Service Manual

33
STR-K680/K780
IC1401 PCM1800E/2K
SINGLE-END
DEFERENTIAL
CONVERTER
REFERENCE
SINGLE-END
DEFERENTIAL
CONVERTER
DIGITAL ∑
MODULATOR
DIGITAL ∑
MODULATOR
1/64
DECIMATION
FILTER
&
LOW-CUT
FILTER
CLOCK/
TIMING CONTROL RESET/
POWER CONTROL
SERIAL I/O
INTERFACE
&
MODE/FORMAT
CONTROL
LIN
V REF 1
REFCOM
V REF 2
RIN
RSTB
FMT0
BYPASS
FMT1
MODE1 MODE0
FSYNC
1 2
3
4
5 6 87 9
1110 12
AGND VCC C PR C NR C PR C NR DGND SYSCLK DOUT BCK LRCK VDD
24 23 22 21 20
19 17
16 15 14 13
18
IC501, IC601, IC701 STK350-530-E
123 4 56
STAND-BY
CIRCUIT
PRE
DRIVER
PRE
DRIVER
DRIVER
DRIVER
47kΩ
33Ω
33Ω
4.7kΩ
789101112131415
STANDBY CONTROL
+VOUT1
-VOUT1
+VOUT2
VCC VCC
VEE
-VOUT2
NF1
PHASE PHASE
NF2
IN1 IN2
GND
– MAIN Board –
– DIGITAL Board –
Ver. 1.2