[Misc] Sharp AR 450

[jcontractor]

Hi,

Somebody know where to find a procedure to change the developer in a sharp ar450.
Question: The service manual said that the developer have an automatic calibration option in the service mode. If I change the developer, may I run this automatic procedure for calibration?

The procedure is this:
[IMG]file:///C:/Users/JESUSV%7E1/AppData/Local/Temp/moz-screenshot-1.png[/IMG][IMG]file:///C:/Users/JESUSV%7E1/AppData/Local/Temp/moz-screenshot-2.png[/IMG]
P-*-C-*-2-5-Start-2-Start

This is an automatic Developer calibration in the service manual section 6-8 for a Sharp AR 450.

May I run this calibration in developer unit. I don't know if this procedure is for an initial machine setup when is new.

[Silvertoast]

that is the procedure for nearly all sharps, just make sure after u change the the developer do not close the front door till u are ready to execute the procedure.

[jcontractor]

Sharp AR 450

Thanks a lot. I need to close the front door after execute the calibration?

[jcontractor]

I have the answer, the service manual explain in detail the procedure.

Thanks for your valuable time.

[blackcat4866]

Also remember to clear the developer count (24-05), and the developer rotation time (24-11-02). You can get some really unpredictable quality issues if these counters are not reset. =^..^=

[jcontractor]

Sharp

Rigth now i have blank copies, what could be. Tje items that you mention, clear the counters?

Do I have to change the drum unit??

Please advice, it is a real problem right now?

[CopierTechofOmens]

Blank copies? What about internal prints? Any DV on the mag roller? Image on drum? Is the developer latch engaged?

[Dark Helmet]

Is this a ARM450 or a ARM450N or ARM450U ?? The first number of the machines serial would tell us a little bit as well as to how old this guy is.

What is the total count on this machine? Hold down the COPY button beside the touch screen or use sim 22-1. Sim 22-6 will give you a all settings list which you can scan to us if needed.


Chances are if your doing DV you need a drum as well. North America uses AR451DR (drum) and AR450KA1 (blade and seals) to rebuild that drum frame.

Reset Sim: 24-4 / 24-5 / 24-7 / 24-11 Drum & DV rotation timers.
Fill your DV unit and install leaving the front door open. Enter Sim 25-2 close the front door and hit start, wait for it to finish and hit CA. You should of got a value between 100-120

Enter custom settings and run a list print & all custom settings list. If this is blank as well you have a engine problem. As posted above check your mag roller, main charge etc etc. You can trip the left hand side door switch and make a copy from tray 1 if you hold the gate shut, then you can watch the drum. It's located at the top rear corner of the machine. A old corona cleaner works great.

[jcontractor]

I will check all this information as soon as possible and I will let you know the final results.
I appreciate all your comments.

[jcontractor]

Sharp ARM 450N

This as an Sharp ARM 450N, we will replace drum and cleaning blade. It is in transit from our supplier.

The value of the DV calibration is right now 70.
I don't have the machine around right now, but i will proceed to print the settings and scan it. Also perform the counters reset for all the items that you mention.

I don't print any report jet directly from the machine memory, I will.

[blackcat4866]

Your developer stir reading of 70 is very low, too low. It should be in the range of 95 to 105. You should take a look at the developing unit drive. It is common for the endcap of the developing roller to break loose from the roller. So the drive coupler turns but the roller does not. Or the coupler itself may be stripped. =^..^=

[jcontractor]

I'm obtained gray backgroud of the copy.
And very low developer calibration results, like 85.

[blackcat4866]

Your developer stir reading of 70 is very low, too low. It should be in the range of 95 to 105. You should take a look at the developing unit drive. It is common for the endcap of the developing roller to break loose from the roller. So the drive coupler turns but the roller does not. Or the coupler itself may be stripped. =^..^=

Still. =^..^=

[jcontractor]

Thanks for your reply: I will check the machine again tomorrow during afternoon probably.
The first thing that i will check is if the developer unit is turning.
Also if I don't have any advance, I will send a Scan of the copy.

I will have my laptop with internet connection.

Thanks, Happy Holidays. Good bless you and your family.