Where is the primary transfer on the drum

One side prints are ok? Check in service mode if the potencial control (Po-cont) is off or on

E064-0000 Description The presence of a high-voltage error is communicated by the composite power supply PCB (The output for primary charging, developing, or transfer has deviated from a specific level of voltage) Causes The contact has poor connection. The wiring is faulty. The composite power supply PCB is faulty. The DC controller PCB is faulty. proce Remedy 1. Contact Is any of the contacts of the primary charging roller, developing assembly, or transfer charging roller soiled? Or, is there poor contact? YES: Clean the contact, and set it once again. 2. Wiring Is the wiring between the contacts for the following normal: DC controller PCB (J301), composite power supply PCB (J136), primary charging roller, developing assembly, transfer charging roller? a. DC controller PCB (J301) <-> composite power supply PCB (J136) b. composite power supply PCB (J130-7) <-> primary charging roller contact c. composite power supply PCB (J130-1) <-> developing assembly contact d. composite power supply PCB (FT133) <-> transfer roller contact NO: Correct the connection. 3. Composite power supply PCB, DC controller PCB Try replacing the composite power supply PCB. Is the problem corrected? YES: Yes. NO: Replace the DC controller PCB

It sounds like you are getting ghosting and either the Primary charge roller or the OPC (drum) are deteriorating. If the cartridge was an original, it is probably due to be replaced. If the cartridge was a refill, you should contact the company you got it from and have it checked.

TK1 Primary transfer unit counter has reached preset value or number.

To correct error, replace primary transfer belt/rollers. Enter calibration/diagnostic mode and reset counter.

E067 High voltage-related error

0100 The measured current of the primary
transfer ATVC is abnormal twice in
succession.
Check on the primary transfer roller spring, Clean
the position where the primary transfer roller
contacts, Replace the primary transfer roller,
Replace the drum unit Check a value
of COPIER> DISPLAY> MISC> DRM-LIFE, and
replace the drum unit if the value is near 100
because the drum may have reached its life
expectancy.
0110 The measured voltage of the primary
transfer ATVC is abnormal twice in
succession.
Turn OFF and back ON the main power

Hi katie44l:
Depending on the eviroment the printer is in depends on weather you have dust on the laser lenses. If you are in a dusty eviroment then the laser mirrors may have excessive dust on them preventing the laser beam from giving you the print quality that you need. The only way to fix this problem is to open the laser scanner motor assembly and clean the mirrors. That will require an HP certified technician to service the printer.

Image formation system
Laser printing requires the interaction of several different
technologies including electronics, optics, and electrophotographics
to provide a printed page. Each process functions independently and
must be coordinated with the other printer processes. Image
formation consists of seven processes:
Print cartridge
As the focal point of the image formation system, the print cartridge
contains toner and houses the cleaning, conditioning, and developing
stages of the process. The print cartridge contains the photosensitive
drum, primary charging roller, developing station, toner cavity, and
cleaning station. By including these components (which wear,
degrade, or are consumed) in the replaceable print cartridge, the
need for many service calls is eliminated. The special photosensitive
properties of the drum form an image on the drum surface and then
transfer the image to media.
CAUTION The print cartridge does not include a light-blocking shutter. Do not
expose the drum to light, which can permanently damage the drum.
Protect the print cartridge whenever you remove it.

Hope this helps.

if the paper is coming out blank then there is a problem with the Primary transfer.
this is located on top of the drum, it is a thin wire that charges up to make the copies, it may be broken not sitting correctly or bad.
take out the drum and look for a thin wire that is on the top of the drum,if you cannot find it replace the drum

Have you reseated the drum and toner?
It can be a drum cartridge problem. have you tried that?
You say copy or print, so I am asuming this is multifunction and you do both printing and copying.
1, Have you shook up the toner cartridge well.
After the drum and shaking the toner, I would suspect the transfer assembly, Off hand I cant remember of that machine has a transfer roller, or if there is a channel where there is a hair fine wire running through it.
The wire may have broken, or if its a roller making poor contact.
The laser is also possible.The transfer will be on the right had door assembly.
Take the cartridges out and see if there is anything laying loose in the machine,
what you are describing sounds more like a drum or transfer problem.
sounds very much like a defective transfer. And again, could easily be the drum.
Did you have a jam just before this occured? If you had a jam in particular in the right hand door, you broke the transfer wire.
Yeah, i am rambling huh?

hi im jules_09.try checking the transfer roller or the drum charge roller or charge wire both of this unit are responsible for blank copy.either there id a current leak on those parts or your drum and transfer power pack is deffective.is the opc drum not expose to light morethan 8minutes?just check the transfer unit then the drum charge wire or roller

It sounds like your transfer unit may be at fault. There may be a scrap of something caught somewhere in the mech or it could be that the unit is scratched or otherwise damaged. Try changing the unit.