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Never put original Roland disks into a Windows computer. Diskettes are formatted differently and have hardware copy protection. If a disk fails the check, it can only be repaired with a specially written program, or a new one can be purchased from Roland. Any attempt to restore it with DOS or...

There is no easy way. You can use grease pump on the inlet. You have to disconnect all the outlets first. Then you have to clean all the pipes. If one is clogged, the process stops. Then use grease ELKALUB, GLL7/N2. It doesn't dry out.

First change relay board (slot 2) end input board (slot 3) Motherboard or backboard is behind these 2 boards

This is wrong. Defective relay board (slot 2) or input board (slot 3). It is possible that the motherboard is defective, but I have never seen such a defective one before.

Take a picture of this area.

New installation or working machine? 90% it's new installation.

The language is not in the hand terminal. It is written in the EPROM on the unit processor board. The machine is very old. To make it English, you need to change the EPROM's on the processor board's to a newer version. They are freely copied.

Transforming a conventional system into a Roland matic requires changes in design and control. The type of rubber is the least of your problems.

Here is the Roland section. Not "any". Your roller diagram is for "any" machine but not for a Roland.

This means: alcohol, pH, or water hardness. Or the temperature.

Use isopropyl alcohol. Adjust the rollers.

The two inverters are connected in series. If there is a problem before them, both will not work. Check the communication cables. It is possible that they have lost addresses. The easiest way to check is with Downloader. It is normally installed on the central console. You must log in as...

Year of manufacture or series of the machine. Take a screenshot of the errors or error numbers. If the problem is Lust, they should be replaced or repaired, if still possible. If they are given for repair in time, there is no problem with the repair. If the machine is restarted for a long time...

You have a damaged sensor on one of the covers.

You have removed boards from a process with the power on. You need to find what is damaged. It won't work by writing in a forum. My opinion. The machine has old software. The entire process needs to work. You can't just turn off the PU from the central console.

Turn off the ink ductor on 1st PU. Then PU2 You have a problem with the inverter or motor. I already wrote to you by mail. PU1 or PU2

No problem. Like this.

Every R500 has at least 2 incremental sensors. One is on the main motor, the other on the 1PU. I wrote you where both are connected. The main motor sensor is connected to X7 on A386 on the main motor inverter, bridged to slot 2 A358 The sensor on the machine, that you are having trouble with, is...

Capture the entire screen with errors, not half. The card can be repaired and tested within 1-3 days. You are close. The incremental sensor of the main motor is connected to the UVR A358 slot 5. The incremental sensor for the position of the machine: PU1 A350, slot 2 Call.

I've done it. You won't like the machine's downtime. If you can't find anyone to repair it in the area, buy from Roland (with assembly included). You can't assemble it yourself.