MPC7500 please wait

[Fearless V K]

I've fixed about 5 Ricoh boxes recently with a memory clear. Troubleshooting led in circles, and no components seemed bad under test or when measured with a meter. Replaced parts, boards, etc. before trying the memory clear.

My new policy is to perform the memory clear only as a last resort, but before replacing any expensive parts.

[Shadow1]

Check the tech bulletins before you do a memory clear - on D014 machines the older versions of firmware will wipe out the VBCU board

[Fearless V K]

Check the tech bulletins before you do a memory clear - on D014 machines the older versions of firmware will wipe out the VBCU board

Shadow1 is right...

Performing an NVRAM clear on D014/D015/D078/D079 can take out the VBCU. Other than those machines, I'm not aware of any issues with performing this.

Here are some details from the TSB...

The final resolution is new Engine firmware (P/N – D0145402K version 1. 51:01). This will prevent the data from being erased from IC2 on the VBCU Board when the NVRAM is cleared. In the event that an NVRAM clear appears necessary, it is recommended to replace it instead, if the firmware noted above is not loaded. As always, print out an SMC before replacing or clearing any NVRAM.

[spaceman99]

MPC 6000 please wait

I have also had this problem.

It was Please wait plus if you tried to go into SP mode it was in Japanese..

Fixed it by unplugging one HDD at a time and formatting. It would not do format all so I did it by doing the lowest format 1st and making my way up. It then recalled on me so replaces HDD and changed the firmware as a bundle as recommended by the bulletin and all has been well.

Hope this helps

[Dusty]

I didn't have any choice - the machine was effectively bricked otherwise, and I had replaced the vbcu anyway, as well as the controller.

[mikadonovan]

I have had this happen on a MP 7500. I discovered the plate that holds the front of the fuser in position was loose. Tightened it up to it's original position and problem was solved.

I am also having the exact same issue on a MPC6000. From what I am able to find out from the original Tech that went out there...she just went in to remove a fuser jam and then after closing the doors it would never warm up again. So far I have not found any pinched wires in that area. Very frustrating issue...Thanks for ANY ideas.. Just found out that the orginal Tech had replaced the HD's, VBCU board, Rear power supply, IPU board. both memory moduals and the main switch.

[knightfall]

Dear,
The better way to find out the problem is leave the door open,pull out all the trays,remove the connection of DF,pull out Transfer,fusing unit and switch on the machine.
If still please wait remains,its one of the board (VBCU).
I beleave you will able to locate the problem.
Regards,
Raja.

so Rajrajraja did you finally resolve your problem by replacing a third VBCU or did you do something different, I'm asking because I'm curious to know what you did considering this is your post and you did not post any information only the riddle you offered. Thank you.

[portviking]

I have left the front door opened...pulled out the duplex unit...pulled out the fuser unit and powered it up with no success. The VBCU, power board,IPU board, and Hard Drives have been replaced. I have swaped out the componets into a know working unit and they all performed perfectly. For some reason I am loosing the switched 24 v off the power board. All my 5 and 12 volts are there as is some of the other 24 volts. I am not getting any voltage reading off the 5 switches below the main switch. Ready to attach an anchor to this thing!!!

[Shadow1]

Its tripped the crowbar circuit in the power supply - don't ask me why they call it that, but it shuts down any output of the supply if it detects a dead short across it. Keeps it from smoking things (although so would the fuse)

You'll have to break out the point to point and unplug everything that uses that voltage, then start plugging things back in until you lose it again - then you know your in the right ballpark. If the machine doesn't smell like smoke then most likely its a pinched harness instead of a fried board, but not always.