7
Trouble Shooting
A
All Function No Working
B
All Function No Sound
C
AUX IN No Sound
D
Bluetooth No Sound
F
USB No Function
G
HDMI IN Function No Sound
E
Optical In No Sound
BDU REPAIR CHART
A
All Function No Working
Check system all cable
is loose or bad INT
Re-insert and
fix the cable
yes
No
No
Check connector CN7005
yes
Check display PCB
LD3000 and Conjoint part
B
All Function No Sound
Check AMP PCB C7040
whether +19.5V
Check Q7004 and
Conjoint
No
Part
yes
Check IC1021 and IC1020
No
yes
Check MAIN PCB
IC1021 (+1.8V)
IC1020 (+3.3V)
Check MAIN PCB IC1011
IC1008 and their conjoint
part whether OK
Check MAIN PCB C1256
whether
Check IC1023
No
Conjoint Part
+5V
yes
No
Instead same part
C
AUX IN No Sound
yes
Check Signal Source
output whether OK
No
Instead Signal Source
yes
Check IC1002 IC1003 PIN3
input signal whether OK
No
Check JK1000 and
conjoint part
yesCheck MAIN PCB BT001
Pin15 Signal output
Whether OK
No
Check MAIN PCB IC1011
and their conjoint
part Whether OK
Check MAIN PCB IC1019
yes
Check IC1019 and
their conjoint part
No
Check MAIN BT001 and
their conjoint part
E
Optical In No Sound
Check IC1011 Pin48
input signal whether OK
No
Check JK1001 Pin1 +3.3V and
IC1011 Pin48 conjoint part
yes
Check IC1011and
conjoint part
F
USB No Function
Check MAIN PCB IC1017
No
Check IC1017
and their conjoint part
PIN5 Whether +5V
G
HDMI IN Function No Sound
Check IC6000 Pin40,41,42,44,45
signal whether OK
No
46,47,49,50,52 Data and CLK
Check IC6000 and
their conjoint part
yes
No
Check CN6001/CN1011
and their conjoint part
CLK signal whether OK
Check IC1008 Pin23,24,26,27,
29,30, IC1012 Pin1 Data and
yes
Check IC1008 and
their conjoint part
yes
Check IC1011 Pin13/14/15/16
input signal whether OK
D
Bluetooth No Sound
yes
Check BT001 Pin3 Pin4
signal whether OK
H
685563. No Sound
I
Battery no Voltage
J
685563. Micro USB No
Charge
H
Wireless surround No Sound
whether OK
yes
No
Check and instead battery
Check C8089 +9V~+15V
whether OK
yes
Check IC8004 and
their conjoint part whether Ok
No
Check CN8008 PIN1 +3.3V
whether OK
yes
Check Q8012 their
conjoint part
NO
Check IC8010
their conjoint part
Check IC8002 pin6 pin7 and
signal whether OK
and connector
J
VCC 19.5V whether OK
685563. Micro USB No Charge
Check PSU
Conjoint Part
Check AMP PCB Q7006-C
No
+5V whether ok
whether 0V~0.5V
check CN8005 pin1
Check Q7006 and Q1023
check Micro Jack
No
and CN8007
Conjoint Part
their conjoint part whether ok
yes
check IC8006 and
yes
No
No
Check IC1002 IC1003 and
conjoint part
Instead Same part
yes
Check IC1011 and
conjoint part
3.9V whether OK
No
Check IC1018
and their conjoint part
yes
Check BT001
and their conjoint part
Check C8105 +9V~+15V
yes
NO
instead IC8004 and
their conjoint part
Check IC8014 and
their conjoint part
Check IC8002
their
yes
No
conjoint part whether OK
Check IC8001 RX module
their conjoint part
instead IC8002 and
their conjint part
No
yes
I
Battery no Voltage
685563. dock to main
set
Check CN8001 Pin1
+19.5V
and their conjoint part
check main set Q7000 Q7001
No
yes
whether +5V
check C8078
Check IC8005
No
yes
whether ok
check battery
and their conjoint part
conjoint part whether OK
check IC8006 and their
yes
Check and instead IC8006
No
and their conjoint part
yes
whether ok
check battery
K
Power Supply No working
(Main unit)
M
Subwoofer No sound
+35V whether ok
check CN5002 pin6 7 8
check PSU
No
yes
whether +3.3V
check C5066
and their conjoint part
No check Q5002
yes
/24/26 signal whether OK
check CN5000 Pin3 /22
and their conjoint part
No check RX module
yes
and their conjoint part
check IC5000 and
K
Power Supply
No working
All Voltage
No Output
Check F901
Bad Cause Damage
Check 19.5V
Working or Not
yes
yes
No
Check Repair IC903 IC904
Q901 D918 And their
conjoint part
Check F901
No
yes
L
Subwoofer No sound
M
Power Supply No working
(Subwoofer)
L
Power Supply
No working
All Voltage
No Output
Check F901
Bad Cause Damage
Check BK5V
Working or Not
+33V Voltage
No Output
Check Repair IC901 IC902 IC903
And Its conn circuit
Check Q905 IC904 IC905 IC906
And Its Conjoint Part
yes
No
No
No