Block Diagram - Main Section - Sony HCD-MD1EX - System Service Manual

7-3. BLOCK DIAGRAM – MAIN Section –
A/D, D/A CONVERTER
IC201
ADDT
SDTO
(Page 36) C
14
DADT,BCK,
LRCK, FS256 SERIAL
DADT SDTI
(Page 36) D
13
I/O
INTERFACE
XBCK SCLK
12
LRCK
LRCK
11
FS256
MCLK CLOCK
15
DIVIDER
CD-L
A
(Page 34)
J501
L
TAPE
OUT
R R-CH
REC OUT
CONTROL SWITCH
MUTING
Q702
J502
R-CH
L
TAPE
IN
R R-CH
ATTENUATOR ATTENUATOR
(–6dB) CONTROL SWITCH
Q704
R-CH
AEP, UK models
FM 75
COAXIAL
FM/AM TUNER UNIT
FM
AEP, UK models
FM ANT L-OUT
FM ANT R-OUT R-CH
AM ANT
RDS SIGNAL
FM-DET
BUFFER
OUT
AM ANT
Q713
AM LOOP
ANTENNA
ANTENNA
MUTE
STEREO
Except AEP, UK models
TUNED
DI
DO
CLK
CE
87 86 84 85 83 82 88
05
AINL
5
DECIMATION
AINR
FILTER MODULATOR
3 R-CH
AOUTL
8
26
MODULATOR &
INTER-
AOUTR
LOW-PASS
27 R-CH
POLATOR
FILTER
MODE
CONTROL
24 23 16
MUTING
Q705
Q706
SC
57 kHz
CONTANS LOOP
MUX CIN
OUT
CLOCKED
4 BAND-PASS 8 7
VARIABLE &
COMPARATOR
FILTER FIXED DIVIDER
CLOCK
OSCILLATOR
RDS DECODER
REGENERATION
& CLOCK
IC710
& SYNC
13 14 16
X703
4.332MHz
20
– 37 –
INPUT SELECT SWITCH,
TONE CONTROL, ELECTRICAL VOLUME
IC705
35
TONE VOL
TONE VOLUME
MD OUT IN
36 CONTROL 30 29 CONTROL
CIRCUIT CIRCUIT
BUFFER
INPUT
AMP
CD
37 SELECT
TC SWITCH
38
CPU INTERFACE
ST
39
21 22 20
EEPROM
IC171
5 6
25 24 7 79 80
XOUT 13
XIN 15
MD MECHANISM
CONTROLLER
IC316 (2/2)
PWR-DWN
BIPHASE
SYSTEM-RST
SYMBOL
DECODER
31 32 33 34 26
DIFFERENTIAL
DECODER
RDDA
2
LEVEL LEVEL
SHIFT
SHIFT
IC704 (1/3) IC704 (2/3)
21 77 75 37 38 39 31 41
MASTER CONTROLLER
(SYSTEM CONTROL)
IC707 (2/3)
16
LEVEL SHIFT
IC704 (3/3)
POWER AMP
IC506
VOL
BB BB
BASS BOOST
OUT
IN OUT
28 27 CONTROL 25 8 3
CIRCUIT
26 6 11 9 14
FEED BACK
SWITCH
Q709
D521
R-CH
STANDBY
SWITCH
D710
Q514, 520
MUTING CONTROL
SWITCH
Q516
POWER SWITCH
X302
Q512
7MHz
19
BACK UP
+3.3V
RESET SIGNAL
12 GENERATOR
IC706
D707
Q707
35 78 79 80 74 76 34
17 14 13 11 10
X701 X702
32kHz 5MHz
– 38 –
HCD-MD1EX
SIGNAL PATH
: MD PLAY
: MD REC
: CD PLAY
: FM/AM
: TAPE PLAY
: TAPE REC
R-CH
J101
PHONES
R-CH R-CH
+
+ +
L
–
+
R
–
D522
D523
TM101
SPEAKER
IMPEDANCE
DC DETECT
USE 4 – 16
Q510, 511
FAN MOTOR
M
DRIVE
Q518, 519
M501
(FAN)
RELAY
+
E
(Page 40)
POWER DOWN
PWR-DWN
DETECT F
Q504, 505
(Page 40)
POWER OFF
MUTE DRIVER
Q711, 712
RESET SIGNAL
D+5V
GENERATOR
IC708
RESET
SWITCH
Q710
100 15