A Cheertek CT901A/CT908 reference circuit is available here:

http://www.users.on.net/~fzabkar/DVD/Cheertek/CT901A_CT908_SCH_V1 ... M5868S.pdf

http://preview.tinyurl.com/669mjm

Region change procedure:
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Setup, Vol+, Vol-, Vol+, Vol-
use left or right arrows to select region
display shows "255" for multi-region

up/down arrows give options of 3001 and 6001, and each of these in turn have two left/right arrow options, 3001/3000, 6001/6000