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Model
CFS-929S
Pages
37
Size
4.16 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfs-929s.pdf
Date

Sony CFS-929S Service Manual ▷ View online

10
CFS-929S
Adjustment Location: See page 11
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
L9
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
87.35 MHz (EA model)
86.5 MHz (E15, UAE model)
CT2
107.8 MHz (EA model)
109.5 MHz (E15, UAE model)
FM TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87.35 MHz (EA model)
86.5 MHz (E15, UAE model)
CT1
107.8 MHz (EA model)
109.5 MHz (E15, UAE model)
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
516 kHz (EA model)
520 kHz (E15, UAE model)
CT4
1,635 kHz (EA model)
1,680 kHz (E15, UAE model)
MW TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
600 kHz
CT3
1,400 kHz
SW1 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
2.2 MHz
CT6
7.3 MHz
SW1 TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
2.2 MHz
< confirmation >
7.3 MHz
SW2 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L8
6.8 MHz
CT8
22.5 MHz
SW2 TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L7
6.8 MHz
< confirmation >
22.5 MHz
  TUNER SECTION     0 dB = 1 µV
Common Setting:
SOUND SELECT control: FLAT
VOLUME control: MAX
MAXI BASS switch: OFF
• FM Section
BAND switch: FM
• MW Section
BAND switch: MW
FINE TUNING (RV2): mechanical center
• SW1/SW2 Section
BAND switch: SW1 or SW2
FINE TUNING (RV2): mechanical center
• Common Connecting Level Meter
telescopic
antenna terminal
0.01
µF
FM RF signal
generator
75kHz frequency deviation
by 1kHz signal
Output level: as low as possible
set
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
400Hz, 30% 
AM modulation
Output level: as low as possible
telescopic
antenna terminal
12pF
AM RF signal
generator
400Hz, 30% 
AM modulation
Output level: as low as possible
set
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
PHONES jack (J301)
set
32 
level meter
(range: 0.5–5 V ac)
11
CFS-929S
FM VCO Adjustment
Setting:
BAND switch: FM
Adjustment Location: – tuner board (component side) –
Procedure:
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.
Specification Value: 75.95 to 76.05 kHz.
telescopic
antenna terminal
0.01
µF
FM RF signal
generator
98MHz frequency deviation
by 1kHz signal
Output level: 0.1V (100dB)
set
33k 
TUNER board
IC1 pin 
4
IC1 pin 
7
digital frequency
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
CT6, L6
SW1 FREQUENCY
COVERAGE
ADJUSTMENT
CT8, L8
SW2 FREQUENCY
COVERAGE
ADJUSTMENT
L9
FM IF
ADJUSTMENT
T1
MW IF
ADJUSTMENT
RV1
FM VCO
ADJUSTMENT
CT3, L3
MW
TRACKING
ADJUSTMENT
L5
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
: Saudi Arabia model
UAE : United Arab Emirates model
12
CFS-929S
SECTION 6
DIAGRAMS
POWER board
RETAINER board
(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)
RETAINER board
(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
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
R
110 - 120V
CV1-4
TUNING
L9
FM
IF
RV2
FINE
TUNING
S1-8
BAND
ON 
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
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
BIAS
TR-C
10
MIC/HS
RA-IN-L
FUNCTION
14
OUT-L
15
OUT-R
A/B
NS/HS
LCH
IN
1
RCH
IN
LCH
OUT
RCH
OUT
D341
D310,
311
D322
VCC1
VCC2
VBATT
F904
R-CH
Q312
MAXI
BASS
CONTROL
D321
IC303
POWER AMP
IC304
LINE AMP
R-CH
RV301
VOLUME
M
KEY1
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
CONTROL
VBATT
VBATT
VDD
-1
-3
-4
T301
S304
(REC/PB)
PB     REC
FLAT
RF IN
FM RF
IN
AM IF
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
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