BLOCK DIAGRAM
FR
O
N
T
U
SB
M
C
K
SPDIF
O
U
T2
I2
S-
2(P
C
M
in
fo
r D
is
tribution
)
USB_Tx_Rx
SPDIF OPT IN
ANALOG L/R
DIR2_I2S
LEGO_CLK
I/V CONVERTER
I/V CONVERTER
-R
+R
-L
H/P-R
H/P-L
R
RJ-45
TX+/-
RX+/-
SPDIF OUT1
I2S-
0
DIR_I2S
I/V CONVERTER
I/V CONVERTER
+L
L
R
L
I2
S-
0
(P
C
M
O
U
T
<=
24bit/192
kH
z
)
D
IR
2_
I2
S
OSC
80MHz
I2
S-
1
(P
C
M
O
U
T
>
24bit/192
kH
z
&
D
S
D
O
U
T
)
LEGO
I2S-0 (PCM OUT <= 24bit/192kHz )
I2S-1
I2S-2(PCM in for Distribution)
I2S-0
DIR_I2S
PCM/DSD DATA/BCK/LRCK
HDAM AMP
HDAM AMP
GND
DATA-
VBUS
DATA+
TC74LCX157FU
(SWITCH)
A
UD
IO O
U
T
(VARIABLE
)
HEADPH
O
NE
O
U
T
A
UD
IO O
U
T
(F
IXED
)
USB_VBUS_ON/OFF
Wi-Fi BT ANT
I2S-1 (PCM OUT > 24bit/192kHz & DSD OUT )
5M570ZF256C5N (PLD)
NJM2114M
(H/P AMP)
NJU72343
(8CH_VOL_IC)
NA6006 AUDIO DIAGRAM
ES9016K2M (MAIN DAC)
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
21