Yaesu FTDX3000 Technical Supplement page 29

SWR Meter Adjustment
 Set the VFO-A frequency to 1.820 MHz in the
USB mode.
 Connect the 50-Ohm Dummy Load and Watt-
meter to the "ANT 1" Jack.
 Disconnect the 3-pin plug from J1018 on the
MAIN Unit, then apply a 4.20 V DC voltage to
pin 2 of J1018, and 0.84 V DC to pin 3 of J1018.
 Rotate the [PROC/CAR] knob for Minimum.
 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.
 Rotate the Main Tuning Dial knob to select the
alignment parameter "23-01 SWR-MTR1.5 1.8"
 Press the [MOX] button, then rotate the
[CLAR(VFO-B)] knob so that the SWR meter
(on the front panel) reading is "1.5". The SWR
meter reading (1.5) is broad (few points). There-
fore, set the [CLAR(VFO-B)] knob to the center
of this broad range.
 Release the [MOX] button.
 Apply a 4.20 V DC voltage to pin 2 of J1018,
and 1.40 V DC to pin 3 of J1018.
Pin 3 of J1018
mAin U
nit
A P
lignment oints
 Rotate the Main Tuning Dial knob to select the
alignment parameter "23-02 SWR-MTR2.0 1.8"
 Press the [MOX] button, then rotate the
[CLAR(VFO-B)] knob so that the SWR meter
(on the front panel) reading is "2.0." The SWR
meter reading (2.0) is broad (few points). There-
fore, set the [CLAR(VFO-B)] knob to the center
of this broad range.
 Release the [MOX] button.
 Apply a 4.20 V DC voltage to pin 2 of J1018,
and 2.10 V DC to pin 3 of J1018.
 Rotate the Main Tuning Dial knob to select the
alignment parameter "23-03 SWR-MTR3.0 1.8"
 Press the [MOX] button, then rotate the
[CLAR(VFO-B)] knob so that the SWR meter
(on the front panel) reading is "3.0." The SWR
meter reading (3.0) is broad (few points). There-
fore, set the [CLAR(VFO-B)] knob to the center
of this broad range.
 Release the [MOX]button.
 Perform the same procedures for the Alignment
Menus "23-05 SWR-MTR1.5 14" through "23-
07 SWR-MTR3.0 14", "23-09 SWR-MTR1.5 50"
through "23-11 SWR-MTR3.0 50".
Note: Please do not change the the Alignment
Menus "23-04 SWR-MTR CO 1.8", "23-07 SWR-
MTR CO 14" and "23-12 SWR-MTR CO 50".
These parameters are always 128.
 Press and hold in the [MENU] button for 2 sec-
onds to save the new settings and exit the align-
ment mode.
 Connect the 3-pin plug to J1018 on the MAIN
Unit.
Important Notice: If it will be in a transceiver
transmitting state, without connecting the 3-pin
plug to J1018, there is a possibility that a final
transistor may break.
ALIGNMENT-18
Alignment
FT 3000 Technical Supplement
DX