Yaesu FT-23R MKII, Техническое дополнение

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A L I G N M E N T
The FT-23R has been 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, realignment
may be necessary. All component replacement and ser­
vice should
be
performed only by· an authorized Yaesu
representative, or the warranty policy may be voided.
Required Test Equipment
•
RF Signal Generator with calibrated output level at
1 50 MHz
•
Spectrum Analyzer
•
RF Sampling Coupler
•
Oscilloscope
•
AF Millivoltmeter
•
Deviation Meter
•
SINAD Meter
•
Inline Wattmeter with 5% accuracy at 150 MHz
•
Regulated DC Power Supply adjustable from 10 to
1 5V, 2A
•
50-Q Non-reactive Dummy Load: l OW at 1 50 MHz
•
Frequency Counter: ±0.2ppm accuracy at 1 50 MHz
•
AF Signal Generator
•
DC Voltmeter: high impedance
•
External Loudspeaker or 8-Q load resistor.
Case Disassembly
•
Make sure the transceiver is off. Remove the hard or
soft case, if used, and remove the battery pack.
•
Remove the four screws affixing the battery spring
plate on the bottom of the transceiver, and carefully
remove the plate.
•
Pull off the knobs, and remove the four screws affix­
ing the top panel. Remove the panel and rubber
gasket under it.
•
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 Locations
I F U N I T
A N T
SW
U N I T
M OT H E R BOA R D
V C O U N IT
P L L U N I T
2 - 1 3
C N T L U N IT
R E G U N IT
M I C A M P U N IT
D U M M Y U NIT