MDS-SD1 - Sony Audio Service Manual (repair manual). Page 10

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• When cleaning the objective lens of the optical pickup, move the mechanism deck using the following method.

1 If a disc is inside, eject it out.
2 Disconnect the power cord from the outlet, and set the non-conducted state.
3 Using a pair of tweezers, while pulling the claw at A towards B, move part C in direction D.
4 Move part C to a position which allows it to be cleaned easily, and clean.

A

C

B

D

Objective lens of 
optical pick-up

• The fluorescent indicator tube will not display anything if the mechanism deck is not connected to the MAIN board.

Before servicing, check the connection of the cables connecting these parts first.