Yaesu FTdx5000 Series, Technical Supplement

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ALIGNMENT-6
Alignment
FT
DX
5000 Series Technical Supplement
Main Receiver Adjustment
1st Local Oscillator Adjustment
Set the following controls as indicated:
[IPO] button: AMP1
[ATT] button: OFF
[FLT] button: THRU
[R.FLT] button: AUTO
[AGC] button: AUTO
[RF GAIN] knob: Fully clockwise
[MODE] button: CW
Connect the RF millivoltmeter to TP3038 on the
RX-1 Unit.
Press and hold in the [1(1.8)], [2(3.5)], and [3(7)]
keys, while turning the radio on, to enter the
alignment mode.
Select the appropriate “Alignment Parameter”
using the (VFO-A)[SELECT] knob per the chart
below, and adjust the (VFO-B)[SELECT] knob for
the corresponding RF millivoltmeter reading at
each frequency.
Press and hold in the [MENU] button for 2 sec-
onds to save the new setting and exit from the
alignment mode.
2nd/3rd Local Level Adjustment
Set the following controls as indicated:
[IPO] button: AMP1
[ATT] button: OFF
[FLT] button: THRU
[R.FLT] button: AUTO
[AGC] button: AUTO
[RF GAIN] knob: Fully clockwise
Connect the RF millivoltmeter to TP3023 on the
RX-1 Unit.
Adjust T3020 on the RX-1 Unit for maximum de-
flection on the RF millivoltmeter (more than +0.5
dBm).
IF Transformer Adjustment
Set the following controls as indicated:
[IPO] button: AMP1
[ATT] button: OFF
[FLT] button: THRU
[AGC] button: AUTO
[RF GAIN] knob: Fully clockwise
[MODE] button: CW
Set the Main Band (VFO-A) frequency to 14.200
MHz in the CW mode.
Connect the AF millivoltmeter and 4 Ohm
dummy load to the EXT SP jack.
Connect the RF Signal Generator to the “ANT 1”
jack, then set the output level to 0 dBµ at the
14.200 MHz.
Set the Roofing filter bandwidth to “3 kHz” by
pressing the [R.FLT] Switch.
Adjust T3025, T3021 and T3018 on the RX-1 Unit
in succession several times for maximum deflec-
tion on the AF millivoltmeter.
If the Main S-meter deflects while adjusting, re-
duce the RF Signal Generator output so that the
Main S-meter does not deflect.
Set the Roofing filter bandwidth to “6 kHz” by
pressing the [R.FLT] Switch.
Adjust T3032 and T3027 on the RX-1 Unit in suc-
cession several times for maximum deflection on
the AF millivoltmeter.
If the Main S-meter deflects while adjusting, re-
duce the RF Signal Generator output so that the
Main S-meter does not deflect.
Set the Roofing filter bandwidth to “15 kHz” by
pressing the [R.FLT] Switch.
Adjust T3031 and T3026 on the RX-1 Unit in suc-
cession several times for maximum deflection on
the AF millivoltmeter.
If the Main S-meter deflects while adjusting, re-
duce the RF Signal Generator output so that the
Main S-meter does not deflect.
A
LIGNMENT
P
ARAMETER
02-01 M-L1.8
02-02 M-L3.5
02-03 M-L7
02-04 M-L14
02-05 M-L21
02-06 M-L28
02-07 M-L50
VFO-A F
REQUENCY
1.850 MHz
3.750 MHz
7.100 MHz
14.200 MHz
21.200 MHz
28.700 MHz
50.100 MHz
RF
MILLIVOLTMETER
1.10 Vrms (±0.05 Vrms)
1.10 Vrms (±0.05 Vrms)
1.10 Vrms (±0.05 Vrms)
1.10 Vrms (±0.05 Vrms)
1.0 Vrms (±0.05 Vrms)
1.0 Vrms (±0.05 Vrms)
0.6 Vrms (+0.05 Vrms/–0.1 Vrms)