Sony HCD-GRX9000 / HCD-RX900 / MHC-GRX9000 / MHC-RX900 Service Manual ▷ View online
HCD-GRX9000/RX900
7-5.
BLOCK DIAGRAM – MAIN Section (2/2) –
– 29 –
– 30 –
05
(Page 28)
L-CH
POWER AMP
IC821 (1/2)
OVER LOAD
DETECT
Q801, 851
OVER LOAD
DETECT SWITCH
Q432, 437
RELAY DRIVE
Q431
PROTECTOR
Q435, 436
FAN MOTOR
DRIVE
Q401, 402
R-CH
17
13
1
10
6
-1
-2
+
–
–
–
+
POWER AMP
IC821 (2/2)
STANDBY
SWITCH
Q575
J421
PHONES
TM401
SPEAKER
IMPEDANCE
USE 8 – 16
Ω
R
L
D811
D141
L-CH (+)
L-CH (–)
R-CH (+)
R-CH (–)
RY401
RY402
M401
(FAN)
(FAN)
-1
-2
POWER AMP
IC801 (1/2)
OVER LOAD
DETECT
Q821, 871
D831
D404
D409
D403
D408
17
13
1
10
6
POWER AMP
IC801 (2/2)
F
(Page 28)
FEED BACK
G
(Page 28)
STK-MUTE
H
(Page 28)
RELAY
I
+
M
• SIGNAL PATH
: TUNER (FM/AM)
DC DETECT
SWITCH
Q433, 434
TEMPERATURE
DETECT SWITCH
Q891, 892
THP891
HCD-GRX9000/RX900
7-6.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
– 31 –
– 32 –
REGULATOR
CONTROL SWITCH
Q903
D914
D501, 502
D507
POWER
(Page 27)
L
CD-POWER
(Page 27)
M
D405 – 407
D+5V
AUDIO D+5V
B+
SWITCH
Q905, 906
–30V
REGULATOR
Q910
–30V
FL DRIVER (IC601)
CAPSTAN MOTOR DRIVE CIRCUIT,
TRIGGER PLUNGER DRIVE CIRCUIT B+
RECT
D909, 910
+12V
REGULATOR
IC903
+10V
REGULATOR
Q909
–7V
REGULATOR
Q914, 951, 952
+7V
REGULATOR
Q901, 902, 913
+10V
(FM/AM TUNER CIRCUIT B+)
+7V
REGULATOR
IC901
+7V
(CD M+7V)
+5V
REGULATOR
IC902
CD MECHANISM DECK
SECTION B+
B+
SWITCH
Q907, 908
SYSTEM CONTROLLER
(IC501) B+
RECT
D907, 908
RECT
D901 – 904
RECT
D800
D800
VOLTAGE
SELECT SWITCH
S11
VOLTAGE
SELECTOR
S11
AC IN
B+
POWER AMP
(IC801, 821)
POWER TRANSFORMER
T11
B–
+7V
TC, PANEL, AUDIO
–7V
FAN MOTOR B–
VF1
TO
FLUORESCENT INDICATOR TUBE
(FL601)
VF2
REMOTE CONTROL
RECEIVER
IC602
GRID DRIVE
Q621
FLUORESCENT INDICATOR TUBE DRIVE,
LED DRIVE, KEY CONTROL
IC601
FLUORESCENT
INDICATOR TUBE
FL601
BAND-PASS FILTER
IC603
Q603
D+5V
SPEANA-1
36 SPEANA-3
37 SPEANA-4
37 SPEANA-4
GRID DRIVE
Q620
32 L+R
LINE IN
33 SIRCS
ROTARY
ENCODER
S601
ROTARY
ENCODER
S602
21 JOG-A
19 VOL-A
22 JOG-B
20
8
9
VOL-B
X-OUT
X-IN
B+ SWITCH
Q601, 602
LED DRIVE
Q604, 607 – 610,
Q613 – 615, 618
KEY-0 – KEY-3
SPEANA-2
F01
F03
F04
L+R
F02
GR1
(Page 28)
(Page 27)
J
DATA, CLK
(Page 27)
D610, 612, 620 – 625,
D631 – 633, 651, 652
D613 – 618
SPEANA
41
L.SEL 25
GR13 53
SDA
SCL
SCL
DATA
CLK
RESET
RESET
35
23
24
10
34
15
14
4
13
31 SPEANA RESET
RST 18
16
17
26 – 29
SEG1 – SEG24
54 – 69, 72 – 70, 77 – 73
GR2 – GR12
42 – 52
LED1, LED5 – LED8,
LED12 – LED15
79, 3 – 6, 15 – 18
LED9, LED10
11, 12
S601
(JOG DIAL)
S604 – 625, 631 – 642,
S656 – 659
S602
05
=
↔
+
DJ MIX
VOLUME
X601
8MHz
N
K
(Except East European, CIS models)
(East European, CIS models)
– 33 –
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in W and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
®
: Through hole.
•
b
: 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
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• 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.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD
c
: DIGITAL OUT
N
: MIC IN
• Abbreviation
EA
: Saudi Arabia model.
EE
: East European model.
MY
: Malaysia model.
SP
: Singapore model.
7-7.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block.)
C
B
These are omitted.
E
Q
• Indication of transistor.
B
These are omitted.
C
E
Q
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
B
These are omitted.
C
E
Q
– 34 –
(Page 52)
MAIN BOARD
CN102
CN102
Ref. No.
Location
• Semiconductor
Location
7-8.
PRINTED WIRING BOARD – TUNER Section (East European, CIS models only) –
• See page 20 for Circuit Boards Location.
D21
D-1
D41
D-2
D42
E-3
D43
E-3
D1701
F-2
D1702
F-2
D1703
E-2
D1704
F-2
IC21
D-1
IC41
C-3
IC1701
F-1
IC1702
F-3
Q1
D-1
Q2
D-2
Q3
C-2
Q4
C-2
Q5
C-2
Q9
B-1
Q11
B-3
Q12
A-3
Q13
A-2
Q14
A-2
Q1701
E-2
Q1702
F-2
Q1703
F-2
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