Yaesu FTdx3000 Series, Technical Supplement, Page: 15 / 151

FT
DX
3000 Technical Supplement
Alignment
ALIGNMENT-4
loCAl U
nit
A
lignment
P
oints
J4005
J4004
T4005
T4012
T4010
T4009
TP4002
J4006
2nd/3rd Local Oscillator Adjustment

Disconnect the coaxial cable from J4005 on the
LOCAL Unit, then connect the RF millivoltme -
ter to J4005.

Adjust T4005 on the LOCAL Unit for maximum
deflection on the RF millivoltmeter (more than
-6 dBm).

Disconnect the RF millivoltmeter from J4005,
then connect the RF millivoltmeter to J4006.

Adjust T4009, T4010, and T4012 on the LOCAL
Unit for maximum deflection on the RF milli -
voltmeter (more than -2 dBm).

Disconnect the RF millivoltmeter from J4006,
then re-connect the coaxial cable to J4005.
VCO Adjustment

Connect the Digital DC voltmeter (high-Z) to
TP4002 on the LOCAL Unit.

Disconnect the coaxial cable from J4004 on the
LOCAL Unit, then connect the RF millivoltme -
ter to J4004.

Press and hold in the [1.8(1)], [3.5(2)], and [7(3)]
keys, while turning the radio on, to enter the
alignment mode.

Referring to the table below, select the appro -
priate “Alignment Parameter” using the Main
Tuning Dial knob per the chart below, and
adjust the listed components for the required
voltage, or confirm that the correct voltage is
present on each alignment parameter.

Disconnect the RF millivoltmeter from J4004,
then re-connect the coaxial cable to J4004.

Press and hold in the [MENU] button for one
second to save the new setting and exit the
alignment mode.
A
lignment
P
ArAmeter
1-07 VCO1-H
1-08 VCO1-L
1-09 VCO2-H
1-10 VCO2-L
1-11 VCO3-H
1-12 VCO3-L
1-13 VCO4-H
1-14 VCO4-L
1-15 VCO5-H
1-16 VCO5-L
A
djust
/ C
onfirm
Adjust T4013
Confirm
Adjust T4014
Confirm
Adjust T4015
Confirm
Adjust T4016
Confirm
Adjust T4017
Confirm
dC
voltmeter
5.0 V ±0.1 V
At least 0.6 V
5.0 V ±0.1 V
At least 0.6 V
5.0 V ±0.1 V
At least 0.6 V
5.0 V ±0.1 V
At least 0.6 V
5.0 V ±0.1 V
At least 0.6 V
rf
millivoltmeter
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm
At least –15 dBm