Pioneer TX-608 Instrukcja serwisowa - Strona 12

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8.2

AM TUNER

position.

flection of the SIGNAL meter indicator.

output frequency to 1400kHz also.

Core of Bar-Antenna

To terminal «———-D

(OUTPUT)

4.This

time

adjust

TCs

obtain

maximum

SIGNAL meter deflection.

. Repeat steps 1 to 4 above.

. Set the AM SG output level to 30dB, adjust the

core

of the

bar-antenna

and

at 600kHz,

and TC4 and TC2 at 1400kHz, in the same man-

ner as described in the above steps.

This is the

adjustment

for

optimum

sensitivity

across

the frequency band, and minimum difference in

sensitivity at different frequencies.

Oscilloscope

AM signal generator

"@©

OUT

1kQQ resistor

Fig. 8-3 AM tuner adjustments