Reference Frequency; 2Nd Local Carrier Output Level; Pll Vcv Voltage; Tx If Circuit (Ssb/Cw) - Yaesu FT-450/D Technical Supplement

Alignment

Reference Frequency

 Connect the Frequency Counter to TP2001 on the
RF-IF-Unit.
 Adjust X2001 so that the Frequency Counter read-
ing is 22.625 MHz ±10 Hz.

2nd Local Carrier Output Level

 Connect the RF millivoltmeter to TP2009 on the
RF-IF-Unit.
 Adjust T2017 on the RF-IF-Unit for maximum
deflection on the RF millivoltmeter (more than
25 mVrms).

PLL VCV Voltage

 Connect the Digital DC voltmeter (high-Z) to
TP2006 on the RF-IF-Unit.
 Set the [MODE] switch to FM.
 Referring to the table below, adjust the listed com-
ponents for the required voltage, or confirm that
the correct voltage is present on each frequency
listed.
VFO-A F
REQUENCY
13.499 MHz
0.030 MHz
29.999 MHz
13.500 MHz
44.499 MHz
30.000 MHz
55.999 MHz
44.500 MHz

TX IF Circuit (SSB/CW)

 Connect the 50-Ohm Dummy Load and Wattme-
ter to the "ANT" jack.
 Disconnect the TMP plug from J2002 on the RF-
IF-Unit, and then connect the RF millivoltmeter
and 50 Ohm dummy load to J2002.
 Inject the 1 mV, 1 kHz audio signal to pin 5 of
MIC jack.
 Set the transceiver to 7.000 MHz, USB mode.
 Press the PTT button; adjust T2018, T2019, T2021,
and T2022 on the RF-IF-Unit for maximum de-
flection on the RF millivoltmeter.
 Disconnect the RF millivoltmeter and 50 Ohm
dummy load from J2002 on the RF-IF-Unit, then
re-connect the TMP plug to J2002.
ALIGNMENT-2
A / C DC
DJUST ONFIRM VOLTMETER
Adjust L2065 5.2 V ± 0.1 V
Confirm At least 0.5 V
Adjust L2066 5.2 V ± 0.1 V
Confirm At least 0.5 V
Adjust L2067 5.2 V ± 0.1 V
Confirm At least 0.7 V
Adjust L2068 5.2 V ± 0.1 V
Confirm At least 0.7 V
RX IF Circuit (SSB/CW)
 Set the following controls as indicated:
[IPO]: OFF
[ATT]: OFF
[RF GAIN] knob: Fully clockwise
 Connect the AF millivoltmeter and 4 Ohm
dummy load to the EXT SPKR jack.
 Connect the RF Signal Generator to the "ANT"
jack, and then set the output level to 0 dBμV at
the 51.995 MHz.
 Set the transceiver to 51.995 MHz in the CW
mode.
 Adjust T2020 on the RF-IF-Unit for maximum
deflection on the AF millivoltmeter.
RX IF Circuit (FM)
 Set the following controls as indicated:
[IPO]: OFF
[ATT]: OFF
[RF GAIN] knob: Fully clockwise
 Connect the SINAD meter and 4-Ohm dummy
load to the EXT SPKR jack.
 Connect the RF Signal Generator to the "ANT"
jack, and then set the RF Signal Generator to
51.995 MHz at the level of 0 dBμV, ± 3.0 kHz de-
viation with a 1 kHz audio tone.
 Set the transceiver to 51.995 MHz in the FM mode.
 Adjust T2021 and T2022 on the RF-IF-Unit for
maximum deflection on the SINAD meter.
FT-450 Series Technical Supplement