Sony MHC-RG550 Service Manual ▷ View online
25
MHC-RG550
Pin No.
Pin Name
I/O
Pin Description
74
TUNER TUNED
I
Tuner tuning signal input from the tuner unit
75
TUNER STEREO
I
Tuner stereo signal input from the tuner unit
76
CD DRF
I
CD DRF signal input
77
CD WRQ
I
CD WRQ signal input
78
CD NUMBER SENSOR
I
CD number sensor signal input
79
TAPE AMS IN
I
Tape AMS signal input
80
VR ENCODER A
I
VR encoder (VR601) signal input
81
VR ENCODER B
I
VR encoder (VR601) signal input
82
TAPE REEL A
I
Tape reel A signal input
83
TAPE REEL B
I
Tape reel B signal input
84
MODE SW IN
I
Mode switch signal input
85
STREAM 1 LED
O
Stream LED drive signal output
86
STREAM 2 LED/CD MUTE
O
Stream LED drive signal output
87
STREAM 3 LED
O
Stream LED drive signal output
88
STREAM 4 LED/
O
Stream LED drive signal output
MECHA VCC
89
VSS2
—
Ground pin
90
VDD2
—
Power supply pin (+3.3 V)
91
STREAM 5 LED/
O
Stream LED drive signal output
TAPE SOL A
92
STREAM 6 LED/
O
Stream LED drive signal output
TAPE SOL B
93
POWER LED
O
POWER LED (LED614) drive signal output
94
POWER RELAY
O
Power relay signal output
95
LC72121/M61529/
O
Serial data signal output
BU2099FV DO
96
LC72121 DI
I
Serial data signal input
97
LC72121/BU2099FV CLK
O
Serial clock signal output
98
LC78646/LC78684 DO
O
Serial data signal output
99
LC78646/LC78684 DI
I
Serial data signal input
100
LC78646/LC78684 CLK
O
Serial clock signal output
26
MHC-RG550
5-2. DIAGRAMA EM BLOCO — SEÇÃO CD —
8
7
9
10
80
79
70 LIMIT SW
20
TDO
18
10
VO3(+)
FOIN
20
TIN
3
SPIN
7
MUTE
25
SLIN
17 VO3(–)
11 VO2(+)
12 VO2(–)
26 VO4(+)
27 VO4(–)
2 VO1(+)
1 VO1(–)
A
C
B
D
E
F
LD
PD
RF AMP, FOCUS/TRACKING ERROR AMP,
DIGITAL SIGNAL PROCESSOR, DIGIRAL SERVO PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
IC721
21
FDO
23
SLDO
22
SPDO
25
CONT4
A
B
D
E
F
C
I-V AMP
DETECTOR
LD
PD
LASER DIODE
OPTICAL PICK-UP
BLOCK
(KSS-213D)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
M702
(SPINDLE)
M701
(SLED)
M
M
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC722
49
48
X701
16.9344MHz
S701
(LIMIT)
79 DATAIN
80 DATACK
5 C2FIN
1 LRSY
2 ADDATA
3 ADBCK
4 ADLRCK
7 CKIN
9 CKOUT
78 RESB
99 I-LC78646/LC78684 DI
98 O-LC78646/LC78684 DO
100 O-LC78646/LC78684 CLK
5 O-LC78646 CE
77 I-CD WRQ
76 I-CD DRF
4 O-LC78646 RESET
60
DATA
59
DATACK
52
C2F
58
LRSY
57
ASDFIN
56
ASDACK
55
ASLRCK
54
16MOUT
10
6
76 66
53
EFLG
50
FSX/16MIN
73 CMDOUT
74 CMDIN
CE
FSYNC
O-LC78684 CE
I-LC78684 SYNC
75 CL
26
MP3RES
64
DO
63
DI
62
CL
78
I-CD NUMBER SENS
20
I-CD ENCODER
9
RIN
LM-R
11
RESET
1
O-SYS-MUTE
94
O-POWER RELAY
27
I-HOLD
S-MUTE
O-POWER
HOLD
61
CE
65
*WRQ
67
DRF
72
CD MUTE
66
*RES
4 OUT1
2 OUT2
M751
(LOADING)
M
LOADING MOTOR DRIVE
IC701
MP3 DECODER
IC801
SYSTEM CONTROLLER
IC601 (1/2)
S751
OPEN/CLOSE
DETECT
OPEN
CLOSE
LEVEL SHIFT
Q731
TABLE ADDRESS
SENSOR
IC731
+
ROTARY
ENCODER
RE701
7
FIN
LM-F
9
RIN
TM-R
4 OUT1
2 OUT2
M741
(TABLE)
M
TABLE MOTOR DRIVE
IC712
7
FIN
TM-F
C
B
42
LCHO
45
RCHO
R-CH
CD-L
A
APC
FIN2
FIN1
LDD
LDS
TIN2
TIN1
XOUT
XIN
RF
4
EFMIN
3
ERROR
CORRECT
EQ,
AGC
COMMAND
INTERFACE
INTERFACE
CLOCK
GENERATOR
PH, BH
RF AMP
TBAL
A/D
CONVERTER
D/A
CONVERTER
EXTERNAL
AUDIO IN
SERIAL OUT
D/A
CONVERTER
SERVO
PROCESSOR
AUTOMATIC
POWER CONTROL
Q701
3
I-POWER DOWN
POWER DOWN
RESET
S-MUTE
MIC
O-POWER
HOLD
POWER DOWN
RESET
LM-F
LM-R
• SIGNAL PATH
: CD PLAY
• R-ch is omitted due to same as L-ch.
R-CH
DISC TRAY
ADDRESS DETECT
I/01 – I/016
A0 – A8
MDATA0
– MDATA15
MADRS0
– MADRS8
29 OE
45
OEB
15 WE
42
WEB
16 RAS
41
RASB
31 LCAS
43
CASLB
30 UCAS
44
CASUB
MEMORY
IC802
2-5, 7-10,
35-38, 40-43
23-30, 33-40
60-53, 50
18-21, 24-28
MUTING
Q311
MUTING CONTROL
SWITCH
Q312
TM-F
TM-R
D
TUNER/TAPE/PANEL
SECTION
AMP/POWER SUPPLY
SECTION
AMP/POWER SUPPLY
SECTION
AMP/POWER SUPPLY
SECTION
DOUT
39
DOUT
(Page 27)
(Page 27)
(Page 27)
(Page 26)
27
MHC-RG550
5-3. DIAGRAMA EM BLOCO — SEÇÃO TUNER/TAPE/PANEL —
CAPSTAN/REEL
MOTOR DRIVE
Q618
PLUNGER DRIVE
(DECK-A)
Q616
M
M
TAPE MECHANISM
DECK BLOCK
(CAPSTAN/REEL)
(DECK-A)
(DECK-B)
96 I-LC72121 DI
97 O-LC72121/BU2099 CLK
9 O-LC72121 CE
74 I-TUNER TUNE
75 I-TUNER STEREO
95 O-LC72121/M61529/BU2099 DO
G
TUNER UNIT
AM LOOP
FM ANT
AM ANT
L-CH
R-CH
R-CH
TUNER-L
TU-MUTE
DI
DI
CLK
BIAS OSC
L201
REC BIAS
SWITCH
Q228
+9V
BIAS OSC
Q223
ERASE
HRPE1
(REC/PB/ERASE)
(DECK-B)
HP1
(PB)
(DECK-A)
L-CH
R-CH
R-CH
R-CH
L-CH
R-CH
R-CH
22 I-STREAM-IN
23 I-VACS
21 I-SW ON/OFF SENSOR
BAND-PASS
FILTER
28 I-REMOCON-IN
REMOTE CONTROL
RECEIVER
RM601
FRONT PANEL KEY
81 I-VR-ENCODER-B
80 I-VR-ENCODER-A
ROTARY
ENCODER
VR601
LED DRIVER
Q602-605,607
BUFFER
Q609,610
FLD601
FLUORESCENT
INDICATOR TUBE
MUTING
Q219, 221
PLUNGER DRIVE
(DECK-B)
Q617
LED614
A-MODE
TAPE A STAT
TAPE B STAT
TAPE REEL A
TAPE REEL B
TAPE REEL B
B-SOL
A-SOL
CAPM+
MECHA-VCC
SOL-A
SOL-B
A-HALF
B-HALF
A-PHOTE
B-PHOTE
B-MODE
REC (FWD)
REC (REW)
G1
I
G12
P1
I
P4
•
P5
I
P8
•
P9
I
P22
18
82
83
I-TAPE A STAT
I-TAPE B STAT
I-TAPE B STAT
I-TAPE REEL A
I-TAPE REEL B
I-TAPE REEL B
19
93
O-POWER LED
8
O-BU2099 LCK
79
I-TAPE AMS IN
42
I
45
•
47
I
50
•
52
I
65
30
I
41
VACS/STR
VACS/STR
E
VOLUME
I-KEY2
I
I-KEY0
24
I
26
O-STREAM 1 LED
O-STREAM 6 LED
85
I
88
•
91
•
92
SO
MCLK
LCK
LCK
X601
32.768kHz
13
12
XT2
XT1
7
O-M61529 CLK
16
15
RES601
8.64MHz
CF2
CF1
POWER
HP
F
SYSTEM CONTROLLER
IC601 (2/2)
FM 75Ω
COAXIAL
PH301
DIGITAL
OUT
LED601-606
(STREAM1-6)
ANTENNA
34
32
BIN (L)
AIN (L)
28
27
EQOUT (L)
26
PB-OUT (L)
TAI (L) MUTE
DECK A/B SELECT SWITCH, REC/PB EQ AMP
IC201
REC-
OUT (L)
OUT (L)
REC-IN (L)
21
EQ
24
DO
CLK
CE
TUNED
ST
MULTI CONTROLLER
IC309
7 BIAS
15
14
6 REC
11
1
TUNER MUTE
MUTE-ON/OFF
REC MUTE-ON/OFF
9
10 REC MUTE
PB MUTE
8
A/B
13
A/B
REC ON/OFF
SWITCH
Q222, 225
3
DATA
4
CLOCK
5
LCK
18
SO
CLK
DI
13
LM-L (CD)
LM-F
12
LM-R (CD)
LM-R
TAPE-L
REC-L
SP-F
15
14
14
TM-L (CD)
TM-F
TM-R (CD)
TM-R
• SIGNAL PATH
: TUNER (FM/AM)
: TAPE PLAY (DECK-A)
: TAPE PLAY (DECK-B)
: REC
• R-ch is omitted due to same as L-ch.
SURR
LM-F
LM-R
LM-R
TM-F
TM-R
TM-R
D OUT
DI
SO
CLK
MCLK
LCK
LCK
MECHA-VCC
SOL-A
SOL-B
SOL-A
SOL-B
16
SP RELAY
SP-F
17
LINK/MATRIX
SURR
O-GAME LED
O-MD/VIDEO LED
O-TAPE LED
O-TUNER LED
O-CD LED
68
•
67
•
69
•
70
•
71
LED607
I
LED610,
LED612
AMS
Q210,211
EQ
Q212
2
3
AMP/POWER SUPPLY
SECTION
AMP/POWER SUPPLY
SECTION
AMP/POWER SUPPLY
SECTION
D
CD
SECTION
K
AMP/POWER SUPPLY
SECTION
H
AMP/POWER SUPPLY
SECTION
J
AMP/POWER SUPPLY
SECTION
D OUT
+3.3V
+3.3V
+3.3V
GND
(Page 27)
(Page 27)
(Page 27)
(Page 27)
(Page 27)
(Page 25)
(Page 27)
28
MHC-RG550
5-4. DIAGRAMA EM BLOCO — SEÇÃO AMP/POWER SUPPLY —
JK006
R-CH
PHONES
+
–
–
–
+
R
L
SPEAKER
JK502
R-CH
R-CH
–VL
–VP
+VP
–VH
OVER LOAD
DETECT
Q505
OUTPUT LEVEL
DETECT
Q23, 24
Q23, 24
DC DETECT
Q5, 6
BIAS
Q507, 509
HOLD
Q7 – 9
DC DETECT
Q5,6
THERMAL DETECT
Q10, 11
+
FINAL DRIVE
Q501, 503
SWITCHING
Q17, 19, 22
SWITCHING
Q18
R-CH
R-CH
+
+
+
TH501,
502
+
R-CH
R-CH
CASCADE
Q511, 513, 515
PRE DRIVE
Q517, 519
MIC AMP
IC001 (1/2)
MIC AMP
IC001 (2/2)
MUTING
Q525
+
CURRENT
MIRROR
Q521, 523
R-CH
+
+VL
+VH
OUTPUT LEVEL
DETECT
Q20, 21
Q20, 21
R-CH
+
MUTE
Q321
INPUT SELECT SWITCH, TONE CONTROL,
ELECTRICAL VOLUME, BASS BOOST AMP
IC301
BASS BOOST CONTROLLER
IC310
19
SAOUT
VACS/STR
29
TOUT2
25
OUT2
VR001
JK003
3
DATA
4
CLOCK
LCK
S-MUTE
MIC
O-POWER
HOLD
CLK
SO
5
LCK
40 CD-L
MD-L
2 MIC
39 TUNER-L
38 TAPE-L
28 VOLIN2
MIC LEVEL
AGC
Q001
–30V
REGULATOR
Q533 – 536
(AC IN)
SUB POWER
TRANSFORMER
T902
MAIN POWER
TRANSFORMER
T901
RECT
D2
+VL
TO
POWER AMP
BLOCK
–VL
VL
VL
VF1
TO
FLUORESCENT
INDICATOR TUBE
VF2
RECT
D1
+VH
–VH
–VFL
EVER+10V
VH
VH
RECT
D902 – 905
+4V
REGULATOR
IC602
+3.3V (SUB)
DI
SO
CLK
MCLK
LCK
MECHA VCC
SOL-A
SOL-B
SOL-B
RESET
POWER DOWN
D617
RESET SIGNAL
GENERATOR
IC603
MIC
MIC LEVEL
CD-L
A
TUNER-L
TAPE-L
REC-L
J
TAPE-L
G
K
C
21
DATA
22
CLOCK
35 RECB-2
36 GAME-L
S-MUTE, O-POWER, HOLD
B
: MIC INPUT
9
MOTOR VCC
10
SOL-A
11
SOL-B
MECHA VCC
SOL-A
SOL-B
H
HP
F
VOLTAGE
SELECTOR
S901
VOLTAGE
SELECTOR
RY901
RESET SWITCH
Q601
R-CH
FRONT SPEAKER
ON/OFF RELAY DRIVE
Q304
MUTING CONTROL
SWITCH
Q527
POWER OFF
MUTING DRIVER
Q529, 530
D513
VM+10V
FAN MOTOR
ON/OFF SWITCH
Q371,373
RY501
M731
(FAN)
(FAN)
M
SP-F
S-MUTE
O-POWER
HOLD
MIC
HOLD
MIC
: TAPE PLAY
: REC
: CD PLAY
: TUNER (FM/AM)
SIGNAL PATH
: MD (VIDEO) IN
R-ch is omitted due to same as L-ch.
R-CH
JK302
L
R
R-CH
JK005
JK004
L
R
VIDEO
AUDIO
VIDEO
OUT
GAME
INPUT
MD (VIDEO)
IN
37
BUFFER
IC304
CENTER VOLATAGE
GENERATOR
Q324
VM+10V
TUNER/TAPE/PANEL
SECTION
TUNER/TAPE/PANEL
SECTION
TUNER/TAPE/PANEL
SECTION
CD
SECTION
TUNER/TAPE/PANEL
SECTION
TUNER/TAPE/PANEL
SECTION
CD
SECTION
MCLK
DI
+4V
HOLD
Q12
OVER CURRENT
DETECT
Q13
O-POWER
VM+9V
VM+10V
RECT
D319 – 322
RECT
D301 – 304
DC DET
Q329
VM
VM
VCC
DECK+9V, M+9V
+10V
REGULATOR
IC313
+9V
REGULATOR
IC308
D102
P+7V
D313 – 315
+9V
REGULATOR
IC305
+4V
REGULATOR
IC306
B+ SWITCH
Q301, 302
RELAY B+
+9V
+1.8V
(MP3)
+3.3V (MAIN)
+1.8V
REGULATOR
IC803
POWER ON/OFF
RELAY DRIVE
Q330, 331
TUNER/
TAPE/
PANEL
SECTION
CD
SECTION
E
VACS/STR
MIC+10V
(Page 26)
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