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10.6: Faxing with HP Color LaserJet 2840 Printers
Snow Leopard only hintIf you use the HP Color LaserJet 2840 All-In-One printer and are unable to Fax through it in Snow Leopard, here is a possible solution.

Faxing used to work fine with this device in 10.5 (Leopard), but the CUPS drivers built in to Snow Leopard for it don't support faxing correctly. So the working 10.5 drivers from HP are the place to begin.
  • Install the 10.5 drivers for this printer available from HP.
  • Configure your printer (I used an ethernet connection).
  • Edit /etc/cups/printers.conf in your favorite text editor and change the device uri to:
    DeviceURI HPLaserJetFax://socket://HP%20Color%20LaserJet%202840.local.?vendor=Hewlett-Packard&product=HP%20Color%20LaserJet%202840
  • Change the owner of /usr/libexec/cups/backend/HPLaserJetFax
    sudo chown root:wheel /usr/libexec/cups/backend/HPLaserJetFax
  • Restart CUPS
    sudo killall -HUP cupsd
  • Send a test fax from your Mac.
It should be working normally again at this point.

[crarko adds: I haven't tested this one. Snow Leopard did break a few multi-function printers and I wonder if a similar fix could be found for others.]
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10.6: Faxing with HP Color LaserJet 2840 | 4 comments | Create New Account
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Warning: The install closes all open apps and reboots
Authored by: sr105 on Jul 12, '10 12:10:17PM

Thanks! I've never been able to even print to our 2840s here at the office let alone fax. It should be noted, though, that the installer from HP first closes all of your open apps, then installs, then prompts you to reboot.

Update: Faxing doesn't work
/usr/libexec/cups/backend/HPLaserJetFax failed

Printing is all I cared about, though.

Edited on Jul 12, '10 12:20:17PM by sr105

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Authored by: hidalgo on Jul 12, '10 11:43:04PM

Maybe your device URI should be different. I copied it from a working installation under Mac OS X 10.5.

[ Reply to This | # ]
Authored by: sr105 on Jul 13, '10 07:25:05AM

You're correct. I just blindly ran your instructions. I changed the hostname in the URI and it worked perfectly. Thank you.

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10.6: Faxing with HP Color LaserJet 2840
Authored by: charliez on Dec 31, '11 02:30:44AM

Success on 10.6.8, the original tip missed a few steps.

1. Delete the <printer> section that refers to the Fax printer in the /etc/cups/printers.conf file (save it to a backup file though!)
2. Open System Preferences > Printers & Fax -> Add a printer (i.e. click the + sign)
3. Choose the "Default" column
4. Select the HP laserjet (should come up as the only one)
5. Name it appropriately (I just added the word "Fax" to the end of it)
6. Click the "Print Using" list and choose the HP Laserjet Series CUPS v1.1
7. Click "Add" button.

I now have a working Fax! (The topping on the cake is you can share the fax on the network!!!)

Enjoy :-)

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