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D-40E
FD-40E
Horizontal Frequency (H-FREQ) Adjustment
1.
Short-circuit between IC501 pin Q) and
with jumper wire.
. Connect the frequency counter to ICS01
pin
_ Adjust RVSO1 for 15.565 — 15.685. kHz
reading on frequency counter.
. After the adjustment, remove the jumper
wire in step 1.
frequency counter
DUTY
MAX Adjustment and 17 V Adjust-
ment
1.
Set RV855
(H-°SIZE) to the mechanical
center.
eee
. Connect
digital voltmeter to Q856
col-
lector.
. 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.
. Adjust
RV603 'so that the digital volt-
meter reading is 17 V. (Duty Max Adjust-
ment)
. Adjust the external dc power supply out-
put to the DC IN 6 V jack to 6 V.
. Adjust RV604
so that the digital volt-
meter reading is-17 V. (17 V Adjustment)
. After the 'adjustments, perform Horizon-
tal Amplitude Adjustment.
digital voltmeter
_ SECTION 6
DIAGRAMS
6-1. TUNER SCHEMATIC DIAGRAM
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Note: Tuner reference numbers are not included
. . in the Electrical Parts List.
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