HCD-SBT100, HCD-SBT100B, HCD-SBT300W, HCD-SBT300WB - Sony Audio Service Manual (repair manual). Page 6

DISCRIMINATION  OF  NEW/FORMER  TYPES (HCD-SBT100: 
US and Canadian models only)
The mounted parts on the USB and POWER boards have been 
changed in the midway of production.
New/former types can be distinguished by the “Mount” or “No 
mount” of the mounted parts on the POWER board.
Repair and replace after distinguishing new/former types referring 
to the following fi gure.

CHANGE  OF  CN501  ON  THE  MAIN  BOARD
The FLEXIBLE FLAT CABLE (24P) (FFC1) that connects the MAIN board to the optical pick-up block, and the connector (CN501) on the 
MAIN board changed from Au plating to Sn-Cu plating in the midway of production.
When replacing the FLEXIBLE FLAT CABLE (24P) (FFC1) that connects the MAIN board to the optical pick-up block, or the connector 
(CN501) on the MAIN board, make sure to check which part is to be replaced before replacing it referring to the following fi gure.

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