Yet another service manual (with detailed schematic diagrams) for Firenze-based 2011 player:
http://elektrotanya.com/samsung_ht-d450 ... nload.html.
This one with Sanyo standby/front micom (5V VCC !!!).
On page 40 there is a procedure for "Buyer-Region Code Setting Method" described; it's not clear to me if it does apply for changing player region (???), DVD region, BD region, or perhaps all of the above - ?
Deck/loader adjustment (page 44) RC code 235878 apparently works for other Firenze-based 2011 models too (warning - this is possibly dangerous option). However, it doesn't seem to do anything actually useful for my 2 units with non-working loaders..
Btw, RC code for deck adjustment check/verification given it this particular manual is incorrect; I think it should be: 235879.