DOWNLOAD Sony CFS-515S Service Manual ↓ Size: 2.54 MB | Pages: 27 in PDF or view online for FREE

Model
CFS-515S
Pages
27
Size
2.54 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfs-515s.pdf
Date
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Sony CFS-515S Service Manual ▷ View online

– 9 –
  TUNER SECTION
 0dB=1 
µ
V
• Switch location
FUNCTION switch
• • • • • • • • • • • • • • • • • 
RADIO
PRESET MODE
• • • • • • • • • • • • • • • • • • • • • 
MANUAL
GRAPHIC EQUALIZER
• • • • • • • • 
center click
BALANCE
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • 
center click
VOLUME
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 
MAX
MEGA BASS
• • • • • • • • • • • • • • • • • • • • • • • • • 
mechanical center
 MW Section
Procedure :
BAND  switch
: MW
FINE TUNING control : mechanical center
 SW Section
Procedure :
BAND  switch
: SW1, SW2
FINE TUNING control : mechanical center
 FM Section
Procedure :
BAND  switch
: FM
FINE TUNING control : mechanical center
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
no mark
: COM
<          > : Saudi Arabia model
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520kHz
< 516kHz >
CT4
1,680kHz
< 1,630kHz >
MW TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
600kHz
CT3
1,400kHz
SW1 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
2.2MHz
CT6
7.3MHz
SW1 TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
2.2MHz
CT5
7.3MHz
SW2 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L8
6.8MHz
CT8
22.5MHz
SW2 TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L7
6.8MHz
CT7
22.5MHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 <L21>
86.5MHz
< 87.35MHz >
CT2
109.5MHz
< 107.8MHz >
FM TRACKING  ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
86.5MHz
< 87.35MHz >
CT1
109.5MHz
< 107.8MHz >
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to 
the set.
AM RF signal
generator
telescopic
antenna
terminal
12PF
30% amplitude modulation 
by 400Hz signal.
Output level : as low as possible
FM RF signal
generator
telescopic
antenna
terminal
0.01
µ
F
22.5kHz frequency deviation 
by 400Hz signal.
Output level : as low as possible
set
32
Ω
phones jack
level meter
Adjustment Location : Tuner board (page 10)
– 10 –
FM VCO  Adjustment
Procedure :
1. Connect the frequency counter to 4 and 7 pins of IC1 as shown
the figure below.
2. Turn the set to 98MHz.
3. Adjust RV1 for 75.95kHz – 76.05kHz reading on frequency
counter.
[TUNER BOARD]  (Conductor side)
FM RF signal
generator
Carrier frequency : 98MHz 
Modulation : no modulation
Output level : 65dB (1.8mV)
telescopic
antenna
terminal
set
0.01
µ
F
L4 : MW Frequency Coverage 
       Adjustment
CT5 : SW1 Tracking Adjustment
L5 : SW1 Tracking Adjustment
L7 : SW2 Tracking Adjustment
CT7 : SW2 Tracking Adjustment
L3 : MW Tracking Adjustment
CT3 : MW Tracking Adjustment
L1 : FM Tracking Adjustment
CT1 : FM Tracking Adjustment
L6 : SW1 Frequency Coverage 
       Adjustment
CT6 : SW1 Frequency Coverage
          Adjustment
L8 : SW2 Frequency Coverage 
       Adjustment
CT8 : SW2 Frequency Coverage 
          Adjustment
T2 : FM IF Adjustment
EXCEPT Saudi Arabia model
Saudi Arabia model
T1 : AM IF Adjustment
RV1 : FM VCO Adjustment
L21 :  FM Frequency 
          Coverage Adjustment
L2 :  FM Frequency 
        Coverage Adjustment
CT2 : FM Frequency Coverage 
       Adjustment
CT4 : MW Frequency 
         Coverage Adjustment
(Component side)
[TUNER BOARD] 
Adjustment Location : Tuner board
frequency counter
1
µ
F
33k
Ω
– 11 –
– 13 –
– 12 –
SECTION 5
DIAGRAMS
• Signal path.
F
: FM
E
: PB (L-CH)
d
: PB (R-CH)
a
: REC (L-CH)
G
: REC (R-CH)
CFS-515S
5-1. BLOCK DIAGRAM
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