M300 Pcq problem

Dear sir
Referring to our machine Goss M300 machine Nr. 842-1992 type D0178
I have problem with Pcq control system. When turning the machine on
We found that all register and ink Motors on all printing units doesn't read on the screen, so that we cannot control registers and ink Motors in all printing units.
The pcq give us the following message
"FAULT INITALIZATION bubble memory do you want to reinitalize, yes no"
Could you please help me to overcome Pcq problem?

 

Hi sir:

1) Perform a visual inspection : look for loose and broken wires, improperly seated connectors, loose or broken wires
missing switch, missing jumpers. and so on.
Chech for obviously damaged component(components burned or discolore due to overheating);
Dust + dirt + tear +wear

2) Reseating Boards and components:
Edge connectors are a common source of problems. Power down the system and remove the PC boards. Examine the edge connector
for contamination and clean with contacts cleaner contacts. Reseat any loose components such as scoketed ICs) . Reseat the
boards and power up.

3) Power supply checks:
Check the power supply for missing voltages and voltages out of spec. A digital multimieter DMM can be necessary, as
voltage specifications are quite tight: logic supplies for example: must be within + 5% percent of 5Vdc. All the
multiple supplies and all must be checked.

4) Board swapping:
Board swapping involves the substitutiono of a known godd board for a suspect one.


5) Clock for CPU:
Check the frecuency with frequency counter or a DMM included frecuency counter( like Fluke DMM)


6)Reset CPU:
reset cpu see the attached schematic.

7) Components ; Rusting+Dry+Colder joint solders

8)Cables; Corroded+Broken

9)
Finally the most important tool or instrument a service technician can have is his/her senses:
1) Sight
2)Smell
3)Touch
4)Hearing

Merry Christmas

 

Thanks for your reply
Firstly we found problem with card
And we changed with new one
And we found - +15v DC power supply problem and changed with new one
We cleaned all the computer case cards and checked the flat cable connector s
We need to know how to reset or initialize bubble memory the pcq

 

Great that you find 2 problems.

We need to know how to reset or initialize bubble memory the pcq ?

Attached is there again the schematic how to Reset the CPU, you can Not Reset the memory, since the CPu control the memory, attached is there some schematic that i did, for idea how work the CPU+memory. o.k?

 

Thanks for your reply
I don't know which electronic card containing the cpu

 

MOBO= Motherboard

Blessing

 

Thanks for your reply
Do you have the schematic for this pcq
I don't have schematic know
You are certain That card called MOBO in the catalog

 

No i do not have

You must call to the dealer

Blessing

 

Thanks for your reply
I do not have a dealer
The catalog in my work
Are you working at this pcq before

 

yes I did sir,

Now am Older man, retired.

Regards

 

Thanks for your
I changed defective PCB card by new one but I can't find MOBO card
There is only processor card

 

Processor board = is MOBO

Merry Christmas

 

Thanks for your reply
The card called
EFISYSTEME CMC16
Sn 972431
Which Ic is the cpu in the attached picture
Which ic is the rom

 

Hi sir:
The IC ROM, is NOT the CPU.

I believe is the big IC readomg: MEMTECHNS

Happy New Year.