Mechanical/Electrical Dismantling; Pcb34 Microcomputer And Power Supply; Pcb35 Motor Control; Pcb41 Cd - Bang & Olufsen BeoSound 9000 MKIII Service Manual

6.4 Dismantling and assembly, English

PCB34 Microcomputer and Power Supply

PCB35 Motor control

PCB37 Lid Motor

PCB41 CD

MECHANICAL/ELECTRICAL DISMANTLING

1. Glass lid
Fig. 1
- Carry out points 1 to 5.
- Remove 35P53, power supply for sledge motor.
- Remove the plastic screen over the fl ex cables from the sledge.
- Lift up PCB34 and PCB35 simultaneously - watch out for the fl ex cables. Lift up
PCB34 and PCB35 at the rear edge of the product.
- When carrying out service, lift up PCB34 and PCB35 and place them against the
rear edge of the chassis. Make sure that the wire is able to run.
- The connection between 9P78 and 35P52 can be re-established by means of the
cable supplied in the plastic pocket at the very back of the service guide.
- When returning PCB34 and PCB35 to their places, make sure that no leads get
jammed.
- See PCB34.
- Carry out point 13.
- Unsolder the leads for the motor.
- Remove three screws on the fl ange with the motor.
- Carry out points 1 to 8.
- Remove 35P53, power supply for sledge motor.
- Remove the two screws for the cover for the CD PCB.
- Remove the two screws that hold PCB41, CD, and tilt PCB41 over to the side.
- Make sure that the ribbon cables do not get into contact with the CD.
- Push the sledge into position.
- Open the glass lid. The lid can be forced up if necessary.
- Disconnect the mains voltage.
- First loosen the screw on the left-hand side (approx. 3 turns).
- Hold the left-hand side of the glass while loosening the screw on the right-hand
side.
- Lift off the glass.
- Tighten the screws again, otherwise the screws will damage the top plate when
the lid function is activated.
- WHEN THE GLASS LID HAS BEEN REMOVED THE SLEDGE IS ONLY ABLE TO RUN
WHEN THE LID HINGES ARE IN THE OPEN POSITION. (SEE TEST MODE 74, IF
REQUIRED).
- Check fi nger protection after assembly.