Sony HCD-DX155 Service Manual page 7

Fix the capacitors with adhesive agent as follows
Fixing the capacitors with adhesive agent is required by the safety regulation.
Be sure to fix the capacitors with adhesive agent when part or circuit board is replaced.
POWER BOARD
Precaution on the connector processing of the POWER board.
When processing the connectors of the POWER board, be sure to refer to section "3-8. POWER BOARD" (page 16).
PRECAUTION WHEN INSTALLING A NEW OP UNIT /
PRECAUTION BEFORE UNSOLDERING THE STATIC ELECTRICITY
PREVENTION SOLDER BRIDGE
When installing a new OP unit, be sure to connect the flexible
printed circuit board first of all before removing the static electricity
prevention solder bridge by unsoldering. Remove the static electricity
prevention solder bridge by unsoldering after the flexible printed
circuit board has already been connected.
(Do not remove nor unsolder the solder bridge
as long as the OP unit is kept standalone.)
HCD-DX155/DX255
7