Sony MDX-CA790X Service Manual ▷ View online
MDX-CA790X
21
21
7
27
R-CH
R-CH
R-CH
5
11
L-CH
R-CH
BU5.0V
(PAGE 20)
AU 8.3V
TU5V
A
B
BUS
AUDIO IN
PJ210 (1/2)
AUDIO OUT
FRONT
AUDIO OUT
REAR
PJ210 (2/2)
MUTING
Q230
MUTING
Q220
MUTING
Q240
MUTING
Q210
IN-FL
OUT-FL+
1
CN300 (1/2)
POWER AMP
IC300 (1/2)
FRONT L+
IN-FR
IN-RL
IN-RR
BEEP
16
15
SDA
2
SCL
4
11
14
12
22
25
OUT-FL–
9
FRONT L–
OUT-FR+
4
FRONT R+
OUT-FR–
12
FRONT R–
OUT-RL+
2
REAR L+
OUT-RL–
10
REAR L–
OUT-RR+
3
REAR R+
OUT-RR–
11
REAR R–
STB
DIAG
BEEP
AMPSTB
DIAG
5
3
21
9
7
17
19
23
85
70
56
: MD PLAY
: FM
: AM
: BUS AUDIO IN
• SIGNAL PATH
L
R
L
R
•
R-ch is omitted due to same as L-ch.
R
L
15
4
1
14
11
3
13
10 11
E2PVDD
68
E2P_SIO
67
17 16
E2P_CKO
I2C_SIO
I2C_CKO
VOLATT
VCC8.3V
VDD5V
82
DAVN
66
NS_MASK
92
QUALITY
J10
FM/AM
ANTENNA IN
FM/AM
TUNER PACK
TU10
ANT
R-CH
MECH_ATT
(PAGE 20)
L
SDA
R
SCL
11
9
RDS_OUT
11
5
QUALITY
11
18
SCOUT
11
9
SDA
11
10
SCL
I2C_SDA
I2C_SCL
16 MPX
19 CIN
57
79 81
MUTING
CONTROL
Q350, 351
D350
21
INPUT SELECT,
ELECTRICAL VOLUME
IC120
E2PSDA
E2PSCL
64
TUATT
28
7 8
TUATTIN
TUN_MUTE
MUTE_CON
93
6
VSM
S-METER
8
DAVN
ATT 24
SYSTEM CONTROLLER
IC600 (1/2)
RDS DECODER
IC90
Q71
NOISE DET
DISCHARGE
SWITCH
INPUT
SELECTOR
AP2
D2
B2
MUTE
VOLUME
FADER
20
FADER
INPUT
GAIN
IIC BUS
LOGIC
TONE CONTROL/
EFFECT
CIRCUIT
26
25
OUT-RR
SCL
SDA
MUTE
OUT-FR
I2C_SDA
I2C_SCL
I2C_SDA
I2C_SCL
I2C_SDA
I2C_SCL
5
4
OSCI
OSCO
X90
4.332MHz
I2C_SDA
I2C_SCL
5-2.
BLOCK DIAGRAM – MAIN Section –
MDX-CA790X
22
22
5-3.
BLOCK DIAGRAM – PANEL/BUS CONTROL/POWER SUPPLY Section –
MD MECHANISM CONTROLLER
IC7 (2/2)
6
9
2
13
8
57
56
58
76
78
77
74
77
76
78
2
50
14
1 15
30 39
75
TH400
BAT B+
BUS ON SWITCH
Q401, 405
RESET
SWITCH
BUS ON
SWITCH
LIQUID CRYSTAL
DISPLAY
LCD901
65 – 68
1 – 64
COM1 – COM4
SEG1 – SEG64
4
11
1
12
SONY BUS INTERFACE
IC400
OSC
C985, R989
LCD DRIVER
IC901
OSC
29 AMP-REM
27 ANT-REM
34 REG5
33 REG4
37 REG2
30 REG1
DI
CL
CE
D404
33
34
35
40
55
59
96 20
95
5
CN370
MAIN UNIT SIDE
1
CN901
FRONT PANEL
SIDE
S600
(NOSE DETECT)
J370
(REMOTE IN)
LSW801,
LSW901, 904 – 910,
LSW912 – 922,
S902, 903, 911
S902, 903, 911
94
KEY ACTIVE
SWITCH
Q600
27
25
12
13
BU3.3V
D600
X601
27.648MHz
16
15
X602
32.768kHz
2
5
4
6
7
RESET
DATA
CLK
BUS ON
BATT
BUS CONTROL IN
CNJ400
69
RESET
S601
D701
D700
RESET SIGNAL
GENERATOR
IC601
VOLTAGE
CHECK
Q402, 403
LED903, 911, 933, 934,
LED951 – 954,
LSW901, 904 – 910,
LSW912 – 922
ILL 10V
LED DRIVE
Q370
LED801,
LSW801
LSW801
LED801
(DISC SLOL ILLUMINATION)
LSW801
Z
5
AMP-R
CN300 (2/2)
REGULATOR
IC300 (2/2)
6
ANT-R
19
+B
7
ACC
15
TEST
13
TEL-ATT
D407
D406
DATA I/O
RST
CLK
BUS
ON
ON
DATA IN
RST
DATA OUT
CLK-IN
BUS ON
UNISO
UNISI
UNICKO
BUS-ON
D405
(1/2)
D405
(2/2)
UNISO
UNISI
UNICLK
LCDSO
LCDCKO
LCDCE
LINKOFF
BUS_ON
EJECT_OK
UNISO
UNISI
UNICKO
BUSON
DOORSW
NOSESW
UNISO
UNISI
UNICKO
BUS-ON
UNISO
UNISI
UNICKO
BUS-ON
RCIN0
RCIN1
KEYIN0
KEYIN1
KEYACK
ADON
OSCOUT
OSCIN
XOUT
XIN
SYSTEM CONTROLLER
IC600 (2/2)
35
VP
MDMON
OPENREQ
MDMON
OPEN_REQ
RSTX
DOORIND
31
BUIN
21
ACCIN
23
TELATT
22
TESTIN
29
MDON
19
RESET
42
SYSRST
51
BU_IN
93
MD_ON
D500
LO_6V
+2.5V
REGULATOR
IC3
REGULATOR
CONTROL
Q505
69
MDMON_CHECK
SERVO3.3V
70
MDON_CHECK
+5V
REGULATOR
Q60
BATTERY DETECT
Q404
LEVEL SHIFT
Q360
ACCESSORY
CHECK
Q361
83
SIRCS
REMOTE CONTROL
RECEIVER
IC971
AU8.3V
TU5V
BAT B+
L2.5V
+5V
REGULATOR
Q504
LO_6V
DRIVER5V
31 REG3
SERVO3.3V
+3.6V
REGULATOR
IC700
BU3.3V
BU5.0V
MDX-CA790X
23
23
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
5-4.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– SERVO Section –
no mark : MD PLAY
– MAIN/KEY Section –
no mark : FM
– SERVO Section –
no mark : MD PLAY
– MAIN/KEY Section –
no mark : FM
〈〈
〉〉
: MW
[
] : LW
(
) : MD PLAY
• 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.
E
: MD PLAY
F
: FM
f
: AM (MW/LW)
L
: BUS AUDIO IN
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Circuit Boards Location
SUB board
SENSOR board
SERVO board
MAIN board
MINI JACK board
KEY board
MDX-CA790X
24
24
5-5.
SCHEMATIC DIAGRAM – SERVO Section (1/2) –
•
See page 31 for Waveforms.
•
See page 16 for IC Block Diagrams.
R13
C22
C46
C45
C40
C31
C34
R16
R15
C26
C25
R14
TP34
TP33
C20
R10
R9
R11
R12
C39
R19
R18
R17
R23
R24
C42
R20
R22
R21
C43
C38
C47
C44
TP25
TP35
TP26
C11
C12
R7
TP12
TP8
TP9
TP11
TP7
TP10
TP13
TP14
C6
C8
TP22
TP5
R1
C4
Q1
C17
TP27
TP32
C15
C13
R2
R3
C18
C29
C16
C35
C27
C32
R6
C5
TP21
TP20
TP19
TP18
TP17
TP16
C33
R40
R39
C37
C36
C59
C51
C48
C52
C56
C57
C53
R30
R28
TP67
TP71
TP72
TP68
C50
CN2
CN3
IC2
C23
IC3
IC4
IC1
BP3
BP2
BP1
R5
R4
C58
R38
X1
M901
M902
M903
C21
C55
C54
R29
C49
C19
56k
0.01
0.1
0.1
1
0.1
0.1
2.2k
2.2k
0.01
0.01
2.2k
(SE)
(TE)
0.068
4.7k
33k
13k
13k
100p
680k
100k
10k
150
1k
0.47
1k
1M
3.3k
0.015
0.1
22 10V
0.1
(BTM)
0.1
0.022
470k
22
10V
0.1
(IOP)
(PD)
4.7k
0.001
MSB709-RT1
0.0022
(PEAK)
(RF)
0.01
0.1
10
10
1
0.1
0.022
100
6.3V
0.1
0.1
470k
0.0068
0.1
1k
1k
0.47
0.01
47
4V
4V
0.01
0.1
0.1
100p
0.1
0.01
10k
10k
(M0)
(M1)
(M3)
(M2)
2.2
20P
10P
BH6519FS-E
0.1
R114N251B-TR
CXD2667R
CXA2523AR
47
100
47
4V
4V
0
L3
10
µ
H
L4
10
µ
H
L2
10
µ
H
22.57MHz
0.0047
100p
100p
47
2.2
0.0047
Z1
Z2
Z3
Z4
Z5
Z6
Z7
Z8
Z9
Z10
Z11
Z13
Z14
Z15
Z16
Z17
F
C
S
+
S
F
D
R
F
F
D
R
S
P
F
D
T
R
K
+
FFDR
TFDR
TRDR
S
P
D
L
+
S
L
E
D
-
SPDL-
SPDL+
SLED+
SLED-
LOAD_END
LIMIT
DISC_IN
LO-
LO+
FRDR
S
R
D
R
S
F
D
R
S
P
R
D
S
P
F
D
S
P
R
D
S
L
E
D
+
F
C
S
-
F
R
D
R
T
R
K
-
S
P
D
L
-
S
R
D
R
X
IN
T
A
B
C
D
TRK+
FCS+
FCS-
TRK-
J
J
B
B
A
A
I
I
F
F
ILCC
ILCC
MON
MON
A
1
A
2
A
3
A
4
A5
A6
A7
A
8
A
9
A1
A2
A3
A4
A
5
A
6
A8
A
9
T
FD
R
T
R
D
R
A7
SQSY
SRDT
XLAT
SCLK
SWDT
E
B
I
VCC
C
J
D
F
VC
TRK+
TRK-
FCS+
FCS-
A
ILCC
VEE
VR
LDG
MON
NC
VDC0
MNT0
MNT1
MNT2
MNT3
SWDT
SCLK
XLAT
VSC0
SRDT
SENS
XRST
SQSY
XTSL
DATAI
VDIOSC
OSCI
OSCO
VSIOSC
DAVSSL
VREFL
AOUTL
DAVDDL
DAVDDR
AOUTR
VREFR
DAVSSR
VS
C1
VD
C1
M
TFLG
L
DOUT
XINT
DADT
LRCK
XBCK
FS256
VDIO1
A03
A02
A01
A00
A10
A04
A05
A06
A07
A08
A09
A11
VSIO1
XOE
XCAS
XRAS
XWE
DVD
D
DVSS
D
1/GFS
D0/FOK
D2
D3
VDC2
VSC2
MVCI
DD
IN
D
DO
UT
ASYO
A
SY
I
AV
D
1
BIAS
RFI
A
VS1
P
CO
FIL
I
FILO
CL
TV
PEAK
BOTM
ABCD
FE
AUX1
VC
ADIO
ADRT
AVD2
AVS2
ADRB
S
E
TE
AUX
2
DCH
G
AP
C
ADFG
VDIO2
VSIO2
F0CNT
XLRF
CKRF
DTRF
APCREF
LDDR
TRDR
TFDR
VDC3
FFDR
FRDR
FS4
SRDR
SFDR
SPRD
SPFD
FGIN
TEST1
TEST2
TEST3
VSC3
MTFLGR/TRK
VDIO3
VSIO3
SP-
SP+
SL+
SL-
LO+
LO-
C-SW
GND
IN-LIMIT
E-SW
GND
VD
D
V
OU
T
N
C
CE
(ABCD)
(FE)
PEAK
RF
RF
AGC
AG
CI
CO
M
PO
CO
PM
P
ADDC
O
PO
OPN
M
OR
FI
R
FO
M
O
RFO
WBLADJ
TE
CSLED
SE
ADFM
ADIN
ADAGC
ADFG
AUX
FE
ABCD
BOTM
TEM
PI
TEM
PR
SW
DT
SCLK
XLA
T
XSTBY
VREF
EQA
DJ
3T
ADJ
VCC
I
J
VC
A
B
C
D
E
F
PD
APC
APCREF
(A)
(B)
(I)
(J)
(C)
(D)
(E)
(F)
PG
ND4
GND
IN4R
IN4F
VM
4
O
UT4F
OU
T4R
VM
34
O
UT3R
PG
ND
3
OUT3F
VM
3
IN3F
IN
3R
PSB
VG
V
D
D
IN
1R
IN1F
VM
1
OU
T1F
PGND
1
O
UT1R
VM
12
OU
T2R
PGND
2
O
UT2F
VM
2
IN2F
IN2R
CAP
A+
CAP
A-
(SP-BLK)
(SP+RED)
(LO+RED)
(LO-BLK)
(SL+RED)
(SL-BLK)
(CHASSIS)
GFS/SLD
(1/2)
SPINDLE/SLED
MOTOR RIVE,
FOCUS/TRACKING
COIL DRIVE
+2.5V REGULATOR
MD DSP
RF AMP,FOCUS/TRACKING
ERROR AMP
AUTOMATIC
CONTROL
POWER
(LIMIT)
(CHUCKING DETECT)
(LOADING DETECT)
(SPINDLE)
(SLED)
(LOADING)
GND
F0CNT
FOK
(Page 25)
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