Icom IC-718 Instruction Manual - Page 51

9 INSTALLATION AND CONNECTIONS s CR-338 HIGH STABILITY CRYSTAL UNIT By installing the CR-338, the total frequency stability of the receiver will be improved. q Remove the bottom cover as shown in the diagram before. w Disconnect W2 from J4401 (MAIN unit) and W3 from J4201 (MAIN unit). e Remove 9 screws from the PLL unit, disconnect P4 from J201 (MAIN unit) and P2 from J401 (MAIN unit), then remove the PLL unit. r Remove the supplied internal crystal and replace with the CR-338. t Return the PLL unit, plugs and flat cables to their original positions. y Adjust the reference frequency at C16 using a frequency counter if desired. • Connect the frequency counter to P. 2 (PLL unit). u Return the bottom cover to its original position. CR-338 Internal crystal PLL unit C 16 W 2 W 3 J 4201 J 4401 P 4 J 201 J 401 MAIN unit P 2; Frequency check point (Connect a frequency counter and adjust the frequency to 64.00000 MHz with C 16.) PLL unit Solder 4 leads s UT-102 VOICE SYNTHESIZER UNIT 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 1 sec. to announce the frequency, etc. q Remove the bottom cover as shown above. w Remove the protective paper attached to the bot- tom of the UT-102 to expose the adhesive strip. e Plug UT-102 into J2501 on the MAIN unit as shown at right. r Return the bottom cover to its original position. 49