JBL JBLPARTYBOX100AM, Service Manual, Page: 9 / 45

Party Box 100 REPAIR CHART
A
All Function No
B
All Function No Sound
c
AUX IN No Sound
D
Bluetooth No Sound
E
USB No Sound
F
MIC/GT No Sound
G
Power Supply No
H
Battery No Charging
A
All Function No
Check system all cable
and connector is loose
or bad INT
Re-inset and
fix the cable
Check connector CON7
VCC 22.5V whether OK
Check SMPS
yes
yes
No
No
Check Q19 and
Conjoint part
B
All Function No Sound
Check AMP Part EC13
W22V
Check Q19
and Conjoint
part
Check
U15 (5V)
U16 (3.3V)
Check U15
and U16
Conjoint
No
yes
yes
No
Check U10 U11 and
their Conjoint part
C
AUX IN No Sound
Check
R35 (10V)
whether OK
Check IC2
and Conjoint
part
Check
C23 (0V) whether OK
Check C23
Audio
detection
Conjoint
No
yes
yes
No
Check U8 and their
Conjoint part whether
E
USB No Sound
Check IC7 Whether
+5V
Check IC7
and Conjoint
part
Check
U12 PIN12 Whether
+5V
Check U12
and
Conjoint
No
yes
yes
No
Check IC101 and their
Conjoint part whether
G
Power Supply No Working
All Voltage No Output
Check 22.5V
Voltage
whether OK
Check F900 Bad Cause
Damage
No
yes
No
Check IC900 PC900 D1
and their Conjoint part
D
Bluetooth No Sound
Check FB12 Whether
3.3V
Check IC4
and Conjoint
part
Check
RF module whether OK
Check RF
module
Conjoint
No
yes
yes
No
Check IC101 and their
Conjoint part whether
F
MIC/GT No Sound
Check IC2 Whether
+10V
Check IC2
and Conjoint
part
Check
R24 R25 Whether
3.3V
Check Q23
and
Conjoint
No
yes
yes
No
Check IC101 and their
Conjoint part whether
H
Battery No Charging
Check FB11 Whether
3.3V
Check IC4
and Conjoint
part
Check L9 Whether 17V
Check U14
and Conjoint
part
No
yes
yes
No
Check IC101 and their
Conjoint part whether
Trouble Shooting