access point.
● Verify that the product is loca
ted away from electronic device s that might interfere with the
wireless signal. Many devices can interfere with the wireless signal including motors, cordless
phones, security system cameras, other wire less networks, and some Bluetooth 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 product 
connect to the same wireless network.
● For Mac OS X, verify that the 
wireless router supports Bonjour.
The product does not print afte r the wireless configuration
completes
1. Make sure that the product is tu rned on and in the ready state.
2. Turn off any third-party fi rewalls on your computer.
3. Make sure that the wireless network is working correctly.
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							4.Make sure that your computer is working co rrectly. If necessary, restart the computer.
5. Try manually configuring the product from the control panel.
The product does not print, and  the computer has a third-party
firewall installed
1. Update the firewall with the most recent  update available from the manufacturer.
2. If programs request firewall access when you inst all the product or try to print, make sure you
allow the programs to run.
3. Temporarily turn off the firewall, and then install  the wireless product on the computer. Enable the
firewall when you have complete d the wireless installation.
The wireless connection does not  work after moving the wireless
router or product
1. Make sure that the router or product connects to  the same network that your computer connects to.
2. Print a configuration page.
3. Compare the service set identifier (SSID) on th e configuration page to the SSID in the printer
configuration for the computer.
4. If the numbers are not the same, the devices are  not connecting to the same network. Reconfigure
the wireless setup for the product.
Cannot connect more computer s to the wireless product
1.Make sure that the other computers are within th e wireless range and that no obstacles block the
signal. For most networks, the wireless range is wi thin 30 m (100 ft) of the wireless access point.
2. Make sure that the product is tu rned on and in the ready state.
3. Turn off any third-party fi rewalls on your computer.
4. Make sure that the wireless network is working correctly.
5. Make sure that your computer is working co rrectly. If necessary, restart the computer.
The wireless product loses comm unication when connected to a
VPN
● Typically, you cannot connect to a VPN an
d other networks at the same time.
The network does not appear in the wireless networks list
●Make sure the wireless router 
is turned on and has power.
● The network might be hidden. However, yo
u can still connect to a hidden network.
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							The wireless network is not functioning
1.Make sure that the network cable is not connected.
2. To verify if the network has lost communication , try connecting other devices to the network.
3. Test network communication by pinging the network.
a. Open a command-line prompt on your computer. For Windows, click  Start, click Run, and
then type  cmd.
b. Type  ping followed by the router IP address.
For Mac OS X, open the Network Utility, and th en supply the IP address in the correct field in
the  Ping  pane.
c. If the window displays  round-trip times, the network is working.
4. Make sure that the router or product connects to  the same network that the computer connects to.
a. Print a configuration page.
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 device s are not connecting to the same network.
Reconfigure the wireless setup for the product.
Perform a wireless network diagnostic test
From the product control panel, you can run a diagno stic test that provides information about the
wireless network settings.
1. From the Home screen on the prod uct control panel, touch the Setup 
 button.
2. Open the following menus
● System Setup
● Self Diagnostics
3. Touch the  Run Network Test  button to start the test. The produc t prints a test page that shows
test results.
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							Reduce interference on a wireless network
The following tips can reduce inte rference in a wireless network:
● Keep the wireless devices away fr
om large metal objects, such as filing cabinets, and other
electromagnetic devices, such as  microwaves and cordless telephones. These objects can disrupt
radio signals.
● Keep the wireless devices away from large masonry 
structures and other building structures. These
objects can absorb radio waves and lower signal strength.
● Position the wireless router in a central location in
 line of sight with the wireless products on the
network.
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							Solve product software problems with Windows
A print driver for the product is not visible in the Printer folder
1.Reinstall the product software.
NOTE: Close any applications that are  running. To close an application that has an icon in the
system tray, right-click the icon, and select  Close or Disable .
2.Try plugging the USB cable into a different USB port on the computer.
An error message was  displayed during the software installation
1.Reinstall the product software.
NOTE: Close any applications that are  running. To close an application that has an icon in the
system tray, right-click the icon, and select  Close or Disable .
2.Check the amount of free space on the drive wh ere you are installing the product software. If
necessary, free up as much  space as you can, and reinstall the product software.
3. If necessary, run the Disk  Defragmenter, and reinstall the product software.
The product is in Ready  mode, but nothing prints
1.Print a configuration page, and ve rify the product functionality.
2. Verify that all of the cables are correctly seated  and within specifications. This includes the USB
and power cables. Try a new cable.
3. Verify that the IP address on the configuration pa ge matches the IP address for the software port.
Use one of the following procedures:
Windows XP, Windows Server 2003, Windows Server 2008, and Windows Vista a.Click  Start .
b. Click  Settings .
c. Click  Printers and Faxes  (using the default Start menu view) or click  Printers (using the
Classic Start menu view).
d. Right-click the product driver icon, and then select  Properties.
e. Click the  Ports tab, and then click  Configure Port.
f. Verify the IP address, and then click  OK or Cancel .
g. If the IP addresses are not the same, delete  the driver, and reinstall the driver using the
correct IP address.
h. Create a new HP TCP/IP port using the correct IP address.
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							Windows 7a.Click  Start .
b. Click  Devices and Printers .
c. Right-click the product driver icon, and then select  Printer properties.
d. Click the  Ports tab, and then click  Configure Port.
e. Verify the IP address, and then click  OK or Cancel .
f. If the IP addresses are not the same, delete  the driver, and reinstall the driver using the
correct IP address.
g. Create a new HP TCP/IP port using the correct IP address.
4. Try using the IP address to open the HP Embe dded Web Server in a supported Web browser.
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							Solve product software problems with Mac OS X
●The print driver is not listed in the Print & Fax or Print & Scan list
●
The product name does not appear in the produc t list in the Print & Fax or Print & Scan list
●
The print driver does not automati cally set up the selected product in the Print & Fax or Print &
Scan list
●
A print job was not sent to the product that you wanted
●
When connected with a USB cable, the product does  not appear in the Print & Fax or Print & Scan
list after the driver is selected.
●
You are using a generic print driver when using a USB connection
The print driver is not  listed in the Print & Fax or Print & Scan list
1.Make sure that the product .GZ file is  in the following hard-drive folder: Library/Printers/
PPDs/Contents/Resources . If necessary, reinstall the software.
2. If the GZ file is in the folder, the PPD file might  be corrupt. Delete the file and then reinstall the
software.
The product name does not appear in  the product list in the Print &
Fax or Print & Scan list
1. Make sure that the cables are connected correctly and the product is on.
2. Use the  + button to add the product to the  Print & Fax (Print & Scan  in Mac OS X v10.7) list.
3. Replace the USB or network ca ble with a high-quality cable.
The print driver does not automatically set up  the selected product
in the Print & Fax or Print & Scan list
1. Make sure that the cables are connected correctly and the product is on.
2. Make sure that the product .GZ file is  in the following hard-drive folder: Library/Printers/
PPDs/Contents/Resources . If necessary, reinstall the software.
3. If the GZ file is in the folder, the PPD file might  be corrupt. Delete the file and then reinstall the
software.
4. Use the  + button to add the product to the  Print & Fax (Print & Scan  in Mac OS X v10.7) list.
5. Replace the USB or network ca ble with a high-quality cable.
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							A print job was not sent to the product that you wanted
1.Open the print queue and restart the print job.
2. Another product with the same or  similar name might have received your print job. Print a
configuration page to check the  product name. Verify that the name on the configuration page
matches the produc t name in the Print & Fax  (Print & Scan  in Mac OS X v10.7) list.
When connected with a USB cable,  the product does not appear in
the Print & Fax or Prin t & Scan list after the driver is selected.
Software troubleshooting
1.Make sure that your Mac operating  system is Mac OS X 10.5 or later.
2. Use the  + button to add the product to the  Print & Fax (Print & Scan  in Mac OS X v10.7) list.
Hardware troubleshooting 1.Make sure that the product is turned on.
2. Make sure that the USB cable is connected correctly.
3. Make sure that you are using the appropriate Hi-Speed USB cable.
4. Make sure that you do not have too many USB  devices drawing power from the chain. Disconnect
all of the devices from the chain, and then conne ct the cable directly to the USB port on the
computer.
5. Check to see if more than tw o non-powered USB hubs are conne cted in a row on the chain.
Disconnect all of the devices from the chain, an d then connect the cable directly to the USB port
on the computer.
NOTE: The iMac keyboard is a non-powered USB hub.
You are using a generic print driv er when using a USB connection
If you connected the USB cable before you installe d the software, you might be using a generic print
driver instead of the driver for this product.
1. Delete the generic print driver.
2. Reinstall the software from the product CD. Do  not connect the USB cable until the software
installation program prompts you.
3. If multiple printers are installe d, make sure that you have sele cted the correct printer in the
Format For  drop-down menu in the  Print dialog box.
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							Remove software (Windows)
Windows XP1.Click  Start, and then click  Programs.
2. Click  HP, and then click the product name.
3. Click  Uninstall , and then follow the onscreen instructions to remove the software.
Windows Vista and Windows 7 1.Click  Start, and then click  All Programs.
2. Click  HP, and then click the product name.
3. Click  Uninstall , and then follow the onscreen instructions to remove the software.
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							Remove software (Mac OS X)
You must have administrator rights to remove the software.
1.Disconnect the product from the computer.
2. Open  Applications .
3. Select  Hewlett Packard .
4. Select  HP Uninstaller .
5. Select the product from the list of devices, and then click the  Uninstall button.
6. After the software is uninstalled, re start the computer and empty the Trash.
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