Service manual

19VX-450 Series VHF Band Service Manual
Alignment
Alignment Preparation & Precautions
A 50-Ohm RF Dummy Load and in-line wattmeter
must be connected to the main antenna jack in all
procedures that call for transmission, except where
specified otherwise. Correct alignment is not possi-
ble with an antenna.
After completing one step, read the following step
to determine whether the same test equipment will
be required. If not, remove the test equipment (ex-
cept dummy load and wattmeter, if connected) be-
fore proceeding.
Correct alignment requires that the ambient temper-
ature be the same as that of the transceiver and test
equipment, and that this temperature be held con-
stant between 68 and 86 °F (20 ~ 30 °C). When the
transceiver is brought into the shop from hot or cold
air, it should be allowed time to come to room tem-
perature before alignment.
Whenever possible, alignments should be made with
oscillator shields and circuit boards firmly affixed in
place. Also, the test equipment must be thoroughly
warmed up before beginning.
Note: Signal levels in dB referred to in the alignment
procedure are based on 0 dBμ EMF = 1 μV.
Test Setup
Setup the test equipment as shown for transceiver
alignment, apply 7.5 V DC power to the transceiver.
Refer to the drawings above for Alignment Points.
The Alignment Tool Outline
Installation the tool
 Install the CE115 (PC Programming Software) to
your PC.
 “Alignment“ function in the “Radio“ menu of
CE115.
Action of the switches
When the transceiver is in the “Alignment mode,“ the
action of the PTT and all PF KEYS are ignored. All of
the action is controlled by the PC.
CLONE GND
SP MIC
SP
MIC
CLONE
GND
AF TEST ADAPTER SCHEMATIC
Transceiver
Inline
Wattmeter
Power Supply
7.5 VDC
Deviation Meter
Frequency
Counter
RF
Signal Generator
50-ohm
Dummy Load
MIC/SP
COM Port
(
for CT-42
)
or
USB Port
(
for FIF10A + CT-106
)
ANT
RF Sampling
Coupler
BATTERY
TERMINAL
CT-42
or
FIF10A + CT-106
Antenna Connector (CN-2A)
Caution!
Please never turn off a power supply while
alignment. If the power supply turn off while
alignment, the setting data is failed.
BATTERY TERMINAL POLARITY