Diagrams - Sony D-FJ61 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
0 dB = 1 µV
TUNER SECTION
• Switch Location
VOLUME : MAX
MEGA BASS : OFF
AVLS : NORMAL
[AM]
BAND: AM
Signal generator
AM RF signal
generator
Put the lead-wire
antenna close to
the set.
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
[FM]
BAND : FM
Signal generator
FM RF signal
generator
0.01µF
FM IN
point
75kHz(100%) amplitude modulation
T E
by 1kHz signal.
L 1 3 9 4 2 2 9 6 5 1 3
Output level: as low as possible
level meter
16 Ω
set
J301 (LINE OUT)
w w w
.
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• Repeat the procedures in each adjustment several times for the
maximum level meter indication.
• The frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1 450kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 620kHz
CT3 1,400kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 520kHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 86.5MHz
CT1 109.5MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 86.5MHz
Adjustment Location: Main board
T1 AM IF adjustment
CT1 FM TRACKING
L1 adjustment
L2 FM FREQUENCY
COVERAGE
adjustment
CT3
L3
L4 AM FREQUENCY
COVERAGE
adjustment
x a o u 1 6 3
y
i
— 9 —
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8
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• ¢ : internal component.
• 2 : nonflammable resistor.
• C : panel designation.
• H : adjustment for repair.
• U : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
cal for safety. Ne les remplacer que par une
Replace only with part piéce por tant le numéro
number specified. spécifié.
no mark : FM
( ) : AM
< > : CD
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: FM
f
: AM
Q Q
3 7 6 3 1
J : CD
• Abbreviation
CND : Canadian model
AUS : Australian model
JE : Tourist model
FR : French model
E13 : AC 220-230V area model
E33 : AC 100-240V area model
HK : Hong Kong model
KR : Korean model
E92 : AC 120V area model
AR : Argentina model.
CH : Chinese model.
G : German model.
EE : East European model.
EA : Saudi Arabia model.
AM TRACKING
adjustment
c o
.
SECTION 5

DIAGRAMS

2 4
9 9 8
• Waveforms
1
IC601 of XTAO
16.9MHz
VOLT/DIV: 1.2 V AC
TIME/DV: 20 nsec
2
IC801 ul XIN
4MHz
VOLT/DIV: 0.1 V AC
TIME/DV: 0.1 µsec
3
IC601 ua RFAC
VOLT/DIV: 0.1 V AC
TIME/DV: 0.1 µsec
4
IC61 uf XOUT
13.3 µsec
5 1 5 0 8 9 2 4 9
VOLT/DIV: 1.2 V AC
TIME/DV: 10 µsec
5
T81 C86
30 Vp-p
VOLT/DIV: 10 V AC
480 nsec
TIME/DV: 0.2 µsec
m
— 10 —
2
9 9
2.3 Vp-p
3.6 Vp-p
400 – 500
mVp-p
2.4 Vp-p
8 2 9 9