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ALI G NMENT
The FT- 2 3R has been carefully aligned by
highly skilled technicians at the factory, and
is designed so that no further alignment
should ever be required .
However,
in the
unlikely event of a component failure,
re
alignment may be necessary.
All component
replacement and service should be performed
only by an authorized Yaesu representative,
or
the warranty policy may be voided.
The following test equipment is required for
alignment:
Rf Signal Generator:
calibrated output level at 150 MHz
Deviation Meter (linear detector)
Oscilloscope
AF Millivoltmeter
SINAD Meter
Inline Wattmeter: 150 MHz
Regulated DC Power Supply:
adjustable from 4 to l 7V, 2A
50-ohm Non-reactive Dummy Load: lOW at 150 MHz
frequency Counter: 0.2ppm accuracy at 150 MHz
AF Signal Generator
DC Voltmeter: high impedance
CASE DISASSEMBLY
1. Make sure the transceiver is off.
Remove
the hard or soft case, if used, and remove
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 screws affixing the top
panel,
and carefully remove the panel.
4 . Remove the two screws affixing the front
and rear halves of the case,
and gently
separate the halves,
using care not to
stress the interconnecting wires.
BOARD LAYOUT
FRONTEND UNIT
UNIT
ANT SW UNIT
MOTHER BOARD
VCO UNIT
MIC AMP UNIT
PLL UNIT
S METER UNIT
REG UNIT
CNTL UNIT
1 - 1 1
Содержание FT-23R MKII
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