Dismantling Instructions - Philips MX3900D Service Manual

DISMANTLING INSTRUCTIONS

Dismantling of the Front Panel assembly
1) Loosen the 9 screws to dismantle the Top Cover (pos
252)
- 2 screws on each side
- 5 screws on the Rear Panel (pos 251).
C1
A
C1
A
Hints for re-assembly of Top Cover
Due to appearance design the Top cover (pos 252) is
sandwiched between the Front panel (pos 101) and the 2
side covers (pos 102 & 103), this make it necessary to
remove the 2 side covers before re-assembly of Top cover.
2-1
2) Loosen 5 screws A and 8 catches C1 to slide the Front
Panel assembly (pos 101, 102, 103, etc) as per figure 1.
Note: To remove the Source / Volume control pc
board (pos 1105B) 2 nuts hidden below the
control knob assembly (pos 133, 134 and 135)
must first be removed.
A
C1
C1 C1
C1 C1
Figure 1
1) To remove the side cover use a small screw driver with
marking 16mm from the tip end.
2) Insert the screw driver into slot (as shown in figure 2) and
push the tip outwards to release the side cover catch.
The side cover can be pull outwards as soon as the top
catch is released.
Figure 2
Dismantling the Tuner, Mains and AV boards
1) Loosen 3 screws D and 2 catches C2 on the Rear panel
(pos 251) to remove the Tuner board assemby (pos 1101)
as pe figure 3.
2) Loosen 1 screws E and 2 catches C3 to unslot the Mains
board (pos 1102-A) out of the Rear panel as per figure 4.
3) Loosen bracket (pos 254) by turning a catch, sliding
towards the outside and lifting it upwards as per figure 5.
A
C1
A
Figure 4
Dismantling the 5DTC Module
1) Loosen 1 screws E and 2 catches C3 to remove the
Mains board as per figure 4.
2) Loosen bracket (pos 254) by turning a catch, sliding
towards the outside and lifting it upwards as per figure 5.
3) Loosen 3 screws G, lift up the 5DTC Module's (pos 1103-
A) rear and pull the module out towards the rear as per
figure 6.
2-1
4) Loosen 7 screws F and 2 C5 to separate Rear Plate
assembly (pos 251 + 227) from the Bottom plate as per
figure 3.
5) Uncatch C4 to remove the AV board (pos 1104) from the
Bottom & Rear Plate assembly (pos 251 + 227) as per
figure 5.
Figure 3
2
1
Turn up the lever,
slide the bracket
C4
as shown and lift
out of the bottom
chassis.
Figure 5
G
Figure 6
G