Tuner Alignment - Hitachi FX-10 Service Manual

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TUNER ALIGNMENT
Equipment Required
1. AMSG.
Loop Antenna
Output Meter
Oscilloscope
Frequency Counter
FM S.G.
Digital Multi Meter (DMM)
Dummy Load 47k Q
ONHARWN
AM IF Alignment (Figures 4 and 5)
Frequency | Tuning
of Sweep Dial
Generator Setting
Frequency
IF Calibration 999 kHz 999 kHz Obtain sine-wave and
maximum amplitude.
Max. | AAA
of Sweep Dial
MW Alignment (Figures 4 and 5)
Tuning Range 522 kHz 522 kHz L103 Vt DMM1.1+0.1V
Adjustment of 603 kHz 603 kHz
Tracking
1404 kHz 1404 kHz TC101
Repeat the above adjustment.
Tuning
Obtain sine-wave and
maximum amplitude.
Max. | HAP
LW Alignment (Figures 4 and 5)
Frequency | Tuning
of Sweep Dial
Generator Setting
Calibration
maximum amplitude.
Adjustment of 171 kHz 171 kHz
Tracking
263 kHz 263 kHz TC102 Has | | {| I a
Repeat the above adjustment.