U1 ? <- IC NE555 (7555)
R20 ? <- 1M (1/4W)
R21 ? <- 47R (1/4W)
C11 ? <- 22uF ~ 47uF
D11 ? <- IN4007
DELAY ? <- RELAY: Do not solder the provided relay (OMI-SH-205L) at the moment as there is a problem with the driving circuit, KK will follow up.
You're welcomed. I've finished soldering the PCB but not tested yet. Will go to HiFi Fever now to do some metal works and attend the CD transport test.