Fault flow chart 2.5
Fault symtom:
- No sound from midrange, but tweeter and
woofer is OK
Possible cause:
- Midrange
- Module 999, Amplifier
Turn volume on the Audio Master up to 50.
Confirm an AC-Sound signal by means of the
Bar-graph on the multimeter or an oscilloscope,
when measuring across the midrange input
terminals.
Note:
It wil give the best result if it is possible to
use a audio test CD with pure sine waves
and an oscilloscope, when measuring on
the woofer or midrange
Visual confirm cable
connection between
midrange and Module
999, Amplifier
Reconnect/replace
cable
Remove mains from the
product. Remove the black
wire from the midrange.
Measure the resistance across
the midrange terminals:
Approx 6. ohm?
Replace midrange
Replace Module 999,
Amplifier
Fault symtom:
- No sound from tweeter, but midrange and
woofer is OK
Possible cause:
- Tweeter
- Module 999, Amplifier
Turn volume on the Audio Master up to 50.
Confirm an AC-Sound signal by means of the
Bar-graph on the multimeter or an oscilloscope,
when measuring between PCB, Cross Over
P0 pin and ground.
Visual confirm cable
connection between
tweeter and Module
999, Amplifier
Reconnect/replace
cable
Remove mains from the
product. Remove the connector
on PCB, Cross Over P0.
Measure the resistance
between the orange and white
wire:
Approx 6.6 ohm?
No
Yes
Replace tweeter
Replace Module 999,
Amplifier
Содержание BeoLab 9 6217
Страница 6: ...1 ...
Страница 16: ...3 4 ...
Страница 19: ...4 BeoLab 9 in service position Gently lift off lens Pull off fabric frame ...
Страница 27: ...4 11 Replace midrange 4 2 BeoLab 9 in service position Remove screws Remove cables 4x TX20 ...
Страница 28: ...4 12 Replace woofer 4 2 BeoLab 9 in service position Remove screws Remove cables remember NTC 4x TX20 ...
Страница 29: ...4 13 Replace rubber foot Remove screw Pull off bracket 1x TX10 Pull off rubber foot ...
Страница 30: ...4 14 ...
Страница 32: ...5 ...
Страница 33: ...6 1 Block diagram Block diagram 6 1 6 1 Block diagram Module 999 PCB4 PCB5 ...
Страница 34: ...6 2 6 2 6 2 ...
Страница 39: ......
Страница 40: ...Bang Olufsen DK 7600 Struer Denmark Phone 45 96 84 11 22 Fax 45 97 85 39 11 3538063 02 07 ...