Sony CFS-KW300S Service Manual ▷ View online
CFS-KW300S
IC504
J-13
IC505
J-12
IC601
J-3
IC602
J-5
Q1
B-4
Q2
F-1
Q3
B-4
Q4
B-4
Q101
G-11
Q103
F-11
Q104
C-8
Q105
B-20
Q106
G-20
Q201
G-9
Q203
C-12
Q204
B-8
Q205
B-19
Q206
G-20
Q302
F-13
Q303
B-6
Q306
F-7
Q307
E-7
Q308
E-6
Q310
D-6
Q311
D-13
Q312
D-12
Q314
F-13
Q315
G-5
Q316
G-6
Q317
G-6
Q318
G-5
Q320
D-13
Q321
D-6
Q322
B-18
Q327
C-20
Q329
B-18
Q330
D-13
Q331
C-1
Q332
E-8
Q333
G-12
Q334
D-8
Q501
J-15
Q502
J-14
Q503
I-12
Q504
J-15
Q505
J-14
Q506
J-13
Q507
J-9
Q508
J-10
Q601
I-2
Q602
J-2
Q603
K-4
Q604
J-4
D1
F-4
D2
F-4
D5
B-4
D101
B-18
D102
A-18
D201
B-18
D202
A-18
D303
B-6
D304
B-6
D305
E-8
D306
E-7
D307
E-7
D308
F-8
D310
D-5
D311
F-13
D314
G-6
D315
E-6
D316
C-6
D317
C-13
D324
D-13
D325
B-14
D326
F-11
D327
C-6
D501
I-11
D502
I-11
D503
I-11
D504
I-11
D505
J-11
D506
J-11
D507
J-11
D508
J-11
D509
J-11
D510
J-11
D511
J-9
D512
J-10
D513
K-11
D515
J-13
D516
J-12
D601
J-6
D602
J-1
D901
B-16
D902
C-16
D903
C-17
D904
C-17
D905
C-17
IC1
E-2
IC301
F-10
IC302
C-10
IC303
E-6
IC304
C-12
IC306
E-20
IC501
I-13
IC502
J-13
IC503
J-13
– 5 –
– 6 –
– 7 –
– 8 –
1. Circuit Change
• PRINTED WIRING BOARD
Ref. No.
Location
Ref. No.
Location
• Semiconductor Location
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
CFS-KW300S
– 9 –
– 10 –
– 11 –
– 12 –
– 13 –
• SCHEMATIC DIAGRAM
• See page 15 for Waveforms.
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
U
: B+ Line.
•
H
: adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 12 V and fed with regulated dc power
• Power voltage is dc 12 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : SW1/2
<
> : MW
[
] : TAPE PLAYBACK (DECK A)
{
} : TAPE PLAYBACK (DECK B)
〈〈
〉〉
: TAPE RECORD (DECK B)
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: MW
E
: TAPE PLAYBACK (DECK A)
d
: TAPE PLAYBACK (DECK B)
G
: TAPE RECORD (DECK B)
N
: MIC INPUT
• Abbreviation
EA
: Saudi Arabia model
UAE
: United Arab Emirates model
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• IC Block Diagram
– ECHO Board –
– ECHO Board –
IC602
BU9255FS-E2
2
1
4
BIAS
3
ECHO VR
GND
5
9
8
7
6
DALPF IN
DALPF OUT
MIX OUT
DAINT IN
DAINT OUT
VCC
MUTE
CR
ADLPF OUT
ADLPF IN
MIX IN
ADINT IN
ADINT OUT
10
11
12
15 14
13
16
A/D
D/A
STATIC
RAM
COUNTER
OSC
MIX
+
–
+
–
–