Sony MDX-C800REC Service Manual ▷ View online
33
33
3-3. BLOCK DIAGRAM — TUNER SECTION —
MDX-C800REC
2
1
20
57
4
6
8
9
5
2
3
7
1
ADL
R-CH
R-CH
DAL
2
59
93
1
15
120
100
105
16
2
8
8
52
78
78
4
5
9
10
10
11
TUNER UNIT
TU1
9
13
12
4
79
96
40
7
18
17
70
71
51
30
30
10
11
11
3
5
13
15
12
20
21
18
24
23
30
28
29
27
26
85
32
16
60
92
50
53
10
11
14
19
8
11
15
22
4
X1
4.332MHz
X701
3.686MHz
73
74
X700
32.768kHz
1
MD
SECTION
5
DISPLAY
SECTION
SECTION
2
MD
SECTION
MUTE
Q1
MUTE
Q2
MUTE
Q103
MUTE
Q103
MUTE
CONT
Q703-705
BUF
Q4
QUAL DET
IC2
TUNER
MUTE
Q3
NS MASK
Q7
POWER
CONT
Q651
BEEP
DRIVE
Q700
BATT
CHECK
IC703
5V REG
IC284
ACC
CHECK
Q701
POWER
CONT
Q823,824
REG
Q821
TEL
ATT
ATT
Q822
9
7
17
19
R-CH
MD ATT
SERVO ON
R-CH
R-CH
L
R
L
R
-5
-6
-1
-2
-3
-4
MUTE STBY
FRONT
AUDIO
OUT
L
R
BUS
AUDIO
IN
REAR
AUDIO
OUT
POWER AMP
IC104
CNP820
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR+
RR-
BATT
COM8V
BATT
BATT
AMP-R
ANT-R
ILL
PARKING
ACC
ATT
BU5V
13
14
7
15
5
6
16
12
11
10
9
1
2
4
3
R-CH
SEIL
SSL
SSR
FL
FR
RL
RR
SWL
MUTE
AMP MUTE
AMP ON
XO
XI
TU ON
BEEP
ILL
XOA
XIA
AGC
POWER ON
PARKING
TEL ATT
LOW+B
CHK
SEIR
SE 3L
SE 3R
MPX
MPIN
AMIF
AM
SDL
SCL
SM
EV MUTE
NS MASK
TU MUTE
QUALITY
QUALITY
VSM
MPT
LV
MPX
MPX
DATA
CLK
OSCI
OSCO
DAVN
MPTH
FM
ANT
ANT
AM
ANT
ANT
MPX
AM IF
S-
METER
AM
DET
RDS
DAT
CKL
FM AGC
SW SHIFT
DATA
DATA
CLK
CLK
FM AGC
SW SHIFT
SW SHIFT
DAVN
R-CH
R-CH
S/P SIG
MUTE
Q102
MUTE
Q102
BZ800
BATT
BATT
TU5V
TU8V
POWER SUPPLY
IC280
STB
AMP+B
ANT +B
COM8V
COM8V
BU5V
TU ON
TU ON
VCC
TU 5V
TU 8V
R-CH
J1
(ANTENNA)
COM8V
BU5V
D5V
S/P5V
ELECTRONIC VOLUME
IC102
SYSTEM CONTROL
IC700(2/3)
IIC
EEP
IIC
DAT
CKL
EEP
04
RDS DEM.
IC1
CNP101
CNP101
(Page 32)
(Page 34)
(Page 32)
34
34
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
MDX-C800REC
AN0
LINK OFF
SI
SCK
SO
BUS ON
BU IN
NMI
RES
RES
A OUT
SEL
A
C
B
ILL ON
BOOT
RX/
DOOR SW
TX/
LCD DATA
105
50
A IN
DIMMER
87
GREEN
84
AAMBER
85
17
8
PA0
24
97
14
PA1
25
101
10
PA2
26
98
11
PA3
27
EXTAL
FLS PON
RSTX
HSTX
BU IN
SYS RST
BUS ON
SI
SO
UNI
CLK
SIRCS
RAMBU
DP BOOT
DOOR SW/
RXD
RXD
TXD
RC IN1
RC IN0
KEY IN0
KEY IN1
AD ON
LSW900-911
921-930
921-930
KEY AVK
FLASH WHT
PACK IND
NOSE SW
86
XTAL
85
38
49
82
81
52
57
62
60
12
CEO
66
98
CLK
64
99
CEI
70
100
GREEN
85
RED
86
CEI 98
CL 99
DI
CEO
CL
DI
100
X650
18.432MHz
LED951-956
LSW900-911,
924-930
LOQUID CRYSTAL
DISPLAY
LCD900
DIMMER
CONT
Q950,952
LED921-923
LED
DRIVE
Q944,945
COLOR
SEL
Q942,943
9
81
12
13
72
49
46
47
35
76
62
RE IN0
64
102
101
13
6
10
5
6
8
7
4
2
3
1
12
77
86
90
7
8
20
9
21
11
2
3
1
6
4
22
24
69
BATT
CHECK
Q781
LOW
BATT
DET
SRAM
RESET
IC702
IR
RECEIVE
IC960
LED
DRIVE
Q833,834
RE IN1
66
ROTARY
ENCODER
RE900
KEY
ACTIVE
Q702
KEY IN
MATRIX
POWER
CONT
Q702
RESET
IC701
BUF
IC651
REG
Q835,836
BUFFER
Q782,783
MD SECTION
4
3
5
TUNER
SECTION
MD SECTION
TXD
RXD
LCD10V
S800
(RESET)
CN780
BUS INTERFACE
IC780
Q780
(BUS CONTROL IN)
SYS RST
BUS IN
BUS ON
UNI SI
UNI CK
UNI SO
Q784
BATT
BU5V
BATT
KEY
BOARD
S700
(NOSE SW)
LCD10V
BATT
SYSTEM CONTROL
IC700(3/3)
J700
(REMOTE IN)
TEST
TERMINAL
TXD
04
ACT+B
BU5V
LED800
FXD
BOOT
LCD10V
CN802
2
1
3
4
LCD DRIVE
IC980
SPECTRUM ANALYZER
IC652
DISPLAY CONTROL
IC650
LCD DRIVE
IC970
S/P SIG
LCD
UNI
(Page 33)
(Page 32)
(Page 32)
35
35
tuner unit
(TU1)
(TU1)
COMPUTER board
DIGITAL board
CONNECTION board
SENSOR board
KEY board
RELAY board
SERVO board
MAIN board
3-5. CIRCUIT BOARDS LOCATION
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams
• 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.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• 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.
• Signal path.
F
: FM
f
: MW
J
: MD
For printed wiring boards
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
f
: internal component.
• b
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
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: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
• Waveforms
(MODE:PLAY)
(SERVO/COMPUTER BLOCK)
1
2
3
IC440
ek
(RF)
1.4Vp-p
Approx.
0.5Vp-p
0.5Vp-p
4
5
6
7
8
IC400
wg
(LRCK)
IC400
wh
(XBCK)
IC520
ea
(CAPA+)
4.8Vp-p
4.8Vp-p
4.4Vp-p
4.4Vp-p
3.4Vp-p
24µsec
0.35µsec
2.8µsec
IC440
wh
(TE)
Approx.
0.3Vp-p
0.3Vp-p
IC440
ef
(FE)
IC520
es
(CAPA–)
2.8µsec
IC560
os
(XO)
3.68MHz
36
36
SERVO BOARD (SIDE A)
1-672-770-
04
R524
C534
C533
R517
CN510
R512
R416
R415
R513
C510
OVER WRITE
HEAD
C516
R516
C517
C426
IC402
C513
C527
R523
C530
R522
C528
C529
Q520
Q512
Q511
Q510
Q440
Q441
Q443
Q444
Q446
Q445
IC400
IC440
1
16
32
IC510
1
10
1
8
20
11
8
5
1
4
17
CN400
CN401
R440
R400
R442
R443
R444
R441
C441
C425
R447
C443
R446
R461
R458
R452
R453
R451
C445
R450
R480
R479
C472
R478
C458
R470
C459
R469
C457
R467
L444
C474
R483
R482
C469
CN440
Q442
Q447
R471
R521
C524
C520
R520
R472
R474
R473
C467
R476
C470
R484
R486
R485
R485
C473
FB443
FB444
C462
C475
C471
R455
C418
R402
C414
R456
C450
R457
R460
R459
R454
C447
C446
R462
R463
R465
R465
R487
C452
C453
R404
R448
R449
R449
C460
L442
L443
R466
C444
C454
R401
C415
R464
C440
L440
RB400
RB402
IC401
13
1
17
12
51
1
35
1
50
2
24
1
25
75
76
100
50
26
51
37
48
1
1
5
2
3
12
36
25
24
13
4
1
5
8
A
B
C
D
E
F
1
2
3
4
5
6
7
15
SENSOR BOARD
CN550
6
COMPUTER BOARD
CN560
5
MAIN BOARD
CN100
3
IC520
OPTICAL
PICK-UP
KMS-263A
D441
D440
D511
D510
D520
S
S
D-GND
OWH
IC442
IC521
CN520
1
21
3-6. PRINTED WIRING BOARD — SERVO SECTION —
MDX-C800REC
Ref. No.
Location
D440
F-5
D441
F-3
D510
B-6
D511
B-6
D520
C-4
D521
C-5
IC400
E-5
IC401
D-5
IC402
C-7
(IC403)
F-6
IC440
F-3
IC442
F-1
IC510
A-7
IC520
D-2
(Q400)
F-4
Q440
F-6
Q441
F-6
Q442
E-1
Q443
E-1
Q444
F-2
Q445
E-1
Q446
E-1
Q447
F-1
Q510
B-6
Q511
B-6
Q512
B-7
Q520
C-4
• Semiconductor
Location
(
) : SIDE B
(Page 41)
(Page 42)
(Page 44)
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