Fault flow chart 3.3
Fault symptom:
No red LED in BS5
No function in BS5
Possible causes:
Defective PCB01,
Mainboard
Defective PCB13, Input
Defective PCB61,
Backlight Inverter
Defective BM5
Confirm BM5 is
powered on.
Confirm
+5V_SB_AUX,
+12V_AUX
in the power cable*
for BS5 OK?
Confirm
+5V_SB_AUX
+12V_AUX from
BM5 power outlet
(P150)
OK?
Confirm
+12V_BUS on
PCB04, P18 pin 2-3,
+5V_SB on PCB04,
P18 pin 23
OK?
Confirm
+5V_AUX on
PCB13, P4 pin 9,
+12V_AUX on
PCB13, P4 pin 5-8
OK?
Replace defective
PCB13, Input
2
1
4
3
1 GND
2 5V_AUX
3 12V_AUX
4 IR
*BS5 power cable
Replace defective
W12, power cable
for BS5
Follow the fault
flow chart on the
previous page
Replace defective
PCB51, ML-PL
Confirm
+3V3_SB on PCB01,
Mainboard, P10
pin 1
OK?
Remove W23 from
PCB01, Mainboard.
Confirm:
+3V3_SB on PCB01,
Mainboard, P10
pin 1
OK?
Replace defective
PCB01, Mainboard
Replace defective
PCB58, Standby and
reconnect W23
Remove W21 from
PCB01, Mainboard.
Confirm:
+3V3_SB on PCB01,
Mainboard, P10
pin 1
OK?
Replace defective
PCB14, Volume and
reconnect W23,
W21
Remove W20 from
PCB01, Mainboard.
Confirm:
+3V3_SB on PCB01,
Mainboard, P10
pin 1
OK?
Replace defective
PCB12, Navigator
and reconnect
W23, W21, W20
Replace defective
PCB01, Mainboard
and reconnect
W23, W21, W20
P6
P4
P5
P11
P2
P9
P3
P7
P8
P1
P10
Survey of connector placement on PCB01
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 ...