Greetings, all.
I have a Ricoh B039 copier (acquired under the Savin brand, model 2515). Recently I disassembled much of it to replace a bunch of parts with new ones from a maintenance kit. That solved a problem with it up to that point, but now a new one is present.
The long story about diagnosis aside, using Service Program 2-220 from the Service Manual, the TD sensor is reading 0.00V all the time. Due to this, making more than a few copies at a time results in SC390 popping up, and I think it will never demand toner from the cartridge - although the copies seem all right for now.
Even after ordering a replacement TD sensor on eBay and installing it, the problem persists.
At this point, I speculate that, similar to tcs04's assessment in this thread, my sensor is blown, and further, I unwittingly blew the new sensor as well. (Incidentally, my boss saw me working on the PCU and "helpfully" vacuumed the toner out of it - which tcs04 cited as one way you might blow the sensor, on that model at least.)
Alternately, I've considered the possibility that the TD sensor no longer connects properly to the hardware- but the copier tells if the PCU is in or not based solely on that plug being in place (I've plugged the old, disconnected sensor in, and it recognized the PCU being "in"), so I doubt this scenario. This could be the correct diagnosis if some pins connect properly, allowing the hardware to detect it, but others are not, resulting in the null reading, but this strikes me as monumentally unlikely.
I'm willing to order another new TD sensor (and plan to do so presently), but I'd like to submit my problem to this knowledgeable community and solicit advice- there's no point in ordering new parts just to blow them again when I don't know how to prevent it.
If you have any advice, I would greatly appreciate it.
I have a Ricoh B039 copier (acquired under the Savin brand, model 2515). Recently I disassembled much of it to replace a bunch of parts with new ones from a maintenance kit. That solved a problem with it up to that point, but now a new one is present.
The long story about diagnosis aside, using Service Program 2-220 from the Service Manual, the TD sensor is reading 0.00V all the time. Due to this, making more than a few copies at a time results in SC390 popping up, and I think it will never demand toner from the cartridge - although the copies seem all right for now.
Even after ordering a replacement TD sensor on eBay and installing it, the problem persists.
At this point, I speculate that, similar to tcs04's assessment in this thread, my sensor is blown, and further, I unwittingly blew the new sensor as well. (Incidentally, my boss saw me working on the PCU and "helpfully" vacuumed the toner out of it - which tcs04 cited as one way you might blow the sensor, on that model at least.)
Alternately, I've considered the possibility that the TD sensor no longer connects properly to the hardware- but the copier tells if the PCU is in or not based solely on that plug being in place (I've plugged the old, disconnected sensor in, and it recognized the PCU being "in"), so I doubt this scenario. This could be the correct diagnosis if some pins connect properly, allowing the hardware to detect it, but others are not, resulting in the null reading, but this strikes me as monumentally unlikely.
I'm willing to order another new TD sensor (and plan to do so presently), but I'd like to submit my problem to this knowledgeable community and solicit advice- there's no point in ordering new parts just to blow them again when I don't know how to prevent it.
If you have any advice, I would greatly appreciate it.
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