Block Diagram -Main Section - Sony CFD-ZW750 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
5-4. BLOCK DIAGRAM — MAIN SECTION —
CD SECTION
1
CD L-CH
HP301
R-CH R-CH
PLAYBACK
HEAD
L-CH
(DECK A)
PB
HRP301
L-CH
RECORD/
PLAYBACK
HEAD
R-CH R-CH
(DECK B)
ISS3 ISS1
Q319 Q318
MD
POWER
DETECTOR Q317 Q316
Q340
9V
S304
S301
(MD POWER)
ISS
DECK A
3 2 1
S307
(MD POWER)
DECK B
78
9V REC
S301-3
REC
79 C-DOR
T E PB
L 1 3 9 4 2 2 9 6 5 1 3
S801 21 17 18 19 20
CD DOOR
OPEN/CLOSE
LED
SWITCH
Q807
D810
MANUAL
6V
5 BAND
D806-809
GRAPHIC
EQUALIZER
ZW770
6V
L4
AM-OSC
ZW750
TUNER
D3
6V
L3
AM
FERRITE-ROD
ANT1
ANTENNA
FM
22
TELESCOPIC
ANTENNA
CT2
TUNER
6V
BPF 2
FL1
w w w
L1
FM-RF
04
TUNER
.
S303
20 HIGH-SPEED
CD-L DUBBING
REC/PB
12
PRE AMP
IC301
A-L
1
S301-1 Q305
REC
REC EQ
B-L
32
BIAS
19 OUT-R 15 R-CH
T301
BIAS OUT-L
BIAS
14
OSC
TR-C
FUNCTION
29
BIAS
LOGIC 27
OSC
30
BIAS
TR-B
10 7 28
M301
(CAPSTAN/REEL)
Q306
A
S305
+ –
S301-4
M (MD PLAY)
DECK A
HIGH
9V
B
Q307
RV301
NORMAL
TAPE
SPEED Q304
S306
(MD PLAY)
DECK B
23
SYSTEM CONTROL
IC801 (2/2)
TUNER TUNER
38–41 42–64 67 68 31 32 29 30
X801
3
4.19MHz
RESET
LCD801
IC802
CLOCK CLOCK
1
SHIFT SHIFT
Q802
Q801
B/UP +5V
2 4
PLL
IC2
19 LP-OUT
12 13 14 9 21 20 11
X1
75KHz
20 19 14 18 17
FM/AM FRONT-END,
IF DET, FM STEREO
AM DEMODULATOR
IC1 IF
OSC
BUFFER
CFT1
MIX
AM
AM IFT
OUT
RF-IN
AM
4 6
MIX
AM
FM
IF-IN
MIX
FM
FM
RF-IN
7
OSC
FM
IF-IN
TUNER
24 21
6V
CT1
CF1
D1 D2
TUNER
L2
x a o
FM-OSC 6V
y
D10
TUNER
TUNER
i
6V 6V
6V
– 19 –
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8
1KHz BAND
DETECTOR
IC803
Q315
5 BAND PROCESSOR
A06/10KHz
12
A05/4KHz
11
4
DATA
A04/1KHz
10
3 CLK
A03/400Hz 9
2 LAT
A02/100Hz 6
DUBBING
A01/VR
5
SWITCH
Q308-310
MEGA BASS
TAPE DETECTOR
Q321, 322
Q303
17
Q301
TUNER
CD
Q302
ZW770
X802
LED
32.768KHz
SWITCH
Q808-810
22 73•74 69 71 70 16 14 3 15
BL-CONT
A-MUTE
Q Q
3 7 6 3
66 24 25 26 27 2 13 80
1
SIRCS
RECEIVER
IC811
S824-827 S816-823 S808-815 S803-807
3
REM +B
DI 3
BAND 7 CD SECTION
2
R-CNT/ST-MO
DO 5
8
Q1
13
AM
DET
MPX- R-OUT
DET-
11
IN
AF OUT FM
16 15 MUTE
L-OUT
BUFFER MPX
12
FM
DET
10
CF2
u 1 6 3
TUNER
6V
.
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2 4
9 9 8
5 BAND GRAPHIC EQUALIZER
RV401-405
2 1 22 21 20 POWER AMP
IC304
OUT2
GRAPHIC
13 12
EQUALIZER
IN2
Q101
VOL
CONTROLLER 4
VOLUME/SOUND CONTROL
IC302
Q323(ZW770)
Q332(ZW750)
6V
Q811–813
LAMP ON
SWITCH
Q334, 335 ZW770
PL801–803
ZW770
76
77
CD 5V
RECT
CD 5V SWITCH
D901-904
Q313, 314
ZW770
CD
1 5 1 5 0 8 9 2 4
7.5V REG
RECT
(FOR B/L)
D905, 909-911
Q332
TUNER 6V
TUNER
SWITCH
6V
Q311, 312
9V
TUNER
5V REG ZW750
TUNER 5V (FOR CD/TUNER)
Q330
6V REG
6V (FOR AUDIO)
Q331
ZW770
POWER
SWITCH
Q338, 339
9V
D321
VT 9V
D814
BACK UP OPR/BATT
SWITCH
Q320, 324, 325,
327-329
6.2V REG
CD 6.2V (FOR CD)
IC305
Q333
BACK UP 5V IC
R-CH
D908
B/UP
3 2
+5V
D907
D906
DRY BATTERY
REG. CHECK &
SIZE "AA"
REM+B
REM+B SWITCH
(IEC DESIGNATION R6)
Q336, 337
3PCS, 4.5V
m
(BACK UP)
DRY BATTERY SIZE "D"
c o
(IEC DESIGNATION R20)
6PCS, 9V (POWER)
– 20 –
CFD-ZW750/ZW770
2
9 9
R-CH
R-CH
J301
3
PHONES
SP901
SPEAKER
(L-CH)
T901
POWER
F901
TRANSFORMER
R901
9 8 2 9 9
J901
~ AC IN
ZW770
6V 9V
5V REG 6V REG
TUNER
(FOR CD/TUNER) (FOR AUDIO)
5V
Q330 Q331
R367
9V
• Signal path
: FM
: AM
: PLAY (DECK A)
: PLAY (DECK B)
: REC (DECK B)
: CD
• R-ch : same as L-ch.