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HCD-GRX9900/RXD9
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
Q611 – 616
RESET
73
L SEL
7
GRID DRIVE
45
G1
Q610
LED DATA
5
LED SCK
3
LED LAT
4
S611 – 630,
S637 – 650, 801 – 807
REMOTE CONTROL
RECEIVER
1
SIRCS
IC602
ROTARY
2
JOG-A
S601
ENCODER
(JOG DIAL)
8
JOG-B
S601
S602
ROTARY
9
VOL-A
ENCODER
VOLUME
10
VOL-B
I2C DATA
78
S602
I2C CLK
79
D609
(RIGHT)
LED DRIVE
22
GRADATION R/WAKE UP
Q607
LED DRIVE
15
GRADATION L
Q608
D608
(LEFT)
D608, 609
(FOR ILLUMINATION DISPLAY)
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 – 615, 619,
14
CLK
D620, 622 – 626,
D631 – 634, 801 – 803
15
STB
SYSTEM CONTROLLER
IC501 (4/4)
(RXD9)
FL SW
42
STBY RELAY 43
30
IIC-DATA
IIC-CLK
29
18
WAKE UP
CD-POWER
5
M62493FP (IC101),
CD SENSOR CIRCUIT B+
POWER
2
D804
LED DRIVE
STBY LED 39
Q604, 620
I/u
LED DRIVE
D636
TIMER LED 26
Q605
TIMER SELECT
– 25 –
–26V
(FL DRIVER (IC601) B–)
(RXD9)
(GRX9900)
D501, 502
+5V
SYSTEM CONTROLLER
(IC501) B+
D509
+5V (STBY)
(RXD9)
(PANEL SECTION B+)
D925
CD D+5V, CD A+5V
B+ SWITCH
CD MECHANISM DECK
Q907, 908
SECTION B+
(GRX9900)
(RXD9)
D923
D+5V
B+ SWITCH
Q904, 905
(GRX9900)
CONTROL SWITCH
(RXD9)
D922
D+5V
(TAPE DECK SECTION B+)
(GRX9900)
(RXD9)
(CD MOTOR SECTION B+)
D924
LED +5V
(TC MOTOR SECTION B+)
(PANEL SECTION B+)
(GRX9900)
(FM/AM TUNER UNIT B+)
(RXD9)
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
TO FLUORESCENT
VF1
INDICATOR TUBE
VF2
(FL601)
(GRX9900)
B+
RECT
D832
B–
POWER AMP (IC801),
PROTECTOR CIRCUIT
B+
RECT
D831
B–
(RXD9)
(GRX9900)
–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
(GRX9900)
(GRX9900: Mexican/RXD9)
AC IN
VOLTAGE
SELECTOR
S951
(EXCEPT GRX9900: Mexican/RXD9)
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