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A
B
NX-U10
1
I PRINTED CIRCUIT BOARDS
MAIN (1) P.C.B.
2
MAIN (6) P.C.B.
(Side A)
+5V
LED
L out
GND
LED
R out
+5V
3
L in
GND
R in
4
BATTERY HOLDER
5
MAIN (5) P.C.B.
(Side A)
6
Safety Measures
•
Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such
as wearing insulating gloves.
•
C58 and C78 on the MAIN (1) P.C.B. are dangerous, for a high voltage is retained there even after the power is turned off.
7
Before the repair work, connect a resistor about 5k-ohm/10W between terminals of the capacitor to force discharge.
After the repair work, also perform force discharge by connecting a resistor about 5k-ohm/10W between terminals of the capacitor.
16
C
D
(Side A)
No replacement part available.
サービス部品供給なし
IC16
52
1
R112
4
1
27
26
CB5
CB2
Lch
GND
Rch
DRIVER
R
L out
GND
R out
L in
MAIN (4) P.C.B.
GND
R in
(Side A)
VOLUME
+ / -
E
F
5 k-ohms
No replacement part available.
10W
サービス部品供給なし
1
C96
8
4
5
R111
5
4
5
1
8
8
IC15
IC7
15
28
8
1
IC2
14
1
5
4
W3
JK1
PORTABLE
安全対策
・ この製品の内部には高電圧部分があり危険です。修理の際は、絶縁性の手袋を使用するなどの安全対策を行ってください。
・ MAIN （1） P.C.B.のC58、およびC78には電源OFF後も高電圧が維持されるため危険です。
修理前に5kΩ/10W程度の抵抗をコンデンサの端子間に接続して強制放電してください。
また、修理後も同様に5kΩ/10W程度の抵抗をコンデンサの端子間に接続して強制放電してください。
G
H
I
MAIN (2) P.C.B.
(Side A)
USB
(miniB)
CB1
CB11
GND
DATA+
5
8
DATA-
IC1
VBUS
4
1
ON
COMMON
OFF
MAIN (3) P.C.B.
CB3
(Side A)
POWER
ON/OFF
DRIVER
L
W2
J
• Semiconductor Location
Ref no. Location
D3
B3
D6
E4
D15
E3
D16
F3
D21
D3
D22
D3
IC1
G3
IC2
G4
IC4
F3
IC5
E4
IC7
E3
IC8
E3
IC9
E3
IC10
D3
IC12
E3
IC15
F3
IC16
C2
Q2
E4
Q3
E4
Q7
E3
Q8
F3
Q13
D4
Q15
G3
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