DOWNLOAD Sony CFD-E77L Service Manual ↓ Size: 3.36 MB | Pages: 56 in PDF or view online for FREE

Model
CFD-E77L
Pages
56
Size
3.36 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfd-e77l.pdf
Date

Sony CFD-E77L Service Manual ▷ View online

CFD-E77L
22
22
6-4.
BLOCK  DIAGRAM  – POWER  SUPPLY Section –
2
42 
 61
SEG0 
 SEG19
38 
 41
COM0 
 COM3
RMC
18
CD
65
RADIO
19
P-CON
30
RST
21
REG CHK
80
TC PLAY
LIQUID CRYSTAL
DISPLAY
LCD801
AAAA
BBBB
CCCC
DDDD
REMOTE
CONTROL
RECEIVER
IC804
SYSTEM
CONTROLLER
IC801
(3/3)
CD B+
SWITCH
Q325, 326
CD +3.3V
REGULATOR
Q325, 326
TUNER B+
SWITCH
Q322, 323
RADIO 6V
CD 3.3V
TC 6V,
ELECTRICAL VOLUME (IC320) B+
RMC 5V
COM +3.3V
REGULATOR
IC321
RESET SIGNAL
GENERATOR
IC803
BATTERY
CHECK
Q328, 329
TC POWER B+
D324
D323
D322
M
S303
(MOTOR ON/OFF)
M301
(CAPSTAN/REEL)
S304
(TAPE PLAY)
TC POWER
B+
+6.2V
REGULATOR
Q390
B+ SWITCH
Q392, 393
CD 6.2V
POWER AMP
(IC390) B+
CD +6.2V
REGULATOR
Q391
RECT
D901 – 904
D905
D906
T901
POWER
TRANSFORMER
J901
 AC IN
µ
COM B+
DRY BATTERY
SIZE"D"
(IEC DESIGNATION R20)
6PCS. 9V
(FOR POWER SUPPLY)
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION R6)
3PCS. 4.5V
(FOR BACK UP)
CD B+
D401
OPR/BATT
CFD-E77L
23
23
• Circuit Boards Location
KEY POWER board
JOG board
OPR/BATT LED board
TC board
KEY VOLUME board
TUNER board
MAIN board
CD board
BATY A board
BATY B board
BACK-UP board
LCD board
POWER board
AC INLET board
6-5.
NOTE  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC  DIAGRAMS
(In addition to this, the necessary note is printed in each block)
Note on Printed Wiring Board:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
W
: indicates side identified with part number.
f
: internal component.
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Note on Schematic Diagram:
• All capacitors are in 
µ
F unless otherwise noted.  pF: 
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in 
 and 
1
/
4
 
W or less unless otherwise
specified.
f
: internal component.
5
: fusible resistor.
C
: panel designation.
A
: B+ Line.
H
: adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages are taken with a VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: MW/LW
E
: TAPE PLAY
a
: REC
J
: CD PLAY
Note: The components identified by mark 
0
 or dotted line
with mark 
0
 are critical for safety.
Replace only with part number specified.
CFD-E77L
24
24
M702
(SLED)
S701
(LIMIT)
C732
CNP701
X701
CNP702
C702
JW701 JW702
JW703
JW705
JW706
JW707
JW708
JW709
JW713
JW714
JW716
JW717
JW718
JW721
JW722
JW723
JW724
JW725
JW726
JW727
JW728
JW729
JW730
C740
C750
C746
C747
JW719
C735
 
JW720
JW711
C733
C706
JW712
JW710
 
JW715
Q701
IC702
C729
C730
R730
R728
R729
C704
R708
C728
R724
R722
R725
R726
R707
C701
C726
C723
C725
C724
R719
R717
R718
R716
C720
C721
C722
R731
R721
R720
C716
R715
R714
C727
C711
C709
FB701
C736
C734
R709
C705
R704
R702
R711
R710
R703
R705
R701
C703
C731
R706
C738
C739
R727
R712
R723
C708
R741
JC701
R743
 
C751
JC702
JC703
C743
C744
C745
C742
 
 
C754
C755
 
C741
JC704
C707
 
 
 
L706
C717
R744
IC701
CD BOARD
D
MAIN BOARD
CNP323
M
M
M701
(SPINDLE)
1-680-943-
13
(13)
C
D
E
F
G
H
1
2
3
4
5
6
7
8
A
B
TP
(GND)
TP
(RF)
OPTICAL
PICK-UP
BLOCK
(KSS-213C)
6-6.
PRINTED  WIRING  BOARD  – CD Section –
 See page 23 for Circuit Boards Location.
• Semiconductor
Location
Ref. No.
Location
IC701
C-4
IC702
H-3
Q701
F-5
(Page 29)
CFD-E77L
25
25
C727
C726
C725
C724
C723
C722
C720
C721
C746
C745
R726
C728
R725
R724
C744
C747
C730
R729
R730
R701
R702
R703
R704
R705
R706
R712
R710
R709
C731
C703
C736
C743
C742
C707
C704
C717
R714
C716
C711
C735
R718
R716
R717
C755
C754
R743
C741
C709
C750
R731
C702
R707
CNP701
C740
R744
R711
C734
C708
S701
M701
M702
C701
Q701
TP
C705
IC702
R741
CNP702
R715
FB701
C733
C732
C751
JC703
IC701
L706
JC701
JC702
X701
JC704
C729
R728
R727
R723
R722
R719
R720
R721
C706
C738
C739
1000p
1000p
1000p
22p
0.01
22p
22p
22p
100
10V
0.1
680
0.047
680
47k
0.1
100
10V
0.1
220
1k
47k
15k
15k
15k
15k
47k
100
4.7k
22k
0.047
0.1
4700p
(TE)
0.1
0.1
1
(VC)
(FE)
22p
0.01
150
0.01
0.01
1000
6.3V
1k
1k
1k
(R-CH)
(L-CH)
0.01
0.01
6.8k
0.1
0.1
100
10V
2.2k
47
10V
10
16P
470
10V
100k
330
4700p
100p
1000p
KTN2907AS-RTK
(GND)
BA6998FP-E2
6.8k
14P
150
100
10V
100
10V
0.1
LC78645NE-U
33.8688MHz
220
1
10k
2.2k
100
100
100
100
1k
1
50V
0.1
0.1
A9
A10
A9
A10
A1
A1
A2
A2
A8
A8
A4
A4
A3
A3
A5
A5
A6
A6
A7
A7
B1
B3
B5
B1
B3
B5
C1
C2
C3
C4
C1
C2
C3
C4
B2
B4
B2
B4
E
D
A
B
C
F
LD
VR
PD
F+
T+
T-
F-
SW
GND
V
C
C
M
U
T
E
S
P
+
S
P
IN
S
P
-
S
L-
S
L
+
R
E
G
O
V
C
C
V
R
E
F
F
-
F
+
T-
T
+
R
S
T
DRF
RES
DO
DI
CL
CE
VREF
VCC
GND
FSEQ
WRQ
R
E
G
-B
G
N
D
G
N
D
G
N
D
N
C
O
P
O
U
T
O
P
IN
SLCIST
EFMIN
RF
RFVDD
RFVSS
FIN1
FIN2
TIN1
TIN2
VREF
REFI
FE
TEC
TE
RFMON
JITTC
ADAVDD
ADAVSS
TDO
FD
O
S
P
D
O
S
LD
O
G
P
D
A
C
C
O
N
T
4
C
O
N
T
5
S
B
C
K
/C
O
N
T
6
S
B
C
K
/FG
D
EFE
C
T
V
/
P
FS
E
Q
M
O
N
I1
M
IN
I2
M
O
N
I3
M
O
N
I4
M
O
N
I5
(3
.3
V
)V
S
S
V
D
D
D
O
U
T
T
ES
T
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
XVDD
XOUT
XIN
FSX/16MIN
XVSS
C2F
EFLG
16MOUT
ASLRCK
ASDACK
ASDFIN
LRSY
DATACK
DATA
C
E
C
L
D
I
D
O
W
R
Q
R
E
S
D
R
F
V
D
D
5
V
S
S
C
O
N
T
3
C
O
N
T
2
C
O
N
T
1
P
D
O
1
P
D
O
2
V
V
S
S
P
C
K
IS
T
V
V
D
D
F
R
L
D
S
L
D
D
SLCO
TX
TY
FX
F
Y
S
P
Y
S
P
X
S
L
X
S
L
Y
S
L
IN
(S
L
IN
)
FIN
(F
IN
)
T
IN
(T
IN
)
(LIMIT)
SL+
SL-
SP-
SP+
(SLED)
(SPINDLE)
AUTOMATIC
POWER CONTROL
RF AMP,FOCUS/TRACKING SERVO,
DIGITAL SIGNAL PROCESSOR,
CLV SERVO,D/A CONVERTER
COIL DRIVE,
FOCUS/TRACKING
SPINDLE/SLED
MOTOR DRIVE
P-GND
CD MOTOR 6.0V
CD R-OUT
CD L-OUT
D-GND
CD VDD 3.3V
4700p
R708
10k
TP
(RF)
6-7.
SCHEMATIC  DIAGRAM  – CD Section –
 See page 36 for Waveforms.
 See page 36 for IC Block Diagrams.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : CD STOP
(
) : CD PLAY
Note: The components identified by mark 
0
 or dotted line
with mark 
0
 are critical for safety.
Replace only with part number specified.
(Page 30)
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