paint feed adjustment problem heidelberg 102fp cpc 1.02

Hello, dear forum members. This is my first post, plus I'm still a newbie in this business. The problem was in the paint supply adjustment. A problematic twelve-volt power supply was found in the cpc 1.02 control panel. The paint supply began to be adjusted. But when adjusting on the first and second printing blocks, there are only five of them, the adjustment is carried out in jerks and the adjustment indicators flicker as if vibrating. On the other three printing blocks, the adjustment is normal
Maybe someone has encountered such a malfunction? I am interested in the basic electrical circuit diagrams for the cpc 1.02 control panel. Where can I get them? Can anyone share them with me? Thanks in advance to everyone

 

My first thought is that the flexible connector cable under the operator side cover has badly deteriorated, causing intermittent shorting of the circuit path. Unless I am not understanding your post, is this a problem with ink sweep adjustment or is it the ink fountain servo motors?

 

As they say, I'm just learning. There is no documentation for this machine. The littel motor is located at the top of the printing sector, next to the motor is a potentiometer.
when you select on the remote control, for adjusting the paint, let's say the first and second sections. what happens, it's hard for me to explain, some kind of chaos, the numbers displaying the adjustment, chaotically change, while the adjustment occurs slowly in jerks.
when you select the other three sections for adjustment. no problems, everything is fine. the chaotic numbers do not change and the adjustment is smooth and faster

 

Like I said, remove the top portion of operator side cover (this machine is 1988 or older, I presume) and examine the spiral cable which electrically is connecting the sweep servo motor and the junction box. You may also try swapping MOT boards to see if problem moves.

 

This is the printing section. And the hero of the occasion turned out to be this board. We will repair it on Saturday

 

I’d humbly suggest you be sure to check the cable I’d mentioned, as the insulation of the wires tends to break down, causing the short circuit, which in turn may cause the board to fail.

 

Dear junker1984, I am very grateful to you for your advice. The thing is that I have just started to study this machine. The terminology is difficult to translate into my language. The service personnel did not understand either. Where is this servomotor located. I will definitely find out where it is, in the process of work

 

due to the lack of technical documentation, I do not know what this board is called. but upon visual inspection, there is a swollen capacitor in the secondary power supply circuits. most likely, the secondary voltage is not filtered. it is kind of humming
I think that's why the paint supply adjustments occur in pulses and the numbers displaying the information dance

 

I'll make a video on this problem and try to post it

 

experience with unfamiliar devices I have. but it is always desirable to have a description, circuit diagrams. I ask again where can I get circuit diagrams electrical on CPC 1.02

 

You must remove the operator side cover, I see your machine is a bit older than I thought, the complete cover must be removed. There you will find the coiled cord I speak of, towards the top of the inker.

 

do you mean Central Control? is this picture also from the control panel? i have not seen anything like that there, probably another version. as was said above, the repair will continue on saturday. i will take detailed pictures of the control panel.

 

This is picture of CPC card layout.

 

the board that I highlighted in red is the one that is acting up

 

please tell me is it really possible to find a basic electrical circuit diagram for this power supply

 

Of course, it is possible to repair without documentation, without electrical circuit diagrams for a specific model, using datasheets, but as often happens, the factory circuit diagram for connecting microcircuits differs significantly from the datasheets.

 

From my experience, I would safely assume you will not be able to find a diagram for any proprietary Heidelberg cards. They have never been available to even authorized technicians.