Sony PDW-U4 Service Manual page 95

Professional disc drive unit
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4. Remove the four screws (PSW2 x 5), and then remove the BD-48 board.
PSW2 x 5
(a)
Hole
IC
Pins
Arrangement of FFC (6-core) PP63-SM45
Bending portion of FFC
BD-48 board
(6-core) PP63-SM45
Note
When attaching the BD-48 board, observe the following instructions.
Place the bending portion of FFC (6-core) PP63-SM45 under the BD-48 board as shown in the
figure.
Fit the two pins with the two holes.
Tighten the screws in the following sequence: (a), (b), (c), (d).
A protection sheet is stuck to the BD-48 board (RP) for replacement. Before installing the BD-48
board (RP), be sure to remove the protection sheet. If the radiation sheet is peeled when removing
the protection sheet, stick the radiation sheet again at the position shown in the figure.
5. Install the removed parts by reversing the steps of removal.
Radiation sheet 2 (23 x 23)
(b)
Radiation sheet (PD)
(c)
(d)
IC
Hole
BD-48 board
Position of radiation sheet
The radiation sheet 2 (23 x 23)
should not protrude from the
line of the IC.
Radiation sheet (PD)
Do not overlap the radiation sheet (PD)
with these ICs.
BD-48 board (RP)
Radiation sheet 2 (23 x 23)
Radiation sheet (PD)
Protection sheet
Radiation sheet
2 (23 x 23)
IC
IC
92

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