Sony CFD-S28 Service Manual ▷ View online
CFD-S28
– 17 –
– 18 –
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – CD Section –
A
B
D
12
13
4
10
7
11
6
F
E
C
I-V AMP
DETECTOR
39
38
17
18
26
27
2
SL+
SL–
SLO
F–
F+
T+
T–
SPINDLE
MOTOR DRIVE
M701
(SPINDLE)
S701
(LIMIT)
SLED
MOTOR DRIVE
1
M702
(SLED)
FOCUS
COIL DRIVE
TRACKING
COIL DRIVE
SP+
SPO
MUTE
SP–
9
15
14
3
19
25
FIN
TIN
SLIN
SPIN
SPI
SLP
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC702
16
14
SLED
AMP
LD
PD
LASER DIODE
OPTICAL PICK-UP
(KSS-213C)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
33
32
27
35
18
22
20
21
19
23
RF AMP,
FOCUS/TRACKING
SERVO
IC701 (1/2)
FOCUS OK
COMPARATOR
MIRR
AMP
DEFECT
AMP
FOCUS OK
AMP
IIL DATA REGISTER
31
29
FILTER
33
30
FILO
PCO
CLTV
FILI
XPCK
DIGITAL PLL
ASYMMETRY
CORRECTION
CORRECTION
EFM
DEMODULATOR
DIGITAL
OUT
ERROR
CORRECTOR
16K
RAM
INTERNAL BUS
SUB-CODE
PROCESSOR
OSC
CLOCK
GENERATOR
SERVO AUTO SEQUENCER
DIGITAL
CLV
14
12
41
43
39
13
79
5 4
6
7 9 8
57 58 59
62
70
11
10
41
42
36
37
1
40
45
2
47
12
11
6
25
24
13
PD1
PD1 I-V AMP
RFO
RF
37
ASYI
38
48
ASYO
FOK
DATO
CLKO
XLTO
SEIN
CNIN
MDP
SQSO
SQCK
SENS
DATA
CLOK
XLAT
XLON
SPOA
SCOR
SBSO
EXCK
XUGF
WFCK
EMPH
EMPHI
SYSM
XTAI
71
XTAO
RFI
FOK
DATA
CLK
SENS1
26
SENS2
C.OUT
XLT
LOCK
PD2 I-V AMP
PD2
TTL
IIL
FEO
TEO
PD
FEI
FEO
TAO
TEI
TTL
IIL
TTL
IIL
XRST
FOCUS
ERROR
AMP
RF
SUMMING
AMP
TRACKING
ERROR
AMP
TRACKING PHASE
COMPENSATION
FOCUS PHASE
COMPENSATION
AUTOMATIC
POWER CONTROL
Q701
I-V
AMP
LD
AMP
PD
AMP
FE BIAS
F
E
LD
PCMD
53
DOUT
BCK
LRCK
PCMDI
BCKI
LRCKI
42
44
40
50
C2PO
SLED SERVO
IC701 (2/2)
05
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC703
SYSTEM CONTROLLER
IC501 (1/2)
• SIGNAL PATH
: CD PLAY
R-CH: Same as L-CH.
21
CPU INTERFACE
D/A INTERFACE
SERIAL
INPUT
INTERFACE
PWM
PWM
OVER
SAMPLING
DIGITAL
FILTER
NOISE
SHAPER
56
54
55
AOUT2
65
XTSL
51
C4M
52
AOUT1
AIN2
R-CH
CD L-CH
AIN1
LOUT2
LOUT1
76
75
66
74
67
GFS
X701
16.9344MHz
49
47
9
8
14
3
10
7
12
5
14
3
15
2
13
4
16
1
5
CNP701
3
4
4
3
CNB702
CNP707
+
MAIN BOARD (1/2)
CD MOTOR BOARD
M
1
6
2
5
5
2
6
1
M
XRST
A
(Page 21)
C-MUTE 68
C-SCOR
C-DOOR
1
78
C-LA
TCH
11
C-CLOCK
10
C-DA
TA
12
C-SENS
5
C-SQCK
7
C-SQSO
8
9
C-SENS2
6
C-RST
17 15
7
S501
(CD LID OPEN/CLOSE DET)
KH503
2
1
CFD-S28
– 19 –
– 20 –
6-2.
BLOCK DIAGRAM – TUNER Section –
2
24
4
7
20
21
FM
RF AMP
FM
MIX
FM
OSC
FM IF
AMP
IF
BUFFER
AF
BUFFER
AF
AMP
MPX
MUTE
STEREO/
MONO,
FM/AM
FM/AM
AM IF
AMP
FM
DET
AM
DET
6
FM RF
IN
IN
22
AM
RF AMP
AM
MIX
AM RF
IN
IN
FM/AM
MIX OUT
OSC
OUT
OUT
CF1
10.7MHz
CF3
10.7MHz
FM/AM PLL
IC2
CF4
450kHz
FM
RF OUT
RF OUT
10
QUAD
FM
IF IN
IF IN
12
15
11
LOUT
MPX
IN
IN
ROUT
13
AM
IF IN
IF IN
LPF1/BAND
AM OSC
FM OSC
FM/AM RF AMP, MIX, OSC,
FM/AM IF AMP, DET, MPX
IC1
L2
FM VCO VOLTAGE
L4
AM VCO VOLTAGE
CT1, L1
FM TRACKING
T1
IFT
CT3, L3
AM TRACKING
B.P.F.
FL1
LOW-PASS
FILTER
• SIGNAL PATH
: FM
: AM
05
X1
75kHz
CT3
L3
AM FERRITE-ROD
ANTENNA
L1
FM RF
XOUT
XIN
AM IN
IF IN
ST
-IND
MW
LP-OUT
LP-IN
FM IN
21
20
12
13
19
7
LW
6
CT1
D1
L4
AM OSC
L2
FM OSC
LEVEL
DET
ST
IND
14
LPF2/MO-ST
AM
OSC
BUFFER
BUFFER
SWALLOW
COUNTER
UNIVERSAL
COUNTER
CCB
INTERFACE
REFERENCE
DIVIDER
UNLOCK
DETECT
12 BIT
PROGRAMMABLE
DIVIDER
PHASE
DETECTOR/
CHARGE PUMP
SHIFT REGISTER & LATCH
1/2
BAND
DI
CL
CE
DO
L-CH
R-MUTE
R-DATA
R-CLOCK
R-LATCH
R-COUNT
R-CH
CNP2
(1/2)
CNP1
1
2
DET
OUT
ANT1
FM TELESCOPIC
ANTENNA
PD
IF OUT
ST IND
3
4
2
5
11
10
BAND
8
MO/ST
14
9
18
17
17
18
16
19
D2
D3
(1/2)
D3
(2/2)
Q13
IF REQUEST
SWITCH
Q12
AM HIGH
CUT
SWITCH
5
1
3
2
4
TUNER BOARD (1/2)
B
(Page 21)
C
(Page 21)
T1
AM IF
CFD-S28
– 21 –
– 22 –
– 23 –
– 24 –
6-3.
BLOCK DIAGRAM – MAIN Section –
REC/PB EQ AMP
IC301
SOUND CONTROL,
ELECTRICAL VOLUME
IC302
POWER AMP
IC303
05
A
(Page 18)
T901
POWER
TRANSFORMER
RECT OUT
AC HI
VDD
COM
BATT
•
SIGNAL PATH
: CD PLAY
: TUNER (FM/AM)
: TAPE PLAY
: TAPE RECORD
: TAPE RECORD
R-CH: Same as L-CH.
SHIFT
CLOCK
CLOCK
Q505
Q505, 506
SHIFT CLOCK
Q506
X501
4.19MHz
RADIO
REC B+
AU VDD
CD 5V
COM 5V
VDD SW
RST
CD
SYSTEM
CONTROLLER
(IC501) B+
POWER AMP
(IC303, 304) B+
Q406
D909
D908
STBY
D351
R-CH
R-CH
R-CH
Q309
MEGA BASS
CONTROL
SWITCH
IN2
OUT2
S601 – 607, 609 – 614,
S617 – 624
S304
(TAPE PLAY)
S303
(MOTOR ON/OFF)
M301
(CAPSTAN/REEL)
D302
Q322, 323
REC/PB
SWITCHING
(PB: ON)
B+ (REC B+)
B+
(REC B+)
B+
(REC B+)
B+ (VDD SW)
B+ (REC B+)
B+ (CD 5V)
VREF
L.LO
L.CD
MIC IN
VREF
VREF
VREF
L.RAD
L.IN
L-CH
R-CH
XT
AL
EXT
AL
D
ATA
CLK
LA
T
KEY3
KEY1
KEY2
TAPE
RADIO
REC
29
32
31
30
70
71
8
19 20 18
VC
23
BC
21
25
23
24
R-LA
TCH
R-DA
TA
R-CLOCK
17
15 16
B-MUTE
R-COUNT
67
14
13
79
TAPE
69
V
-D
ATA
19
V
-CLOCK
20
V
-LA
TCH
18
A-MUTE
66
P-CON
21
REG CHK
80
15 17 21
6
20
31
24
12
3
5
L.RO
4
22
24
13
L-CH
CD
L-CH
L-CH
R-CH
R-CH
R-CH
R-CH
MUTE
MUTE
KH303
(1/2)
1
2
CNP301
HRP301
(REC/PB)
HE301
(ERASE)
4
3
B
(Page 20)
MAIN BOARD (2/2)
SECONDARY BOARD
CONTROL BOARD
2
CNP304
2
1
5
6
PB
EQ AMP
MONITOR
AMP
MATRIX
SOUND
CIRCUIT
TONE
CONTROL
CIRCUIT
LINE MUTE
SWITCH
Q308
RECT
D901 – 904
REGULATOR
IC901
AC DET
Q408
B+ SWITCH
Q952, 953
+6V
REGULATOR
Q954, 955
+5V
REGULATOR
IC502
+5V
REGULATOR
Q957
RADIO POWER
SWITCH
Q311, 312
CD POWER
SWITCH
Q313
RESET SIGNAL
GENERATOR
IC503
AC, BATTERY
CHECK
Q501, 502
B+ SWITCH
Q951
PROTECT
SWITCH
Q401
CONTROL
VOLUME
CONTROL
CIRCUIT
MIC
AMP
REC
EQ AMP
BIAS OSC
Q301
REC/PB
SWITCHING
Q324, 325
REC/PB
SWITCHING
Q326
REFERENCE VOLTAGE
GENERATOR
LOGIC CIRCUIT
DET
ALC
BUFFER
BUFFER
Q321
REC/PB
SWITCHING
(REC: ON)
T301
BIAS OSC
VREF
REC
TC-PLAY
S305
(REC)
B+ (VDD SW)
3
4
CNP502
4
2
1
6
1
3
2
KH506
4
5
CNP602
4
2
1
6
M
M
D601
OPR/BATT
10
5
+
KH306
5
4
CNP306
5
4
CNP902
4
1
UCOM
R-VT
PLL 5V
RADIO 6V
3
SW D
5
KH302
2
5
3
5
6
4
1
KH303
(2/2)
(2/2)
2
1
CNP305
5
6
4
CNP2 (2/2)
PLL LOW-PASS
FILTER CIRCUIT B+
FM/AM PLL (IC2) B+
FM/AM TUNER (IC1) B+
KH905
1
2
CNP904
1
2
KH902
2
1
3
CNP906
2
1
3
CNP307
SP301
(L-CH)
(L-CH)
SP302
(R-CH)
4
3
J301
(HEADPHONE)
2
CNJ901
⁄ AC IN
1
2
HEADPHONE
BOARD
PRIMARY
BOARD
KH901
9V
4.5V
0V
3
1
2
4
CNP901
3
1
2
4
BATTERY
BOARD
BATTERY
COMMON BOARD
D906
D905
D907
D403 – 405
D402
D401
D406 – 408
D910
D952
D951
D303
D955
DRY BATTERY
SIZE “D”
(IEC DESIGNATION R20)
6PCS. 9V
(FOR POWER SUPPLY)
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
4PCS. 6V
(FOR BACK UP)
AC DET
Q409
LEVEL DET
Q405
LEVEL DET
Q407
Q404
Q402
TUNER BOARD (2/2)
C
(Page 20)
X502
32.768kHz
TX
TEX
73
74
SEG0 – SEG22
LIQUID CRYSTAL DISPLAY
LCD501
42 – 64
COM0 – COM3
38 – 41
SYSTEM CONTROLLER
IC501 (2/2)
CFD-S28
– 25 –
• Circuit Boards Location
TUNER board
HEADPHONE board
BATTERY board
BATTERY COMMON board
PRIMARY board
SECONDARY board
CONTROL board
MAIN board
CD MOTOR board
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