Icom IC-M25 Service Manual

TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTION
SECTION 4 BATTERY PACK REPLACEMENT
SECTION 5 CIRCUIT DESCRIPITON
5-1 RECEIVER CIRCUITS ...................................................................................... 5-1
5-2 TRANSMITTER CIRCUITS ............................................................................... 5-2
5-3 FREQUENCY SYNTHESIZER CIRCUITS ....................................................... 5-3
5-4 VOLTAGE BLOCK DIAGRAM ........................................................................... 5-3
SECTION 6 ADJUSTMENT PROCEDURES
6-1 PREPARATION ................................................................................................. 6-1
6-2 FREQUENCY ADJUSTMENT .......................................................................... 6-2
6-3 RECEIVE ADJUSTMENT ................................................................................. 6-3
6-4 TRANSMIT ADJUSTMENT ............................................................................... 6-3
SECTION 7 PARTS LIST
SECTION 8 MECHANICAL PARTS
SECTION 9 BOARD LAYOUTS
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM

Icom IC-M25 Specifications

General

Battery type	BP-282
Battery life (max)	11 h
Battery low indication	Yes
Number of batteries supported	1
Purpose	Marine Radio Service
Operating frequency	156.025 - 157.425 MHz
Display type	LCD
USB connector type	Micro-USB B
Antenna connector type	FA-SC59V
Product color	Black, White
Waterproof up to	1 m
International Protection (IP) code	IPX7
Operating temperature (T-T)	-20 - 60 °C
Number of batteries included	1 pc(s)

Weight and Dimensions

Depth	30.5 mm
Width	56.6 mm
Height	134.2 mm
Weight	220 g