Laserjet 5000 error code 53.11.03 what do I need to do ?

follow the following instructions
The Short Cut Method"
1. Turn the printer off.
2. Hold down the [Item-] and [Value-] keys.
3. Now turn the printer on.
4. Wait for RESET MAINTENANCE COUNT to be displayed and then release both keys.
NOTE: Some versions of the LaserJet 5000 will NOT have their maintenance count reset by following the preceding "short cut" method. This is due to the many different formatter board revisions. If the short cut method doesn't reset the maintenance count then you will need to go into Service Mode to manually reset the maintenance count.

http://www.partsnow.com/docs/service-manuals/hp-laserjet-5000-service-manual.pdf

Hi,
I share a link for 79.00 error code related, please visit and follow instruction i hope solved your issues.
More info visit it:
http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay?javax.portlet.begCacheTok=com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken&javax.portlet.prp_ba847bafb2a2d782fcbb0710b053ce01=wsrp-navigationalState%3DdocId%253Demr_na-bpl07940-1%257CdocLocale%253D%257CcalledBy%253D&javax.portlet.tpst=ba847bafb2a2d782fcbb0710b053ce01&sp4ts.oid=25475&ac.admitted=1402430231517.876444892.199480143

Thanks,
HP Printer Support

In most cases, replacing the fuser.

Check your firmware for the printer. If not either the controller board is bad or one of the sensors is damaged.

no!

HP Laserjet 5000 Printer

01.Try to install the catridge properly once again after rebooting the Desktop / Laptop along with this Printer.
02. Check through CONTROL PANEL whether this particular HP laserjet 5000 printer is showing in the printer menu.
03. If is there, try to remove offline and make online.
04. If this HP Laserjet not available in the Printer menu, please insert the Printer driver cd and install this printer.
05. Try to ensure your desktop or laptop not affected with Virus. There might be a change, if the machine is virus affected, Printer offline problem will be shown.

Have a good day.

try to set the margins

You need to replace the fuser, here is an example of replacement part
HP Fuser for LaserJet 5000
These are instructions for replacement:
HP laserjet 5000 fuser instructions