Transmitter Section; Overcurrent Alc; Maximum Rf Power Output; Alc Meter Sensitivity - Yaesu Mark-V FT-1000MP Field Technical Supplement

Alignment

Transmitter Section

Tx 2nd Mixer
r Select the CW mode, and connect the spectrum analyzer
= 70.455 MHz) to J2008.
(F
CENTER
r Key the transmitter, and adjust VR2006 to minimize the 2nd
local spurious (±8.2 MHz from the 2nd local frequency).
Transmitter IF Interstage Transformers
r Connect the 50 W dummy load to the antenna jack. Preset the
RF PWR control fully clockwise, and MIC gain control fully
counter-clockwise. Select CW mode.
r Key the transmitter, and adjust T1001, T1002, T2013 ~
T2015, and T2017 ~ T2019 in succession several times for
maximum indication on the ALC meter.

Overcurrent ALC

r With the inline wattmeter and 50 W dummy load connected to
the antenna jack and the RF PWR control fully clockwise. Set
S3002 on the AF Unit to the "100W" position.
r Tune the transceiver to 3.500 MHz, and select the CW mode.
Key the transmitter, and adjust VR3008 for 140 watts on the
wattmeter.

Maximum RF Power Output

r Preset the RF PWR control fully clockwise, and tune the trans-
ceiver to 14.2000 MHz. Select the CW mode, key the trans-
mitter, and adjust VR3003 for 100 watts on the meter.
25 W and 10 W RF Power Output
r Connect the in-line wattmeter and 50 W dummy load to the
antenna jack, select the CW mode, and tune to 14.2000 MHz.
r Set the menu function 4-0 to "Lo-2."
Set the RF PWR control fully clockwise.
r Key the transmitter, and adjust VR3007 for 25 watts (±2 watts)
on the power meter.
r Recall menu function 4-0, and select "Lo-1." Key the trans-
mitter, and adjust VR3006 for 10 watts (±1 watt) on the power
meter.
r After adjustment, recall menu function 4-0., then select "HI."
VR3010
PKT RX AF Level Preset
VR3001
Key Beeper Level Preset
VR3009
SSB Squelch Threshold
VR3003
Maximum RF Power Output
VR3006
25 W and 10 W RF Power Output
VR3007
25 W and 10 W RF Power Output
3-8
TX Drive Control
r Set the RF PWR control fully counter-clockwise, and select
the CW mode. Key the transmitter, and adjust VR3013 so that
one segment is displayed on the PO meter.

ALC Meter Sensitivity

r Set the meter function to ALC, then inject a 1 kHz tone at 4 mV
level to the microphone jack. Key the transmitter, and adjust
the MIC gain control so the meter just begins to deflect.
r Increase the injection level to 10 mV, and adjust VR3005 so
that the meter deflects to the top edge of the ALC zone.
TX IF Gain
r Turn the transceiver off. Next, press and hold the FAST and
LOCK keys (near the main VFO knob), then turn the trans-
ceiver on.
r For the frequencies listed in the table below, set the transceiver
to LSB mode, and inject a 1 kHz tone at 0.5 mV level to the
microphone jack. Set the MIC gain control fully clockwise. Be
sure to check the Menu display for the correct alignment item.
TX IF Gain Alignment
10.125 MHz
14.175 MHz
18.100 MHz
21.200 MHz
24.900 MHz
28.500 MHz
29.500 MHz
Note: For all adjustments below, set the transceiver to LSB,
and inject a 0.5 mV, 1-kHz to the MIC jack. Set the MIC
gain control fully clockwise.
AF Unit Test & Alignment Points
TX IF Gain Alignment
Menu
Tune to:
Function 9-2
1.800 MHz T IF-018
3.750 MHz T IF-035
7.150 MHz T IF-070
T IF-100
T IF-140
T IF-180
T IF-210
T IF-245
T IF-280
T IF-290
Key Tx and adjust
Main VFO Dial for
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
Mininum ALC Indication
VR3014
PO Meter Calibration
VR3015
SWR Meter Calibration
VR3002
Overcurrent ALC
REV ALC
VR3005
ALC Meter Secsitivity
VR3012
SSB Modulation Balance
VR3013
TX Drive Control
VR3011
AM Carrier Level