Sony CFS-515L Service Manual ▷ View online
– 17 –
– 19 –
– 18 –
r
Waveforms
2
T301
VOLT/DIV : 10 V AC
TIME/DIV : 5
TIME/DIV : 5
µ
sec
1
T301
VOLT/DIV : 1 V AC
TIME/DIV : 5
TIME/DIV : 5
µ
sec
4.9Vp-p
12.6
µ
sec
45.5Vp-p
12.6
µ
sec
r
Refer to page 14 for Note.
5-3. SCHEMATIC DIAGRAM – MAIN SECTION –
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Refer to page 23 for IC Block Diagrams.
CFS-515L
– 20 –
– 22 –
– 21 –
CFS-515L
Ref. No.
Location
r
Semiconductor
Location
D1
E-2
D2
E-3
D3
D-3
IC1
D-4
Q1
C-3
Q2
E-5
5-4. PRINTED WIRING BOARDS – TUNER SECTION –
Note:
• X
: parts extracted from the component side.
• b
: Pattern from the side which enables seeing.
5-5. SCHEMATIC DIAGRAM – TUNER SECTION –
r
Refer to page 24 for IC Block Diagram.
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
¢
: internal component.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Power voltage is dc 9V and fed with regulated dc power
supply from battery terminal.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
(
no mark : FM
(
) : MW/LW/SW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Signal path.
F
: FM
– 23 –
IC301 BA3426AS
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IC Block Diagrams (Main Section)
IC101, 201 BA5417
1
N.C
2
B.S.2
3
OUT1
4
B.S.1
OUT2
VCC
5
POWER GND
6
SW
7
RIPPLE
8
NF1
9
IN1
10
IN2
11
NF2
12
PRE GND
PRE GND
13
14
15
BS
BS
ST. BY
FILTER
T. S. D
1
A-L
2
TAPE-NF-L
3
TAPE-O-L
7
4
A-R
5
TAPE-NF-R
6
8
9
10
11
TAPE-O-R
MIC/HS
MIC-NF
MIC -IN
RADIO-IN -L
RADIO-IN -R
CD-IN-L
CD-IN-R
LINE-OUT
-L
LINE-OUT
-R
BIAS-IN
12
13
16
14
15
32
31
30
26
29
28
27
25
24
23
22
B-L
B-R
TR-B
TR-C
TAPE-MODE
FNC
REC-EQ-L
REC-EQ-R
REC-NF-L
REC-NF-R
LPF-L
LPR-R
AGC
BIAS
GND
VCC
VCC
21
20
17
19
18
REC EQ
HS : 1.4V OUT
(Low lmp.)
Nor : 0.35V OUT
(Hogh lmp.)
LOGIC
REC EQ
AGC
ECM : Open
Mic : Low
– 24 –
IC302 CXA1352AS
IC1 CXA1238S
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IC Block Diagram (T
uner Section)
CONTROL
GRAPHIC EQUALIZER
GRAPHIC EQUALIZER
BIAS
15dB
15dB
29dB
29dB
400Hz
1kHz
4kHz
10kHz
DVCC
DC 2
IN 2
VCC
LINE
OUT 2
OUT 2
(FIX)
VG
100Hz
BAL
VOL
DC 1
IN 1
GND
LINE
OUT 1
OUT 1
(FIX)
OUT 1
(VARIABLE)
OUT 2
(VARIABLE)
ISET
21
22
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
18
19
20
VOLUME
VOLUME
REG
FM FRONT-END
AM FRONT-END
VCO
REG
MPX REG.
PD 1
PD 2
MONO/ST
SELECT
SELECT
1/2
COUNTER
1/2
COUNTER
MUTING
DECORD AMP
AUTOBLEND
RIPPLE
FILTER
BAND PASS
MUTE
TUNING
INDICATOR
AM
IF / DET
GND
PLL LPF 1
PILOT DET
LPF 1
PILOT DET
LPF 2
ST IND/
VCO CHECK
RCH OUT
LCH OUT
VCC
RIPPLE
FILTER
AFC/AGC 1
AFC/AGC 2
GND
TUND IND
FM IF IN
AM IF IN
BAND SELECT
PLL LPF2
MPX REG
VCO
FM
DISCRI
MUTE
AM OSC
AFC
FM OSC
REG OUT
FM RF
AM RF IN
FM RF IN
FM/AM
FE OUT
GND
2
3
5
4
6
7
8
9
10
1
11
12
13
14 15
16
17
18
19
20
30
29
28
27
26
25 24 23 22
21
FM IF /
DISCRI
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