Pa Unit Adjustment; Pre-Drive Stage Idling Current Adjustment; Drive Stage Idling Current Adjustment; Press And Hold In The [1.8(1)], [3.5(2)], And [7(3)] - Yaesu FTDX3000 Technical Supplement

PA Unit Adjustment

Preparation
 Connect the 50-Ohm Dummy Load and Watt-
meter to the "ANT 1" jack.
 Disconnect the coaxial cables from J5001 and
J5007 on the PA Unit, then terminate J5001 and
J5007, each with a 50-Ohm resistor.
 Disconnect the jumper plugs from J5003 and
J5005 on the PA-A Unit.

Pre-Drive Stage Idling Current Adjustment

 Connect the DC ammeter to J5003 on the PA-A
Unit.
 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 "8-01 PDR".
 P r e s s t h e P T T b u t t o n , t h e n a d j u s t t h e
[CLAR(VFO-B)] knob so that the DC ammeter
reading is "100 mA (±5 mA)".
 Release the PTT button.
J5007

Drive Stage Idling Current Adjustment

 Connect the DC ammeter to J5005 on the PA-A
Unit.
 Rotate the Main Tuning Dial knob to select the
alignment parameter "8-02 DR1".
 P r e s s t h e P T T b u t t o n , t h e n a d j u s t t h e
[CLAR(VFO-B)] knob so that the DC ammeter
reading is "700 mA (±50 mA)".
 Release the PTT button.
 Rotate the Main Tuning Dial knob to select the
alignment parameter "8-03 DR2".
 P r e s s t h e P T T b u t t o n , t h e n a d j u s t t h e
[CLAR(VFO-B)] knob so that the DC ammeter
reading is "700 mA (±50 mA)".
 Release the PTT button.
PA U A P
nit lignment oints
ALIGNMENT-12
Alignment
FT 3000 Technical Supplement
DX
J5005
J5003
J5001