Sony FD-40E - Page 13

Horizontal Frequency (H:-FREQ) Adjustment
1, Short-circuit between IC501-pin (9) and
a©) with jumper wire.
2. Connect the frequency counter to IC501
pin @®. ‘
3.
Adjust
RV50O1
for
15.565
—
15.685.
kHz
reading
on
frequency
counter.
Vertical Amplitude (V°SIZE) Adjustment.
Horizontal
Amplitude
(H*SIZE)
Adjustment
—
1. Tune in an off-air signal
2. Adjust RV552 for the best vertical ampli-
tude.
1. Tune in an off-air signal.
2.
Adjust.
RV8SS.
for
the
best
horizontal
amplitude.
frequency counter
4.
After
the
adjustment,
remove
the
jumper
©
/
wire
in
step
1.
Keystone Correction (KEYST) Adjustment
1. Tune in an off-air signal.
DUTY MAX Adjustment and 17 V Adjust-
ment
ae Set RV855, (H-SIZE) to the mechanical
center. . ae
2. Adjust RV554 for the optimum picture.
Xx O x
Alla
Focus Adjustment
2. Connect digital voltmeter to Q856 col-
lector. ;
3. Adjust RV604 for a maximum reading on
digital voltmeter.
4. Adjust the external ‘de power supply
output to the DC IN 6 V jack to 4.8 V.
Ss Adjust RV603 "so that the digital volt-~
meter reading is 17 V. (Duty Max Adjust- _
ment) :
1.
Set
the
regulated
de
power
supply
voltage
—
to4.5V.
2. Tune in:an off-air signal.
3.
Adjust
RV802
for
the
best
focus
at
the
center of the picture.
e ee >
6. Adjust the external dc power supply out= ~
put
to
the
DC
IN
6
V
jack
to
6
V.
is
®s
:
7.
Adjust.
RV604
so
that
the
digital
volt-
M513
4.8
V
Adjustment
meter
reading
is-17
V.
(17
V
Adjustment)
1413
a
:
Suncetsciaital
Volimetsn
rs
eee
8.-After
the
adjustments,
perform
Horizon-
eee
ector.
tal
Amplitude
Adjustment.
424
2.
Adjust
RV601
for
4.8
V
reading
on
digit-
digital:
voltmeter
.
tre
al
voltmeter.
a]
:
digital
M512
voltmeter
|
1 36
Q603 collector
S
uPCE
——
Rv60o1
ont
~ NIMZ
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