Sony HCD-GX470 / HCD-GX570 / MHC-GX470 / MHC-GX570XM Service Manual ▷ View online
HCD-GX470/GX570
25
25
HCD-GX470/GX570
7-3. BLOCK DIAGRAM – AMP Section –
OUT
BUFFER
IC251
E
BASS AGC
G
SW OUT
F
POWER AMP
IC441
MUTING
Q251
OVER LOAD
DETECT
Q441
OVER LOAD
DETECT
Q501
R-CH
MUTING
Q272
BUFFER
Q271
BUFFER
Q276
LINE AMP
Q277
STANDBY
SWITCH
Q489
DC DETECT
Q481, 482
+
+
TEMPERATURE
DETECT
Q483, 484
TEMPERATURE
DETECT
Q503, 507
R-CH
R-CH
R-CH
TH441
+
+
+
POWER AMP
IC501
MUTING
CONTROL SWITCH
Q261
O-SYS-XMUTE
21
O-STK-MUTE
5
I-PROTECTOR
64
O-SWR
22
+
R-CH
PROTECTOR
Q485
RELAY DRIVE
Q486, 488
+
PROTECT
DETECT
Q487
FAN MOTOR
DRIVE
Q043 – 045
FAN MOTOR
DETECT
Q046
RY441
C
HP IN
H
PROTECT
–1
–2
R
L
+
–
–
+
–
–
+
RELAY B+
RY501
D035
M
M001
(FAN)
(FAN)
SPEAKER
PHONES
JK441
+
–
–
SUB WOOFER OUT
JK501
RELAY DRIVE
Q502
SUB WOOFER
SWITCH
Q274
R-CH
J701
SYSTEM CONTROLLER
IC901 (3/4)
: TUNER (FM/AM)
SIGNAL PATH
R-ch is omitted due to same as L-ch.
DC DETECT
Q505, 506
(Page 24)
(Page 24)
(Page 26)
(Page 24)
(Page 24)
HCD-GX470/GX570
26
26
HCD-GX470/GX570
7-4. BLOCK DIAGRAM – PANEL, POWER SUPPLY Section –
REMOTE CONTROL
RECEIVER
IC610
FL701
FLUORESCENT
INDICATOR
TUBE
37 SW LED
KEY1 – KEY3
FLUORESCENT INDICATOR TUBE
/LED DRIVER
IC701 (2/2)
SYSTEM CONTROLLER
IC901 (4/4)
F906
RECT
D902 – 905
PROTECT
DETECT
Q011
RECT
D001 – 004
RECT
D910
D910
D006
S611 – 613,
S621 – 628,
S621 – 628,
S631 – 638
7
O-POWER-RELAY
9
I-AC-CUT
RESET SIGNAL
GENERATOR
IC902
RESET SWITCH
Q901
D902
+3.3V
XM +5.2V
UNREG +16V
EVER +10V
1
I-AC-PULSE
10
I-XRESET
10 I-VOL-A
11 I-VOL-B
45 – 58,
61 – 67
S1 – S21
68 – 80
G1 – G13
19 – 21
LED DRIVE
Q621
D622
SUBWOOFER
69 O-STBY-LED
80 I-XSIRCS-IN
D611
STANDBY
ROTARY
ENCODER
VOLUME
S671
12 I-JOG-A
13
4
I-JOG-B
X2
3
X1
ROTARY
ENCODER
S672
(MULTI JOG)
X701
4.19MHz
14
X2 (16MHZ)
15
X1 (16MHZ)
X902
16MHz
11
XT2 (32.768KHZ)
12
XT1 (32.768KHZ)
X901
32.768kHz
SO1
I-VFD-DATA
9
77
SI1
O-VFD-DATA
8
76
SCK1
O-VFD-CLK
7
78
CE
O-VFD-CE
16
75
XRESET
O-VFD-RESET
6
74
65 I-KEY0
79 I-WAKEUP
S601 – 606
(AC IN)
RY901
POWER ON/OFF
RELAY DRIVE
Q002
CD DSP +1.8V
+1.8V
REGULATOR
IC203
REGULATOR
Q903, 904
AC DETECT
Q902
D008
D001
D301, 302
D908
VDD (+3.3V)
+9V
M+9V
M+7V
F907
RECT
D011 – 014
RECT
D021 – 024
F904
F905
RECT
D401
D401
D007
H
PROTECT
+9V
REGULATOR
IC021
+9V
REGULATOR
IC011
+3.3V
REGULATOR
IC006
+5V
REGULATOR
IC007
XM +5V
+5V
REGULATOR
IC301
RELAY B+
23
O-FRONT-SP-RELAY
B+ SWITCH
Q041, 042
–27V
REGULATOR
Q902
AMP
SECTION
B+
–VFL
VF
VF
PT902
SUB POWER
TRANSFORMER
PT901
MAIN POWER
TRANSFORMER
(GX570)
(Page 25)
HCD-GX470/GX570
27
27
HCD-GX470/GX570
•
Note For Printed Wiring Boards and Schematic Diagrams
•
Indication of transistor
Note on Schematic Diagram:
•
All capacitors are in
µ
F unless otherwise noted. (p: pF)
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.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark :CD PLAY
– XM Board –
no mark : XM
– Other Boards –
no mark : TUNER (FM/AM)
(
under no-signal (detuned) conditions.
– CD Board –
no mark :CD PLAY
– XM Board –
no mark : XM
– Other Boards –
no mark : TUNER (FM/AM)
(
) : CD PLAY
〈〈
〉〉
: TAPE PLAY
{
} : TAPE REC
[
] : XM
∗
: Impossible to measure
•
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.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: TUNER (FM/AM)
J
: CD PLAY
E
: TAPE PLAY (DECK-A)
d
: TAPE PLAY (DECK-B)
G
: REC
O
: XM
f
: AUDIO IN
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side) the parts face are indicated.
•
Circuit Boards Location
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
CD board
SW board
MOTOR (LD) board
SENSOR board
DRIVER board
MOTOR (TB) board
TUNER (FM/AM)
KEY LEFT board
PANEL board
KEY RIGHT board
MIC. AUX. HP board
MAIN board
SUB WOOFER board
POWER board
DECK board
SW-SP board
XM board
(GX570)
(GX570)
TRANSFORMER board
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
pièce por tant le numéro
spécifié.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
HCD-GX470/GX570
28
28
HCD-GX470/GX570
7-5. PRINTED WIRING BOARD – CD Board –
: Uses unleaded solder.
•
See page 27 for Circuit Boards Location.
R256
C257
R260
C206
C205
C322
R323
R322
R321
R324
C223
C321
C268
C267
R271
R203
C226
R201
C227
C110
C108
C102
C203
C204
C101
C274
C202
R207
C215
R202
C201
R423
R421
C424
C276
C210
Q321
C207
C266
C275
C323
C277
C406
R401
C401
C219
R276
C271
C272
C104
C105
C107
C109
C232
C220
X201
IC203
C403
R257
C258
C260
C261
R258
C304
C208
R101
R265
R266
R267
C264
C265
R278
C111
C214
R270
C221
C292
C291
R292
R291
IC201
C217
C218
C224
R451
R102
R103
R104
R105
R107
R108
R109
R110
R111
C451
IC402
C256
C251
C252
C254
C253
R254
R255
R252
R253
CN301
C213
C222
C405
R113
C404
R452
C112
R275
R277
C103
R112
C301
C303
C273
R268
C113
CN102
C230
R250
R280
M401
M402
S201
E
1-868-067-
12
(12)
CD BOARD
(COMPONENT SIDE)
1
3
5
4
1-868-067-
12
(12)
CD BOARD
(CONDUCTOR SIDE)
M
M
1
1
7
14
28
22
8
21
15
30
90
91
120
60
31
61
(SPINDLE)
(LIMIT)
(SLED)
A
MAIN
BOARD
CN301
TP
(RFACI)
TP
(VC)
OPTICAL PICK-UP BLOCK
(KSM-213DCP)
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
(Page 34)
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