Sony CMT-C7NT / HCD-C7NT Service Manual ▷ View online
45
45
HCD-C7NT
C
B
These are omitted.
E
Q
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
a
: Through hole.
•
Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
• Indication of transistor.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 V or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Circuit Boards Location
6-1. Note For Printed Wiring Boards and Schematic Diagrams
(In addition to this, the necessary note is printed in each block)
SECTION 6
DIAGRAMS
• Waveforms
B
These are omitted.
C
E
Q
POWER board
HP board
AUDIO board
JACK board
PANEL board
30.5
µ
s
3.1 Vp-p
50 ns
3.2Vp-p
29.5
µ
s
4.0Vp-p
1.3Vp-p
0.2Vp-p
1.6Vp-p
3.5Vp-p
176.4kHz
1
IC101
us
XTAO
2
IC101
ek
(RF)
3
IC101
ef
(FE)
(Play mode)
6
IC501
eh
XT2
5
IC151
o;
(FS4)
VOLT/DIV : 1V AC
TIME/DIV : 20 nsec
TIME/DIV : 20 nsec
9
IC1005
wd
(XI)
4.8 Vp-p
166 ns
q;
IC1004
wd
(XI)
VOLT/DIV : 2V AC
TIME/DIV : 100 nsec
TIME/DIV : 100 nsec
3.2 Vp-p
99 ns
qa
IC1003
qa
XOUT
VOLT/DIV : 1V AC
TIME/DIV : 40 nsec
TIME/DIV : 40 nsec
3.8 Vp-p
83ns
qs
IC1002
rj
(XTAL)
VOLT/DIV : 1V AC
TIME/DIV : 40 nsec
TIME/DIV : 40 nsec
VOLT/DIV : 1V AC
TIME/DIV : 40 nsec
TIME/DIV : 40 nsec
VOLT/DIV : 1V AC
TIME/DIV : 20
TIME/DIV : 20
µ
sec
4
IC101
wh
(TE)
(Play mode)
7
IC501
ek
X2
8
IC1007
wk
X2 (XTO)
83 ns
4.1Vp-p
VOLT/DIV : 1V AC
TIME/DIV : 40 nsec
TIME/DIV : 40 nsec
4.3 Vp-p
80 ns
VOLT/DIV : 1V AC
TIME/DIV : 40 nsec
TIME/DIV : 40 nsec
BD (CD) board
AMP POWER board
UCOM board
SW board
CONNECTOR board
BD (MD) board
MD DIGITAL board
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Abbreviation
KR
: Korean model
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD (ANALOG)
c
: CD (DIGITAL)
p
: PB (MD)
l
: REC (MD)
I
: DIGITAL IN (OPTICAL)
E
: PB (TAPE)
G
: REC (TAPE)
J
: USB
• Abbreviation
KR
: Korean model
J
46
46
HCD-C7NT
6-2. Block Diagram – CD Servo Section –
• Signal Path
: CD
OPTICAL PICK-UP
BLOCK
OPTIMA-720L1E
VA
9
VB
VE
VF
LD
1/2VCC
VCC
+5V
GND
MD
VR
LD
DRIVE
Q101
RF AMP
IC103
VC
27
VFC
25
B
7
A
6
C
8
D
9
E
10
F
11
LD
1
PD
2
VC
IC102
MOTOR/COIL DRIVER
VO1(+)
14
VO1(-)
13
12
11
15
16
M
M
FEED
MOTOR
18
17
M
SPINDLE
MOTOR
F+
FOCUS
COIL
TRACKING
COIL
F-
TR+
TR-
2
OPIN1(+)
3
OPIN1(-)
5
6
27
26
23
MDP
25
SRDR
30
SFDR
29
TRDR
32
TFDR
31
FRDR
34
FFDR
33
DIGITAL SIGNAL PROCESSOR
IC101
DIGITAL SERVO,
D OUT
RFAC
50
28
RFDCO
15
26
RFAC
16
FE
18
TE
12
SW
17
FEI
29
RFDCI
RFDC
43
FE
39
TE
41
SE
VCC
RV101
40
4
DATA
DATA
6
CLOK
CLK
5
XLAT
XLT
76
SQSO
SQSO
7
SENS
SENS
26 SSTP
19 TE_BAL
2
XRST
69
XTSL
MASTER CONTROL
IC501(1/2)
CXD-DATA
7
8
SCLK
77
SQCK
SCLK
15
SCOR
SCOR
71
XTAI
72
XTAO
CXD-CLK
8
CXD-XLT
11
SUBQ
15
SENSE
14
SCLK
17
SCOR
95
CTRL1
CTRL1(1-2)
18
LDON
LDON
13
BDRST
XRST
29
27
26
7
9
4
2
PWM1
PWM1
12
PWM2
PWM2
19
PWM3
PWM3
20
VO2(+)
VO2(-)
VO4(+)
VO4(-)
VO3(-)
VO3(+)
OPIN2(+)
OPIN(2-)
OPIN4(+)
OPIN4(-)
OPIN3(-)
RFC
SWITCH
Q102
+3.3V
REG
Q103,D101
X201
33.8688MHz
S5
LIMIT
IN
SWITCH
+5V
+5V
+3.3V
8
4
6
2
3
7
10
5
1
SD+
SD-
SP+
SP-
SW1
30
SW2
31
SW3
32
SW4
S1
(Disc IN/8cm Disc Detect )
S2
(12cm Disc/12cm Disc Eject End Detect)
S3
(Disc/Chacking/Release Detect)
S4
(8cm Disc Eject End Detect)
33
IC1102
LOADING MOTOR DRIVER
RIN
FIN
OUT1
OUT2
LODPOS
LODNEG
M902
(LOADING)
M903
M904
A
64
D OUT
USB
SECTION
(Page 49)
47
47
HCD-C7NT
6-3. Block Diagram – MD Servo Section –
• Signal Path
: PB (MD)
: REC (MD)
: CD
: USB
I2C-DATA, I2C-CLK, I2C-BUSY, PDOWN
F
C
B
D
A
E
I
J
J
I
B
A
C
D
E
F
DETECTOR
J
I
A
B
C
D
D
E
F
LD
PD
LASER DIODE
ILCC
PD
OPTICAL PICK-UP
(KMS-262E)
Q121, 122
AUTOMATIC
POWER CONTROL
APC
PD
APCREF
AT
AMP
B.P.F.
WBL
ADFM
ADIN
ADFG
ABCD
AMP
ABCD
FE
TE
SE
F0CNT
WBL
3T
EQ
COMMAND
SWDT
SCLK
XLAT
RFO
RF AGC
& EQ
AGCI
EQ
RF
IC101
RF AMP,
FOCUS/TRACKING ERROR AMP
TEMP
MORFO
MORFI
3T
WBL
AUX
PEAK
BOTM
IC141
FOCUS/TRACKING COIL DRIVER,
SPINDLE/SLED MOTOR DRIVER
OUT4F
OUT4R
M701
(SPINDLE)
OUT2F
OUT2R
M702
(SLED)
OUT1F
OUT1R
OUT3F
OUT3F
OUT3R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
IN4R
IN4F
IN2F
IN2R
IN1F
IN1R
IN3F
IN3R
MOD
SPFD
SPRD
APCREF
SFDR
SRDR
FFDR
FRDR
TFDR
TFDR
TRDR
PSB
PWM GENERATOR
FROM CPU
INTERFACE
IC151 (2/2)
DIGITAL SERVO
SIGNAL PROCESSOR
RECP
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
XLRF
CKRF
DTRF
XLAT
SCLK
SWDT
FILI
PCO
CLTV
FILO
EFMO
ADDT
DADTI
IC151 (1/2)
TX
ASYO
ASYI
RFI
SCTX
HR901
OVER WRITE HEAD
ADFG
F0CNT
SPFD
SPRD
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
DIN0
DOUT
IC151 (1/2)
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
INTERNAL BUS
DADT
XBCK
LRCK
FS256
OSCI
OSCO
DQSY
SQSY
XINT
SENS
SRDT
SWDT
SCLK
XLAT
MNT0
MNT1
MNT2
MNT3
SWDT
SCLK
XLAT
SHOCK (MNT1)
XBUSY (MNT2)
DIG-RST
SQSY
DQSY
LDON
WRPWR
MOD
XINT
SENS
SRDT
LOAD-IN
LOAD-OUT
RIN
FIN
OUT1
OUT2
VREF
IC1011
LOADING
MOTOR DRIVER
M703
(LOADING)
DQ1 – DQ4
A0 – A9
D0 – D3
A00 – A10
XOE
XWE
XRAS
XCAS
OE
WE
RAS
CAS
IC152
D-RAM
DIN1
IC1003(1/2)
MASTER CONTROLLER
HF MODULE
REFLECT
PROTECT
LOAD-LO
WP
SDA
SCL
EEP-WP
XOUT
XIN
SCL
SDA
M+7V
63
13
53
50
45
58
59
I2C-DAT 28
I2C-CLK
I2C-DATA
I2C-CLK
27
I2C-BUSY
I2C-BUSY
21
47
LIMIT-IN
OUT-SW
S101(LIMIT IN)
S103(OUT)
S104(PLAY)
S105(REC)
PLAY-SW
REC-SW
XBCKI
LRCKI
11
9
8
4
1
2
3
48
47
46
40
33
38
37
36
32
35
34
26
28
18
17
16
20
12
30
29
5
6
7
10
Q101
LASER ON
SWITCH
LD/PD
AMP
I-V
AMP
I-V
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RF AMP
B.P.F.
PEAK &
BOTTOM
6
8
92
91
88
89
86
85
81
80
83
13
67 65 66 75 74 63 64
82
27
25
21
23
12
10
14
15
19
18
29
30
3
4
16
M
M
M
AUTOMATIC
POWER
CONTROL
DIGITAL SERVO
SIGNAL
PROCESS
ANALOG MUX
A/D CONVERTER
SERIAL/PARALLEL
CONVERTER,
DECODER
AUTO
SEQUENCER
V-I
CONVERTER
Q131 - 134
HF MODULE
SWITCH
100
60
59
62
61
53
54
57
78
79
94 93
10
12 11
14
9
8
5 6 7
1 2 3 4
43
47
16
29
27
28
26
21
20
19
23
24
22
25
17
46
44
22
4
5
23
15
68
ADIP
DEMODULATOR/
DECODER
SPINDLE
SERVO
COMPA-
RATOR
PLL
FILTER
SUBCODE
PROCESSOR
EFM/ACIRC
ENCODER/
DECODER
SHOCK
PROOF
PROOF
MEMORY
CONTROLLER
ATRAC
ENCODER/
DECODER
CPU
INTERFACE
MONITOR
CONTROL
CONTROL
16
43
48
46
42
18
23
49 30
31 51
55 54
29
XRST
CLOCK
GENERATOR
48, 49, 50, 51
2, 3, 24, 25
34 – 31,
36 – 40, 45
8 – 12,
15 – 19, 21
65 64
9
10
7
VCC 1
4
2
M
Q1002
REFERENCE
VOLTAGE SWITCH
DOUT
MCLK
DADTI
XBCKI
LRCKI
DIN0
DIN1
4
3
-A
LD+3.3V
IC102
WAVEFORM
SHAPER
X1003
10MHz
10MHz
8
9
X1008
32kHz
32kHz
56
52
57
7
6
5
IC195
EEPROM
LD+3V
X171
90MHz
IOP
3
1
+5V
LD+3.3 V
+3.3V
REG
IC190
USB
SECTION
VC
VC
VC
15
14
TEMPI
TEMPR
E
F
MAIN
SECTION
D101
TEMP
SENSOR
IC181, Q181 182
OVER WRITE
HEAD DRIVE
PDOWN
PDOWN
17
S102(REFLECT
→
PROTECT)
Q1001
BUP+3.3V
1
3
IC1009
RESET
87 IOP
10
S-RST
11
(Page 49)
(Page 48)
48
48
HCD-C7NT
6-4. Block Diagram – Main Section –
: FM
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
: PB(MD)
: REC(MD)
: PB(TAPE)
: REC(TAPE)
: DIGITAL IN
: USB
TUNER PACK
TC
DAOUT-L
REC-L
38
IC301
SOUND PROCESSOR
35
REC
25
OUT
L-CH
R-CH
CL
DO
DI
CE
TUNED
STEREO
MUTE
R-CH
IC501 (2/2)
MASTER CONTROL
IC601
FL DRIVER
FL601
FLUORESCENT
INDICATOR TUBE
52
PRE-MUTE
56
SPK-RELAY
AC-CUT
RESET 34
CD/MD
37
ST
39
LAT
CLK
DATA
22 21
Q341
MUTING
Q331
MUTING
MUTING
SWITCH
SWITCH
Q202
H/P
DETECT
Q232
Q991
RELAY
DRIVER
RESET
SWITCH
Q941
VOL-DATA
VOL-CLK
VOL-CE
64
63
PLL-CLK
PLL-DI(ST UCOM)
PLL-DO(UCOM ST)
PLL-CE
TUNED
STEREO
ST-MUTE
43
45
44
46
49
48
47
50
96
+
–
5
IC302
HEADPHONE AMP
6
7
R-CH
J103
PWR-RELAY
PHONES
SPEAKER
IN
OUT
TAPE
REC-MUTE
54
91
D982-985
D851
-30V
REG
B+
SWITCH
Q911,912
CD+5V
D971-974
D981
CD+10V
ST+10V
T900
MAIN
TRANSFORMER
T901
SUB
TRANSFORMER
+B
-B
+10V
REG
IC901
3
1
B
AC IN
R-CH
J102
J101
3
1
IC941
AC-DET
D942
RESET
USB
SECTION
D
USB
SECTION
C
F
PDOWN
USB
SECTION
D961-964
+5V
REG
IC905
3
1
+5.6V
REG
IC907
3
2
1
MD H/M+5V
CDM+5V
+7V
REG
IC903
3
1
CD+7V
PRE+7V
+5V
REG
IC902
3
1
MDM+5V
FL -30V
VF
VF
VF
VF
+4V
REG
IC906
RY991
3
1
MD-PWR
D992
D993
D921
D941
R941
C941
D926
D927
D925
D923
D924
69
FAN-HIGH 66
BDPWR 28
PCPON
70
92
R-CH
R-CH
EXT-ON
EXT-ON
Q971
+5V
REG
IC904
3
1
Q311
D343
26
B-O
27
B-I
28
V-O
DBFB
SWITCH
Q102
SWITCH
Q601
SWITCH
Q602
SWITCH
62
20
+5V
REG
IC908
3
1
LED+5V
A+5V
FAN
DRIVER
Q103
FAN SPEED
DRIVER
Q104,105
(D.C. FAN)
BACKUP
+5V/+2.7V
SYS +5V
SUB +5V
MD D+3.3V
BUP +3.3V
BT921
(RECHARGEABLE)
A-MUTE
A-MUTE
RELAY
AMP-L
35
36
39
38
5
1
4
6
2
16
14
13
15
3
X502
32.768kHz
32.768kHz
X501
20MHz
20MHz
SCL
SDA
57
HELP
XT1
XT2
X1
X2
FL-DATA
FL-CLK
FL-CE
12
DIG0
16G
DIG15
01G
DIG1
ı
DIG14
15G
ı
02G
SEG0
ı
SEG34
P01
ı
P35
61
FL-RST
SDATA
SCK
CS
RST
P1
P OFF
I2C-CLK
I2C-DATA
I2C-DATA, I2C-CLK, I2C-BUSY, PDOWN
MD
SECTION
77
FUNCTION
KEY
S602-605
KEY1
78
FUNCTION
KEY
S606-609
KEY2
79
FUNCTION
KEY
S610-614
KEY3
94
1
IC602
REMOTE
SENSOR
SENSOR
SIRCS
93
KEY-RM
I2C-DATA, I2C-CLK, I2C-BUSY,
PDOWN
I2C-BUSY
SIRCS/
POWERKEY
DETECT
Q221-224
72
Q604
D601
(STANDBY)
D602-610
(KEY BACK LIGHT)
ON/STANDBY
11
ı
1
64
ı
62
•
6
ı
19
21
ı
55
59
ı
33
31
ı
24
•
5
20
3
-B
5
+B
7
8
2
L
CN208
LED
DRIVER
Q605
D611-612
(NET-MD)
(NET-MD)
LED
DRIVER
ANTENA
FM75
Ω
/FM300
Ω
AM
ı
`/1
M901
17 18
Q101
MUTING
RDS DATA
RDS INT
RDS DATA
RDS INT
AEP,UK
AEP,UK
(Page 49)
(Page 49)
(Page 47)
(Page 49)
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