Sony HCD-GX450 / MHC-GX450 Service Manual ▷ View online
21
21
HCD-GX450
SECTION 5
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.
Note on Printed Wiring Boards:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
• Indication of transistor.
• Abbreviation
CND
: Canadian model
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : FM
(
tion tolerances.
no mark : FM
(
) : CD STOP
• 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.
F
: TUNER
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
f
: AUDIO
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
Circuit Boards Location
• Waveforms
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(SIDE A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(SIDE B)
the parts face are indicated.
– PANEL BOARD –
1
IC601
qd
(I-XT2)
2 V/DIV, 10 s/DIV
2
IC601
qh
(CF2)
2 V/DIV, 40 ns/DIV
5.2 Vp-p
30.5 s
4.9 Vp-p
100 ns
MOTOR (LD) board
SW board
SENSOR board
BD81A board
MOTOR (TB) board
DRIVER board
CONNECT board
SUB-TRANS board
SUB-WOOFER board
AMP board
VIDEO OUT board
GAME JACK board
PANEL board
6 STREAM LED board
H/P JACK board
MAIN board
TRANS board
REM board
22
22
HCD-GX450
5-1. BLOCK DIAGRAMS – PANEL SECTION –
IC601(1/2)
SYSTEM CONTROLLER
CN603
D401
+B
-B
F904
12 I-XT1
X601
32.768kHz
13 I-XT2
MP3-TTB
80
IC610
15 CF1
X602
10MHz
16 CF2
28
3
SIRDS-IN
REMOTE
CONTROL
RECIEVER
82
STREM-LED1
74
42
30
POWER RELAY
11
RESET
29
ACCUT
MASTER VOLUME
A
BD/DRIVER
SECTION
25 KEY3
MP3-RESET
6
MP3--REQ
4
MP3-ACK
3
MP3-CS
2
MP3-CS'
1
MP3-CLK
100
MP3-DI
99
MP3-DO
98
CD-CLK
97
SENS
96
CD-DATA
95
XLT
94
XRES
93
XTCN
92
SCOR
5
FUNCTION
KEY
S641-S650
27 KEY1
FUNCTION
KEY
S601-S612
26 KEY2
FUNCTION
KEY
S621-S630
9 VOLUME-IN1
10 VOLUME-IN2
ENCODER
S851
LED
DRIVER
Q610
LED610
80
STREM-LED3
LED
DRIVER
Q612
LED612
81
STREM-LED2
LED
DRIVER
Q611
LED611
77
STREM-LED6
LED
DRIVER
Q614
LED615
78
STREM-LED5
LED
DRIVER
Q615
LED614
79
STREM-LED6
LED
DRIVER
Q613
LED613
76
POWER LED
G01-G13
S1-S21
LED601
F905
AC3
D301-D304
D902
Q902
IC301
REG
-VFL
F906
AC4
VF
D305-D308
D902-905
F907
REG
+3.5V
1
3
IC303
REG
SWITCH
Q361,Q362,Q314,Q315
RELAY
DRIVE
+9V
1
3
D309-D312
IC304
REG
+9V
VF
-VFL
1
3
IC302
REG
+3.5V
1
2
4
+3.3V
PT902
SUB TRANSFORMER
RY901
PT901
POWER TRANSFORMER
IC603
REG
1
5
IC604
RESET 1
3
Q605
RESET
SWITCH
FL601
FLUORESCENT
INDICATOR
TUBE
AC
IN
SCOR
XTCN
XRST
XL-T-CD
CD-DATA
SENS
CD-CLK
MP3-DO
MP3-DI
MP3-CLK
MP3-CS
MP3-CP
MP3-ACK
MP3-REQ
MP3-RESET
MP3-STB
C18
C15
C14
C13
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C18
Q301,Q302
43
45
47
50
52
65
45
47
50
52
65
23
23
HCD-GX450
– MAIN SECTION –
CN201
CD NO SENS
CD OPEN/CLOSE
CD ENCORDER
LM-R
LM-F
TM-R
TM-F
D
BD/DRIVER
SECTION
CN306
Q371
INVERTER
SW ON/OFF
SW OUT
SW LIMITER
SW OUT
SW LIMITER
GND
OVERLOAD/DC
RELAY+
RELAY-
C
SUB-WOOFER
SECTION
E
SUB-WOOFER
SECTION
TUNER
IC101
SOUND PROCESSOR
IC102
BUFFER
61 TUNER_L
19 SI
18 SO
59 GAME-L
9 TAPEA1
11 TAPEB1
15 REC-OUT1
DATA
RCLK
1 CDL
24 I-STREEMA/VACS
75 SYSTEM-MUTE
69 ASM
19
WFR/HP/MIC
18
PROTECT
73
SENSOR
21
CD-OPEN/CLOSE
20
CD ENCORDER
CLK
DATA
91
88
32
VOUT2
33
VOUT1
25
5
1
SW OUT
35
34
BBIN1
BBNF1
31
BBNF2
40
ASMOUT
11 Q5
12 Q6
7 Q1
6 Q0
CD-R
R-CH
R-CH
CD-L
R-CH
FAN
IC371
SP DRIVER
IC104
BUFFER
9
4
IC201
SELECTOR
IC601(2/2)
SYSTEM CONTORLLER
IC441
POWER AMP
5
13
4
11
RELAY
DRIVE
Q485-Q488
OVERLOAD
DET
Q441,Q442
OVERLOAD
DET
Q481,Q482
R-CH
R-CH
RY441
CN443
3 DATA
DO
5 LCK
LCH
4 CLK
18 SO
CLK
7
8
SOL-B
SOL-B
SOL-A
MOTOR
6 SOL-A
MOTOR
IC602
VIDEO BUFFER
L
R
GAME INPUT
VIDEO OUT
JK441
Q106
BUFFER
Q107
BUFFER
Q327
BUFFER
MUTE
SWITCH
MUTE
STK
-VFL
Q108
SWITCH
AC4
+B
+10V
Q308,
Q309,Q313
Q105
+Vcc
Q303
Q489
FAN
DRIVE
Q310-Q312
OVERHEAT
DET
Q483,Q484
TH441
Q101-Q104
SWITCH
CD-MUTE
Q304-Q307
TUNER-L
TUNER-R
DO
DI
CLK
CE
TUNED
STEREO
TU-MUTE
DO
DI
CLK
CE
TUNED
STEREO
Q351,Q352
J804
J803
VIDEO
VIDEO
R-CH
L
R
BIAS
OSC
Q321
Q324
+9V
STK
CD-MUTE
R-CH
REC SW
CONT
7
P/B SW
R-CH
L
R
HP2
HP1
L
R
HRP2
HRP1
HE1
DECK-B
SWITCH
Q322,Q323
L101
SWITCH
Q308,Q309
Q313
10 Q4
FAN
17 Q11
LM-R
13 Q7
LM-F
14 Q8
TM-R
15 Q9
TM-F
16
3
4
5
Q10
DATA
CLOCK
LCH
B
BD/DRIVER
SECTION
J801
PHONES
FAN
DECK-A
TAPE
MECHANISM DECK
Q603
I-REEL-A
23
22
70
4
TAPE B START+
TAPE A START+
SOLA
SOLA
A-PHOTO
PWDEWC B
MODE B
MODE A
B HALF
A HALF
I-REEL-B
71
CLK
84
85
86
CE
DI
DO
LCH
87
B-PHOTO
A TRIG
DRIVE
3 SOLB
SOLB
Q601
2 MOTOR
SOLA
CLK
CE
68 STEREO
67 TUNED
STEREO
TUNED
DATA
RCLK
DO
83
DI
LCH
SOLB
MOTOR
COMP
CAP M
DRIVE
Q602
B TRIG
DRIVE
56
55
SAOUT1
SAOUT2
30
BBNF2
SWITCH
SWITCH
DEF
SPEAKER
• Signal Path
• R-CH is omitted due to same as L-CH
: TUNER
: CD
: PB(DECK A)
: PB(DECK B)
: AUDIO
: REC(DECK B)
24
24
HCD-GX450
– BD/DRIVER SECTION –
CN201
MP3STB
MP3REQ
MIACK
MIACK
MICK
MIDIO
MILP
MICS
MP3RST
SRMSTB
SCOR
SENS
CLOCK
XLT
DATA
XRST
XTACN
SCOR
SENS
CLOCK
XLT
DATA
XRST
XTACN
LOUT
ROUT
DOUT
A
PANEL
SECTION
B
MAIN
SECTION
IC731
(TABLE SENSOR)
CN701
IC701
(LD)MOTOR DRIVER
4
2
2
9
11
RIN
FIN
OUT1
OUT2
IC712
TBL MOTOR DRIVER
4
2
2
9
7
7
RIN
FIN
OUT1
OUT2
D
MAIN
SECTION
LMR
LMF
TM-R
TM-F
TBL ADDRESS SW
E-1
E-2
E-3
OPEN SW
Q731
M751(LOADING)
M741(TBL)
RE701
S751
(LEVER SW)
ROTARY
ENCODER
E-3
E-2
E-1
SWITCH
M
M
+3V
: CD
• Signal Path
• R-CH is omitted due to same as L-CH
OPTICAL PICK-UP
BLOCK
(KSM-215DCP/C2NP)
LD
DRIVER
Q10
+1.7V
+3.3V
LD
GND
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
IC251
SW101
X171
16.9MHz
+3.3V
SL/SP MOTOR
DRIVER
IC101
RF AMP
16
7
15
17
18
VR
PD
19
20
21
22
5
9
3
24
MUTE
CH2OUT-F
CH1FIN
CH1RIN
CH2FIN
SFDR
OPIN+
CH2OUT-R
CH1OUT-R
CH1OUT-F
CH4OUT-F
CH4OUT-R
CH3OUT-R
CH3OUT-F
M
M
M101
(SPINDLE)
M102
(SLED)
VCC
VC
A
B
C
D
E
F
DETECTOR
A
B
E
19
F
20
LD
36
PD
37
TFDR
11
SSTP
7
FFDR
13
CH3FIN
30
MPD
6
95
XTACN
100
XRST
102
DATA
104
XLAT
105
CLOCK
86
AOUT2
81
AOUT1
71
DOUT
61
PCMD1
62
LRCK1
63
LRCK
65
PCMD
DIGITAL SIGNAL
IC301
PROCESSOR
21
40
SDO0
11
LRCKIA
16
SFSY/LRCK1B
19
SDIO
14
77 XTAO
78 XTAI
55
VDD
VDD
VDDM
26
27
C
28
D
29
107
SENS
XTACN
XRST
DATA
XLAT
CLOCK
SENS
113
GFS
114
C2PO
2
3
1
FOK
TRDR
12
10
SRDR
CH3RIN
29
CH2RIN
FRDR
14
XRST
100
66
BCK
60
BCK1
BCKIA
15
SBSY/BCK1B
18
6
3.3V
IC303
8
5
1
3
STANBY
36
PO11/BUCK/AD1
8
MIACK
7
MICK
6
MIDIO
4
MICS
5
MILP
2
RESET
41
SRMSTB
115
SCOR
SCOR
REG
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