Yaesu FT DX 9000 CONTEST - 2, Technical Supplement

Page: 43 / 410

ALIGNMENT-13
Alignment
MCF Adjustment
Connect the RF Signal Generator to the “ANT 1”
Jack, then set the output level to +30 dBµ at 14.200
MHz.
Set the SUB Band (VFO-B) frequency to 14.200
MHz in the CW mode.
Set the SUB Band’s Roofing Filter bandwidth to
“15 kHz.”
Adjust T8017 and T8018 on the RX-2 Unit for
maximum deflection on the Sub S-meter.
Set the SUB Band’s Roofing Filter bandwidth to
“6 kHz.”
Adjust T8019 and T8020 on the RX-2 Unit for
maximum deflection on the Sub S-meter.
Set the SUB Band’s Roofing Filter bandwidth to
“3 kHz.”
Adjust T8021 and T8022 on the RX-2 Unit for
maximum deflection on the Sub S-meter.
Set the RF Signal Generator output level to 0 dBµ
at 52.500 MHz (with ±3.5 kHz deviation @1 kHz).
Set the SUB Band (VFO-B) frequency to 52.500
MHz in the FM mode.
Set the SUB Band’s Roofing Filter bandwidth to
“AUTO.”
Adjust T8017 and T8018 on the RX-2 Unit for
maximum SINAD.
NB Circuit Adjustment
Connect the RF Signal Generator to the “ANT 1”
Jack, then set the output level to +30 dBµ at 14.200
MHz.
Set the SUB Band (VFO-B) frequency to 14.200
MHz in the CW mode.
Turn on the SUB Band (VFO-B) NB switch, then
set the SUB Band (VFO-B) NB knob to 12-o’clock
position.
Connect the RF millivoltmeter to TP8005 on the
RX-2 Unit.
Adjust T8027 and T8028 on the RX-2 Unit for
minimum deflection on the RF millivoltmeter.
Turn off the SUB Band (VFO-B) NB switch.
IF Trap Adjustment
Connect the RF Signal Generator to the “ANT 1”
Jack, then set the output level to +90 dBµ at 40.450
MHz.
Set the SUB Band (VFO-B) frequency to 28.700
MHz in the CW-U mode.
Adjust TC8002 on the RX-2 Unit for minimum
deflection on the Sub S-meter.
Set the SUB Band (VFO-B) frequency to 51.500
MHz in the CW-U mode.
Adjust T8001 and VR8001 on the RX-2 Unit in
succession several times for minimum deflection
on the Sub S-meter.