Block Diagram - Main Section - Sony HCD-RG88 Service Manual

7-3. BLOCK DIAGRAM – MAIN Section –
REC L-CH
D
(Page 24)
J750
L
MD/VIDEO
8
(AUDIO) IN
R
R-CH
+
CD L-CH
A
(Page 23)
IND1
6
INB1
INPUT
4
TUNER L-CH
INC1 SELECT
B 5
(Page 24)
SWITCH
INA1
3
SOUND
TAPE L-CH CONTROL
C
(Page 24)
CIRCUIT
INEX1
7
2 19
J601
L
AUDIO
J401
R R-CH
GAME
VIDEO OUT
INPUT
VIDEO
RV722
MIC LEVEL
J721
MIC AMP MIC AMP
MIC IC722 (1/2)
IC722 (2/2)
MIC
CONTROL
Q721
A +10V
SPEANA
E
(Page 26)
CN101
SYSTEM CONTROL
(TO SS-WGV8)
1
AD-KEY
7
SW-SOLID-LED
5
SW-LINK-LED
4
SW-MTRX-SURR-LED
6
SW-WIDE-LED
2
VOLUME
FEED BACK
INPUT SELECT SWITCH,
SWITCH
TONE CONTROL,
Q101
ELECTRICAL VOLUME
IC102
16 17
+
R-CH R-CH
OUT1
18
TOUT1 VOLIN1
VOLUME
14 15
CONTROL
R-CH
+
R-CH
MUTING
CPU
Q103
INTERFACE
24 21 22
81 82
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (3/4)
PROTECTOR 88
FRONT-RELAY 87
STK-MUTE 83
HP MUTE 78
HP-DETECT 79
LINK-RELAY 86
SW RELAY 97
94 SW-AD-KEY
59 SW-ON-LED
MUTING CONTROL
SWITCH
71 SW-LINK-LED
Q504, 505
SW-MATRIX-
72
SURR-1-LED
LINE-MUTE 80
SW-MATRIX-
60
SURR-2-LED
LOW-PASS
BUFFER
FILTER 2 4 7
IC901 (2/2)
IC901 (1/2)
LINE AMP,
ELECTRICAL VOLUME
IC902
R-CH
D841
POWER AMP
IC501
R-CH
STANDBY
SWITCH
Q503, 504, 581
R-CH
OVER LOAD
DETECT
Q501, 551
DC DETECT
SWITCH
Q507, 508
D502
OVER LOAD OVER LOAD
+
DETECT SWITCH DETECT SWITCH
Q509 Q510
PROTECT SWITCH
Q502
TEMPERATURE
DETECT SWITCH
Q505, 506
FAN MOTOR FAN MOTOR
ON SWITCH DRIVE
Q831 Q891, 892
TH701
VOLUME LINE AMP FILTER AMP
9
CONTROL IC903 (1/2) IC903 (2/2)
AGC MUTING
Q905
8
25 25
HEADPHONE MUTING
Q812, 862
MUTING CONTROL
SWITCH
Q861
–2
–1
RY501
RY502
FRONT SPEAKER
OVER LOAD
PROTECT
DETECT SWITCH
SURROUND
RELAY DRIVE
Q511
SPEAKER PROTECT
Q512
RELAY DRIVE
Q513
M891
(FAN)
M
OVER LOAD
DETECT SWITCH
Q825
SUB WOOFER AMP SUB WOOFER AMP
IC502 (1/2) IC502 (2/2)
Q999
STANDBY OVER LOAD
SWITCH DETECT
Q1001-1003 Q1004, 1054
HCD-RG88
J631
PHONES
T501
+
L
–
FRONT SPEAKER
IMPEDANCE
+
USE 6–16Ω
R
–
+
L
SURROUND
–
SPEAKER
IMPEDANCE
+
USE 24Ω
R
TM801
–1
+
SUB WOOFER
OUT
–2
IMPEDANCE
USE 8Ω
–
RY801
SUB WOOFER
PROTECT
RELAY DRIVE
Q824
R-ch is omitted due to same as L-ch.
SIGNAL PATH
: TUNER (FM/AM)
: TAPE PLAY
: REC
: CD PLAY
: MD/VIDEO (AUDIO) IN
: GAME INPUT (AUDIO)
: GAME INPUT (VIDEO)
: MIC INPUT