Whenever I get a new EM pin, I immediately photocopy the instruction manual
and electrical schematics. I put the originals in a safe place and use the
copies for troubleshooting. I can make notes on the copies, trace lines
with highliters, and get them dirty while the originals remain clean. I
also copy the instruction and score cards which I get laminated for backups.
Original EM paperwork is valuable--take care of yours!