Electrical Adjustments - Sony D-FJ211 Service Manual

D-FJ211
TUNER SECTION 0 dB = 1µV
AM section
BAND : AM
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
FM section
BAND :FM
TJ3
0.01 µ F
(FM RF IN)
[MAIN BOARD]
(Side A)
TJ304
J102
A A
D306
D
TAP1
VDR305
VDR302
TJ3
(FM RF IN)
TJ307
FL2
TJ605
TJ802
TJ606
TJ5
TJ410
L606
TJ608
TJ801
TJ611
TJ10
606
set
phones jack (J301)
6
SECTION 4

ELECTRICAL ADJUSTMENTS

Put the lead-wire
antenna close to
the set.
FM RF signal
generator
33.75kHz frequency deviation
by 1kHz signal.
Output level :
as low as possible
C810
L4
D3
D2 C21
C22
L3
R844
R815
TJ1
TJ6
IC1
TJ8
L2
level meter
16 Ω
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust parts Frequency display
L5 530kHz <531kHz>
Confirmation 1,710kHz <1,602kHz>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1 1,400kHz <1,395kHz>
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency display
Confirmation 87.5MHz
L2 108MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
Confirmation
Adjustment Location : Main board
Frequency Coverage Adjustment
Setting :
[MAIN BOARD]
(Side A)
J102 TJ304
A A
D306
D
C810
TAP1
VDR305
VDR302
TJ3
D3
(FM RF IN)
TJ307
C22
FL2
TJ605
TJ802
TJ6
TJ606
TJ5
(TU GND)
TJ410
L606
TJ608
TJ801
TJ611
TJ10
606
< > : 9kHz step
Reading on digtal
voltmeter
Adjustment value : 0.7V
Standard value : 0.2–1.4V
Adjustment value : 5.0V
<4.4V>
Standard value : 4.3–5.7V
<3.7–5.2V>
620kHz <621kHz>
Reading on digtal voltmeter
Standard value : 4.3–5.7V
Adjustment value : 9.5V
Standard value : 9.0–10.0V
87.5MHz
108MHz
digital voltmeter
(DC range)
TJ1 (VT)
TJ6 (TU GND)
L4
D2 C21
L3
R844
R815
TJ1
(VT)
IC1
TJ8
L2