Block Diagram - Main Section - Sony HCD-GRX9900 Service Manual

7-3. BLOCK DIAGRAM – MAIN Section –
(GRX9900: Saudi Arabia)
DIGITAL ECHO
IC711
J711
MIX MIC
MIC AMP
IC712 (1/2)
RV712
MIC LEVEL
CD-L
A
(Page 20)
IN E2
65
PB-L
IN D2
B
(Page 22) 66
INPUT
IN B2
68
SELECT
IN A2
SWITCH
69
IN C2
67
J101 (1/2)
L R-CH
VIDEO
(AUDIO) IN
R R-CH
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
ELECTRICAL VOLUME
L
IC101
MD IN
R R-CH
SPEANA
(Page 25) D
(RXD9: AEP, UK)
FM 75
COAXIAL
FM/AM TUNER UNIT
(GRX9900/RXD9: US)
FM ANT ST-L
FM
75
ST-R R-CH
FM ANT
ST-MUTE
AM ANT STEREO
AM TUNED
AM ANT
ST-DIN
ST-DOUT
ANTENNA
ST-CLK
ST-CE
(RXD9: AEP, UK)
RDS-DATA
RDS-INT
• SIGNAL PATH
: TUNER (FM/AM)
: CD PLAY
: TAPE PLAY
: RECORD
: MIC INPUT
05
RESET
E
(Page 25)
RV711
ECHO
LEVEL
MIC AMP
IC712 (2/2)
2 58
GRAPHIC EQUALIZER
+
CONTROL CIRCUIT
+
R-CH
SOUND
CONTROL
L+R
+
CIRCUIT
30
60 5 59 6
493-DATA 47
493-CLK 48
493-LATCH 38
D607
DBFB-H/L 7
D644
BASS FREQ. 44
SYSTEM CONTROLLER
IC501 (3/4)
49 ST-MUTE
50 STEREO
TUNED
51
ST-DOUT
53
54 ST-DIN
55 ST-CLK
1
STK-MUTE
52 ST-CE
21 RDS-DATA
20 RDS-INT
LINE-MUTE 6
AC-CUT 22
RESET SWITCH
RESET 12
Q501
11 XC-OUT
X601
PROTECTOR 27
32.768kHz
XC-IN
10
F-RELAY
3
13 X-OUT
X613
16MHz
15 X-IN RY-SW 36
– 23 –
R-CH
+
57
VOL
BASS BOOST
F OUT2 IN2
VOLUME
CONTROL
42 41
CONTROL
CIRCUIT
CPU
COMMAND
INTERFACE
+
38, 39
33 32 34
DBFB CONTROL
SWITCH
Q111
POWER AMP
IC801
MUTING
Q113
STANDBY SWITCH
R-CH
DETECT SWITCH
Q803, 804, 881 TH831
+5V
MUTING CONTROL
SWITCH
OVER LOAD
Q508, 509
DETECT
Q801
RESET SIGNAL
GENERATOR
IC502
DC DETECT
+
SWITCH
Q433, 434
R-CH
SUPER
WOOFER
72
D191
BUF
OUT2
PROTECT
36
SWITCH
Q192
37
FEED BACK
R-CH
SWITCH
Q112
D141
+
R-CH
–1
BASS FREQUENCY
CONTROL SWITCH
Q201
–2
R-CH
R-CH
R-CH
R-CH
Q411, 471
TEMPERATURE
Q831, 832
MUTING CONTROL
SWITCH
Q412
D803
+
OVER LOAD OVER LOAD
DETECT SWITCH DETECT SWITCH
R-CH
Q432 Q437
PROTECT SWITCH
Q439
PROTECT SWITCH
Q435, 436
– 24 –
HCD-GRX9900/RXD9
REC-L
C (Page 22)
L
MD OUT
R-CH R
J101 (2/2)
J191
SUPER
MUTING
WOOFER
Q191
(GRX9900/RXD9: US)
M501
(FAN)
FAN MOTOR
M
DRIVE
Q401, 402
TM401
SPEAKER
IMPEDANCE
USE 6 – 16
+
L
–
+
R
–
MUTING
J701
PHONES
RY401
RELAY
DRIVE
Q431