Sony XR-C7500R / XR-C7500RX Service Manual ▷ View online
17
17
XR-C7500R/C7500RX
SECTION 7
DIAGRAMS
7-1.
BLOCK DIAGRAM – TUNER/TAPE Section –
1
2
FM-ANT
AM-ANT
53
VSM
AMSIN
32
TUNATT
14
S-METER
10
MPX
8
AM-DET
9
RDSDET
05
MUTING
Q22
BUFFER
Q50
MUTING
Q21
D20
FM/AM TUNER UNIT
TUX1
SYSTEM CONTROLLER
IC600 (1/4)
17
EEPROM SDL
J1
(FM/AM ANTENNA)
5
VCC
TUNER VCC
16
VDD
TUNER +5V
11
BU 5V
10
52
MPTH
75
DAVN
RDS DECODER
IC50
INTERFACE
REGISTER
IIC BUS
SLAVE
TRANSCEIVER
OSCILLATOR
& CLOCK
X50
4.332MHz
4
8
5
OSCI
OSCO
SDA
SCL
DAVN
57 kHz
BAND-PASS
FILTER
CLOCKED
COMPARATOR
RDS/RDBS
DEMODULATOR
& DECODER
SIGNAL
QUALITY
DECODER
16
18
19
MPX
CIN
4
5
SC
OUT
MULTI
PATH
DETECTOR
20
2
LVIN
MPTH
50
QUALITY
56
NS MASK
BAND-PASS
FILTER
IC90
MUTING CONTROL
SWITCH
Q20
NOISE DET
DISCHARGE
SWITCH
Q601
DATA
CLOCK
DATA,CLOCK
(Page 18)
MPX
(Page 18)
A
AM
(Page 18)
B
LEVEL
(Page 18)
F
BACKUP +5V
T. ROM-SDA
18
EEPROM SCL
T. ROM-SCL
SDA
SCL
4
FM AGC
51
FM AGC
BUFFER
Q11
DATA
12 13
AM-IF
19
CLOCK
10
E
AM-IF
(Page 18)
C
9
RV230
DOLBY LEVEL (L)
TAPE EQUALIZER AMP,
DOLBY NR AMP, AMS
IC250
34
32
R-CH
PBF
IN1
IN1
FWD
L-CH
HP901
(PLAYBACK)
FWD
R-CH
REV
L-CH
REV
R-CH
PBR
IN1
IN1
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
EQ AMP
29
27
MUTE
DOLBY
NR AMP
PB
OUT1
TAPE
IN1
IN1
AMS
DET
+
19
DRSW
18
TAPESW
20
INSW
DOLBY
MSSW
24
LINE
OUT1
14
MS
OUT
TAPE L
(Page 18)
D
• SIGNAL PATH
: MW/LW
: FM
: TAPE PLAY
REGULATOR
CONTROL SWITCH
Q202
CAPSTAN/REEL
MOTOR DRIVE
Q204
TAPEON
CM-ON
VCC
REEL SENSOR B+
BATT B+
BATT B+
Q205
IN1
IN2
OUT1
OUT2
LOADING/TAPE OPERATION
MOTOR DRIVE
IC201
61
M
M
M901
(CAPSTAN/REEL)
9
7
MOTOR
DRIVE
3
4
1
LM-EJ
59
LM-LOD
60
REGULATOR
Q203
62
LOADING/TAPE
OPERATION
TAPE OPERATION
SWITCH
BUFFER
TAKE-UP
REEL
SENSOR
SUPPLY
REEL
SENSOR
REEL SENSOR BOARD
REEL
58
65 – 68
POS0 – POS3
TAPE
DETECT
EJECT/FF/REW/
REV/FWD MODE DETECT
11
2
AMSON
3
TAPE ATT
9
DOLBY
120
MTLOUT
57
F/R
7
16
17
18
18
XR-C7500R/C7500RX
05
H
(Page 20)
AMPON
SYSTEM CONTROLLER
IC600 (2/4)
CN13 (2/2)
AUDIO
OUT FRONT
AUDIO
OUT REAR
MUTING
Q311
MUTING
Q411
MUTING
Q331
MUTING
Q431
FL+
1
12
14
5
3
OUT2+
OUT2–
21
23
OUT4+
OUT4–
IN2
IN4
11
9
7
OUT1+
OUT1–
IN1
15
17
19
OUT3+
OUT3–
IN3
22 MUTE
16
105
15
AC GND
4
STBY
CN700 (1/2)
(POWER CONNECTOR)
POWER AMP
IC700
FL–
9
FR+
4
FR–
12
RL+
2
RL–
10
RR+
3
RR–
11
TEST
15
TEL-ATT
13
R-CH
R-CH
41
40
XTLI38
X100
16.9344MHz
XTLO38
LOW-PASS
FILTER
IC301
CENTER VOLTAGE
GENERATOR
(FOR BIAS)
IC41
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER,
D/A CONVERTER
IC100
27
29
AOUTL1
AOUTR1
54
52
AOUTR3
AOUTL3
60
61
35 LIN
46 RIN
REDY
TRDT
63
RVDT
59
SCK
62
57
TRDT
XLAT
REDY
DSPRST
SCK
RVDT
TRDT
XLAT
REDY
DSPRST
DSPRST
DSPDATA
DSPCKO
DSPCKO
SCK
RVDT
L
R
L
R
L
R
R-CH
R-CH
CN13 (1/2)
BUS
AUDIO IN
MONO FADER
MIXER
SUBWOOFER+
PHASE CONTROL
MONO
FADER
34
ACINLF
33
35
ACINLR
SWINR
29
30
OUTLF
OUTLR
OUTSWR
ELECTRICAL VOLUME
IC10 (2/2)
XLAT
36
78 DSPREADY
35
26 DSPSO
27 DSPCKO
25 DSPSI
DSPLAT
DSPRST
R-CH
R-CH
FL-OUT
RL-OUT
FR-OUT
RR-OUT
• SIGNAL PATH
: TAPE PLAY
: FM
: MW/LW
: BUS AUDIO IN
XRST
AUDIO
+9V
R-CH
OUTPUT
SELECTOR
25
LINE
DRIVER
IC300
MUTING
CONTROL SWITCH
Q700, 701
I
(Page 20)
BUIN
LEVEL SHIFT
Q600
38
18
11
20
1
SEL
AM
FD1L–
12
AMIF
13
MPX
R-CH
SOFT
MUTE
TONE
CONTROL
LOUDNESS/
VOLUME
INPUT SELECT, FM MPX
IC10 (1/2)
PILOT
CANCELATION
DIGITAL
CONTROL
L.P.F.
PLL
QUAL
IIC BUS
SDA
SCL
DATA
CLOCK
QUALITY
PILOT
DET
+STEREO ADJUST
+STEREO BLEND
+STEREO BLEND
L.P.F.
S & H
HIGH-CUT
D/A
CONVERTER
MULTIPATH
DETECTOR
DEMODULATOR
21
18
MPOUT
16
MPIN
15
LEVEL
14
INPUT
MULTIPLEXER
LOUDNESS
MUTE
AM/FM
NOISE
BLANKER
TO
OUTPUT
SELECTOR
ACOUTL
SM
B
(Page 17)
AM
D
(Page 17)
TAPE L
C
(Page 17)
AM-IF
A
(Page 17)
MPX
E
(Page 17)
DATA, CLOCK
F
(Page 17)
LEVEL
G
(Page 19)
DSPDATA, DSPCKO
31 VOLATT
70 I2C-SDA
71 I2C-SCL
DATA
CLOCK
84
TESTIN
96
TELATT
55
AMPON
5
ATT
4
MUTING
Q312
MUTING
Q412
MUTING
Q332
MUTING
Q432
R-CH
R-CH
AMPATT
BEEP
7-2.
BLOCK DIAGRAM – MAIN Section –
19
19
XR-C7500R/C7500RX
LED910 – 915
(LCD BACK LIGHT)
(XR-C7500RX)
(XR-C7500R)
(XR-C7500R)
05
80
REIN1
KEYACK
GREEN
79
62
TX
13
85
96
OSC
KEYIN1
REIN0
116 115
KEYIN0
X1
X0
X1A
X0A
RCIN0
RCIN1
46
47
48 72
93
92
73
74
KEY ACTIVE
SWITCH
Q406, 407
OSC
D580
D520
AMBER
AD-ON
117
NOSE-SW
RX
G
(Page 18)
J
(Page 20)
DSPDATA,DSPCKO
LSW801,901–917,
S901 – 904
S600
(NOSE DETECT)
ROTARY
ENCODER
RE901
B/U +5V
CN901
FRONT PANEL SIDE
CNP801
(XR-C7500R)
CN801
(XR-C7500RX)
MAIN BODY SIDE
BATT B+
8
1
LED
DRIVE
Q902
X601
3.68MHz
X600
32.768kHz
XTAL
EXTAL
85
86
X800
18.432MHz
C953, R957
SYSTEM CONTROLLER
IC600 (3/4)
LIQUID CRYSTAL DISPLAY
DRIVE CONTROLLER
IC800 (1/2)
LIQUID CRYSTAL DISPLAY DRIVER
IC901
1 – 74
SEG1 – SEG74
83 – 76
COM1 – COM8
LIQUID CRYSTAL DISPLAY
LCD901
VOLUME/BALANCE/
FADER CONTROL
RE901
J520
REMOTE IN
DOORIND
118
LED DRIVE
Q580
LCD-DATA
100
LCD-CLK
99
LCD-CE
98
TX/LCD-DATA
60
RX
12
LCD-SCK
64 66
LCD-CE1
SP-SCK
61
SP-SI
TRDT
SCK
63
SP-LAT
BOOT
33
57
4
106
SA LAT
BOOT
LED801
(TAPE WINDOW),
LSW801
84
DIMMER
86
LED DRIVE
Q903
Z
(XR-C7500RX)
LED
DRIVE
Q901
LCD B+
LSW901 – 908,
LSW910 – 917
LSW910 – 917
RX
7-3.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL Section –
20
20
XR-C7500R/C7500RX
B/U +5V
RESET SIGNAL
GENERATOR
IC560
REMOTE CONTROL
RECEIVER
IC951
SIRCS
BUFFER
Q503
BATTERY
DETECT
Q500
S500
6
8
4
CLK
CLK IN
DATA OUT
DATA
2
RST
RESET
SWITCH
BUS ON
SWITCH
13
11
1
BUS ON
OUT
OUT
BUS
ON IN
12
9
DATA IN
SONY BUS INTERFACE
IC500
SYSTEM CONTROLLER
IC600 (4/4)
BUS ON/OFF SWITCH
Q502
BATT
BATT B+
BUIN
BUS ON
DATA
CLK
RESET
7
6
5
4
2
SIRCS
3
CN500
BUS CONTROL IN
(FOR SONY BUS)
05
RST
3
BATT
BATTERY
SWITCH
10
BU IN
77
14
19 UNICKO
17 UNISI
18 UNISO
86 HSTX
6
24 SIRCS
85 RAMBU
90
TH501
D507
D500
B+ SWITCH
Q81, 82
FLASH ON
83
82
RESET
SYSRST
BU-IN
BUS-ON
PWON
113
TUNON
LEVEL SHIFT
Q501
LIQUID CRYSTAL DISPLAY
DRIVE CONTROLLER
IC800 (2/2)
UNISI
97 UNISO
50 LINK OFF
UNICKI
52
ILL-ON
BU-IN
BUS-ON
RESET
101
38
49
NMI (H)
82
81
98
RESET
LEVEL SHIFT
IC801
AMP-R
AMPON
ANT-R
B+
5
6
16
ACC
7
D501
RAM RESET
IC570
B/U +5V
D591
D592
ACCESSORY
CHECK
Q660
ILL
14
ILLUMINATION
LINE DETECT
Q640
D703
D705
ACCIN 81
ILLIN 95
TH700
TH701
ANTENNA
REMOTE SWITCH
Q710, 711
AMP
REMOTE SWITCH
Q720, 721
H
(Page 18)
I
(Page 18)
AUDIO +9V
B/U +5V
DSP CIRCUIT
B+
DIGITAL +3.3V
ANALOG +3.3V
TUNER VCC
TUNER CIRCUIT
B+
BATT B+
POWER AMP
(IC700) B+
LCD B+
LCD DRIVER
(IC901) B+
TUNER +5V
TUNER CIRCUIT/
RDS DECODER
(IC50) B+
+10V REGULATOR
Q582
D801
RX
J
(Page 19)
BATTERY OFF
MUTE DRIVER
Q704, 705
POWER ON/OFF
SWITCH
Q583
REGULATOR
CONTROL SWITCH
Q581
CN700 (2/2)
(POWER CONNECTOR)
+5V REGULATOR
Q70
+9V REGULATOR
IC530
+3.3V REGULATOR
IC130, Q130
+3.3V REGULATOR
IC170
+5V REGULATOR
IC550
LED901 – 904
(ILLUMINATION)
LSW909
DSO
7-4.
BLOCK DIAGRAM – BUS CONTROL/POWER SUPPLY Section –
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