IPF 9100 Multisensor error

[Canuck]

Re: IPF 9100 Multisensor error

How old are the print heads?(dot count,age). If you let these print heads go too long they will short and fry circuit boards. If beyond warranty stage, I would tell customer print heads need to be replaced before installing new circuit boards. It usually fries the main controller. If you don't change the heads first, you will fry the new board. This will lead you to believe that your troubleshooting is incorrect. Been here a few times.

[xsaver]

Re: IPF 9100 Multisensor error

I finally understand why Carriage PCB fuse (FU101) Blows.
after many time immediately head clean, head print was damaged and i think drain current from 3.3 rail volt.
after that first fuse on circuit blows (exist on carriage PCB). my both head PCB death and can`t detect by any printer.
I replace them with 2 old head and printer get ONLINE.
after buy two new head,i say my printer was repaired or not.

a notice: dead head on this situation will be check able by multi-meter. on attache picture, if head was dead blue mark pinout in Diode test mode at both side show some volt, but healthy head depending is left or right just one side show volt.
thanks eUuGW1B.jpg

[xsaver]

Re: IPF 9100 Multisensor error

How old are the print heads?(dot count,age). If you let these print heads go too long they will short and fry circuit boards. If beyond warranty stage, I would tell customer print heads need to be replaced before installing new circuit boards. It usually fries the main controller. If you don't change the heads first, you will fry the new board. This will lead you to believe that your troubleshooting is incorrect. Been here a few times.

my head is old but dead and can`t say how much is working.
very thanks for your guidance, i use your tips.

[xsaver]

Re: IPF 9100 Multisensor error

A simple new question.
I check some other element on carriage PCB broad.
i found a fuse (FU302) that was actually resistor with 501 code, that means must have 500 ohm,
but with multi-meter this resistor is short circuit with approximate 0 ohm.
is this another fault ?
ODxVXHf.jpg
bigger picture
QVA5xO3.jpg

[Canuck]

Re: IPF 9100 Multisensor error

FU302 is a fuse....it should be a short if ok. A resistor won't say 501 on it...rated with coloured bands. Measuring while component still on board means nothing. As soon as you put you voltmeter across it, you have just put a huge resistor in parallel(internal resistance of meter)

[teckat]

Re: IPF 9100 Multisensor error

A simple new question.
I check some other element on carriage PCB broad.
i found a fuse (FU302) that was actually resistor with 501 code, that means must have 500 ohm,
but with multi-meter this resistor is short circuit with approximate 0 ohm.
is this another fault ?
[ATTACH=CONFIG]30846[/ATTACH]
bigger picture
[ATTACH=CONFIG]30848[/ATTACH]

Follow the bus line on board to see what it protects up and down
also look on underside of board for burn outs

[xsaver]

Re: IPF 9100 Multisensor error

Follow the bus line on board to see what it protects up and down
also look on underside of board for burn outs

underside of broad seems be OK!
fuse (FU302) on Carriage PCB pass-though 32V from Main PCB to Source pin on All(4) MOS-FET transistor on Carriage board.
you know is that fuse or dead resistor (short circuit resistor)?

[MKalnins]

Re: IPF 9100 Multisensor error

I use normal soldering iron to replace. not use any type of hot air or heater.

That is not what was implied. When soldering at the PWB level, whether the component is through hole or SMD, it is HUGELY important to protect the surrounding components from the heat. At the very minimum, any component that is on the same bus and near to where you are attempting your fix, has to have the heat sinked away. I'm probably right in assuming the iron you are using has no way of controlling the output temperature and without that, even attempting a board level repair is an exercise in futility. Replace the board.