Block Diagram - Main Section - Sony HCD-GX8000 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
7-3. BLOCK DIAGRAM – MAIN Section –
REC L-CH
D
(Page 24)
J750
L
MD/VIDEO
(AUDIO) IN
R
R-CH
CD L-CH
A
(Page 23)
IND1
6
INB1
INPUT
4
TUNER L-CH
SELECT
INC1
B
(Page 24) 5
SWITCH
INA1
3
TAPE L-CH
C
(Page 24)
INEX1
7
2
J601
L
AUDIO
J401
R
R-CH
GAME
VIDEO OUT
INPUT
VIDEO
T E
L 1 3 9 4 2 2 9 6 5 1 3
RV722
MIC LEVEL
J721
MIC AMP MIC AMP
MIC IC722 (1/2)
IC722 (2/2)
MIC
CONTROL
Q721
A +10V
SPEANA
(Page 26) E
• 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
w w w
.
INPUT SELECT SWITCH,
TONE CONTROL,
ELECTRICAL VOLUME
IC102
8 16 17
+ +
R-CH R-CH
OUT1
TOUT1 VOLIN1 18
VOLUME
14 15
CONTROL
SOUND
CONTROL R-CH
+
CIRCUIT
R-CH
CPU
INTERFACE
19 24 21 22
81 82
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y
i
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8
R-CH
D841
FEED BACK
SWITCH
Q101
POWER AMP
IC501
R-CH
MUTING
Q103
STANDBY
OVER LOAD
SWITCH
DETECT
Q503, 504, 581
R-CH
Q501, 551
MUTING CONTROL
SWITCH
Q504, 505
DC DETECT
SWITCH
Q507, 508
D502
OVER LOAD
+
DETECT SWITCH
Q Q
3 7 6 3
TEMPERATURE
DETECT SWITCH
Q505, 506
FAN MOTOR
ON SWITCH
Q831
TH701
80 83 88
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (3/4)
u 1 6 3
.
25 25
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2 4
9 9
HEADPHONE MUTING
Q812, 862
MUTING CONTROL
SWITCH
Q861
–2
–1
RY501
FRONT SPEAKER
OVER LOAD
PROTECT
DETECT SWITCH
RELAY DRIVE
Q509 Q510, 511
Q512
PROTECT SWITCH
1 5 1 5 0 8 9 2 4
Q502
M891
(FAN)
FAN MOTOR
M
DRIVE
Q891, 892
87 78 79
m
c o
HCD-GX8000/RG77
2
8 9 9
J631
PHONES
T501
+
L
–
FRONT SPEAKER
IMPEDANCE
+
USE 6–16Ω
R
–
+
L
SURROUND
–
SPEAKER
+ IMPEDANCE
USE 24Ω
R
–
RY502
SURROUND
SPEAKER PROTECT
RELAY DRIVE
Q513
9 8 2 9 9
86