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EXC/RTX19 - USER & MAINTENANCE MANUAL - rev.1.5 - 05/16
Page 18
SERVICE MANUAL
THIS SECTION IS ONLY AIMED TO GENERAL EXPLANATION, REFERENCE AND
SERVICE PURPOSE BY SKILLED PERSONNEL. AS EXPLAINED IN THE PREVIOUS
SECTIONS, INTERNAL ADJUSTMENTS ARE NOT REQUIRED DURING NORMAL
OPERATION. TAMPERING WITH INTERNAL SETTINGS VOIDS THE WARRANTY,
MAY HARM THE APPARATUS AND JEOPARDIZE THE GUARANTEED PERFORMAN-
CE. COMPONENT VALUES SHOWN MAY ACTUALLY VARY FOR PRODUCTION
REQUIREMENTS.
DUE TO THE TECHNOLOGY USED, MOST MODULES AND ESPECIALLY THOSE
IN SMT ARE NOT INTENDED TO BE REPAIRED IN CASE OF FAILURE AND MUST
BE REPLACED WITH NEW ONES.
INTERNAL TRANSMITTER DESCRIPTION
The EXC19 transmitter comprises 7 internal modules, as can be seen in the drawing “General
view” and in the "General wiring diagram", both comprised in this manual. Some of these
modules vary according to the preset frequency range.
-The CPU controller and display board
-The LF and RF control main-board
-The stereo-encoder module (optional)
-The synthesised oscillator module,
1300 ÷ 2600 MHz version
-The RF power amplifier, 1300 ÷ 2600 MHz
-The regulated power supply
-The auxiliary regulator and battery charger board
For the detailed description of each module on the following pages, refer to the corresponding
electrical diagram, in the relevant section of the manual.
WARNING !
I