Read Sony CFD-V5 Service Manual online
– 11 –
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
455kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520kHz
CT4
1,780kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
620kHz
CT3
1,400kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
10.7MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
86.5MHz
CT2
109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
86.5MHz
CT1
109.5MHz
Adjustment Location : Main board (See page 13)
VCO Adjustment
Procedure :
Procedure :
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 76,000Hz reading frequency counter.
3. Adjust RV1 for 76,000Hz reading frequency counter.
Standard Value : 75,950 – 76,050Hz
[ MAIN BOARD] (Conductor side)
Adjustment Location : Main board (See page 13)
FM RF signal
generator
generator
Carrier frequency : 98MHz
Modulation : No modulation
Output level : 1.38mV (–55dB)
Modulation : No modulation
Output level : 1.38mV (–55dB)
set
telescopic
antenna
terminal
0.01
µ
F
JW2
C
2
JW319
JW316
FB1
JW320
JW317
Q310
JW3
C1
R7
VCO
VCO
CF1
C22
C21
CF2
C15
L2
C6
C14
R5
R8
C2
C3
C
3
C13
C
1
T2
C9
JW1
IC1
R2
C121
C19
C1
T1
R6
JW
C18
JW318
R3
JW321
JW
JW71
2
JW323
1
5
10
15
16
20
25
30
B
C
E
[MAIN BOARD]
(Conductor side)
(Conductor side)
frequency counter
33k
Ω
1
µ
F
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