Sony SCD-XE800, Руководство по обслуживанию

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SCD-XE800
SCD-XE800
28 28
• Waveforms
– MAIN Board –
2
IC1902
8
(XTO)
1 V/DIV, 20 ns/DIV
37 ns
3.6 Vp-p
1
IC501
qd
(Xout)
1 V/DIV, 100 ns/DIV
200 ns
3.2 Vp-p
22.6
!
s
3.8 Vp-p
4
IC201
5
(PLRCK)
1 V/DIV, 10
!
s/DIV
3
IC201
3
(PBCK)
1 V/DIV, 200 ns/DIV
356 ns
3.6 Vp-p
• IC Block Diagrams
– MAIN Board –
IC201 DSD1751DBQR
DSDL DBCK 1 20
DSDR DSCK 2 19
PBCK
PSCK
3
18
PDATA
MS
4
17
PLRCK
MC
5
16
DGND
MD
6
15
VDD
ZEROR/ZEROA
7
14
VCC ZEROL/NA 8 13
VOUTL
VCOM
9
12 VOUTR
AGND
10
11
MUX
DSD
FILTER
PCM
I/F
PCM
FILTER
(X8 DF)
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
MULTI-LEVEL
DAC
ANALOG
LPF
DSD
I/F
MUX
MODE
CONTROL
IC203, 1202 TK11150CSCL-G
IC204, 1105, 1107 TK11133CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
IC503 PST8435UL
IC504, 506 SI-3010KM-TLS
IC1902 SM8707EV-G-E2
IC1901 TC74LVX4053FT (EL)
GND 1
VDD 2
+
–
VREF
OUT 4
CD 3
1 VC
TSD
2 VIN
3 GND
4 VOUT
5 ADJ
+
–
REF
1 VDD1
2 VSS1
3 MO1
4 MO2
5 VDD2
6 VSS2
7 XTI
8 XTO
16 NC
15 SO2
14 FSEL
13 SO1
12 VDD3
11 VSS3
10 AO2
9 AO1
X'TAL
OSC
REF.
DIV. 0
PHASE
DETECTOR0
LOOP
DIV. 0
CHARGE
PUMP 0
LPF 0 VCO 0
REF.
DIV. 1
PHASE
DETECTOR1
LOOP
DIV. 1
CHARGE
PUMP 1
LPF 1 VCO 1
CONTROL
LOGIC
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
C B A
OX
IX X-COM Y-
C
O
M
VCC
GND
VEE
INH
OZ
Z-COM
IZ
OY
IY
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
C
OUT
IN
LOGIC LEVEL
CONVER
T
O
R