Sony CFD-CD777SMK2 Service Manual ▷ View online
CFD-CD777SMK2
33
33
6-15. SCHEMATIC DIAGRAM – AMP, POWER SUPPLY Section –
•
See page 34 for IC Block Diagram.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
no mark : FM
〈〈
〉〉
: TAPE REC (DECK B)
<
> : TAPE PLAY (DECK A)
[
] : CD PLAY
The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
C225
C125
CNW313
R380
Q310
R209
R226
R126
R210
C215
C216
C119
R111
C219
R211
CNW315
Q309
C328
C312
C313
D324
D323
R359
R363
R360
R358
D325
C315
C318
Q311
C343
C342
C352
D326
D321
D337
R388
R410
C349
Q319
C392
C389
C390
D338
R389
C391
R337
C309
C310
IC103
C218
C217
C118
C117
C115
R110
C221
C220
C121
C120
R112
R113
C223
C222
C123
C122
C116
C224
CNP306
CNW306
CNW317
CNP317
SP902
SP903
SP901
SP904
C124
R114
CNW305
CNP305
C905
C902
C904
C907
C903
C901
C906
T901
F901
J901
CNP904
CNW901
D905
CNP903
J301
J304
PS901
S901
D901
D903
D902
D904
J902
R109
R214
C314
F903
CNP902
R212
R213
3.3
3.3
12P
1 1/2W
KTD2058GR
1k
470
470
100
1 50V
560p
0.1
1k
0.1
1k
3P
KTD2058GR
47
16V
470
16V
16V
0.01
RD8.2ESB1
IN4148M-TP
1k
1
1/2W
270
220
RD10ESB1
0.022
1000
25V
KTD2058GR
0.01
470
16V
16V
47
16V
RD8.2ESB1
IN4148M-TP
IN4148M-TP
680
680
0.01
KTD2058GR
47
16V
470
16V
16V
0.01
RD5.6ESB2
1k
0.01
10k
33
16V
22
50V
LA4620
100
10V
10V
100p
100
10V
10V
100p
1
50V
100
100
10V
10V
100
10V
10V
100
10V
10V
100
10V
10V
3.3
3.3
0.033
0.033
0.033
0.033
560p
47 16V
5P
5P
4P
4P
47 16V
180
5P
5P
6800
25V
0.47
0.47
0.47
0.47
0.47
0.47
T800mA
250V
4P
4P
IN5401
4P
4P
1N5401
1N5401
1N5401
1N5401
1k
180
0.01
T6.3AL
250V
4P
3.3
3.3
R CH OUT
L CH OUT
SPK L-
SPK L+
SPK R-
SPK R+
12V
VCC
GND
12V
VCC
VCC
GND
GND
VCC
GND
+10V REGULATOR
VCC
VCC
DGND
MOTOR GND
+5V
AU +7.5V
PGND
CD +7.5V
+3.3V
+12V
AGND
+7.5V REGULATOR
+7.5V REGULATOR
+5V REGULATOR
POWER AMP
SPEAKER
(R)
(L)
(TWEETER)
(TWEETER)
(WOOFER)
(WOOFER)
D901-904
RECT
POWER
TRANSFORMER
VOLTAGE
SELECTOR
110-120V
220-240V
AC IN
DRY BATTERY
SIZE"DD"
(IEC DESIGNATION R20)
8PCS. 12V
PHONES
DC IN 12V
MOTOR +9V
IMPEDANCE 4Ω
(Page 29)
(Page 29)
CFD-CD777SMK2
34
34
• Waveforms
– MAIN Board –
– MAIN Board –
2
IC701
ea
(RFO) (CD PLAY MODE)
500 mV/DIV, 500 ns/DIV
3
IC701
rf
(TI) (CD PLAY MODE)
50 mV/DIV, 1
µ
s/DIV
4
IC702
3
(MDP) (CD PLAY MODE)
1 V/DIV, 2
µ
s/DIV
6
IC702
ws
(BCK) (CD PLAY MODE)
2 V/DIV, 200 ns
7
IC702
wg
(XPCK) (CD PLAY MODE)
2 V/DIV, 100 ns/DIV
8
IC702
wk
(RFCK) (CD PLAY MODE)
2 V/DIV, 50
µ
s/DIV
9
IC702
eg
(XTAO) (CD PLAY MODE)
2 V/DIV, 20 ns/DIV
1
IC701
2
(FI) (CD PLAY MODE)
50 mV/DIV, 1
µ
s/DIV
5
IC702
w;
(LRCK) (CD PLAY MODE)
2 V/DIV, 10
µ
s/DIV
1
IC801
ya
(EXT)
2 V/DIV, 100 ns/DIV
– CONTROL Board –
Approx.
150 mVp-p
150 mVp-p
1.2
±
0.2 Vp-p
Approx.
100 mVp-p
100 mVp-p
2.6 Vp-p
7.5
µ
s
5 Vp-p
22.8
µ
s
6.2 Vp-p
472 ns
5.3 Vp-p
232 ns
5.4 Vp-p
136
µ
s
4.6 Vp-p
59 ns
4.6 Vp-p
239 ns
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC1
CXA1238S
VCO
REGULATOR
FM FRONT-END
AM FRONT-END
MPX
REGULATOR
MONO/STEREO
SELECT
DECORD
AMP
MUTING
AUTO
BLEND
TUNING
INDICATOR
AM IF/
DET
FM IF/
DISCRI
RIPPLE
FILTER
BAND-PASS
MUTE
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
PLL LPF1
PILOT DET LPF2
PILOT DET LPF2
ST IND/VCO CHECK
L-CH OUT
VCC
R-CH OUT
RIPPLE FILTER
AGC AFC1
10
AGC AFC2
13
FM IF IN
14
AM IF IN
15
BAND SELECT
11
GND
12
TUNE IND
1/2
COUNTER
1/2
COUNTER
PD1
PD2
FM/AM FE OUT
FM GND
FM RF IN
AM RF IN
FM RF
REG
FM OSC
AFC
AM OSC
MUTE
FM DISCRI
GND
PLL LPF2
MPX REG
VCO
35
CFD-CD777SMK2
IC101
BA3426AS
IC102
CXA1352AS
+
–
+
–
–
+
–
–
+
–
+
–
1
27
28
29
30
24
25
26
21
22
23
18
19
20
16
17
2
3
4
5
6
7
8
9
A-L
TAPE-NF-L
TAPE-O-L
A-R
TAPE-O-R
MIC/HS
TAPE-NF-R
MIC-NF
MIC-IN
10
RADIO-IN-L
13
CD-IN-R
14
LINE-OUT-L
15
LINE-OUT-R
BIAS-IN
11
RADIO-IN-R
12
CD-IN-L
GND
VCC
BIAS
AGC
LPF-R
LPF-L
REC-NF-R
REC-NF-L
REC-EQ-R
REC-EQ-L
TR-B
32
B-L
31
B-R
TR-C
TAPE-MODE
FUNCTION
AGC
REC EQ
AMP
REC EQ
AMP
LOGIC
CONTROL
15dB
15dB
29dB
VOLUME
VOLUME
29dB
GRAPHIC
EQUALIZER
GRAPHIC
EQUALIZER
BIAS
1
21
22
18
19
20
16
17
2 3 4
5
6
7
8
9
400Hz
100Hz
BAL
VOL
IN 1
GND
DC1
OUT 1 (FIX)
LINE OUT 1
10
OUT 1 (VARIABLE)
11
ISET
VCC
15
LINE OUT 2
14
OUT 2 (FIX)
13
OUT 2 (VARIABLE)
12
VG
IN 2
DC2
DVCC
10kHz
4kHz
1kHz
36
CFD-CD777SMK2
IC701
CXA1782CQ
36
35
34
33
32
31
30
29
28
27 26 25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
37
38
39
40
41
42
43
44
45
46
47
48
PHD 2
PHD 1
PHD
LD
RF O
RF I
CP
CB
CC1
CC2
FOK
SENS
C.OUT
XRST
DATA
XLT
CLK
VCC
ISET
SL O
SL M
SL P
TA O
TA M
FSET
TG2
TGU
SRCH
FE O
FLB
FGD
FDFCT
FE M
FEI
FEO
FE BIAS
F
E
EI
VEE
TED
LPFI
TEI
ATSC
TZC
TDFCT
VC
APC
LEVEL S
FOK
MIRR
RF IV AMP1
RF IV AMP2
FE AMP
TTL
IIL
FZC COMP
DFCT
IIL
TTL
IIL DATA REGISTER
INPUT SHIFT REGISTER
ADDRESS DECODER
OUTPUT DECODER
TTL
IIL
TOG1-3
BAL1-3
FS1-4
TG1-2
TM1-7
PS1-4
F IV AMP
E IV AMP
BAL1
BAL2
BAL 3
TE AMP
TZC COMP
DFCT
TM1
DFCT
FS4
ATSC
WINDOW COMP
TOG1
TOG2
TOG3
FCS PHASE
COMPENSATION
FS1
F SET
TG2
TM7
TM3
TM4
TM5
TM6
ISET
TRACKING
PHASE
PHASE
COMPENSATION
HPF COMP
LPF COMP
TG1
FS2
TM2
RF M
Click on the first or last page to see other CFD-CD777SMK2 service manuals if exist.