Printed Wiring Board - Tape Deck Section; Schematic Diagram - Tape Deck Section - Sony CFD-E75 Service Manual

CFD-E75
6-9. PRINTED WIRING BOARD – TAPE DECK Section –
• See page 23 for Circuit Boards Location.
1 2 3
TC BOARD
A
R111
B
R105
R309
R304
C
B
R211
R303
MAIN BOARD
CNP322
(Page 29)
R302
R205
D
• Semiconductor
Location
Note on Printed Wiring Board:
Ref. No. Location
• X : parts extracted from the component side.
IC301 C-3
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
Q301 D-4
(The other layers' patterns are not indicated.)
4 5
4
1 3 2
R110
R301
R104 R103
C101
R106
S301
(REC/PB)
PB
-1 -2
r
R201
REC
R202
R206
R305
R308
1-679-592-
6-10. SCHEMATIC DIAGRAM – TAPE DECK Section –
• See page 23 for Waveform.
6
L-CH
HRP301
REC/PB
HEAD
R-CH
HE301
(ERASE HEAD)
L-CH
HRP301
(REC/PB HEAD)
R-CH
HE301
(ERASE HEAD)
S301
(REC/PB)
REC
PB
-1
11
(11)
28 28
• See page 37 for IC Block Diagram.
C301
REC/PB EQ AMP,
100
SELECT SWITCH
10V C102 R102 R103
47 10V 68 68k
R301
1M
C104
0.0022 AGC
L.LIN
R104
2.2k
C101 L.PO MIC
0.001
I/EX
C103
C107 0.047
L.NF
470p L.RAD
L.RO
REC
R110
R101 C105
100
1 15k 47p
L.IN
L.LO
REF
VCC
C302
100 10V
4
GND
R.LO
R210 C205
100 47p
R.IN
LINE
R201
15k
R.RO
R.RAD
C207
R.NF
470p TAPE
C203 R204
0.047 2.2k
C201
R.PO
0.001 R.LIN
MIC.NF
C204
MIC
0.0022
IC301
TA2068N
R106
2.2k
R206
C202 R202 R203
2.2k
47 68 68k
10V
-2
R305
T301 150
BIAS OSC
C305
R306
470p
6.8k
R308 C306
22k 0.01
Q301
2SC2412KT
-146-QR
BIAS OSC
C307
R307
0.0022
15
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
specified.
• A : B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : TAPE PLAY
(
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
E
a
J
R111
4.7k
C106
1
50V
C303
100 10V
C206
1
50V
R309
47
R211
4.7k
R302 R303 R304
4.7k 4.7k 1k
CN303
13P
TU-IN-L
TU-IN-R
R105
15k
CD-IN-L
CD-IN-R
L-OUT
JC301
R205
15k R-OUT
LINE
TAPE
6V
GND
(Page
JC303 JC304 REC
30)
1 / W or less unless otherwise
4
) : TAPE RECORD
: TUNER (FM/AM)
: TAPE PLAY
: TAPE RECORD
: CD PLAY