Read Sony STR-DE235 Service Manual online
STR-DE235
– 7 –
– 8 –
SECTION 4
DIAGRAMS
4-1.
BLOCK DIAGRAM – MAIN Section (1/2) –
FUNCTION
SWITCH
IC401
DOLBY SURROUND
PRO-LOGIC DECODER
IC300
DOLBY SURROUND
PASSIVE DECODER
IC301
VOLUME
MOTOR DRIVE
IC202
SYSTEM CONTROLLER
IC201 (1/2)
05
B
(Page 9)
C
(Page 9)
(Page 9)
A
(Page 9)
•
SIGNAL PATH
: TUNER (FM)
FM/AM TUNER PACK
COM
COM
L OUT
FM-ANT
FM-ANT
GND
GND
AM-ANT
AM-ANT
GND
GND
R OUT
VIDEO
TV/SAT
R-CH
R-CH
S.CLK
4
8
7
13
14
16
2
45
24
19
18
15
S.DATA
14
S.LAT
13
CLK 47
DATA 46
ENABLE
OSC1
45
48
CLK
2
DATA
3
ENABLE
4
26
25
X201
4.19MHz
CENTER
RCH
LCH
REAR
–1
–2
L-OUT
R-OUT
S-OUT
C-OUT
L-IN
R-IN
VIDEO
REC
TAPE
REC
REC COM
FUNC.MUTE
43
42
3
2
54
UP
8
DOWN
UP
DOWN
VOL UP
VOL DOWN
34
35
X1
X2
21
SP-RLY
22
SURR-RLY
16
SP-RLY
SURR-RLY
PROTECT
7
23
L-IN
11
R-IN
12
S-IN
13
LC-INB
39
LC-INE
40
CR-OT
41
CR-IN
42
LS-OUT
9
10
41
40
39
38
22
21
20
LEVEL
SHIFT
SHIFT
REGISTER
& LATCH
CPU
INTERFACE
J402 (1/2)
VIDEO
AUDIO IN
L
R
RV421
BASS
RV422
TREBLE
RV423
BALANCE
R-CH
TV/LD
AUDIO IN
L
R
R-CH
J401 (1/2)
MD/TAPE IN
L
R
LINE AMP
IC302 (1/2)
LINE AMP
IC404 (1/2)
LINE AMP
IC404 (2/2)
LINE AMP
IC302 (2/2)
MOTOR
DRIVE
MUTING
Q363
25
24
L-OUT
R-OUT
MUTING
Q361
MUTING
Q362
OSC
MUTING
Q365
ANTENNA
AM
FM 75
Ω
COAXIAL
R-CH
R-CH
CD IN
L
R
R-CH
R-CH
J402 (2/2)
J401 (2/2)
VIDEO
AUDIO
OUT
MD/TAPE
REC OUT
L
R
R-CH
L
R
R-CH
CD
R-CH
29
27
23
R-CH
R-CH
PHONO
R-CH
30
TUNER
R-CH
28
MD/TAPE
24
R-CH
S.DATA
S.CLK
S.LAT
DATA
CLK
EN1
DATA
CLK
EN1
PLL DATA
PLL DATA
TUNED
STEREO
SIGNAL
TUNER-MUTE
AUTO-STOP
13 S.CE (LV1018)
12 S.CE (LC7822)
9
S.CLK
10 S.DATA
11 PLL.DATA
STEREO-IN
SIGNAL
TUNER-MUTE
TUNER-MUTE
31
RDS DATA IN
46
RDS CLK IN
TUNED
STEREO
STEREO
SIGNAL
TUNER-MUTE
D
ATA
CLK
EN2
DATA
CLK
CLK
EN1
EN2
DO
TUNED
STEREO
SIGNAL
DET OUT
T.MUTE
RDS DECODER
IC1
57 kHz
BAND-PASS
FILTER
CLOCKED
COMPARATOR
CONTANS LOOP
VARIABLE &
FIXED DIVIDER
CLOCK
REGENERATION
& SYNC
OSCILLATOR
& CLOCK
DIFFERENTIAL
DECODER
BIPHASE SYMBOL
DECODER
X1
4.332MHz
MUX
CIN
RDDA
OSCI
OSCO
RDCL
SC
OUT
–1
–2
–1
–2
–4
–5
–6
RV404
MASTER VOLUME
–3
D
(Page 9)
E
M
PROTECT
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