Fault flow chart 3.7
Fault symptom:
No display (no Bang &
Olufsen text on DVI-D at
startup)
No HDD activity (fan ok)
Possible causes, defective:
PCB01, Motherboard
PCB04, Power Supply
PCB94, HDD
RAM module
On PCB51, ML-PL
confirm by LED*:
+3V3_ATX
+5V_ATX
OK?
Does ‘USB Good
Link’ blink once
during startup?
*Measuring points
PCB51
GND
+3.3V
+12V
+5V
+5V
Voltage
Confirm 0V on
PCB51, P101 pin 9
OK?
Disconnect W9
from PCB94, HDD
and W12 from
PCB51, P150.
Confirm the before
mentioned voltages
again*. OK?
Reconnect W9 to
PCB94, HDD.
Confirm the before
mentioned voltages
again*.
OK?
Fault in
BeoSound 5.
Please refer to the
next page
Replace defect
PCB94, HDD
Disconnect W5
from PCB51, P101.
Confirm the before
mentioned voltages
again*.
OK?
Replace defect
PCB51, ML-PL
Replace defect
PCB01,
Motherboard
Replace defect
PCB01,
Motherboard
Replace defect
PCB01,
Motherboard
Replace RAM
module
Replace defect
PCB01,
Motherboard
No
Yes
Содержание BeoSound 5
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Страница 82: ...Bang Olufsen DK 7600 Struer Denmark Phone 45 96 84 11 22 Fax 45 97 85 39 11 10 08 ...