Bizhub 283 C1004

[blackcat4866]

When you pin-out a wire harness, you're measuring resistance (preferably 0 Ω). You identify the proper connector on the finisher and the proper connector on the MFPB, and measure resistance from the pin on the finisher end to the pin on the copier end. I find that it's useful to make a chart on paper, then check them off as you go:

As an example:
Finisher: CN100 MFPB: CN3
Pin1 Pin3 0 Ω

The hardest part is finding the first connection. The rest are usually sequential. If you find a pin-out that's more than 0, possibly ∞, that could be a problem.

The thing that usually throws me when I'm pinning out harnesses is when the meter misbehaves. Occasionally check meter pin to pin to make sure you're getting 0 Ω. A bad meter lead or a bit of corrosion on the meter switch contacts can make it read wildly different. You're meter may be new, but for most of us the meter has been ratting around in the toolcase for at least a decade in highly humid conditions and temperatures from -10F to +100F. =^..^=

[copierknob]

Thank you very much.
The MFPB CN22 runs to CN93 connector that connects to CN83A on FS-529. I want to test CN22 and CN83A? Those pins are
1-6 TXD 2
2-5 GND
3-4 RXD1
4-3 GND
5-2 CTS
6-1 RTS

[blackcat4866]

Thank you very much.
The MFPB CN22 runs to CN93 connector that connects to CN83A on FS-529. I want to test CN22 and CN83A? Those pins are
1-6 TXD 2
2-5 GND
3-4 RXD1
4-3 GND
5-2 CTS
6-1 RTS

Yes, correct.

[copierknob]

Thank you. when those come back 0 I'll replace the MFPB?

I got the piece back in place on the broken FS-529. Getting the lift tray back in place is proving difficult. I broke one of the clips the manual calls "roll" on the upper shaft, not the one I removed. I got that one back in place. I can't get the thing to lay back down.

How do I get a setting to stay changed, like background removal level? Like ona Canon I have to go into the settings/registration to get the change to stick. Is there something like that for Konica also?

[blackcat4866]

I may miss a few keystrokes but it goes something like this:

Make the desired changes in the copy screen. Go to Utility > User Settings > Copy Settings > Copy Defaults > choose Factory Default or Current Settings > OK. You have to be quick enough that the machine doesn't default back to the home settings before you get it locked in. The same goes for scan settings (except ... Scan Settings > Scan Defaults ... etc. etc.). =^..^=

[copierknob]

Thank you for that! Got the broken finisher back together and ti was working when I left. So i can get back to the borken machine with a working finisher.

So these two items are on opposite sides. I can't see them both at the same time. How do I get my leads on the pins? The CN22 is behind the frame in this photo. Oh I guess I could unscrew the plug and maybe pull it out, that's the bottom red arrow which I guess is CN83 from CN93.
Attachment 38966

[copierknob]

I think I tested all 6 today and they were all 0. But I discovered what I was testing was CN22 on the PRCB, not MFPB. I am supposed to be testing something that connects from the MFPB to the FSCB? The wiring diagram shows it connected to the PRCB.
20180223_152434.jpg

[blackcat4866]

If it goes to the PRCB, then that's the board you'll need to replace. Be sure to follow the directions in the manual. It's not just a swap. =^..^=

[copierknob]

Yes the manual indicates I have to rewrite the firmware to the latest one. I already have that as I tried that as a fix. It says to move the EEPROM. Does that just pull off the old board?

It also says:
"When the EEPROM (IC51) is replaced to the brand new one, the error 'License management error occurred' will be occurred.
In this case, it is necessary to repair the i-Option license management information"

What does that mean?

[blackcat4866]

Yes the manual indicates I have to rewrite the firmware to the latest one. I already have that as I tried that as a fix. It says to move the EEPROM. Does that just pull off the old board? ...

Yes. I use a Husky branded Tack Puller:
Husky 4 in. Round Shaft Standard Tack Puller Screwdriver with Butyrate Handle-20117749 - The Home Depot

husky-specialty-screwdrivers-20117749-64_1000.jpg

... It also says:
"When the EEPROM (IC51) is replaced to the brand new one, the error 'License management error occurred' will be occurred.
In this case, it is necessary to repair the i-Option license management information"

What does that mean?

It means that you should swap the old EEPROM to the new board so this won't happen. =^..^=