Block Diagram - Main Section (1/2) - Sony HCD-XB66 Service Manual

HCD-XB66/XB660
7-4. BLOCK DIAGRAM – MAIN Section (1/2) –
J761
MIX MIC
MIC AMP
IC760 (1/2)
RV760
MIC LEVEL
J101 (1/2)
PHONO EQ
L
AMP
IC101
PHONO IN
R R-CH
FUNCTION SWITCH
L 12
VIDEO/MD
14
(AUDIO) IN
15
R R-CH
11
ATTENUATOR
(–5dB)
Q101
R-CH
CD-L
(Page 28) A
PB-L
B
(Page 30)
FM/AM TUNER UNIT
ANTENNA
FM 75Ω
FM ANT ST-L
ST-R R-CH
FM ANT
AM ANT ST-MUTE
STEREO
AM ANT
TUNED
AM
ST-DIN
ST-DOUT
ST-CLK
ST-CE
MIC AMP
IC760 (2/2)
IC102
KEY
IN-2B
69
IN2
INPUT +
65
IN-2A
SELECT
SOUND
13 71
CONTROL
CIRCUIT
R-CH R-CH
INH A B
6 10 9
CPU INTERFACE
29 28 30 33 32 34
ATTENUATOR
CONTROL SWITCH
(Page 35)
Q102, 103
(Page 35)
(Page 36)
(Page 36)
68 65 66 67 69 70 72 54 44 45 3
05
– 31 –
R-CH
62 61
REC REC
2A 2B
KEY VOL
GRAPHIC
F OUT2
OUT2 IN2
EQUALIZER VOLUME
64 45 44
CONTROL CONTROL
CIRCUIT
INPUT SELECT SWITCH,
GRAPHIC EQUALIZER CONTROL,
COMMAND ELECTRICAL VOLUME
IC201
+
R-CH
SPEANA
MIXING AMP
IC231
R-CH
SPEANA
D
DATA, CLK
F
POWER
K
CD-POWER
L
X302
X301
32.768kHz
5MHz
10 11 13 14 46 98 55 56
SYSTEM CONTROLLER
IC301 (3/3)
(Page 30)
REC-L
C
R-CH
VOL BB BUF
BASS BOOST
OUT2 IN2 OUT2
42
43 CONTROL 38
CIRCUIT
MUTING
Q204
R-CH
39 41, 40
FEED BACK
SWITCH
Q203
D291
DBFB CONTROL
SWITCHING
R-CH
SWITCH
Q201
Q202
R-CH
MUTING CONTROL
SWITCH
Q231, 232
RESET SIGNAL
99 2 1 20
100
– 32 –
• SIGNAL PATH
: CD PLAY
: TAPE PLAY
L J101 (2/2)
: RECORD
VIDEO/MD
(AUDIO) OUT
: TUNER (FM/AM)
R
: MIC INPUT
L-CH
G
(Page 33)
FEED BACK
H
(Page 33)
+5V
GENERATOR
IC302
RESET
E
(Page 35)
RESET
SWITCH
Q301
15
6
(Page 34)
RELAY
J
STK-MUTE
I
(Page 33)