2.0 Fault flow chart
Fault symptom:
- The front glass slides to the top
without stopping above the
keyboard
Possible causes:
- PCB8, Tacho
Connection to PCB8,
Tacho
OK?
Re-establish
connection
Change PCB8, Tacho
OK?
Replace PCB2, Master
Replace motor unit
Fault symptom:
- Unable to load CD
- Front glass does not open
- Front glass slides down a little and
nothing else happens
Possible causes:
- PCB2, Switch
- PCB2, Master
Check if the magnet
on the door
mechanism is
mounted
See figure page 2.
Measure connection
to PCB8, Tacho &
PCB2, Switch
Door mechanism must
be in lower position
Measure 3.3V PCB2
P pin2
Change PCB2, Master
Change PCB2, Switch
Fault symptom:
- No sound in loudspeaker and/or
headphone
- Radio/DAB OK
- CD OK
Possible causes:
- PCB2, Master
- PCB, Socket
Measure voltages
OK?
Change PCB6, SMPS
Change PCB2, Master
Change PCB, Socket
No
Yes
ABO-CENTER
v/HENRIKSENS
ELEKTRONIK
Содержание BeoSound 4 2851
Страница 19: ...Fault flow chart 2 11 Placement of magnet A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...
Страница 20: ...2 12 A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...
Страница 21: ...Service Mode 3 Not completed A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...
Страница 22: ...3 Service Mode Not completed A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...
Страница 54: ...5 30 A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...
Страница 58: ...6 A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...
Страница 69: ...A B O C E N T E R v H E N R I K S E N S E L E K T R O N I K ...