Philips MX3900D Service Manual page 8

Dismantling the Mono FE and BE boards
1) Loosen 2 screws and 2 catches to remove the Mono BE
board (pos 1103-B).
2) Loosen 2 screws and 2 catches to remove the Mono FE
board (pos 1103-C).
Dismantling the Supply & Power Amplifier boards
1) Loosen 2 screws B mounting the Supply board's (pos
1102-B) heatsink to the Bottom Plate (pos 227) as per
figure 7.
Note: During re-assembly care must be taken to
ensure the Mains Transformer wires to the
Supply board is routed properly below the
board.
2) Loosen 4 screws C to dismantle the Power Amplifier
board (pos 1102-D) from the Bottom Plate as per figure
7.
Figure 7
2-2
Service positions
Service position A (Top cover removed)
Service position B (Front Panel loosen)
2-2