Sony STR-DE335 - Fm Stereo/fm-am Receiver, Руководство по обслуживанию

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• IC Block Diagrams
– MAIN BOARD –
IC1 BU1922 (STR-DE335: AEP model)
IC300 CXA8079S
IC301 LV1018
IC401 LC78212 IC701, 702 µPC2581V
QUALITY BIT
GENERATOR
DEFFERENTIAL
DECODER
BIPHASE
SYMBOL
DECODER
OSCILLATOR
AND
DIVIDER
57kHz
BANDPASS
(8th ORDER)
CONTAS LOOP
VARIABLE AND
FIXED DIVIDER
REFERENCE
VOLTAGE
ANTI-
ALIASING
FILTER
CLOCKED
COMPARATOR
TEST LOGIC AND OUTPUT
SELECTOR SWITCH
RECONSTRUCTION
FILTER
14 15 16 13 12 11 10 9
3 2 1 4 5 6 7 8
CLOCK REGENERATION
AND SYNC
VP1
RDCL TS7 OSCO OSCI V
DDD
V
SSD
TEST TSTL
D
QUAL
RDDA
Vref
MUX V
DDA
V
SSA
CIN
SCOUT
48
VCS2 VCS1 VCS-TH L+R-RCT L-R-RCT DCUT DCUT R-BPF3 R-BPF2 R-BPF1 CT
-OUT2
CT
-IN2
MIXOUT C-OUT S-OUT R-OUT L-OUT VCC CM-CAP FCC-IN2 ENABLE D
ATA
CLK OSC1
NS-BPF1 NS-BPF2
VREF
S-DCUT C-DCUT
L-DCUT
R-DCUT
VREF-BUF
L-IN R-IN GND
CT
-OUT1 CT
-IN1
FCC-IN1
L-BPF1 L-BPF2 L-BPF3
DCUT DCUT
R-RCT
L-RCT
VLR-TH
VLR1 VLR2
47 46 45
44 43
42
41 40 39 38 37
36 35 34 33 32 31
30 29 28
L+R-RECT
27 26
25
P.S VCS-LOG
OSC DEC
N-GEN
N-BPF
N-OH
DIV
BAL-DET
BALCONT
VREF
VR VR
VCRX8
COMB-NET
CMODE SMUTE
C-TRIM P B
P B
P B P B
R
B
R
B
R-B.P.F.
L-B.P.F.
L-R-RECT
R-RECT
L-RECT VLR-LOG
DUAL-TIME
P.S
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
VSS CLK
D
ATA
ENABLE
LS-DC CUT LS-DC CUT
DC CUT
-IN
VCC L-IN
R-IN S-IN
AC-GND
NR-C2 FCL-IN
FCR-IN
FCLS-IN
FCRS-IN
DELA
Y
-OUT
DELA
Y
-IN
CR-IN CR-OUT LC-INE LC-INB RS-DC CUT RS-DC CUT AGND DC-OUT IREF DET LPF L-OUT R-OUT LS-OUT RS-OUT VDD A/D NS D/A
1 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 21
22 23 24 25 37 36 35 40 41 42 39 38 34 33 32 31 30 29 28 27 26
LS
TRIM
FILTER
B-NR
VDD
PCM
DATA
DECODER
OSC
PCM
CONTROL
8K-SRAM
FILTER
VOLUME
FILTER
R-STEREO
RS
TRIM
+
–
+
+
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
CONTROL
LATCH
SHIFT RESISTOR
LEVEL SHIFT
CL
DI
CE
VEE
OUT
IN
OUT
IN
OUT
IN
VSS
S
RESET
VDD
OUT
IN IN
OUT
IN
OUT
IN
2 3
5
4
6
7 9 8 1
MUTE
+ VOUT1 – VOUT1
COMP1
MF1
IN1
GND
IN2
NF2
COMP2
– VOUT2 + VOUT2
VCC1 VCC2
VEE
PROTECTOR
BIAS CIRCUIT
REG DRIVE
PRE
DRIVE
11 10 12 13 15 14
DRIVE
PRE
DRIVE