Icom IC-F7000 - page 66

9-3-5 DRIVER BOARD

• TOP VIEW

9 - 13

GND

VARO

VARI

to PA unit J6411

9-3-6 VARISTOR-1 BOARD

Contents

Main INTRODUCTION DANGER ORDERING PARTS REPAIR NOTES TABLE OF CONTENTS SECTION 1 SPECIFICATIONS IC-F7000 TRANSMITTER RECEIVER MODE RC-26 REMOTE CONTROLLER SP-25 EXTERNAL SPEAKER 1 - 3 231 (9 3 32) 155 (6 3 32) 5.4 ( ) (d) 5.4 (7 32)5.4 (7 32) 1 - 4 SECTION 2 INSIDE VIEWS 2 - 1 RC-26 HM-146 (MIC UNIT) IC-F7000 (BOTTOM VIEW) 2 - 2 IC-F7000 (TOP VIEW) SECTION 3 ABOUT EXTERNAL REFERENCE SIGNAL INPUT Page SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS RECEIVER CONSTRUCTION UNIT 4-1-1 RF FILTER CIRCUIT (PLL AND MAIN UNITS) UNIT 4-1-6 AGC CIRCUIT (DSP AND MAIN UNITS) AGC CIRCUIT 4-1-7 AF AMPLIFIER CIRCUIT (DSP AND MAIN UNITS) DSP CIRCUIT 4-2 TRANSMITTER CIRCUITS 4-2-1 MICROPHONE AMPLIFIER CIRCUIT (RC-26, MAIN AND DSP UNITS) TRANSMIT CONSTRUCTION 4-2-2 DSP TRANSMITTER CIRCUIT (DSP UNIT) 4-2-3 SPEECH COMPRESSOR CIRCUIT (DSP UNIT) 4-2-5 RF CIRCUIT (MAIN, PA, PLL UNITS AND DRI- VER BOARD) RF FILTER CIRCUIT 4-2-6 ALC CIRCUIT (PLL AND MAIN UNITS) 4-2-7 APC CIRCUIT (PLL AND MAIN UNITS) ALC CIRCUIT 4-3 PLL CIRCUITS 4-3-1 GENERAL 4-3-2 1ST LO PLL (PLL UNIT) 4-3-3 2ND LO AND REFERENCE OSCILLATOR CIRCUITS (PLL UNIT) 4-3-3 3RD LO CIRCUIT (PLL UNIT) 4-4 FRONT UNIT (RC-26) 4-4-1 LCD CIRCUIT (DISPLAY AND CONNECT BOARDS) 4-4-2 MICROPHONE CIRCUIT (DISPLAY BOARD) 4-4-3 KEYS BACK LIGHTS CIRCUIT (DISPLAY BOARD) 4-4-4 RESET CIRCUIT (DISPLAY BOARD) 4-5 POWER SUPPLY CIRCUITS 4-5-1 PA UNIT VOLTAGE LINE 4-5-2 DISPLAY BOARD (RC-26) VOLTAGE LINE 4-5-4 MAIN UNIT VOLTAGE LINE MAIN CPU (MAIN UNIT; IC3303)continued 4-6 PORT ALLOCATIONS 4-6-1 MAIN CPU (MAIN UNIT; IC3303) 4-6-3 OUTPUT EXPANDER IC FOR THE PLL UNIT (MAIN UNIT; IC3602) 4-6-5 OUTPUT EXPANDER IC (MAIN UNIT; IC3603) 4-6-4 OUTPUT EXPANDER IC FOR BANDPASS FIL- TERS (MAIN UNIT; IC3604) 4-6-6 D/A CONVERTER IC (MAIN UNIT; IC3606) 4-6-7 FRONT CPU PORT ALLOCATIONS (RC-26, DISPLAY BOARD; IC8201) 5-1 PREPARATION REQUIRED TEST EQUIPMENT SECTION 5 ADJUSTMENT PROCEDURES CAUTION! iF7000 RC-26 CONNECTION ENTERING THE ADJUSTMENT MODE 5-2 PLL UNIT ADJUSTMENT Page 5-3 PA AND FILTER UNITS ADJUSTMENT Page 5-4 RECEIVER ADJUSTMENTS Page 5-5 TRANSMITTER ADJUSTMENTS TRANSMITTER ADJUSTMENTSContinued 6 - 1 SECTION 6 PARTS LIST 6-1 IC-F7000 [MAIN BOARD] 6 - 2 6 - 3 6 - 4 6 - 5 [MAIN UNIT][MAIN UNIT] 6 - 6 [MAIN UNIT][MAIN UNIT] 6 - 7 [PLL UNIT][MAIN UNIT] [PLL UNIT] 6 - 8 [PLL UNIT][PLL UNIT] 6 - 9 [PLL UNIT][PLL UNIT] 6 - 10 [PA UNIT][PLL UNIT] 6 - 11 [PA UNIT][PA UNIT] [DSP UNIT] 6 - 12 [DSP BOARD][DSP BOARD] 6 - 13 [DRIVER BOARD][DSP BOARD] 6 - 14 [VARISTOR-1 BOARD] [VARISTOR-2 BOARD] [FRONT UNIT] 6 - 15 6-2 RC-26 [DISPLAY BOARD] [DISPLAY BOARD] [REAR BOARD][DISPLAY BOARD] [CONNECT BOARD] 6 - 16 6-3 HM-146 6 - 17 SECTION 7 MECHANICAL PARTS AND DISASSEMBLY [FRONT PARTS] 7-3 IC-F7000 7-2 HM-146 7-1 RC-26 RC-26 [ACCESSRIES] IC-F7000 [PLL UNIT] [DSP BOARD] RC-26 C O to RC-26 DISPLAY board J8701 HM-146 IC-F7000 Unit abbreviations (C): CHASSIS PARTS (M): MIC UNIT to RC-26 FRONT parts W8002 8 - 1 SECTION 8 SEMI-CONDUCTOR INFORMATION (Symbol: 103) (Symbol: 20 B2) (Symbol: SC) (Symbol: 3J) RB706F-40 T106 RD10M B3 RD20E B2 SB20 03P UM9957F/TR (Symbol: 7T) (Symbol: 5C) SECTION 9 BOARD LAYOUTS 9-1 HM-146 TOP VIEW 9-2 RC-26 9-2-1 CONNECT BOARD 9-2-2 REAR BOARD BOTTOM VIEW (CONNECT BOARD) BOTTOM VIEW (MIC UNIT) BOTTOM VIEW (REAR BOARD) Page BOTTOM VIEW (DISPLAY BOARD) 21 9 - 4 1 85 9-3 IC-F7000 9-3-1 DSP BOARD 9 - 6 BOTTOM VIEW (DSP BOARD) from PLL unit J7321 from/to PA 9 - 7 M2Lo W5201 9-3-2 MAIN UNIT Page to CHASSIS W4501 GND HV13V from PLL unit J7001 9 - 9 FLIN W7001 9-3-3 PA UNIT Page to PA unit J6401 FLIN W7001 to MAIN unit J601 M1Lo W4503 from CHASSIS unit J4501 ANT 9-3-4 PLL UNIT Page Page BOTTOM VIEW (DRIVER BOARD) 9-3-7 VARISTOR-2 BOARD 9 - 14 SECTION 10 BLOCK DIAGRAM Bus LINE - CPU PLL UNIT SECTION 11 WIRING DIAGRAM PLL UNIT MAIN UNIT CONNECT BOARD DISPLAY BOARD MIC UNIT SP-25 SECTION 12 VOLTAGE DIAGRAMS REAR BOARD (RC-26) 12-1 RC-26 and HM-146 DISPLAY BOARD (RC-26)MIC UNIT (HM-146) CONNECT BOARD (RC-26) 12-2 IC-F7000 UNIT (2) 12-2-1 MAIN UNIT (1) MAIN UNIT (1) 12 - 3 12-2-2 MAIN UNIT (2) MAIN UNIT (2) UNIT (1) UNIT (3) VOLTAGE LINE 12-2-3 MAIN UNIT (3) MAIN UNIT (3) UNIT (2) Explanatory notes 12 - 5 12-2-4 PA UNIT VARISTOR-2 BOARD VARISTOR-1 BOARD DRIVER BOARD 12 - 6 12-2-5 PLL UNIT (1) PLL UNIT (1) PLL UNIT (2) 12 - 7 12-2-6 PLL UNIT (2) PLL UNIT (1) PLL UNIT (2) 12 - 8 12-2-7 DSP BOARD -2V 6V 4 XP4312