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A
B
A-U670/A-670/A-U671/NS-BP401/NS-BP301
1
2
MAIN (2)
BASS
3
–
+
4
MAIN (4)
5
A-U670/A-U671
USB DAC indicators
DSD
6
W3B
7
38
C
D
MAIN (1)
(CB302)
MAIN (1)
(CB306)
A-U670/A-U671
(Side A)
TREBLE
BALANCE
–
+
L
R
W1B
CB2
R814
Remotecontrol
sensor
W3A
(Side A)
PCM
VOL_B/VOL_AD
VOL_A/+3.3S
DGND
E
F
A-U670/A-U671
W2A
CB1
USB
LINE
indicator
indicator
PURE DIRECT
indicator
PURE
INPUT
DIRECT
A-U671
A-U670/A-U671
A-U671
MAIN (5)
(Side A)
A-U670/A-670
VOLUME
G
H
I
MAIN (3)
(Side A)
POWER
indicator
DGND
PWR_ON
LED_PWR
+3.3M
MAIN (6)
(Side A)
PHONES
W4
W7
chassis
MAIN (1)
(CB305)
J
(Power)
• Semiconductor Location
Ref no. Location
D4
I3
D7
F4
D8
F4
D9
F4
D10
C6
D11
C6
D12
C6
D13
C6
D14
C6
D15
B6
D16
E6
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