SERVICE
MANUAL
UHF FM TRANSCEIVERS
Page 1: ...SERVICE MANUAL UHF FM TRANSCEIVERS...
Page 2: ...4GT MAIN UNIT 1 pieces 8810009510 Screw BT M2 x 4 NI ZU IC F4GS Chassis 10 pieces Addresses are provided on the inside back cover for your convenience 1 Make sure a problem is internal before disassem...
Page 3: ...WER SUPPLY CIRCUITS 4 3 4 5 CPU PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 4 5 3 SOFTWARE ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PA...
Page 4: ...ion Maximum frequency deviation 2 5 kHz Spurious emissions 73 dBc typical Adjacent channel power 60 dB typical Transmitter audio distortion Less than 3 at 1 kHz 40 deviation Limitting charact of modul...
Page 5: ...030000500 S RESISTOR MCR10EZHJ 10 k 1 R6 7030000190 S RESISTOR MCR10EZHJ 27 270 1 R7 7030001740 S RESISTOR MCR10EZHJ 2 k 1 R8 7030001740 S RESISTOR MCR10EZHJ 2 k 1 R9 7030000590 S RESISTOR MCR10EZHJ 5...
Page 6: ...6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan S 13610IZ CD 2000 Icom Inc...
