[Dead] Ricoh aficio mp 4000

[fredr]

The printer power indicator blink green then goes off, the panel is blank and machine is silent. Please help what could be the problem. The printer is ricoh aficio mp 4000

[dalewb74]

Re: Ricoh aficio mp 4000

what have you tried to do to fix it?

[fredr]

Re: Ricoh aficio mp 4000

what have you tried to do to fix it?

Iniatially it had problem with blowing varistor and fu2 then i repaired the power board now it doesn't blow fu2 but if the power is switched on the power indicator blink green then goes off and the printer is silent

[zed255]

Re: Ricoh aficio mp 4000

Sounds like the PSU is going into over current protect. If you had bad components on the PSU board there may still be other issues not found and repaired. Try replacing the PSU.

If you are sure the PSU is functioning correctly then you have a short or faulty component elsewhere.

[luca72]

Re: Ricoh aficio mp 4000

Sounds like the PSU is going into over current protect. If you had bad components on the PSU board there may still be other issues not found and repaired. Try replacing the PSU.

If you are sure the PSU is functioning correctly then you have a short or faulty component elsewhere.

therefore the psu has been repaired, probably there are other faults on the board, on that model in the service manual there is the PtoP tries to check the outputs, some are missing.

[kyoceran]

Re: Ricoh aficio mp 4000

check to see if the screen shows the outline of an SC code eg 202 or similar, a lot of the time you need to replace the laser polygon mirror motor befor repairing/replacing the board concerned, and possibly one other pcb, good luck.

[luca72]

Re: Ricoh aficio mp 4000

The printer power indicator blink green then goes off, the panel is blank and machine is silent. Please help what could be the problem. The printer is ricoh aficio mp 4000

therefore the psu has been repaired, probably there are other faults on the board, on that model in the service manual there is the PtoP tries to check the outputs, some are missing.


I had told another by mistake

[MIKON]

Re: Ricoh aficio mp 4000

Unplug connectors on psu one at a time to see if it recovers and narrow down the location of the problem.....

[GIUBOSS]

Re: Ricoh aficio mp 4000

check to see if the screen shows the outline of an SC code eg 202 or similar, a lot of the time you need to replace the laser polygon mirror motor befor repairing/replacing the board concerned, and possibly one other pcb, good luck.

This problem occurs on the MP C2800 / 3300 series. It does not seem to interest the b / w

[GIUBOSS]

Re: Ricoh aficio mp 4000

TV or electronics service centers generally know how to repair power supply board at good prices

[luca72]

Re: Ricoh aficio mp 4000

TV or electronics service centers generally know how to repair power supply board at good prices

once a switch power supply is understood as a function, some faults are fairly easy to identify, the search procedure is more or less always the same, the problem is to test the pwm, or analyze signals from operational, you need the oscilloscope

[Mark Bbb]

Re: Ricoh aficio mp 4000

could be a blocked wire, somewhere.