Icom IC-24 ET Transceiver
Manufacturer:
Model:
IC-24 ET
Date:
1990
Category:
Group:
Description:
DUAL BAND FM TRANSCEIVER
Service Manual
Manual type:
Service Manual
Pages:
51
Size:
13.86 Mbytes (14528196 Bytes)
Language:
english
Revision:
Manual ID:
A-5082Y-S
Date:
1990
Quality:
Scanned document, all readable.
Upload date:
06 January 2016
MD5:
926a6823cd6352b9b5f91aa59235abd7
Downloads:
428
Information
This service manual describes the latest service information for the IC-24AT.ET DUAL BAND FM Transceiver at the time of publication. SECTION 1 SPECIFICATIONS ... 1-1 SECTION 2 INSIDE VIEWS ... 2-1 SECTION 3 CIRCUIT DESCRIPTION ... 3-1-6 3-1 VHF Receiver CIRCUITS ... 3-1 3-2 UHF Receiver CIRCUITS ... 3-2 3-3 VHF Transmitter CIRCUITS ... 3-2 3-4 UHF Transmitter CIRCUITS ... 3-3 3-5 PLL CIRCUITS ... 3-3 3-6 LOGIC CIRCUITS ... 3-4 3-7 Power Supply CIRCUITS ... 3-6 SECTION 4 MECHANICAL PARTS AND DISASSEMBLY ... 4-1-2 4-1 FRONT PANEL ... 4-1 4-2 REAR PANEL ... 4-2 4-3 ACCESSORIES ... 4-2 SECTION 5 PARTS LIST ... 5-1-9 SECTION 6 ADJUSTMENT PROCEDURES ... 6-1-5 6-1 PREPARATION BEFORE SERVICING ... 6-1 6-2 PLL ADJUSTMENT ... 6-2 6-3 Receiver ADJUSTMENT ... 6-2 6-4 Transmitter ADJUSTMENT ... 6-4 SECTION 7 BOARD LAYOUTS ... 7-1-13 7-1 KEYBOARD AND PTT UNIT ... 7-1 7-2 LOGIC UNIT ... 7-2 7-3 INITIAL MATRICES ... 7-4 7-4 ADENCA UNIT ... 7-4 7-5 VR, UHF SW AND PRT UNITS ... 7-5 7-6 MAIN UNIT ... 7-6 7-7 AF, MIC AND REG UNITS ... 7-8 7-8 APC AND IO UNITS ... 7-9 7-9 DET AND UHF YGR UNITS ... 7-10 7-10 VHF RF, VHF COL, UHF RF AND UHF COL UNITS ... 7-11 7-11 VHF PLL, UHF PLL AND UHF VCO UNITS ... 7-12 7-12 LPF AND HPF UNITS ... 7-13 SECTION 8 BLOCK DIAGRAM ... 8-1 SECTION 9 VOLTAGE DIAGRAM 9-1-2

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