[Electrical] How do two used-toner-sensors work?

[scrathcyboy]

Hi, I have a Ricoh FT series, it was working fine until I got a used toner sensor error. I checked the toner full sensor, and it is working fine, but only getting 0.5 V instead of 5V DC. Does the other sensor control this? I would appreciate if someone can describe (electrically in specific detail) how the used toner bottle sensor works in league with the used toner full sensor. Since they are not in series, there must be some logic here. If you can explain the logic of those 2 sensors, please reply, else I don't need posts of no help. Thanks.

[mikadonovan]

A model number would help.

[scrathcyboy]

It's either the 7 series or the 6 series, they are basically the same setup in that area

[XXX]

Hi, I have a Ricoh FT series, it was working fine until I got a used toner sensor error. I checked the toner full sensor, and it is working fine, but only getting 0.5 V instead of 5V DC. Does the other sensor control this? I would appreciate if someone can describe (electrically in specific detail) how the used toner bottle sensor works in league with the used toner full sensor. Since they are not in series, there must be some logic here. If you can explain the logic of those 2 sensors, please reply, else I don't need posts of no help. Thanks.

They are both cherry/micro switches.
On the 6645 & 7650's one switch detects that the TCU is in place and the other one is activated when the recycling tube drive chain starts bouncing around after the TCU fills up or if the the recycling pipe is plugged up.

[scrathcyboy]

Thanks XXX, I know what the two switches do, as you explained, but BOTH are working fine, opening and closing. So the problem seems not to be in the switches themselves. Thus I wanted to know HOW they worked electrically, because the voltage to the toner full switch is only 0.5V and I would think it should be about 5V. SO with inadequate voltage, the switch will not appear to be open, only "shorted", hence interpreted as closed. So I am trying to find out if the other switch, bottle in place, controls that or not. Ideas?

[XXX]

Thanks XXX, I know what the two switches do, as you explained, but BOTH are working fine, opening and closing. So the problem seems not to be in the switches themselves. Thus I wanted to know HOW they worked electrically, because the voltage to the toner full switch is only 0.5V and I would think it should be about 5V. SO with inadequate voltage, the switch will not appear to be open, only "shorted", hence interpreted as closed. So I am trying to find out if the other switch, bottle in place, controls that or not. Ideas?

The simple answer is that no it does not and since Ricoh uses ground switching, simply measuring voltages without a schematic won't help you solve the problem. Now, if I knew which model you were working on, I could dust off the manual and maybe find an answer for you.

[scrathcyboy]

Thanks for the offer, the model is FT6655 and it would be nice to see a schematic, as the book I have doesn't have one in it.

[Ricohlovers]

Hi,

Go to www.maplecopiers.com and download the p2p for A175. This website can only be accessed from Internet Explorer.

Regards,

[scrathcyboy]

I tried the site you said, and all I get when downloading A175 is a file, vtu.htm which is the previous page's HTML list. Strange site, don't get a PDF.

[Ricohlovers]

what is your email?

[scrathcyboy]

what is your email?

I set up my account where you could send me PMs. Think you just click on my name and it will get you to where what you send goes to my gmail. Anyway, same name at gmail will do it. Thanks for the help !

[Ricohlovers]

Hi,

Please check your gmail account.

Thanks

[jonhiker]

PTP.pdf


here is the point-to-point diagram for that model

[Ricohlovers]

a175_p2p_page3_image1.jpg

[scrathcyboy]

That diagram is nice but unreadable. Can you email me the full res. version?