Sony HCD-FL3 Service Manual page 121

New/former type of the FRONT REAR AMP/TRANS boards are discriminated by difference of the pattern of the FRONT REAR AMP
board.
– FRONT REAR AMP BOARD (Conductor Side) –
Former type
1
O
TRANS
BOARD
6
CN915
#
4
1
New type
4
1
O
TRANS
BOARD
6
CN915
E2, E51,
#
MX, AR
1
HCD-FL3
5