Sony CFD-V15 Service Manual page 9

• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
< > : AEP, UK, Singapore, Russian model only
<< >>: East European model only
[ ] : Italian model only
(( )) : Saudi Arabia model only
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 520kHz
1,780kHz
CT4
[1,630kHz]
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
FM IF ALIGNMENT
Adjust for a maximum reading on level meter.
T1
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
86.5MHz
L2
[87.35MHz] ((87.35MHz))
109.5MHz
CT2
((107.8MHz))
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
86.5MHz
L1
[87.35MHz] ((87.35MHz))
109.5MHz
CT1
((107.8MHz))
Adjustment Location : Main board (See page 10)
455kHz
[516kHz] ((516kHz))
<1,680kHz> <<1,680kHz>>
((1,630kHz))
620kHz
1,400kHz
10.7MHz
<87.0MHz> <<64.0MHz>>
<108.3MHz> [108.25MHz]
<87.0MHz> <<68.0MHz>>
<102MHz> [108.25MHz]
VCO Adjustment
Procedure :
FM RF signal
generator
Carrier frequency : 98MHz
Modulation : No modulation
Output level : 1.38mV (–55dB)
1. Connect the frequency counter to 4 and 7 pin of IC 1 as
shown the figure below.
2. Turn the set to 98MHz.
3. Adjust RV1 for 76kHz±500Hz reading frequency counter.
[ MAIN BOARD] (Conductor side)
30
16
Adjustment Location : Main board (See page 10)
How to put the set into CD Test Mode
1. Set the function switch to power off.
2. Set the function switch to CD while
≠ key and p key pressing.
The set is into CD test mode (88 is displayed).
3. Turn the power off to release test mode.
– 9 –
telescopic
antenna
terminal
0.01 µ F
set
frequency counter
1 µ F
33k Ω
IC 1
1
R6
4
7
C15
15