Yaesu FTdx3000 Series, Техническое дополнение

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FT
DX
3000 Technical Supplement
Alignment
ALIGNMENT-13
Final Stage Idling Current Adjustment

Connect the DC ammeter between J5008 and
J5009 on the PA-A Unit.

Rotate the Main Tuning Dial knob to select the
alignment parameter “8-04 F1”.

Press the PTT button, then adjust the
[CLAR(VFO-B)] knob so that the DC ammeter
reading is “2.5 A (±50 mA)”.

Release the PTT button.

Rotate the Main Tuning Dial knob to select the
alignment parameter “8-05 F2”.

Press the PTT button, then adjust the
[CLAR(VFO-B)] knob so that the DC ammeter
reading is “2.5 A (±50 mA)”.

Release the PTT button.
Termination

Press and hold in the [MENU] button for one
second to save the new settings and exit the
alignment mode.

Disconnect the 50-Ohm resistors from J5001
and J5007, then connect the coaxial cables to
J5001 and J5007.

Re-connect the jumper plugs to J5008 and J5009.
Antenna Tuner Adjustment
CM Coupler Balance Adjustment

Connect the 50-Ohm Dummy Load and Watt -
meter to the “ANT 1” jack.

Connect the Digital DC voltmeter (high-Z) to
pin 3 of J5506 on the TUNER Unit.

Turn off the [TUNE] switch, then set the VFO-A
frequency to 24.900 MHz in the CW-USB mode.

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 “9-08 I-ALC 24”.

P r e s s t h e P T T b u t t o n , t h e n r o t a t e t h e
[CLAR(VFO-B)] knob for 50 Watts on the Watt -
meter.

Adjust TC5501 on the TUNER Unit for mini -
mum deflection on the DC voltmeter (less than
0.1 V).

Release the PTT button, then press the [MENU]
button momentarily to exit the alignment
mode.
tUneR U
nit
A
lignment
P
oints
J5008
J5009
PA U
nit
A
lignment
P
oints
TC5501
Pin 3 of J5506