HP 4300dtn printer

[Deano]

Hello guys
quick question for you, 1 of our clients has a HP 4300dtn, when they power on the device, it only boots up to the HP logo, and goes no further, any ideas? appreciatted

Thx in advance

[Rob Sandberg]

Remove the jetdirect card. Perform a cold reset. Does the printer now come ready?
Reinstall the jetdirect card. Does the printer come ready?
If not is it a JD 615n card?
If it is remove the plastic face T7 bit and bake the board at 350 degrees F for 8 mins.
Please someone here try this it works.

Rob S

[Deano]

thx rob, i will try that when i attend site 2morrow

[austonrush]

The Network card/Port is likely built into the the formatter board on this model.
If this is the case you will likely need to remove and replace the formatter/network card.
If it is a jet direct card remove it from the machine and see if the machine boots up. If it does not you will need a new formatter board. If it does boot up replace your jetdirect card or try to repair using the instructions above.
You can also try a NVRAM reset, though this will not likely resolve your issue.
Good Luck

[Rob Sandberg]

Brandon 55

I maybe wrong but I think the LJ 4300 did not have the internal network port. That came in the Lj 4350.

Rob S

[austonrush]

Hey Rob,
Sorry you are absolutely correct the 4300 does not have a built in NIC. My appologies

Also Deano if you determine it is a JD 615 card causing your issue. Make sure to replace it with a JD 620, not another 615!

Brandon

[Deano]

hello guys, you were right, removed the jet direct card, and it booted up fine, but getting the 59.4 error, and fuser drives assem needs replacing , so ive brought it back to workshop to fix
thx for your help guys

[Rob Sandberg]

Deano

From the service manual:

59.A or 59.4 EP Motor failure
(LJ 4300 only)

1.

Turn the printer off and then

on.

2.

Reconnect the EP-motor

wire-harness on the
DC controller PCA (location
J86).

3.

Replace the print-cartridge

motor. See

“Print-cartridge

motor (HP LaserJet 4300
series printer only)

” on

page 175

.

4.

Replace the

DC controller PCA. See

“

DC controller PCA” on
page 181.



For the service manual

hp Feed Rollers and Printer Parts @ Feedroller.com

Rob S

[LaserSharp]

4300 issues

Be prepared to have to Replace, the formatter, the Dc controller and the firmware...

Do NOT replace all three at once...replace the formatter first and boot it a few times, let it stay on for at least 5 mins, there is a good chance you will still have that code.

You never replace both the formatter and dc controller on one of these at the same time, as they exchange information.