Fault Flow Chart - Bang & Olufsen beosound 1 2581 Service Manual

2.4 Fault fl ow chart, English
#2 Fault fl ow chart
Please read
#4 Theft protection
System functionality
IR
Keyboard
Display
Standby light
before proceeding.
Try with a new
Replace PCB3
Beo4
OK?
OK?
Replace batteries
or Beo4
Disfunction of Replace either left
both left and or right keyboard
right keyboard set
set? OK?
Replace PCB3 Replace PCB1
OK? OK?
Replace PCB3 Replace PCB1
OK? OK?
Measure 1P5pin10
to pin3. 5V DC?
➢ 2
Measure Measure
3P1pin15 and 1P600pin4 and
3P1pin18 to pin1. 1P600pin1 to
15V DC and 2V pin18. 5V DC and
DC? ➢ 4 2V DC? ➢ 1
Replace 18pin
Replace PCB3 wire from 1P600
OK? to 3P1
OK?
No
Yes
Bring BS1 to
Replace PCB1
workshop for
OK?
repair
Bring BS1 to
workshop for
repair
Bring BS1 to
workshop for
repair
Unplug 1P5 and
measure 2P1pin4 Replace PCB2
to pin12. 5V DC? OK?
➢ 2
Bring BS1 to
Replace PCB1
workshop for
OK?
repair