Calcomp 5336 inkjet plotter where to get parts or an old machine

Bonjour,

I have this old large inkjet printer, and it recently failed. I need some spare part or a similar printer which is not used to test with other parts.
I have a limited budget, I am working from home and cannot put a lot o f money in fancy new machines.
A service manual or the electronic schematics could help although this is difficult to replace FPGA.
I suspect the electronic card installed on the carriage to fail after installing a defective printer head bought recently on EBAY.
the machine is locked on the initialisation sequence and stops there, and do not display other error messages.
Before I test with the print head it was moving but not printing and displaying the error message " install print head" although a print head was in the machine.

I was using an old desktop under WIN98


Thanks in advance for tips and informations

JP Caytan