Risograph RP 3700 problem (vertical lines on monitor)

[inuit]

Risograph RP3700 monitor.jpg

[20gaugeO/U]

Re: Risograph RP 3700 problem (vertical lines on monitor)

So you have 2 machines available (#1 & #2)? You connected the bad control panel(#1) into another machine(#2) and it worked fine? What happens if you take the control panel from #2 and put it on machine #1?

If that's the case I'd take the front (drum has to be out) and rear covers off the machine and start cutting cable ties around wire harnesses are re-seat connectors going anywhere to the control panel and boards. From the pic it looks like there is info there, just scrambled.

However, I have not experienced this problem.

[inuit]

Re: Risograph RP 3700 problem (vertical lines on monitor)

Hi,
thank you for being so quick!

We got two Risograph machines: an RP 3105EP and an RP 3700 (quite similar models, except the second one use HD black ink..)
The panel doesn't change anything (they're identical and both seem work well).
The cust. service guy said could be a prob. with the logic board.
Maybe we have to open the rear cover and unplug all the cables (There are hundreds!).
I also think that the display is trying to show an error message (The start button becomes red, as everytime there's an error code)...but we can't see what's written.
If someone knows about this problem..or what wires we have to unplug n clean, please let us know.
Thank you again for replying,


Marco

[Iowatech]

Re: Risograph RP 3700 problem (vertical lines on monitor)

Hi,
thank you for being so quick!

We got two Risograph machines: an RP 3105EP and an RP 3700 (quite similar models, except the second one use HD black ink..)
The panel doesn't change anything (they're identical and both seem work well).
The cust. service guy said could be a prob. with the logic board.
Maybe we have to open the rear cover and unplug all the cables (There are hundreds!).
I also think that the display is trying to show an error message (The start button becomes red, as everytime there's an error code)...but we can't see what's written.
If someone knows about this problem..or what wires we have to unplug n clean, please let us know.
Thank you again for replying,


Marco

Hopefully you haven't started changing boards yet, You really should try 20gaugeO/U"s suggestion first. Sometimes the cable ties make the wiring harnesses too tight, which causes slight disconnections. I'm not sure which ones to do in your case, but I'd start with the wiring harnesses that connect to the upper left hand side of the large board in the back.
Something easier that you might try first: reset the working memory on the machine. It has been discussed in this duplicator thread many times, so the information should be easy to find (I'm kind of in a hurry at the moment or I'd tell you myself).

[inuit]

Re: Risograph RP 3700 problem (vertical lines on monitor)

Hopefully you haven't started changing boards yet, You really should try 20gaugeO/U"s suggestion first. Sometimes the cable ties make the wiring harnesses too tight, which causes slight disconnections. I'm not sure which ones to do in your case, but I'd start with the wiring harnesses that connect to the upper left hand side of the large board in the back.
Something easier that you might try first: reset the working memory on the machine. It has been discussed in this duplicator thread many times, so the information should be easy to find (I'm kind of in a hurry at the moment or I'd tell you myself).

Thank you for answer.
I'm trying to do my best for plug/unplug every cable I see in the back of the Riso. It's not easy anyway.
For completely resetting the machine I know I have to take off the flat round battery insered in black plastic ring. Tell me if I'm wrong.
I'm not a technician I start learning how to disassemble/clean drums few months ago...now I have to manage cables and logic boards.
If someone know about this problem or know what cable is connected to the front pannel please tell me.
Every help would be greatly appreciated.
Best,


Marco

Risograph back.jpg

[RRodgers]

Re: Risograph RP 3700 problem (vertical lines on monitor)

Thank you for answer.
I'm trying to do my best for plug/unplug every cable I see in the back of the Riso. It's not easy anyway.
For completely resetting the machine I know I have to take off the flat round battery insered in black plastic ring. Tell me if I'm wrong.
I'm not a technician I start learning how to disassemble/clean drums few months ago...now I have to manage cables and logic boards.
If someone know about this problem or know what cable is connected to the front pannel please tell me.
Every help would be greatly appreciated.
Best,


Marco

[ATTACH=CONFIG]20621[/ATTACH]

First things first, PLEASE MAKE SURE YOU DO THIS WITH THE POWER CABLE UNPLUGGED!!! Second, the board on the far left is the power supply board, I really don't think you need to mess with any of those connections as your Riso does fire up so we can be pretty sure the power supply is working. The area I would focus on is upper right, forgive me it's been a while since I've cracked open a Riso and have my hands in one but I believe the two other boards will swing out if you remove a couple of screws, which in turn will make the upper right a pivot point. Check to be sure that non of the wires in there are shorting out to the frame. If there isn't a plastic protector inserted in the hole that the wires come threw then get some electrical tape and mask off the hole.

HTH and GL
Let us know how it goes.

[inuit]

Re: Risograph RP 3700 problem (vertical lines on monitor)

First things first, PLEASE MAKE SURE YOU DO THIS WITH THE POWER CABLE UNPLUGGED!!! Second, the board on the far left is the power supply board, I really don't think you need to mess with any of those connections as your Riso does fire up so we can be pretty sure the power supply is working. The area I would focus on is upper right, forgive me it's been a while since I've cracked open a Riso and have my hands in one but I believe the two other boards will swing out if you remove a couple of screws, which in turn will make the upper right a pivot point. Check to be sure that non of the wires in there are shorting out to the frame. If there isn't a plastic protector inserted in the hole that the wires come threw then get some electrical tape and mask off the hole.

HTH and GL
Let us know how it goes.

Hi,

I keep trying but no way: I unplugged every cable, checked the wires which connect the keyboard to the logic board. Everythings seems allright (but the display keeps showing lines and numbers have no-sense "3333").
I talked with other technicians but no one saw this kind of problem.
Would be great to find some places outside Italy selling spare parts of old Risograph cause here it's nearly impossible.
Please, let me know if you have ideas, advice, contacts.
Best,


Marco

[Iowatech]

Re: Risograph RP 3700 problem (vertical lines on monitor)

(If you've already tried checking these, sorry.) Might be time to check the condition of the control panel, and see if the unit has proper ground.
Kind of an off the wall thing, is the outlet the Riso plugged into providing proper voltage? I know very little about European electrical outlets, but I do know the machine requires a specific voltage between each of the prongs of its power plug. And bad voltage can cause the machine to operate in surprisingly wrong ways.
Another off the wall thing, and sorry for not asking about this earlier, does the display look like that from the moment you turn the machine on, or does it get that way after a few moments?

[inuit]

Re: Risograph RP 3700 problem (vertical lines on monitor)

(If you've already tried checking these, sorry.) Might be time to check the condition of the control panel, and see if the unit has proper ground.
Kind of an off the wall thing, is the outlet the Riso plugged into providing proper voltage? I know very little about European electrical outlets, but I do know the machine requires a specific voltage between each of the prongs of its power plug. And bad voltage can cause the machine to operate in surprisingly wrong ways.
Another off the wall thing, and sorry for not asking about this earlier, does the display look like that from the moment you turn the machine on, or does it get that way after a few moments?

Thank you all guys for your help.
The Riso is plugged to a common home outlet (the machine worked properly until last month).
I removed the black plastic plug of the Risograph, unscrew and screwed again the ground wire.
I attach a couple of photos in wich you can see there are some flashing leds on the logic board. Is that normal?

Riso led 2.jpg

[RRodgers]

Re: Risograph RP 3700 problem (vertical lines on monitor)

You have a bad display me thinks. Maybe try to flash it... but I'd be willing to bet it's a bad display.

[inuit]

Re: Risograph RP 3700 problem (vertical lines on monitor)

You have a bad display me thinks. Maybe try to flash it... but I'd be willing to bet it's a bad display.

Thank Rrogers and everyone who replied.
I'm back to this forum..but sadly no good news: I've spent last weeks trying to disassemble every part of the Riso back panel (except for the power supply board).
No results.
I tried the monitor panel on another machine and on RP 3105 it works..so I can presume it's not a bad display.
I obtained the technical manual of RP series but every problem is connected to a CODE that the machine show on the display!!
Riso PBC Comp 01.jpgRiso PBC Comp 02 .jpg
If I'm not wrong there is written that some of the boards are the same in all models. Right?
So I could try to change the boards of the monitor panel (CTRL, MIKEY, SKEY) or the PCB SH taking parts from another model (the RP3700 it's damn hard to find here in Italy!) without damaging the machine?
Every help, idea, advice would be greatly appreciated

Marco

[inuit]

Re: Risograph RP 3700 problem (vertical lines on monitor) SOLVED!

Hey guys,

just want to let you know that I solved the problem!!!
It took months of searching, asking, working, disassembling, but finally one of my Riso RP 3700 is working again!
For others who may have the same problem (vertical lines on the monitor) well..it was the main logic board.
The difficult part was finding a board compatible: I discovered that during the manufacturing cycle of the RP 3700 they changed only the LOGIC BOARD. So I got to find another RP700 compatible with mine (SH-PCB - manufactured in Japan - became S3H-PCB - manufactured in China-).
Surprisingly a newer RP3105 had the same logic of mine RP3700.
That's all.

Thank you so much everyone who answered me.
Best,



M.