Blank LCD, "Door Open" and Spanner Light lit on Aficio 350

[Ollie1981]

I'm having a spot of bother with a Lanier 5235 (Aficio 350/NAD30 in Ricoh parlance)

The copier is to all intents and purposes dead, with only the power led, the "door open" light and spanner light lit, the LCD display is blank therefore no SC code is displayed and the print engine is down so I can't get an SMC report.

Out of the PSU I'm only measuring a 5v out, no 12v or 24v

I've tried a new PSU - to no avail.

I've also tried a new toner bottle motor and I/O Board on a recommendation from another tech who's had a similar fault, again to no avail.

I have a feeling in my water that this is the I/O board being taken out by something, possibly a motor gone short.

Just wanted to know if any of you guys had come across anything similar.

[unisys12]

I have seen this before, even on the 1035 series. Replace the Input Panel and that will take care of your problem.

I like that quote too!

I have a feeling in my water...

[nmfaxman]

I have seen a blown fuse on the power supply cause the exact symptoms.

[Steve Perks]

I've seen the control panel cause this problem.
Disconnect it and re-measure the voltages.
Failing that, disconnect all but the input connectors to the PSU and reconnect one at a time until your voltages dissapear, then troubleshoot the offending output loom using the point to point wiring diagram.

[Ollie1981]

I'm going back with a whole bunch of parts including the control panel with the Tech Spec, so I'll let you guys know how it goes.

[Jomama46]

This is classic for a toner motor taking the IO board with it. As you said you have replaced both of those, I hope you did the motor and board at the same time. Good luck

[Ollie1981]

This is classic for a toner motor taking the IO board with it. As you said you have replaced both of those, I hope you did the motor and board at the same time. Good luck

Yeah put the toner bottle motor on first, then the IOB, switched the copier back on and got exactly the same fault.

Because most other techs I've spoke to have said that 90% of the time the toner bottle motor and IOB cause this fault. I'm wondering if in fact another motor or component is shorting out the same chip on the IOB. Maybe a tray lift motor or possibly even the main motor.

In which case I've just blew up a perfectly good IOB, oh well. I'm sure I'll get a good telling off about the cost of that later but I'm only human.

I couldn't get hold of a P-2-P diagram for this machine. I have the service and parts manuals, but no point to point so I'm a little confused as to where to start investigating.

[Jomama46]

Sometimes you can see the chip that is blown due to the fact that is was a short. I have never seen one that is shorted out of the box. I have always felt that the motor is binding up nd that causes the short. If you want the P2P I will email it to you.

[nmfaxman]

According to the service Manual FU1 on the power supply will cause a open door indicator.
This fuse can be taken out by the Toner Motor.
I was always told to KISS it. Keep It Simple Stupid.

[Ollie1981]

Update on this:-

It's looks like the Paper Feed board is at least partially to blame, swapping the PF board with another working NAD has cleared the doors open/spanner condition and allowed the customer to print via the controller.

......But the LCD display is still completely blank, he's swapped out the operator panel from a known working machine and the fault didn't move. i.e the ops panel was fine on the other machine and the other machine's ops panel was as dead as ever on this one.

It's a head scratcher.

Thanks everyone for your help. I'll let you know what the final outcome is when I get the report through.