Read Sony HCD-RG88 Service Manual online
HCD-RG88
25
25
7-3.
BLOCK DIAGRAM – MAIN Section –
–
GEQ DATA
GEQ CLK
81 82
M891
(FAN)
(FAN)
+
–
+
+
–
+
–
+
+
FRONT SPEAKER
IMPEDANCE
USE 6–16Ω
L
R
SURROUND
SPEAKER
IMPEDANCE
USE 24Ω
L
R
PHONES
J631
RY501
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (3/4)
R-ch is omitted due to same as L-ch.
CD L-CH
A
(Page 23)
TAPE L-CH
C
(Page 24)
TUNER L-CH
B
(Page 24)
T501
D507
D511
FAN MOTOR
DRIVE
Q891, 892
FAN MOTOR
ON SWITCH
Q831
OVER LOAD
DETECT SWITCH
Q510
PROTECT SWITCH
Q502
OVER LOAD
DETECT SWITCH
Q509
OVER LOAD
DETECT
Q501, 551
DC DETECT
SWITCH
Q507, 508
M
HEADPHONE MUTING
Q812, 862
MUTING CONTROL
SWITCH
Q861
RY502
+
+
+
TH701
+
D502
MUTING
Q103
MUTING CONTROL
SWITCH
Q504, 505
STANDBY
SWITCH
Q503, 504, 581
R-CH
D841
R-CH
R-CH
18
15
17
16
OUT1
VOLIN1
14
22
21
TOUT1
VOLUME
CONTROL
SOUND
CONTROL
CIRCUIT
INPUT
SELECT
SWITCH
+
R-CH
8
+
R-CH
R-CH
R-CH
INPUT SELECT SWITCH,
TONE CONTROL,
ELECTRICAL VOLUME
IC102
IND1
INB1
INA1
INC1
6
4
3
2
INEX1
SWOUT
BB B1
BB A1
RECB1
DATA
CLOCK
7
5
24
SAOUT
MIC
19
+
CPU
INTERFACE
R-CH
J750
L
R
MD/VIDEO
(AUDIO) IN
R-CH
J601
J401
L
R
GAME
INPUT
REC L-CH
D
(Page 24)
SPEANA
(Page 26)
MIC
AUDIO
VIDEO OUT
VIDEO
J721
MIC AMP
IC722 (1/2)
FEED BACK
SWITCH
Q101
SIGNAL PATH
: TUNER (FM/AM)
: CD PLAY
: TAPE PLAY
: MD/VIDEO (AUDIO) IN
: GAME INPUT (AUDIO)
: GAME INPUT (AUDIO)
: GAME INPUT (VIDEO)
: REC
: MIC INPUT
SURROUND
SPEAKER PROTECT
RELAY DRIVE
Q513
FRONT SPEAKER
PROTECT
RELAY DRIVE
Q512
–2
–1
POWER AMP
IC501
RV722
MIC LEVEL
MIC
CONTROL
Q721
A +10V
MIC AMP
IC722 (2/2)
E
+
SUB WOOFER
OUT
IMPEDANCE
USE 8Ω
TM801
RY801
SUB WOOFER
PROTECT
RELAY DRIVE
Q824
–1
–2
OVER LOAD
DETECT SWITCH
Q511
OVER LOAD
DETECT SWITCH
Q825
87
FRONT-RELAY
97
SW RELAY
80
LINE-MUTE
86
LINK-RELAY
78
HP MUTE
79
HP-DETECT
88
PROTECTOR
83
STK-MUTE
TEMPERATURE
DETECT SWITCH
Q505, 506
BUFFER
IC901 (2/2)
LOW-PASS
FILTER
IC901 (1/2)
9
7
4
VOLUME
CONTROL
2
8
LINE AMP
IC903 (1/2)
FILTER AMP
IC903 (2/2)
AGC
Q905
MUTING
Q999
OVER LOAD
DETECT
Q1004, 1054
STANDBY
SWITCH
Q1001-1003
LINE AMP,
ELECTRICAL VOLUME
IC902
SUB WOOFER AMP
IC502 (1/2)
SUB WOOFER AMP
IC502 (2/2)
1
AD-KEY
7
SW-SOLID-LED
5
SW-LINK-LED
94 SW-AD-KEY
59 SW-ON-LED
71 SW-LINK-LED
72
SW-MATRIX-
SURR-1-LED
SW-MATRIX-
SURR-2-LED
SURR-1-LED
SW-MATRIX-
SURR-2-LED
60
4
SW-MTRX-SURR-LED
6
SW-WIDE-LED
2
VOLUME
CN101
(TO SS-WGV8)
SYSTEM CONTROL
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