Sennheiser HMD 46-3, Руководство по обслуживанию

Страница: 8 / 24

HME 46-3, HMD 46-3
02/2008 9/25
4 Assembly
4.1 Assembly of the cap
Reference:
•
see “Exploded view HME 46-3 / HMD 46-3”, page 21.
1. Attach the relevant cap (20 or -25) to the headband (10).
2. Solder the relevant leads of the split headband cable to the PCBs (TP1 to TP4), see “Printed circuit boards”,
page 19 and see “Block diagram”, page 20.
3. Solder the microphone cable (TP5 to TP7) at the microphone arm PCB, see “Printed circuit boards”, page 19
and see “Block diagram”, page 20.
4. Put the center (50) over the resonator (60) and solder the orange and brown leads at the relevant pins
(TP8 and TP9) to the PCB , see “Printed circuit boards”, page 19 and see “Block diagram”, page 20.
5. Install the felt plate (40) on the PCBs (20 of the system module).
6. Turn the center (50) into the cap (20 or -25).
7. Set the capsule with resonator (60) into the cap (20 or -25).
8. Install the screws (70) with a torque of 25 Ncm
±
3 Ncm.
9. Install the label (120) on the cap (-25), if applicable.
10. Install the disc (80) on the resonator (60) if necessary.
11. Install the earpad (90) over the disc (80) on the cap (20 or -25).
4.2 Assembly of the -PTT-x cable
Reference: see “Exploded view cable -PTT-x”, page 25
1. Solder the cables (90, 100) at the PCB (60), see “Wiring diagrams”, page 15 et sqq.
2. Install the PCB (60) with the cables (90, 100) into the housing (10).
3. Close the housing (10) with the cover (30).
4. Install the inserts (50) at the top of the housing (10).
5. Fasten the screws (40) of the housing (10) with a torque of 25 Ncm
±
3 Ncm.
* Only for microphone side.