Block Diagram - Main Section - Sony CFD-CD777SMK2 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
6-3. BLOCK DIAGRAM – MAIN Section –
MIC301
MIC
J302
MIX MIC
J303 L
TV/LINE IN
R
MUTING MUTING
MUTING
G
(Page 22) CONTROL SWITCH Q101, 110,
Q314 Q201, 210
TUNER L-CH
C
(Page 19)
CD L-CH
A
(Page 20)
FUNCTION SWITCH, AGC,
HP601
(PB)
A-DECK-L
L-CH 1
T E
L 1 3 9 4 2 2 9 6 5 1 3
DECK A
R-CH R-CH
HRP601
(REC/PB)
B-DECK-L
32
L-CH
VREF
DECK B
REC
R-CH R-CH
S304 (1/4)
REC/PB
PB
HE601
(ERASE) AU +7.5V
T301
DECK B BIAS OSC
TR-C
29
R-CH
TR-B
30
Q330
Q330, 335
Q335
SWITCHING
S305 (1/2)
w w w
ISS, FM MODE
AU +7.5V
.
REC
B
(Page 20)
R-CH
+
12 10 9
REC/PB EQ AMP,
REC BIAS OSC
IC101
MIC
AMP
R-CH
INPUT
SELECT
SWITCH
EQ
AMP
REC AGC
EQ AMP CIRCUIT
2 3 27 28
OFF
N.F.
S304 (4/4)
ON
REC/PB
REC
S303
PB
HIGH SPEED
DUBBING
AU +7.5V
S601
(DECK B PLAY)
1 (ST)
S304 (3/4)
2 (ST)
REC/PB
x a o
y
REC PB
3 (MONO)
i
REC MUTING
Q305
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8
7
GRAPHIC EQUALIZER AMP
LINE 15dB
OUT-L L-IN
14 17
Q Q
3 7 6 3
LINE 15dB
OUT-R R-IN
R-CH
15 6
SWITCH
CONTROL
29dB 29dB
LOGIC
CIRCUIT
8 15
R-CH
8
IN
LEVEL METER
LED DRIVE
IC104
S605
OUT1 – OUT5
(DECK A PLAY)
1 – 4, 6
CD
TV/LINE IN
D101 – 105
(L-CH LEVEL METER)
RADIO
DUBBING
RV302 BALANCE
TAPE
TAPE SEPPED
(CD/RADIO OFF)
(NORMAL)
MOTOR B+
S302 (2/3)
NORMAL/HIGH
FUNCTION M
SPEED CONTROL
u 1 6 3
Q307, 308
.
21 21
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2 4
9 9 8
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: FM
: CD
: TAPE PLAY (DECK A)
: TAPE PLAY (DECK B)
: TAPE REC (DECK B)
: MIC INPUT
IC102
L-OUT
13
1 5 1 5 0 8 9 2 4
+
GRAPHIC
EQUALIZER
R-OUT
10
RV301
VOLUME
VOL
CONTROL
4
MUTING
AGC
SWITCH
Q312
Q304
3 1, 2, 20 – 22
D322
SWITCHING
Q313
D329
D329 – 332
LIVE
D301 – 305
DSS D330
SWITCHING
PARTY
Q301
D306 – 320
S301 (1/2)
PRESET MODE
RV303
MANUAL
DISCO
5BAND GRAPHIC
EQUALIZER
PARTY
LIVE
m
M601
(CAPSTAN/REEL)
c o
CFD-CD777SMK2
2
9 9
L-CH
E
(Page 22)
9 8 2 9 9
S301 (2/2)
PRESET MODE
R-CH
F
(Page 22)
BUFFER
MANUAL
Q302, 303
DISCO
PARTY
LIVE
D331
DISCO
D332
MANUAL
COM +5V