Sony HCD-DX90 / MHC-DX90 Service Manual ▷ View online
HCD-DX90
21
21
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARDS LOCATION
Note on Schematic Diagram:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Indication of transistor.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• 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
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
c
: digital out
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
B
These are omitted.
C
E
Q
• WAVEFORMS
C
B
These are omitted.
E
Q
1
IC101
yj
CD PLAY MODE
6.4Vp-p
16.9344MHz
1.2Vp-p
2
IC101
ta
CD PLAY MODE
3
IC101
ra
CD PLAY MODE
4
IC101
el
CD PLAY MODE
400nsec/div
approx 200mVp-p
approx 170mVp-p
1
IC401
qa
STOP MODE
3.0Vp-p
32.768kHz
3.4Vp-p
2
IC401
qd
STOP MODE
3
T301
4
TAPE B REC MODE
16MHz
120Vp-p
80.7kHz
1
IC601
oa
STOP MODE
4.8Vp-p
12.5MHz
– BD BOARD –
– MAIN BOARD –
– PANEL BOARD –
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
PANEL Board
LEAF SW Board
HEAD (A) Board
HEAD (B) Board
TRANS Board
CD SWITCH Board
BD Board
DRIVER Board
MOTOR Board
SENSOR Board
MAIN Board
POWER AMP Board
HCD-DX90
22
22
7-2. BLOCK DIAGRAMS
– TUNER/CD SECTION –
: FM
: CD
• Signal Path
• RCH is omitted
: DIGITAL OUT
FM 75
Ω
G
AM
TM601
ANT IN
1
7
IF OUT
8
OSC OUT
5
VT
R601
+B
A+12V
Q602
FM
10
FM OSC
15
VT1 IN
18
VT1
17
PD1
19
PLL
IC651
12
FM/AM IF
7
FM
14
AM OSC
2
VCO STOP
8
IF REQ
6
DO
4
DI
5
CL
3
CE
XIN
1
XOUT
24
X651
4.5MHz
RF IF
AMP
AMP
Q602
CF601
CF602
DO
DI
CL
CE
1
13
3
4
5
5
12
2
14
15
11
6
7
9
RB641
19
AM MIX OUT
IF OUT
9
AM/IF
12
AM OSC
24
VCO STOP
13
IF REQ MUTE
8
AM RF IN
20
AM OSC
22
V REG
23
FM IF
1
AM/FM IF MPX
IC601
11
L OUT
10
R OUT
BUFFER
Q611
LPF601
LPF
18
AM IF IN
IFT601
16
FM/AM DET
R-CH
A
6
TUNED
17
STEREO
3
FM SD ADJ
RV611
RDS DATA
21
RDS INT
20
ST MUTE
22
ST CE
25
ST CLK
28
ST DOUT
26
ST DIN
27
STEREO
23
TUNED
24
MASTER CONTROL
IC401(1/2)
DO
CL
CE
DI
DI
OPTICAL PICK-UP
BLOCK
(KSM-213DAP)
A
B
C
D
E
F
LD
VC
+5V
GND
PD
VR
LD
DRIVE
FOCUS
COIL
TRACKING
COIL
Q101
RF AMP
IC103
VC
12
A
5
B
6
C
7
D
8
E
11
F
10
LD
3
PD
4
IC102
MOTOR/COIL DRIVE
CH1RO
13
CH1FO
14
CH2RO
11
CH2FO
12
CH3RO
18
CH3FO
17
M
M102
SLED
CH4RO
16
CH4FO
15
M
M101
SPINDLE
F+
F-
T+
T-
3
CH1RI
2
CH1FI
6
CH2RI
5
CH2FI
23
CH3RI
24
CH3FI
25
CH4INS
20
MUTE
MDP
26
SFDR
28
SRDR
29
TRDR
31
TFDR
30
FRDR
33
FFDR
32
DIGITAL SIGNAL PROC.
D/A CONV.
IC101
DIGITAL SERVO
60
D OUT
RFAC
51
17
RFI
16
RFO
14
FE
13
TE
22
LD ON
21
HOLD SW
RFDC
43
FE
39
TE
41
SE
40
XLON
14
72
L OUT
DIGITAL
OUT
OPTICAL
CD
DIGITAL OUT
IC201
75
R OUT
5
DATA
B
R-CH
L OUT
L-CH
7
CLOK
6
XLAT
2
SQCK
9
SCLK
20
SCOR
1
SQSO
27
SSTP
66
XTAI
67
XTAO
3
XRST
S101
LIMIT IN
X101
16.9344MHz
CD DATA
33
CD CLK
37
XLT
42
SQ CLK
33
SCOR
19
SQ DATA
32
XRST
43
HOLD
41
TBL ADDRESS
SENSOR
49
T SENS
IC711
48
BU UP/DOWN SW
46
OPEN SW
47
CLOSE SW
44
MTR CNT2
OPEN/CLOSE
S701
BU UP/
DOWN
S711
45
MTR CNT1
MOTOR
DRIVE
9
7
4
2
M
IC701
TURN
M721
(Page 23)
(Page 23)
HCD-DX90
23
23
– MAIN SECTION –
RESET
: FM
: CD
• Signal Path
• RCH is omitted
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
REC
BIAS
BIAS
TRAP
TRAP
R-CH
R-CH
R CH
BIAS
OSC
Q302,303
RV304
Q301
TA+12V
C332,L301
ERASE
HEAD
REC/PB
HEAD
PB EQ
AMP
IC304
RV303
IC302
REC/PB SWITCH
REC
EQ
BIAS
SW
DOLBY
B
NORM
CROM
REC(L)
LEVEL
LEVEL
RV301
40
1
2
3
4
48
46
A
B
70
120
PB
REC
DOL
PAS
PB
REC
36
33
32
38
39
43
BIAS ON/OFF
20
B NORM/CROM/METAL
ALC ON/OFF
15
RM ON/OFF
22
NR ON/OFF
23
REC /PB/PASS
24
LM ON/OFF
25
MS OUT
26
A
B
MD/VIDEO
(AUDIO)
R-CH
L-CH
LOUT
L-CH
J101
L
R
R-CH
PB
HEAD
DECK-B
DECK-A
PB EQ
AMP
IC303
RV302
SWITCH
Q304,305
17
A120/70
PB A/B
16
NORM/HIGH
18
DECK PROC.
IC301
INPUT SELECT
TONE/VOL CONT
IC101
IN2A
40
IN2C
38
IN2D
37
INVOL OUT2
35
IN2B
39
24
VOL OUT2
DATA
21
CLOCK
22
R-CH
1
REF
DBFB
SWITCH
Q503
DBFB
CONT
Q101,102
5
6
7
IC102
MUTE
Q103
Q103
MUTE
CONT
CONT
Q504,505
POWER
AMP
IC501
15
12
11
MUTE
Q581
MUTE
CONT
CONT
Q503,504
MUTE
Q862
MUTE
CONT
CONT
Q861
D841
OVER LOAD
DETECTOR
Q551
OVER HEAT
DETECTOR
Q506,506
+B
D502
PROTECT
DETECTOR
Q821,822
PROTECT
CONT
Q823
PROTECT
SWITCH
Q828,829
RELAY
DRIVE
DRIVE
Q824,825
RY801
J631
PHONES
R CH
R CH
FAN
FAN
DRIVE
Q891,892
L
R
TM801
SPEAKER
91
B SHUT
90
A SHUT
69
B PLAY
68
A PLAY
93
B HALF
67
A HALF
77
PB A/B
A TRIG
DRIVE
CAP MOTOR
DRIVE
Q396,397
Q393,394
B TRIG
DRIVE
Q391,392
CAP MOTOR
SPEED CONT
Q395
A TRIG
57
B TRIG
58
CAP M H/L
59
CAP M CONT
60
TC BLOCK
A120/70
B120/70
A HALF
B HALF
A PLAY
B PLAY
A SHUT
B SHUT
A TRG M+
B TRG M+
CAP M H/L
CAP M+
19
79
TC RELAY
IC401(2/2)
MASTER CONTROL
76
EQ H/N
78
ALC
75
BIAS
74
REC MUTE
73
NR ON/OFF
72
R/PB PAS
71
TC MUTE
70
AMS IN
4
DATA
5
CLK
83
DBFB ON/OFF
DC
BIAS
Q141
+6V
A+12V
84
LINE MUTE
100
STK MUTE
87
RELAY H
82
PROTECT
30
IIC DATA
10
XC IN
11
XC OUT
15
X IN
13
X OUT
32.768kHz
X401
16MHz
X402
BPF 0
BPF 5
P1
P35
G1
G17
FLOURESCENT
INDICATOR TUBE
DISPLAY CONTROL
IC601
F1
F2
LED
DRIVER
Q606-614
D611-615
D617,618
11
FUCTION
KEY
SIRCS
IC603
97 I2C DATA
98 I2CCLOCK
VOL A
1
VOL B
2
SIRCS
100
S601
VOLUME
X601
12.5MHz
+5.6V
REG
Q615
FL601
IC602
50
52
85
.
49
33
20
25
ALL BAND
26
HEADPHONE
3
S617,618
S623-628,630-636
10
10
5
PLAY1-3
EXIST1-3
LED
DRIVER
Q630-635
D630-632
11
GROOVE LED
12
FILE LED
13
BASS SHIFT LED
14
FUNCTION LED
15
REC/PAUSE LED
16
SURROUND LED
LED
DRIVER
Q621-626
LED
DRIVER
Q604
28
POWER LED
POWER
D601
LED
DRIVER
27
TIMER LED
TIMER
SELECT
D602
Q605
17
12
SPEANA
BPF
6
5
4
3
+7V
KEY0
17
FUCTION
KEY
S611-616
S619-621,626,629
KEY1
18
FUCTION
KEY
S637-646
KEY2
19
96 WAKE UP
92 RESET
89
XIN
90
XOUT
MIC
J721
MIC
VOL
RV722
IC722
IC722
29
IIC CLK
18
WAKE UP
7
AC CUT
T971
AC
IN
IN
F973
S951
F971
F972
F974
F975
-V
REG
+5V
REG
Q941
D541
-B
+B
-B
POWER
AMP
D901-904
F1
F2
1
3
+12V
REG
1
3
+9V
REG
1
3
+7V
REG
1
3
CD POWER
SWITCH
+5V
REG
1
3
IC911
Q911,912
IC951
IC921
IC961
IC931
CD D+5V
CD A+5V
RDS D+5V UNSW
AUDIO +5V
A+12V
TC A+12V
MIC A+12V
ST A+12V
TC M+9V
CD M+7V
LED +7V
D906-909
D952
D953
D511
STBY RELAY
81
85
CD POWER
RESET
12
Q501
IC501
T301
D822
IC104
(Page 22)
(Page 22)
HCD-DX90
24
24
CN201
23
(23)
(KSM-213DAP)
TP (AGCCON)
TP
(XPCK)
TP (FEI)
TP
(GND)
TP (RF)
TP (FEO)
TP (TEO)
TP
(VC)
A
B
C
D
E
F
1
2
3
4
5
6
7-3. PRINTED WIRING BOARD – BD SECTION – • See page 21 for Circuit Boards Location.
• Semiconductor
Location
Ref. No. Location
IC101
C-2
IC102
D-4
IC103
B-3
Q101
A-4
(Page 26)
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