Yaesu FT-450D, Technical Supplement

Page: 17 / 98

ALIGNMENT-9
Alignment
FT-450 Series Technical Supplement
Voltmeter Adjustment

Press and hold in the [ ATT / IPO ], [ NB ], and [ AGC ]
buttons, while turning the radio on, to enter the
alignment mode.

Adjust the DC Power Supply voltage is exactly
13.8 V.

Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "VM-ADJ".

Press the [ STO ] button.

Press and hold in the [ F ] button for 2 seconds to
save the new setting and exit from the alignment
mode.
ATAS Controller Adjustment

Connect the Digital DC voltmeter (high-Z) to the
"ANT" jack.

Press and hold in the [ ATT / IPO ], [ NB ], and [ AGC ]
buttons, while turning the radio on, to enter the
alignment mode.

Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "ATAS DN".

Press the [ STO ] button, then rotate the [ MAIN
DIAL ] knob for 8.0 V on the DC Voltmeter.

Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "ATAS BK".

Press the [ STO ] button, then rotate the [ MAIN
DIAL ] knob for 9.5 V on the DC Voltmeter.

Rotate the [ DSP/SEL ] knob to select the align-
ment parameter "ATAS UP".

Press the [ STO ] button, confirm that the DC Volt-
meter reading is more than 10.5 V.

Press and hold in the [ F ] button for 2 seconds to
save the new settings and exit from the alignment
mode.