Sony MDX-C6500X Service Manual ▷ View online
25
• MAIN BOARD IC801 MN101C49KTB (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
VREF–
—
Ground for A/D converter power supply
2
S METER
I
S meter voltage detect signal input
3
FM AGC
I
FM auto gain control signal input
4
KEY IN1
I
KEY signal input
5
KEY IN0
I
KEY signal input
6
DSTSEL
I
Not used.
7
RC IN0
I
Rotary commander signal input
8
FUNC SEL
I
Model function selection pin
9
NIL
—
Ground
10
VREF+
—
A/D converter power supply
11
VDD
—
Power supply (+5 V) input pin
12
OSC OUT
O
High speed clock signal output (18.432 MHz)
13
OSC IN
I
High speed clock signal input (18.432 MHz)
14
VSS
—
Ground for power supply
15
XI
I
Low speed clock signal input (32 kHz)
16
XO
O
Low speed clock signal output (32 kHz)
17
MMOD
—
Not used. (Fixed at “L”.) Memory mode select signal input
18
RC IN1
I
Rotary commander shift key signal input
19
SYSRST
O
System reset signal output
20
BUS ON
O
Bus on control signal output
21
LCD DATA
O
LCD serial data signal output
22
LCD CE
O
LCD chip enable signal output
23
LCD CLK
O
LCD serial clock signal output
24
ILL ON
O
Illumination power supply control signal output
25
DOOR IND
O
Control signal output for power on sub panel when open to front panel
26
KEY ACK
I
Key active interrupt detect signal input
27
NOSE
I
Front panel attachment detection input
28
BU IN
I
Back up power supply setect signal input
29
SIRCS
I
Remote control signal input
30, 31
NC
—
Not used. (Fixed at “L”.)
32
RAM
—
Not used.
33
RESET
I
Reset signal input
34
NC
—
Not used.
35
BEEP
O
Beep signal input
36
NC (FUNC SEL)
I
Model function selection pin
37
NC (FUNC SEL)
I
Model function selection pin
38 – 40
NC
—
Not used.
41
UNI CLI
I
Bus system serial clock signal input
42
UNI SO
O
Bus system serial interface signal output
43
UNI SI
I
Bus system serial interface signal input
44
UNI CLO
O
Bus system serial clock signal output
45
SDA
I/O
I2C bus serial data signal input/output
46
NC
—
Not used.
47
SCL
O
I2C bus serial clock signal output
48, 49
NC
—
Not used.
50
LOCK
I
Check when remove to lock of MDNO CLV SERVO
51 – 63
NC
—
Not used.
64
ACC IN
I
Accessory power supply voltage detection input
65
TEL MUT
I
Telephone attenuate detect signal input
66
TEST IN
I
Test mode setting detect first stage signal input
67
ANT CUT
—
Not used.
68
NC
—
Not used.
26
Pin No.
Pin Name
I/O
Pin Description
69
AMP ON
O
Power supply on/off control signal output
70
MUT
O
System attenuate control signal output
71
AMP MUT
O
Power amp attenuate control signal output
72
VOL MUT
O
Mute control signal output for electrical volume
73
TU ON
O
Tuner attenuate signal output
74
EEP SDA
I/O
Tuner EEPROM serial data signal input/output
75
EEP SCL
O
Runer EEPROM serial clock signal output
76
IF BW
I
Not used.
77
NC
—
Not used. Tuner switch VCO level shift signal input
78
NC
—
Not used.
79
REIN1
I
Rotary encoder signal input
80
REIN0
I
Rotary encoder signal input
81
AD ON
O
Power control output for A/D conversion
82 – 92
NC
—
Not used.
93
OPEN
I
Front panel open/close condition signal input
94 – 98
NC
—
Not used.
99
PW ON
O
System power supply control signal output
100
NC
—
Not used.
27
27
F
C
B
D
A
E
I
J
J
I
B
A
C
D
D
E
F
DETECTOR
1
2
J
I
4
5
6
7
A
B
C
D
D
8
9
E
F
LD
PD
LASER DIODE
ILCC
PD
OPTICAL PICK-UP
(KMS-241C/J1RP)
(KMS-241C/J1RP)
AUTOMATIC
POWER
CONTROL
Q302
11
10
APC
PD
LD/PD
AMP
12
APCREF
I-V
AMP
I-V
AMP
AT
AMP
B.P.F.
29
30
WBL
ADFM
ADIN
32
ADFG
ABCD
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
35
34
26
28
ABCD
FE
TE
SE
V-I
CONVERTER
20
F0CNT
WBL
3T
EQ
+3.3V
SERIAL/
PARALLEL
CONVERTER,
DECODER
COMMAND
17
16
18
SWDT
SCLK
XLAT
RF AMP
B.P.F.
46
RFO
40
RF AGC
& EQ
AGCI
EQ
38
RF
RF AMP,
FOCUS/TRACKING ERROR AMP
IC302
TEMP
48 47
MORFO
MORFI
3T
PEAK &
BOTTOM
WBL
33
AUX
73 62
37
PEAK
36
BOTM
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC303
6
8
OUT4F
OUT4R
M
M901
(SPINDLE)
27
25
OUT2F
OUT2R
M
M902
(SLED)
21
23
OUT1F
OUT1R
12
10
OUT3F
OUT3R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
3
4
IN4R
IN4F
29
30
IN2F
IN2R
19
18
IN1F
IN1R
14
15
IN3F
IN3R
SPFD
SPRD
LEVEL SHIFT
IC306
92
91
88
89
86
85
83
APCREF
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
16
PSB
PWM GENERATOR
AUTOMATIC
POWER
CONTROL
DIGITAL
SERVO
SIGNAL
PROCESS
74
65
64
75
66
63
ANALOG MUX
A/D CONVERTER
AUTO
SEQUENCER
13
FROM CPU
INTERFACE
DIGITAL SERVO
SIGNAL PROCESSOR
IC301 (2/2)
RECP
PEAK HOLD
Q301
+3.3V
ABCD
AUX1
AUX2
ABCD
FE
TE
SE
PEAK
BOTM
81
80
82
XLRF
CKRF
DTRF
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMORY CONTROLLER
ATRAC
ENCODER/DECODER
PLL
FILTER
59
58
61
60
FILI
PCO
CLTV
FILO
100
EFMO
23
ADDT
IC301 (1/2)
15
TX
COMPA-
RATOR
51
52
55
ASYO
ASYI
RFI
ADIP
DEMODULATOR/
DECODER
78
ADFG
SPINDLE
SERVO
79
F0CNT
94 93
SPFD
SPRD
SUBCODE
PROCESSOR
24
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
22
21
6
5
4
1
9
12
15
17
DIN
DOUT
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER, 2M BIT D-RAM
IC301 (1/2)
DADT
INTERNAL BUS
D-RAM
CLOCK
GENERATOR
25
26
27
512FS
BUFFER
IC304
XBCK
LRCK
FS256
BCK
LRCK
16
OSCI
17
OSCO
CPU
INTERFACE
MONITOR
CONTROL
CONTROL
10
XRST
12
DQSY
11
SQSY
14
XINT
9 8
5 6 7
SENS
SRDT
SWDT
SCLK
XLAT
LEVEL SHIFT
IC502
5
13
3 1
6
12
4 2
LEVEL SHIFT
IC503
1
2
3
4
MNT0
MNT1
MNT2
MNT3
13
1
3
5
12
2
4
6
FOK
SHOCK
XBUSY
SLOCK
SWDT
SCLK
XLAT
59
62
55
54 52
45 51 64
26 27 28 29
MNT0
MNT1
MNT2
MNT3
LOCK
39
TEMP
MD-RST
SQSY
CC-XINT
SENS
MD-SI
MD-SO
MD-CKO
MD-LAT
7
6
EJECT
LOAD
5
4
04
1
7
M
RIN
FIN
OUT1 OUT2
LOADING
MOTOR DRIVE
IC305
M903
(LOADING)
63
C-SW
LOADING START/
EJECT END
EJECT END
E-SW
LIMIT-IN
(LIMIT)
LOADING
END
END
ON: When the disc loading start
and the disc eject completion.
ON: When completion of
the disc loading.
ON: When the optical pick-up is
inner position.
31
32
EXTAL
XTAL
X501
10MHz
TH501
66
DEEMP
47, 46, 48, 49
1, 2, 24, 25
D0 – D3
32 – 29, 34 – 38, 43
9 – 12, 14 – 18, 5
A0 – A9
D0 – D3
A00 – A09
41
22
45
3
44
4
42
23
XOE
XWE
XRAS
XCAS
OE
WE
RAS
CAS
D-RAM
IC307
A
V OUT L
EMPHASIS
MD MECHANISM CONTROLLER
IC501 (1/2)
11
56
EMPHASIS
RST
IC101
DADT VOUTL
BCK
VOUTR
LRCK
RSTB
XTI
DM1
R-CH
• Signal path
: MD
X301
22MHz
TUNER
SECTION
MDX-C6500X
3-2. BLOCK DIAGRAM — MD SECTION —
(Page 28)
28
28
CNJ600
(ANTENNA)
2
10
1
ANTFM
MPX
V OUT L
8
AM DET
19
AM IF
14
S-METER
12
SDA
13
SCL
4
FM AGC
16
VDD (5V)
11
IF BW
5
VDD (8V)
17
SDA (EEP)
18
SCL (EEP)
ANTAM
TUNER UNIT
TU601
2
45
47
72
12
14
15
20
21
18
11
13
1
3
30
SYSTEM CONTROL
IC801 (1/2)
ELECTRONIC VOLUME
IC701
AUX L
OUT LF
29
OUT LR
35
BEEP
69
AMP ON
71
AMP MUTE
65
TEL MUT
64
ACC IN
MD L
MPX
AM
AM IF
LEVEL
MPIN
SDA
SCL
MUTE
VOL MUT
S-METER
SDA
SCL
FM AGC
TU +8V
BACKUP +5V
TU +5V
EEP SDA
EEP SCL
R-CH
L
R
BUS AUDIO IN
R-CH
L
R
AUDIO OUT REAR
MD
SECTION
A
MUTE
SWITCH
Q401, 402
Q102
MUTE
Q101
MUTE
–3
–4
R-CH
L
R
AUDIO OUT FRONT
–1
–2
–5
–6
22 MUTE
4 STAND BY
11
12
5
3
9
8
POWER AMP
IC101
1
9
2
10
CNP501
FL+
FL–
RL+
RL–
4
12
FR+
FR–
3
11
RR+
RR–
16 BATT
13 ATT
5 AMP REM
6 ANT REM
R-CH
BATT
F901
TEL
MUTE
Q916
7 ACC
15 TEST
99
73
PW ON
25
DOOR IND
66
TEST IN
6
DSTSEI
ACC
CHECK
Q905
TU +8V
REG
Q602
COM +8V
REG
Q904
TU +5V
REG
Q601
BATT
CHECK
Q906
POWER SUPPLY
IC901
1
TU ON
4
2
BATT
BATT
BATT
VCC
AMP +B
5
BU +B
3
GND
AMP ON
PULL UP +5V
BACKUP +5V
TU +8V
TU +5V
3
04
75
74
4
FM AGC
17
SDA (EEP)
18
SCL (EEP)
FM AGC
EEP SDA
EEP SCL
3
75
MUT
70
LOCK
UNI CLI
41
UNI CLO
UNI SI
UNI SO
42
BUS ON
20
SYS RST
19
BU IN
28
RESET
30
74
AMP +B
SWITCH
Q921
COM +8V
TU ON
SWITCH
Q902
TU ON
SWITCH
Q603
PW ON
SWITCH
Q919
DOOR IND
SWITCH
Q908
Q907
FM200K AM10K
SW802 (FREQUENCY SELECT)
E MODEL
65
10
67
MD MECHANISM CONTROLLER
IC501 (2/2)
A-ATT
21
LOCK
48
UNICKD
49
UNISI
MDM ON
MD ON
61
BUS ON
30
RESET
60
BU IN
50
UNI SO
46
LIMK OFF
50
44
43
RESET
IC902 BU 5V
BUS INTERFACE
IC802
10
BATT(L) CHECK
3
13
RESET
2
12
9
8
11
BUS ON
1
6
5
4
1
6
8
7
2
3
4
DATA
CLK
Q803
Q801
SIRCS
BATT
CNP801
BUS
CONTROL IN
DISPLAY
SECTION
SECTION
B
BATT
• Signal path
: FM
: AM
: MD
: AM
: MD
MD MECHA ON
SWITCH
Q903, 913
Q403
Q402
+11V REG
Q920
+3.3V REG
IC401
MD +5V
REG
Q922
+3.3V REG
Q401
MD ON
SWITCH
Q701, 702
MD +5V
REG
Q703
BATT
MD 5V
+3.3V
LO 12V
MD +5V
LO 12V
FM50K AM9K
PJ400
PJ400
S900
(RESET)
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 29)
(Page 27)
MDX-C6500X
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