where can I find a list of service codes for a D5MXL?
In my experience you will usually find all the codes eventually on the monitor panel. The M series had plenty of issues.
I have the codes off the machine . I need to know they mean?
http://diagramasde.com/diagramas/otros2/Explicacion de codigos.pdf It's an old overall list, but should be sufficient for a D5M.