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2-4. Notes on Service
D12, D13, Q3, Q101 (PS-543 board) : Mount the part so as to be perpendicular to the board surface. Cover Q3 and Q101 with the AC heat conductive sheet. Refer to Section 2-10-2 �Removing/Installing the PS-543/544 Boards� for details. n If the sheet has breaks or cracks, be sure to replace it with a new one. AC heat conductive sheet : Sony P/N 3-615-731-0X Installing AC heat conductive sheet (1) Fold the AC heat conductive sheet into half. Fit the two projections on the AC shield chassis into the holes on the AC heat conductive sheet. (2) Affix the AC insulating sheet to the AC shield chassis with a new double-sided tape.
AC heat conductive sheet Double-sided tape
AC insulating sheet
AC shielding chassis Projections
F1 (PS-543 board) : Cut the vinyl tube (ø7.3 mm) to the specified length and cover F1 with it before mounting. Vinyl tube : Sony P/N 7-635-003-19
F1 23 ±2 mm Vinyl tube
R7 (PS-543 board) : Cut the leads of R7 as shown in the figure before mounting.
R7
Cut
Cut
Cutting leads : Cut the leads of mounted parts protruding from the B side of the board to the specified length. PS-543 board : 2.5 mm or less PS-544 board : 1 mm or less
