Vertex Standard VX-1700 Series Service Manual page 14

Alignment
PA Unit Alignment
P -D S I
RE RIVER ECTION
Connect the 50 Ohm Dummy Load to the ANT
jack.
Remove the shorting-plug from J2003 on the PA
Unit, then connect the DC Ammeter to J2003 (pin
1: "–" lead, pin 2: "+" lead).
Set VR2001 on the PA Unit fully counter-clock-
wise.
Tune the radio to 7.500 MHz, USB mode.
Key the transmitter (connect pin 3 of the MIC jack
to GND) with no microphone input, and adjust
VR2001 for 300 mA (± 30 mA) on the DC Amme-
ter.
Disconnect the DC Ammeter, and replace the
shorting-plug into J2003.
MIC J
TC
2001
TP
2018
14
C A
DLING URRENT LIGNMENT
P
ACK INOUT
PA U
D S
RIVER ECTION
Connect the 50 Ohm Dummy Load to the ANT
jack.
Remove the shorting-plug from J2004 on the PA
Unit, then connect the DC Ammeter to J2004 (pin
1: "–" lead, pin 2: "+" lead).
Set VR2002 on the PA Unit fully counter-clock-
wise.
Tune the radio to 7.500 MHz, USB mode.
Key the transmitter (connect pin 3 of the MIC jack
to GND) with no microphone input, and adjust
VR2002 for 300 mA (± 30 mA) on the DC Amme-
ter.
Disconnect the DC Ammeter, and replace the
shorting-plug into J2004.
A P
NIT LIGNMENT OINTS
I C A
DLING URRENT LIGNMENT
TP
2020
TP
2021
J
2004
VR
2003
VR
2002
J
2003
VR
2001