Block Diagram - Display/Key Control/Power Supply Section - Sony HCD-GRX70 Service Manual

HCD-GRX70/GRX70J/RXD80
7-4. BLOCK DIAGRAM – DISPLAY/KEY CONTROL/POWER SUPPLY Section –
FLUORESCENT INDICATOR TUBE DRIVER,
KEY CONTROL
IC601
S LOW FREQ (BPF0) 16
BPF1 17
BPF2 18
BPF3 19
BPF4 20
GRID DRIVE
ALL BAND (L+R) 21
Q607 – 612
RESET 73
L SEL 7
GRID DRIVE
45
GR1
Q613
LED DATA 5
LED SCK 3
LED LAT 4
S611 – 630,
S638 – 651, 751 – 757
REMOTE CONTROL
RECEIVER 1 SIRCS
IC602
ROTARY
2 JOG-A
S601
ENCODER
(JOG DIAL)
8 JOG-B
S601
S602
ROTARY 9 VOL-A 78
I2C DATA
ENCODER
VOLUME
10 VOL-B I2C CLK 79
S602
WAKE UP 22
05
72 70
X601
12.5MHz
(Page 23) (Page 23)
D E
BAND-PASS FILTER
IC603
F01
17
F02 LINE
16
IN
F04
14 DET 4
B.P.F.
F05
13
F06
12
L+R REC IN
11 6
DET
LED DRIVER
IC604
B+ SWITCH
LED +5V
Q601, 602
Q603
13 DATA
D611 – 616, 619 – 622, 624,
14 CLK
D627 – 631, 751 – 753
15 STB
SYSTEM CONTROLLER
IC501 (4/4)
(RXD80)
FL SW 42
STBY RELAY 43
30 IIC-DATA
29 IIC-CLK
18 WAKE UP
CD-POWER 5
M62493FP (IC101),
CD SENSOR CIRCUIT B+
POWER 2
D754
LED DRIVE
STBY LED 39
Q604, 605
I/u
LED DRIVE
D632
TIMER LED 26
Q606
TIMER SELECT
– 25 –
–26V
(FL DRIVER (IC601) B–)
(RXD80)
(GRX70/GRX70J)
D501, 502
+5V
SYSTEM CONTROLLER
(IC501) B+
D509
+5V (STBY)
(RXD80)
(PANEL SECTION B+)
D925
CD D+5V, CD A+5V B+ SWITCH
CD MECHANISM DECK Q907, 908
SECTION B+ (GRX70/GRX70J)
(RXD80)
D923
D+5V
B+ SWITCH
Q904, 905
(GRX70/GRX70J)
CONTROL SWITCH
(RXD80)
D922
D+5V
(TAPE DECK SECTION B+)
(GRX70/GRX70J)
(RXD80)
(CD MOTOR SECTION B+)
D924
LED +5V
(TC MOTOR SECTION B+)
(PANEL SECTION B+)
(GRX70/GRX70J)
(FM/AM TUNER UNIT B+)
(RXD80)
SUB POWER TRANSFORMER
+5V REGULATOR RECT
IC11 D12 – 15
FL ON/OFF
–26V REGULATOR RECT
SWITCH
Q13 D17 – 20
Q12, 17
FL ON/OFF
SWITCH
Q14 – 16
RELAY DRIVE
POWER TRANSFORMER
(GRX70/GRX70J)
TO FLUORESCENT
VF1
INDICATOR TUBE
VF2
(FL601)
B+
RECT
D832
B–
POWER AMP (IC801),
PROTECTOR CIRCUIT
B+
RECT
D831
B–
(RXD80)
(GRX70/GRX70J)
–26V REGULATOR RECT
Q971 D971
+5V
REGULATOR
RECT
IC902
D901 – 904
RECT
D907 – 910
+7V
REGULATOR
+7V
Q901, 902, 913
TC, PANEL,
AUDIO
–7V
REGULATOR
–7V
Q914, 951, 952
REGULATOR
Q903, 923
FAN MOTOR B–
D405 – 407
+7V
CD M+7V
REGULATOR
IC901
TC M+12V
+10V +12V
ST +10V
REGULATOR REGULATOR
Q909 IC903
– 26 –
T11
AC IN
RY11
Q11
T951
GRX70/
GRX70J
GRX70: Thai, Mexican,
Australian/RXD80
AC IN
VOLTAGE
SELECTOR
S951
GRX70: E2, E3, Singapore, Hong Kong,
Taiwan, Argentine/GRX70J