Rf Amplifiers; Vrf; S-Meter Full Scale - Yaesu Mark-V FT-1000MP Field Technical Supplement

RF Amplifiers

r Confirm that menu function 8-4 is set to "Tuned," then connect
the RF signal generator to the antenna jack, and inject a +20
dBµ signal.
r Referring to the table below, tune the transceiver and RF signal
generator to the listed frequencies, and adjust the correspond-
ing components for the levels shown.
RF Amp Alignment
Tune SG & Radio to
1.910 MHz
3.725 MHz
7.110 MHz
28.200 MHz

VRF

r Turn the transceiver off, then press and hold the [ SUB ] and
[ ENT ] keys of the keypad, and turn the transceiver on again.
r Connect the RF signal generator to the antenna jack, and inject
a +20 dBµ signal.
r Press the VRF button on the shuttle Jog, then adjust the VRF/
MEM CH knob to illuminate the "center" segment of the Ex-
panded Tuning Scale (above the main VFO-A frequency dis-
play).
r Referring to the table below, tune the transceiver and RF signal
generator to the listed frequencies, and adjust the correspond-
ing components for the levels shown.
VRF Alignment
Tune SG & Radio to
1.910 MHz
3.775 MHz
7.260 MHz
10.100 MHz
14.100 MHz
T1026
T1027
Adjust for
T1020 Max S-meter
T1021 Max S-meter
T1022 Max S-meter
T1016 Max S-meter
Adjust for
T1026 & T1027
Max S-meter
T1028 & T1029
Max S-meter
T1030 & T1031
Max S-meter
T1032 & T1033
Max S-meter
T1034 & T1035
Max S-meter
T1028 T1030 T1032
VRF VRF VRF VRF
T1029 T1031 T1033
VRF VRF VRF VRF
RF Unit Test & Alignment Points
IF Gain
r Turn the transceiver off, then press and hold in the FAST and
LOCK buttons (near the main VFO knob), and turn the trans-
ceiver on again.
r Connect the RF signal generator to the antenna jack, and inject
a +11 dBµ signal. Select menu function 9-1, and adjust the
main VFO knob for a 1-segment S-meter deflection.

S-meter Full Scale

r Connect the RF signal generator to the antenna jack, and inject
a +100 dBµ signal.
r Tune for peak indication on the S-meter. Now adjust VR2002
for S9+60 dB on the S-meter.
Noise Blanker
r Set menu function 2-8 to "A15," then press the NB switch on,
and connect the DC voltmeter to TP2001.
r Connect the RF signal generator to the antenna jack and inject
a +40 dBµ signal, then adjust T2001 and T2002 in succession
several times for minimum DC voltmeter indication.
r Reduce the RF signal level to +20 dBµ, and confirm at least
2.8 V on the DC voltmeter.
IF Notch
r Preset the NOTCH control to 12-o'clock, then inject a +30
dBµ signal at 14.2000 MHz to the antenna jack. Select USB,
then tune the transceiver to 14.20150 MHz (so that a 1500 Hz
tone is heard).
r Press the NOTCH button, then adjust VR2005 and L2004 for
minimum S-meter indication.
FM Squelch Threshold
r With the FM mode selected, and no signal present, set the SQL
control to the 11-o'clock position, then adjust VR2001 so that
the squelch just closes.
T1034
VRF
T1035
VRF
T1021
Transmitter IF Interstage Transformer
T1022
Transmitter IF Interstage Transformer
T1020
Transmitter IF Interstage Transformer
T1016
Transmitter IF Interstage Transformer
VR1001
RF Interstage Transformers Coarse Alignment
1st Mixer Balance
VR1002
RF Interstage Transformers Coarse Alignment
1st Mixer Balance
T1009
IF Interstage Transformers (II)
T1008
IF Interstage Transformers (II)
T1007
IF Interstage Transformers (II)
T1005
IF Interstage Transformers (II)
T1006
IF Interstage Transformers (II)
Alignment
3-7