Yaesu FT-227R Memorizer, Instruction Manual

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MAINTEN AN C E
&
ALI GN MEN T
GENERAL
The rriodel FT - 2 27R tran s c e ive r ha s b e e n c a r e fully ali gned and te s ted
at the fa ctory prio r to s hipment . The r eliability of the s olid - s tate
devi c e s u s ed in the FT - 2 2 7R should provide y e a r s of troubl e fr e e
s e rvic e if the tran s ce ive r i s not abu s ed and no rmal, routine main­
tenanc e i s c a r ried out .
THE FOLLOWING PRE C AU TION S SHOULD B E O BSERVED TO PRE ­
VEN T D AM AGE TO THE TRANS C E IVER:
(1 ) Do no t exc e ed 14 Volts D C , at the POWER r e c epta c l e .
When op e r ating mob il e, che ck the batte ry volta g e und e r the .load
(tr an smi tte r "keyed" in FM mode ) with the engine running fa st
enough s o the ammeter show s a "chang e ' .' In additi on, do no t
ope rate the F T - 2 2 7R if the supply voltage i s b elow 12 Volts DC .
(2 ) Avoid di r e c t expo sur e to s unshine o r wate r.
Figure 10
TOP
VIEW
MAIN UNIT
TRANSMITTER
SECTION
MAIN UNIT
RECEIVER
SECTION
RED WIRE MUST BE CUT
WHEN TONE SQUELCH UNIT
IS INSTALLED.
TONE SQUELCH UNIT
(WHEN INSTALLED)
TONE BURST
SECTION
- ·21 -
Figure
Tl
BOTTOM VIEW
·
DISPLAY UNIT
CHANNEL SELECTOR
PHOTO INTER RUPTER
UNIT
P/J:11,,
P/J:io�
P/J:.0:1
PLL LOCAL
SECTION
MODULATOR
)
SECTION
CONVERTER
PLL SECTION