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SERVICE

MANUAL

UHF TRUNKED RADIO

F43TR

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Summary of Contents for IC-F43TR

Page 1: ...SERVICE MANUAL UHF TRUNKED RADIO F43TR...

Page 2: ...ce 1 Make sure a problem is internal before disassembling the transceiver 2 DO NOT open the transceiver until the transceiver is disconnected from its power source 3 DO NOT force any of the variable c...

Page 3: ...TS 4 4 4 5 OTHER CIRCUITS 4 5 4 6 PORT ALLOCATIONS 4 5 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 SOFTWARE ADJUSTMENTS 5 4 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY...

Page 4: ...distortion 3 typical AF 1kHz 40 deviation Hum and Noise 40 dB min 46 dB typical for Wide 34 dB min 40 dB typical for Narrow Limiting charact of modulator 60 100 of maximum deviation Microphone impeda...

Page 5: ...lator Q25 2SA1577 IF IC IC9 TA31136FN AF amplifier IC15 TA7568F APC amplifier IC16 TA75S01F IF amplifier Q7 2SC4215 TX RX switch D16 D17 MA77 5 Regulator IC17 NJM2870 T5 Regulator Q24 2SA1577 D A conv...

Page 6: ...ssis unit in the direction of the arrow 5 Unplug the connector F from the chassis unit REMOVING THE PA UNIT 1 Unscrew 3 screws M 2 Unsolder 4 points N and take off the PA unit in the direc tion of the...

Page 7: ...the RX VCO circuit via the low pass filter L46 C396 C397 at the 1st mixer circuit Q6 to produce a 46 35 MHz 1st IF signal The 1st IF signal is passed through a monolithic filter FI1 in order to obtain...

Page 8: ...CTCSS or DTCS When tone squelch is in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the AF signals even when noise squelch is open A portion of t...

Page 9: ...ed by the APC circuit 4 2 4 APC CIRCUIT PA AND MAIN UNITS The APC circuit protects the drive and power amplifiers from excessive current drive and selects output power of HIGH or LOW The power detecto...

Page 10: ...as the comparison signal LINE VCC 5V S5V R5V T5V DESCRIPTION The voltage from the connected battery pack Common 5 V converted from the VCC line at the 5 regulator circuit IC7 The output voltage is sup...

Page 11: ...n to suppress unwanted signals The filtered signals pass through or bypass scrambler section and are then applied to the expander circuit to expand AF signals The signals are applied to the base band...

Page 12: ...lied to the buffer amplifier IC24 pin3 Outputs strobe signals to the PLL IC IC21 pin 16 Outputs the FM PM modulation switching signal to the FM PM switch IC13 pin 5 High PM is selected I O port for th...

Page 13: ...ose original mem ory data at the same time STARTING SOFTWARE ADJUSTMENT q Connect IC F43TR and PC with the OPC 478 and JIG CABLE w Turn the transceiver power ON e Boot up Windows and click the program...

Page 14: ...nection state Reload adjustment data Receive sensitivity measurement Connected DC voltage measurement PLL lock voltage measurement Operating channel select RF output power FM deviation balance Narrow...

Page 15: ...oltmeter to the antenna connector Attenuator 40 dB or 50 dB RF power meter 0 1 10 W 50 Frequency counter Standard signal generator 0 1 V to 32 mV 127 dBm to 17 dBm CAUTION DO NOT transmit while to SSG...

Page 16: ...g Operating freq CH4 Transmitting Operating freq CH5 No audio applied to the MIC input Transmitting PLL LOCK VOLTAGE LV RX LVA LV TX LVA REFERENCE FREQUENCY REF OUTPUT POWER Power Hi Power Low MODULAT...

Page 17: ...vel 4 5 V 94 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Set an SSG as Level 0 25 V 119 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Operating freq CH6 Connect an SSG to the antenna con necto...

Page 18: ...B L22 6200007900 S COIL ELJRF 22NJF2 22 B L25 6200008490 S COIL 0 30 0 9 3TR 7 5N B L27 6200004950 S COIL NL 252018T 1R8J T L28 6200002710 S COIL ELJFC 1R8K F T L31 6200007720 S COIL LQW2BHN33NJ01L B...

Page 19: ...GEJ 104 X 100 k B M Mounted side T Mounted on the Top side B Mounted on the Bottom side S Surface mount 6 2 REF ORDER DESCRIPTION M NO NO H High band L Low band MAIN UNIT R242 7030005090 S RESISTOR ER...

Page 20: ...he Bottom side S Surface mount C122 4030017580 S CERAMIC ECJ0EC1H060C L B 4030017600 S CERAMIC ECJ0EC1H080C H B C123 4030017390 S CERAMIC ECJ0EC1H180J L B 4030017640 S CERAMIC ECJ0EC1H150J H B C124 40...

Page 21: ...E102K T C376 4030017460 S CERAMIC ECJ0EB1E102K T C377 4030017460 S CERAMIC ECJ0EB1E102K B C378 4030017460 S CERAMIC ECJ0EB1E102K B C379 4030017460 S CERAMIC ECJ0EB1E102K T C380 4030017330 S CERAMIC EC...

Page 22: ...26 4030017460 S CERAMIC ECJ0EB1E102K T C727 4030017460 S CERAMIC ECJ0EB1E102K T C729 4030017360 S CERAMIC ECJ0EC1H030B B C731 4030017360 S CERAMIC ECJ0EC1H030B T C732 4030017460 S CERAMIC ECJ0EB1E102K...

Page 23: ...610011920 Knob N 319 1 MP31 8810010160 Screw M3 x 5 SUS ZK 1 MP32 8930063050 2721 plate 1 1 MP33 8930046020 1123 sheet A 1 1 MP34 8930056540 Spring AH 2 MP35 8830001700 VR nut Q 1 MP36 8830001690 VR n...

Page 24: ...8 C MP37 C MP46 C MP39 C MP42 C MP4 M MP7 M DS3 M MP3 M MP22 C MP28 C S27 M R315 M MP28 C PA Unit FUSE Unit MP28 C ANT Unit MP1 C J1 C MP36 C MP35 C MP17 C MP8 C MP31 C MP13 C MP14 C MP16 C MP27 C MP2...

Page 25: ...24 E C B 2SB1132 Q Symbol BAQ B E C TPC6103 Symbol S3C 1 2 3 6 5 4 B C E 2SC4116 BL Symbol LL E C B 2SC3356 Symbol R22 E C B 2SC4215 O Symbol QO E C B 2SK880 Y Symbol XY E C B S D G E1 E2 B2 C1 B1 C2...

Page 26: ...C69 C71 R40 C328 C329 C375 R229 R225 C330 C402 C376 C73 R228 R116 R17 R19 C186 R172 R31 R98 C51 R32 R175 C176 C24 R360 R303 C368 C42 R130 R173 C165 C162 C164 C166 C163 C115 C137 C141 C413 R100 R111 R1...

Page 27: ...118 R239 R119 R107 R513 R344 R256 R270 C350 C349 C359 R259 C348 C411 C65 C409 R183 R182 R122 R357 R282 R283 R358 R243 C414 R72 R514 C223 C221 C26 C26 C336 R245 R289 R240 R242 R181 R185 C225 C371 R184...

Page 28: ...63 C762 R712 C731 C735 L708 C760 C759 C733 C761 C758 C734 C718 R706 R704 MP1 L703 D705 C742 D701 9 3 9 2 PA UNIT TOP VIEW L801 ANT GND TX B6140B C805 J1 CHASSIS unit C804 L802 C803 C806 R801 9 3 ANT U...

Page 29: ...2 B6107B C750 C751 C753 D704 L701 C707 J702 R703 C754 D703 Q701 R728 R708 J701 P_DET GND VCC C720 C756 C722 C715 C716 C719 C724 L706 F701 C757 C702 C703 L712 TX GND 1 3 T5V APC TX J701 to the MAIN uni...

Page 30: ...RD01MUS1 ATT GATE CTRL Q4 2SK1829 AMP IC19 NJM12904V MC1 PTT PTT DET Q43 UN9112J AF VOL LPF IC23 NJM12904 X2 CR 781 15 3 MHz TCXO T5 REG Q24 2SA1577 REG R5 Q25 2SA1577 S5 REG Q26 2SB1132 Q27 XP6501 F...

Page 31: ...S21 S22 S25 S26 S23 S24 S7 S9 S10 S11 S13 S14 S15 S17 S18 S19 IC10 24LC64T I SN 4 3 2 1 5 6 7 8 VSS A2 A1 A0 SDA SCL WP VCC R292 100 k R293 10 k C354 0 1 R205 100 k R204 100 k R203 220 k J5 AXN330C038...

Page 32: ...70 10 C107 0 001 R76 100 C109 0 001 R77 100 C110 470 P C139 0 1 R78 100 k L22 22 nH C105 0 001 R75 150 k L41 33 nH C103 2 P C205 5 P R5V C111 47 P R80 10 k EP1 C104 0 001 R87 390 C113 0 75 P C120 470...

Page 33: ...P R728 ERJ2GE JPW C719 0 01 C716 0 001 C715 0 001 C756 0 001 L705 14 nH R708 220 C723 0 001 R710 4 7 k C734 470 P C758 0 1 C718 0 001 R706 4 7 k C713 30 P C712 12 P C755 15 P C711 5 P R702 2 7 k C705...

Page 34: ......

Page 35: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14016IZ C1 2004 Icom Inc...

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