Bang & Olufsen BeoPlay V1-40, Service Manual

Page: 24 / 74

3.8 Fault flow chart
No
Yes
Fault symptom:
Room Awareness does not work
Possible causes:
PCB58, IR Receiver & Room Aware.
PCB01, Video engine
Replace PCB58,
IR Receiver & Room
Awareness or
PCB01, Video
Engine
Replace PCB58,
IR Receiver & Room
Awareness or
PCB01, Video
Engine
Check in the
MENU
>
SETUP
>
PICTURE
>
ADVANCED SETTINGS >
ROOM ADAPTATIONS = ON
Short-circuit on PCB01, P4210 pin 1 and pin 2.
Check that the light intensy changes after
approx. 10 to 15 sec. while you alternately
1) hold a hand over the IR-field
2) illuminating the IR-field.
OK?
Room Awareness is
OK
Confirm voltage on
PCB01, P123 pin 1,
LCD_CTRL_PWM
= 0 V
OK?
Temporarily replace
PCB58,
with new PCB58, IR
Receiver & Room
Awareness
OK?
Replace PCB01,
Video Engine
Install PCB58,
Receiver & Room
Awareness
permanently
Hint:
Measurement plugs,
pins and test points;
see page 3.17