Sc-390 on gestentner DSM 620d

[Llama God]

Re: Sc-390 on gestentner DSM 620d

only TONER DENSITY SENSOR or CONNECTING JACK

Is Connecting Jack a spin-off of Free Willy?

[pradeesh001]

Re: Sc-390 on gestentner DSM 620d

Is Connecting Jack a spin-off of Free Willy?

i'm saying about connecting socket inside the machine

[jake24482]

Re: Sc-390 on gestentner DSM 620d

no nothing is loose i just put new td sensor and initialize developer again still doing same thing .is ther a way to clear the main board or power supply board or any other idea

[Llama God]

Re: Sc-390 on gestentner DSM 620d

Do you have another PCU handy to try to eliminate things?

[jake24482]

Re: Sc-390 on gestentner DSM 620d

unfortunately no

[Llama God]

Re: Sc-390 on gestentner DSM 620d

Now you did put the correct dev in, didn't you? B1219640, I believe.

[jake24482]

Re: Sc-390 on gestentner DSM 620d

that is the part #b121-9640

[Llama God]

Re: Sc-390 on gestentner DSM 620d

Well, as you didn't have the fault before you started but you did afterwards, I'd go with an original drum, blade and replacing the dev again, just to rule all of that out.

I'd like to add that we use compatible drums and blades for these machines too, so I'm not having a pop about that!

[jake24482]

Re: Sc-390 on gestentner DSM 620d

yeah i will try some tomorrow and let you guys know if i get somewhere thanks alot for all the info
thanks again

[jake24482]

Re: Sc-390 on gestentner DSM 620d

Alright this is all i did .starting from binging customer call for machine was making noise .i went out and saw the gearing system in dv assembly was bad that was causing the noise and making light copies .we replace all five gear and developer . and then machine start popping the Sc390 code .then we replace TD sensor .it still popping the same code .i took the whole drum assembly to an other machine it is popping the same code there as well .if someone has any info about this issue please share what might be causing this.
any information will be appreciated
thanks a lot guys

[pradeesh001]

Re: Sc-390 on gestentner DSM 620d

Causes of sc-390

* lack of developer quantity

* if agitators are not rotating properly

* td sensor or sensor connector

* td sensor connecting jack on machine

* mother board


but in your case pls check first 3 reasons



regards


pradeesh

[TonerMunkeh]

Re: Sc-390 on gestentner DSM 620d

It sounds like the PCU's just had it. They do expire after a while.

[vargue]

Re: Sc-390 on gestentner DSM 620d

i meet this threat in aficio 1022 the image have back ground very dirty... first i make free run 100 copies i suspect in toner i exhausted all toner until t toner signal appear i realized that vt and vts is 0 and when i make dev initialization sc 390 appeared .then switch machine on. sc 390 will dis appear . then yo will get faint image make required maintenance image will be fine...

[rsyarcia]

Re: Sc-390 on gestentner DSM 620d

we encountered this problem and symptom with the same model. we isolated the problem by replacing the developer, initialized it without the toner cartridge. made a copy until the machine asked for toner.Then we inserted the old duplicate toner. When the toner is already loaded we copied some documents but then Error SC 390 pops. So you have to make sure when you change the developer don't use that old toner replace it with orig. As you have said, you tried the pcu on another machine but the same problem so it means the culprit is inside the dev't unit.This is an issue of developer and toner.

[jake24482]

Re: Sc-390 on gestentner DSM 620d

well i ordered new developer and TD sensor .i will set you know if that will fix it i will fallow instructions .i will let you guys know
thanks for your time