Alignment - Yaesu FT-23R Technical Supplement

The FT- 2 3R has
highly skilled technicians at the factory,
is d e s i g n e d so t h a t
should ever b e required .
unlikely event of

alignment

may be
replacement and service should be performed
only by an authorized Yaesu
the warranty policy may be voided.
The following test
alignment:
Rf Signal Generator:
calibrated output level at 150 MHz
Deviation Meter (linear detector)
1. Make sure the transceiver is off.
the hard or soft case,
the battery pack.
2. Remove the four screws affixing the battery
spring plate on the bottom of the transcei­
ver, and carefully remove the plate.
3. Remove the four
panel, and carefully remove the
4 . Remove the two screws affixing the front
and rear halves
separate the halves,
stress the interconnecting wires.
BOARD LAYOUT
FRONTEND UNIT
ANT SW UNIT
MOTHER BOARD
VCO UNIT
MIC AMP UNIT
PLL UNIT
ALI G NMENT
been carefully aligned
no f u r t h e r a l i g n m e n t
However, in
a component failure,
necessary. All component
representative,
equipment is required for
CASE DISASSEMBLY
Remove
if used, and remove
screws affixing the
panel.
of the case, and gently
using care not
Oscilloscope
by
and
AF Millivoltmeter
the
SINAD Meter
re­
Inline Wattmeter:
or
Regulated DC Power Supply:
adjustable from 4 to l 7V,
50-ohm Non-reactive Dummy Load:
frequency Counter: 0.2ppm accuracy at 150 MHz
AF Signal G enerator
DC Voltmeter: high impedance
top
to
S METER UNIT
REG UNIT
CNTL UNIT
1 - 1 1
150 MHz
2A
lOW at 150 MHz