ICOM IC-R75 Manuale Utente

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Follow the case and cover opening procedures shown 
here when you want to install an optional unit or 
adjust an internal unit, etc.

  

 DISCONNECT the DC power cable 

from the receiver before performing any work on 
the receiver. Otherwise, there is danger of electric 
shock and/or equipment damage.

q

  Remove the 2 screws from the left side of the 

receiver to remove an optional carrying handle, if 
necessary.

w

  Remove the 4 screws from the top of the receiver 

and 4 screws from the sides, then lift up the top 
cover.

e

  Remove  the  2  screws  from  the  bottom  of  the 

receiver, slide the cover backward, then remove 
the bottom cover.

The UT-102 announces the received frequency, mode, 
S-meter level and current time in a clear, electronically-
generated voice, in English (or Japanese).
➥

  Push  [LOCK]  for  2  sec.  to  announce  the 

frequency, etc.

q

  Remove the top cover as shown above.

w

  Remove the protective paper attached to the 

bottom of the UT-102 to expose the adhesive strip.

e

  Plug UT-102 into J1271 on the MAIN unit as 

shown at right.

r

  Return the top cover to its original position.

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By installing the CR-282, the total frequency stability 
of the receiver will be improved.

q

  Remove the top cover as shown in the diagram 

above.

w

  Remove 5 screws from the PLL unit, disconnect 

P1 from J491 (MAIN unit), then remove the PLL 
unit. 

e

  Remove the supplied internal crystal and replace 

with the CR-282.

r

  Adjust the reference frequency at L2 using a 

frequency counter.

t

  Return the PLL unit and top cover to their original 

positions.

PLL unit

MAIN unit

CR-282

Internal

crystal

Connect a frequency counter 

here and adjust the frequency 

to 60.00000 MHz.

L2

PLL unit

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