Sony CFS-929S Service Manual ▷ View online
11
CFS-929S
FM VCO Adjustment
Setting:
BAND switch: FM
BAND switch: FM
Adjustment Location: – tuner board (component side) –
Procedure:
1. Connect the frequency counter to pins 4 and 7 of IC1 as shown
1. Connect the frequency counter to pins 4 and 7 of IC1 as shown
the figure.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz reading on the frequency counter.
3. Adjust RV1 for 76 kHz reading on the frequency counter.
Specification Value: 75.95 to 76.05 kHz.
telescopic
antenna terminal
antenna terminal
0.01
µF
FM RF signal
generator
generator
98MHz frequency deviation
by 1kHz signal
Output level: 0.1V (100dB)
by 1kHz signal
Output level: 0.1V (100dB)
set
33k
Ω
TUNER board
IC1 pin
4
IC1 pin
7
digital frequency
counter
counter
1
µ
F
IC1
30
16
15
1
CNP1
CT1, L1
FM
TRACKING
ADJUSTMENT
L7
SW2
TRACKING
ADJUSTMENT
CT2, L2
FM FREQUENCY
COVERAGE
ADJUSTMENT
CT4, L4
MW FREQUENCY
COVERAGE
ADJUSTMENT
MW FREQUENCY
COVERAGE
ADJUSTMENT
CT6, L6
SW1 FREQUENCY
COVERAGE
ADJUSTMENT
SW1 FREQUENCY
COVERAGE
ADJUSTMENT
CT8, L8
SW2 FREQUENCY
COVERAGE
ADJUSTMENT
SW2 FREQUENCY
COVERAGE
ADJUSTMENT
L9
FM IF
ADJUSTMENT
T1
MW IF
ADJUSTMENT
RV1
FM VCO
ADJUSTMENT
CT3, L3
MW
TRACKING
ADJUSTMENT
MW
TRACKING
ADJUSTMENT
L5
SW1
TRACKING
ADJUSTMENT
SW1
TRACKING
ADJUSTMENT
ANT1
FM/SW
TELESCOPIC
ANTENNA
– TUNER board (component side) –
L3
L9
RV1
EA model
E15, UAE model
L2
L8
CT8
L5
L6
CT6
L4
L7
L1
T1
CT2
CT4
CT1
CT3
L2
• Abbreviation
E15 : AC 220-240V area in E model
EA
EA
: Saudi Arabia model
UAE : United Arab Emirates model
12
CFS-929S
SECTION 6
DIAGRAMS
POWER board
RETAINER board
(not supplied)
(not supplied)
RETAINER2 board
PIN JACK board
BATT (+) board
BATT (–) board
TUNER board
VOL board
MAIN board
F/T board
H/P board
LED2 board
LED1 board
RETAINER board
(not supplied)
(not supplied)
RETAINER board
(not supplied)
(not supplied)
REC SW board
JOG board
MAXI BASS board
6-1. CIRCUIT BOARDS LOCATION
CFS-929S
13
13
7
30
19
L5
SW1
TRACKING
CT1,L1
FM
TRACKING
CT2,L2
FM
FREQUENCY
COVERAFE
L5 SW1 ANT
L7 SW2 ANT
L7
SW2
TRACKING
CT3,L3
MW
TRACKING
CT6,L6
SW1
FREQUENCY
COVERAGE
CT8,L8
SW2
FREQUENCY
COVERAGE
CT4,L4
MW
FREQUENCY
COVERAGE
DECK A
(L-CH)
(R-CH)
HP301
PLAYBACK
HEAD
DECK B
(L-CH)
(R-CH)
HRP301
RECORD/
PLAYBACK
HEAD
J103
PLAY(DECK B)
J102
PLAY(DECK A)
J105
POWER(DECK B)
J104
POWER(DECK A)
M301
CAPSTAN/
REEL
MOTOR
ANT1
FM/SW
TELESCOPIC
ANTENNA
L8
SW2
OSC
L6
SW1
OSC
L4
MW
OSC
22
19
24
21
20
18
16
13
FM
FRONT END
FM
FRONT END
AFC/AGC
AMP
FM IF/
DISCRI
MIC
AMP
BIAS
OSC
LOGIC
CONTROL
MPX
DECODE
AMP
14
REGULATOR
T1
AM IF
DETUNE
MUTING
MUTING
CONTROL
FINE TUNING
CONTROL
Q1
TUNER
B+ SWITCH
Q302
POWER SWITCH
Q371
AM IF/
DETECT
10
23
15
7
6
5
28
27
RV1
FM VCO
26
S302
FUNCTION
S302-2
TU+B
VDD
TAPE
RADIO OFF
r
DUBBING
r
RADIO
r
CD/TV LINE IN
FM
r
SW1
r
SW2
r
MW
OFF
r
ON
S1
BAND
FM
r
SW1
r
SW2
r
MW
S901
VOLTAGE
SELECTOR
220 - 240V
220 - 240V
R
110 - 120V
CV1-4
TUNING
L9
FM
IF
RV2
FINE
TUNING
S1-8
BAND
ON
T
OFF
S305
HIGH SPEED
D319
OPR/BATT
D320
FM STEREO
7
8
5
4
11
9
32
1
9
12
29
MIC
AMP
22
27
28
BUFFER
Q102
BUFFER
Q201
BUFFER
Q106
BUFFER
Q105
D307,308
D310-312
D310-312
REG.
Q372
BUFFER
Q205
BUFFER
Q206
TONE
AMP
Q104
MAXI BASS
SWITCH
Q107
MAXI BASS
SWITCH
Q207
SOUND
EQUALIZER
Q101,103
17
3
1
6
8
TREBLE,
BASS
ANALOG SWITCH
MUTE
Q313
LED DRIVER
Q309,310
MUTE
CONTROL
Q315,316
10
9
7
11
S306
SOUND
SELECT
J301
PHONES
SP301
WOOFER
(L-CH)
SP303
TWEETER
(L-CH)
J304
SPEAKER
D318
MAXI BASS
S301
MAXI BASS
VDD
TU+B
OR
HE301
ERASE
HEAD
R-CH
R-CH
VREF
S304
J101
DIRECTION
(DECK A)
CT4
CT8
CT6
S1-7
S1-3
CT2
CV2
CT1
CV1
CF1
FM IF
T1
AM IFT
CF2
AM IF
CT3
CV3
S1-4
S1-1
S1-5
S1-6
CV4
L3 MW FERRITE-ROD
ANTENNA
L2
FM OSC
L1
FM RF
IC1
FM/AM
FRONT END,IF DET,
FM STEREO DEMODULATOR
MIC301
MIC
J306
CD/TV
LINE IN
S303
ISS
1 2
VDD
VDD
MIC-IN
A-L
B-L
CD-L
VREF
VREF
VREF
BIAS
TR-B
TR-B
BIAS
TR-C
TR-C
10
MIC/HS
RA-IN-L
FUNCTION
14
OUT-L
15
OUT-R
A/B
NS/HS
LCH
IN
IN
1
RCH
IN
IN
LCH
OUT
RCH
OUT
D341
D310,
311
D322
VCC1
VCC2
VBATT
F904
R-CH
Q312
MAXI
MAXI
BASS
CONTROL
D321
IC303
POWER AMP
IC304
LINE AMP
R-CH
RV301
VOLUME
M
KEY1
KEY2
KEY3
KEY4
KEY5
KEY2
KEY3
KEY4
KEY5
R-CH
DRY BATTERY
SIZE "D"
(IEC DESIGNATION R20)
8PCS,12V
J902
DC IN 12V
!
D901-904
F901
F902
T901
POWER
TRANSFORMER
J901
~
AC IN
Q2
D3
D377
D304
D374
D378
D306
D309
D905
D323,
324
Q373
POWER ON
INITIAL MUTE
Q301
Q303
INV.
Q317
DUBBING
SPEED
CONTROL
TU+B
TU+B
VCC
ST IND
AFC
BAND SEL
IC301
REC/PB PRE AMP
R-CH
IC302
TREBLE/BASS
CONTROL
FLAT
GROOVE
LIVE
POP
CINEMA
KEY4
KEY4
KEY2
KEY3
KEY5
KEY1
KEY3
KEY2
KEY1
KEY5
M
D317
D316
D315
D314
D313
NC
Q305
Q306
Q308
ISS SWITCH
Q307
TAPE CONTROL
RV302
RV302
TAPE SPEED
S1-2
Q304
TAPE
TAPE
CONTROL
VBATT
VBATT
VDD
-1
-3
-3
-4
T301
S304
(REC/PB)
PB REC
FLAT
RF IN
FM RF
IN
IN
AM IF
IN
IN
FE
OUT
FM RF
FM OSC
AM RF
REG OUT
AM OSC
LCH OUT
RCH OUT
AFC/
AGC
R-CH
VDD
F903
S302-1
~
AC IN
OR
KEY1
KEY2
KEY2
KEY3
KEY5
KEY4
TONE
AMP
Q104
4
SIGNAL
MUTE
L
H
+B
GND
-1
L
-2
R
R-CH
Signal path
R-ch is omitted due to same as L-ch.
: MW
: FM
: SW
: PB(DECK B)
: PB(DECK A)
: REC(DECK B)
: CD/TV LINE
6-2. BLOCK DIAGRAM
CFS-929S
14
14
6-3. PRINTED WIRING BOARDS — TUNER SECTION — • Refer to page 12 for Circuit Boards Location.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
Common Note on Schematic Diagrams:
• 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.
• 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
• 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.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
TUNER SECTION
no mark : FM
(
(
) : MW
<
> : SW
MAIN SECTION
no mark : FM
(
(
) : PB
<
> : REC
[
] : DUBBING
• 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.
F
: FM
f
: MW
h
: SW
E
: PB (DECK A)
d
: PB (DECK B)
G
: REC (DECK B)
J
: CD/TV LINE
• Abbreviation
E15
: AC 220-240V area in E model
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.
Replace only with part number specified.
Common Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
• Abbreviation
E15
: AC 220-240V area in E model
EA
: Saudi Arabia model
UAE
: United Arab Emirates model
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
Q2
L4
L5
L6
L7
L8
T1
CF1
S1
Q1
IC1
L2
L3
D3
D1
D2
CNP1
ANT1
CF2
C33
C34
C35
C38
C32
C43
C22
R11
C31
C37
C48
R7
R6
C36
C46
C45
C11
C41
C24
C23
C7
R9
C28
C47
C26
C25
L10
L1
C2
C10
R2
R3
R4
R8
C40
C39
C30
C5
C6
C3
CT3
CV3
CV1
CT1
CV4
CT4
CV2
CT2
C4
C12
C9
C8
R10
C20
C21
C16
C15
C17
C18
C13
C19
C14
R1
JW1
JW2
JW4
JW5
JW6
JW7
JW8
JW10
RV1
C49
L9
L2
JW9
JW11
JW12
CT8
CT6
C50
JW3
W2
W1
W3
RV2
R13
R12
C1
RED
BRN
RED
RED
WHT
BLU
WHT
BLU
YEL
BLK
WHT
BLU
D1
C-2
D2
C-2
D3
E-3
IC1
G-8
Q1
E-5
Q2
H-9
• Semiconductor
Location
Ref. No.
Location
(Page 16)
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