2.6 Fault flow chart
Fault symptom:
- No function of the PCB7, NTC
Possible cause:
- PCB7, NTC
- Cable W4
- Module 999, Amplifier
Is the loudspeaker in
protection mode?
Visual confirm cable
connection between
Module 999, Amplifier
and PCB7, NTC
Reconnect/replace
cable
Replace PCB7, NTC
Replace Module 999,
Amplifier
To confirm correct operation of the NTC, measure
approx. 9.35V DC at normal room temperature, as
shown in fig
(When the temperature is rising, the DC voltage is
going towards 0)
Note:
When the loudspeaker goes into protection mode,
it is nescessarry to disconnect mains and wait one
minute before connecting it again.
Fault symptom:
- No function of S and S2
Possible cause:
- Module 999, Amplifier
Is there no function of
switch S and/or S2?
Replace Module 999,
Amplifier
No
Yes
Fig
Red
Black
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 ...