Sony CFD-930L / CFD-V34L / CFD-V37L Service Manual ▷ View online
— 17 —
REC SW board
BATT board
CD MOTOR board
MONO/ST board
MAIN board
POWER board
CONTROL (2) board
CONTROL (1) board
PRIMARY board
HEADPHONE board
JUCK RETAINER board
RMC board
SECTION 5
DIAGRAMS
5-1.
CIRCUIT BOARDS LOCATION
— 18 —
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
I/O
I
I
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
O
—
O
I
I
I
O
O
O
Description
SCOR input to CD
Remote control signal input
Reset output to CD system
CD block mute ON/OFF
Input from ROCK key
Input from POP key
Clock for reading CD SUBQ
CD SUBQ data input
Input from TAPE REC switch
CD SENS input
CD SENS2 input
Input from CD-PLAY key
Input from CD-STOP key
Clock for CD DSP command
Latch output from CD system
Command data output from CD DSP
Input from MEGA BASS switch
Input from TONE + key
Input from TONE – key
Input from VOL + key
Input from VOL – key
Mode check from RADIO/SOUND
Open/close sense from CD door
Input from RADIO BAND switch
Input from CD key (A/D)
Input from TAPE FUNCTION key
Input from FM/RADIO key
Input from AM FUNCTION key
Input from CD FUNCTION key
Reset input
4.19 MHz input
4.19 MHz output
Microprocessor reference GND
ON/OFF terminal of LCD drive port
LCD drive voltage terminal
LCD drive voltage terminal
LCD drive voltage terminal
LCD common output port
LCD common output port
LCD common output port
Pin Name
C-SCOR
RMC
C-XRST
B-MUTE
ROCK
POP
C-SQCK
C-SQSO
REC
C-SENS
C-SENS2
CD-PLAY
CD-STOP
C-CLK
C-XLT
C-DATA
MEGA BASS
TONE +
TONE –
VOL +
VOL –
MODE CHK
C-DOOR
BAND CHK
CD KEY
TAPE
FM/RADIO
AM
CD
RST
4.19 MHz
4.19 MHz
Vss
VL
VLC3
VLC2
VLC1
COM0
COM1
COM2
5-2.
IC PIN FUNCTION
IC501 CXP83416
CFD-V34L
— 19 —
— 20 —
— 21 —
— 22 —
5-3.
BLOCK DIAGRAM
Pin No.
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
—
—
—
O
O
I
I
I
Description
LCD common output port
LCD segment signal output port
ON/OFF terminal of audio mute
CD FUNCTION control terminal
RADIO FUNCTION control terminal
TAPE FUNCTION control terminal
Serial clock of VOL IC
Serial data output of VOL IC
Chip enable of VOL IC
AM/FM output
ISS selection
SOUND MODE VOCAL output terminal
SOUND MODE LINE output terminal
SOUND MODE ROCK output terminal
SOUND MODE POP output terminal
Power supply
500 kHz
500 kHz
No connection
Power ON/OFF control terminal
Initialization control terminal
Input from TC-PLAY
Input from WAKE UP/POWER KEY
REG check
Pin Name
COM3
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
OUT
A-MUTE
CD
RADIO
TAPE
V-CLK
V-DATA
V-CE
AM/FM
ISS
VOCAL
LIVE
ROCK
POP
VDD
TX
TEX
NC
PCON
INIT
TC-PLAY
W-UP/POW
REG-CHK
L1
FM RF
L2
FM OSC
L3
MW
BAR
ANTENNA
ANT1
FM
TELESCOPIC
ANTENNA
1
20
22
19
24
15
FM
FRONT END
FM RF
FM RF
FM OSC
AM RF
AM OSC
16
FM/AM
FE OUT
AM
FRONT END
CF1
CF2
T2
IFT
13
14
FM IF
AM IF
FM
MPX
FM/AM
BUFFER
FM
DET
AM
DET
6
5
R-CH
R-CH
26
IC1
FM/AM FRONT-END
FM/AM DET,FM MPX
27
T1
RV1
OPTICAL PICK-UP
BLOCK
(KSC-213C)
LD/POWER
CONTROL
Q701
41
VCC
CD5V
A
VC
C
B
D
E
F
VC
LD
GND
A
C
B
D
E
F
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
36
34
42
39
38
51 VC
LD
E
F
PD1
PD2
6
24
25
22
21
20
23
33
27
11
10
12
13
14
21
15
79
35
18
SENS
RFO
67
LO
74
RO
FOK
C OUT
DATA
XLT
CLK
XRST
9
57
7
6
5
8
62
SCOR
SYSM
CLOK
DATA
SENS
SQSO
4
SQCK
70
XTAI
71
XTAO
XLAT
SENS
RFO
FOK
C OUT
DATA
XLT
CLK
MDP
17
XLON(MUTE)
SPOA
XRST
16
13
FEO
TEO
SLO
IC703(1/2)
FOCUS/TRACKING COIL
SLED/SPINDLE MOTOR
DRIVER
IC703(1/2)
SPINDLE MOTOR
DRIVER
IC701
CD RF/SERVO
PROSSESOR
26
19
T IN
27
17
18
VR
PD
PD
2
1
12
11
25
F IN
3
SL IN
9
14
15
SP IN
7
MUTE
F+
F
T+
T
SL+
SL
SP+
SP
M
M
MOTOR
M702
SLED
SLED
MOTOR
M701
SPINDOL
S701
LIMIT
L-OUT
R-OUT
3
PILOT DET
IC703
SIGNAL PROCESSOR
D/A CONVERTER
16
20
CD L
R-CH
R-CH
HRP901
REC/PB
REC/PB
HEAD
HE901
ERASE
HEAD
BIAS
OSC
Q301
IC301
PRE AMP
16
14
5
4
15
21
REC H
TC
RADIO
CD
PB
REC
PB AMP
26dB
2
L
6
REG
TAPE
TAPE
T301
2
MATRIX
SURROUND
TONE
VR
CONTROL
REG
9
4
5
6
8
7
18
20
19
23
21
DATA
VC
CLK
LATCH
BC
AUDIO
MUTE
Q308
BASS
AGC
Q309
RADIO B+
SWITCH
Q505
12
8
D351
IC304
POWER AMP
R-CH
H/P JACK
J301
L
R
SPEAKER
S301
REC PB
+5V
REC AMP
AMP
BUFFER
7dB
17
RA
IC302
SOUND/VOLUME
14
1
16
10
8
15
3
4
24
60
3
2
CD
76
PCON
30
RST
61
RADIO
59
62
63
65
64
9
TAPE
REC
67
ISS
A-MUTE
V-CLK
V-CE
V-DATA
SCOR
C-XRST
B-MUTE
BAND CHK
C-CLK
C-DATA
C-SENS
C-SQSO
SEG0-15
C-XLAT
7
C-SQCK
23
78
CD-DOOR
TC-PLAY
12
17
18
19
13
CD-PLAY
MEGA BASS
TONE+
TONE–
CD-STOP
20
VOL+
27
26
29
79
25
28
21
TAPE
VOL–
FM/RADIO
CD
POWER/WAKE UP
CD KEY
AM
IC501
SYSTEM
CONTROL
X701
16.9344MHz
32
XTAL
31
EXTAL
X501
4MHz
73
TX
74
TEX
X502
500kHz
45-47
COM0-3
38-41
LCD501
LIQUID CRYSTAL DISPLAY
S601
S602
S607
S611
S609
S616
S615
S654
S653
S655
S656
S651
S603-S606,S650
S501
CD DOOR
S802
TAPE PLAY
CD B+
SWITCH
Q504
COM B+
SWITCH
SWITCH
Q954
AU B+
SWITCH
Q953
RECT
RECT
D901-D904
D907,D908
B+
SWITCH
Q503
B+
SWITCH
Q951
D905
D501
B+
ON/OFF
Q952
SWITCH
Q501
B+
ON/OFF
Q502
RADIO +5V
CD +5V
COM +5V
AU +6V
DRY BATTERY
SIZE"D"
(IEC DESIGNATIO R20)
6PCS,9V
T901
POWER
TRANSFORMER
D906
B+
REG
IC502
3
1
RESET
IC503
1
3
REMOTE
CONTROL
RECEIVER
IC601
D502
D953
80
REG CHK
2
RMC
SIGNAL PATH.
:FM
:PB
:REC
:CD
:PB
:REC
:CD
J901
AC IN
BPF
FL1
TP3
L4
MW
OSC
TP3
S1
FM
MW
LW
RADIO +5V
BAND SELE
SWITCH
Q302
S302
FM MODE
ST
MONO
D3
D511
D601
CFD-V34L
5-7.
SCHEMATIC DIAGRAM — CD SECTION —
— 35 —
— 36 —
— 37 —
5-8.
IC BLOCK DIAGRAMS
–
+
+
–
–
+
+
1
2
3
4
5
6
7
8
9
10
20
19
17
16
15
14
13
12
11
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
52
51
50
49
48
47
+
–
+
–
+
–
+
–
–
+
–
+
–
+
+
–
+
–
+
–
+
–
–
–
+
+
–
–
+
–
+
+
–
+
–
–
+
–
–
+
–
+
–
+
–
–
+
–
+
–
+
–
+
+
–
+
–
–
+
+
–
–
+
–
+
+
–
–
18
–
+
–
+
–
+
+
–
+
–
–
+
Charge
up
up
FEO
FEI
FDFCT
FGD
FLB
FE_O
FE_M
SRCH
TGU
TG2
FSET
TA_M
TA_O
SL_P
SL_M
SL_O
ISET
VCC
VCC
LOCK
CLK
XLT
DATA
XRST
C. OUT
SENS1
SENS2
FOK
CC2
CC1
CB
CP
RF_I
RF_O
RF_M
RFTC
LD
PD
PD1
PD2
FE_BIAS
F
E
EI
VEE
TEO
LPFI
TEI
ATSC
TZC
VC
FZC
TM2
VEE
VEE
TM3
TM5
TM4
TM6
VCC
VCC
TM7
ISET
TTL
↓
IIL
IIL
↓
TTL
IIL
↓
TTL
IIL DATA REGISTER
INPUT SHIFT REGISTER
ADDRESS DECODER
SENS SELECTOR
OUTPUT DECODER
INPUT SHIFT REGISTER
ADDRESS DECODER
SENS SELECTOR
OUTPUT DECODER
DFCTO
IFB1-6
BAL1-4
TOG1-4
BAL1-4
TOG1-4
FS1-4
TG1-2
TM1-7
PS1-4
FOH
FOL
TGH
TGL
TGL
BALH
BALL
ATSC
BALL
ATSC
TZC
FZC
FZC
FSET
TG2
VEE
VCC
FS1
FS2
FOCUS
PHASE COMPENSATION
PHASE COMPENSATION
DFCT
FS4
TRACKING
PHASE COMPENSATION
PHASE COMPENSATION
TG1
TM1
DFCT
FZC COMP.
VEE
VCC
VCC
TDFCT
TZC COMP.
ATSC
WINDOW
COMP.
WINDOW
COMP.
E-F BALANCE
WINDOW COMP.
WINDOW COMP.
TRK. GAIN
WINDOW COMP.
WINDOW COMP.
FO. BIAS
WINDOW
COMP.
WINDOW
COMP.
VEE
TGFL
TOG1
TOG2
TOG3
TOG4
BAL1
BAL2
BAL3
BAL4
IFB1
IFB2
IFB3
IFB4
IFB5
IFB6
FE AMP
VEE
E IV AMP
F IV AMP
VCC
APC
VCC
VEE
LASER POWER CONTROL
VEE
PD1 IV
AMP
AMP
PD2 IV
AMP
AMP
RF SUMMING
AMP
AMP
VCC
VEE
VEE
LEVEL S
LEVEL S
VEE
MIRR
VCC
DFCT
FOK
VCC
LDON
LPCL
LPC
TGFL
MIRR
DFCT1
CC1
30
29
4
5
6
7
8
9
10
11
12
13 14 15
3
2
1
28 27
26 25 24 23 22 21
20
19
18
17
16
REG
FM FRONT-END
AM FRONT-END
VCO
MPX REG.
1/2
COUNTER
1/2
COUNTER
PD1
PD2
MUTING
DECODER AMP
MONO/ST
SELECT
RIPPLE
FILTER
AUTOBLEND
BAND PASS
MUTE
TUNING
INDICATOR
FM IF/
DISCRI
AM
IF/DET
GND
PLL LPF2
MPX REG
VCO
FM
DISCRI
MUTE
AM OSC
AFC
FM OSC
REG
FM RF
AM RF IN
FM RF IN
BAND SELECT
AM IF IN
FM IF IN
TUNE IND
GND
VCC
L CH OUT
R CH OUT
ST IND/
VCO CHECK
PILOT DET LPF2
PILOT DET LPF2
PLL LPF1
AGC AFC2
AGC AFC1
RIPPLE
FIL
TER
FM GND
FM/AM
FE OUT
IC1
CXA12138S
IC701
CXA1992BR
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
U
: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark : CD PLAY
no mark : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD
• Abbreviation
IT
: Italian
CET
: East European and CIS
EE
: East European
— 38 —
• Waveform
4
IC703
&¡
5
IC703
#∞
3.5Vp-p
1.0 to 1.4Vp-p
16.9344MHz
1.0V/div
50nsec/div
50nsec/div
0.2V/div
0.5
0.5
µ
sec/div
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
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