Roadstar HRA-1000, Service Manual

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INSTRUMENTS REQUIRED: AM&FM Signal generator
AC CTVM Oscilloscope
AM IF ALIGNMENT
Set output of signal generator no higher than necessary to obtain an output reading.
Slide the function switch to the tuner position and set the band button to select AM.
Set volume control to reference output.
RADIO SETTING ADJUSTMENT REMARKS
GENERATOR
465KHz Tune to 600KHz Scope across T102 Adjust the "U"
400Hz (high end). speaker jack Wave for best &
Modulation maximum output
AM RF ALIGNMENT
SIGNAL RADIO SETTING ADJUSTMENT REMARKS
GENERATOR
540KHz Tune to 540KHz
400Hz (low end). T101
Modulation
1600KHz Tune to 1600KHz
400Hz (high end). PVC-TC1
Modulation
600KHz 600KHz VTVM&SCOPE AM ANT Coil For maximum and
Across Speaker Good output
1400KHz 1400KHz PVC-TC2 For maximum and
Good output
Repeat 4 steps to get the ideal value of FM frequency range &sensitivity
FM RF ALIGNMENT
Connect Signal Generator across antenna terminals.
Press the function button to select the tuner position and the band to FM position.
Adjust Volume control to reference output.
SIGNAL RADIO SETTING
GENERATOR ADJUSTMENT REMARKS
88MHz Tune to 88MHz L103
1000Hz (low end )
modulation
108MHz Tune to 108MHz PVC-TC3
1000Hz (high end ).
90MHz 90MHz VTVM&SCOPE L104 for good & maximum.
Across SPEAKER output
106MHz 106MHz Jack PVC-TC4 for good & maximum.
output
Repeat 4 steps to get the ideal value of FM frequency range &sensitivity
ALIGNMENT PROCEDURES
SIGNAL CONNECTION
TITLE: ALIGNMENT
CONNECTION
CONNECTION
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