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ABELL A-82 UHF Service Manual

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Schematic diagram

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Содержание A-82

Страница 1: ... Service Manual 0 ABELL INDUSTRIES CO LTD A 82 SERVICE MANUAL V 1 0 Web www abell com cn Email sales abell com cn TEL 86 755 26095567 FAX 86 755 26404666 ADD 2F 14BLDG Zhongxing Industries city NanShan Shenzhen China ...

Страница 2: ...82 UHF SERVICE MANUAL V1 0 Contents GENERAL 2 REALIGNMENT 3 DISASSEMBLY FOR REPAIR 8 CIRCUIT DESCRIPTION 10 Components LIST 11 EXPLODED VIEW 38 PACKING 39 ADJUSTMENT 40 ELECTRONIC CIRCUIT DESCRIPTION 46 SCHEMATIC DIAGRAM 47 PC BOARD VIEWS 55 SPECIFICATIONS 57 ...

Страница 3: ...n number should be included This applies to all parts components kits or chassis If the part number is not known include the chassis or kit number of which it is a part and a sufficient description of the required component for proper identification PERSONAL SAFETY The following precautions are recommended for personal safety DO NOT transmit until all RF connectors are verified secure and any open...

Страница 4: ...s by means of the FPU through the RS 232C port Manufacture Mode Use this mode to realign the various settings through the RS 232C port during manufacture work 2 How to enter each mode MODE PROCEDURE User Mode Power ON PC Mode Connect to the IBM PC compatible machine and controlled by the FPU 3 Parts Introduction Chart 1 User Mode PC Mode Manufacture Mode ...

Страница 5: ...Scan Battery announcement choose none to not use this key Note If the long key of K1 is set to be Monitor momentary or Squelch off momentary the short key of K1 can not set to be the above two function Channel selector Rotate to select channels 1 16 LED indicator Lights red while transmitting green while receiving a signal Power switch Volume control Turn clockwise to switch the transceiver ON Tur...

Страница 6: ... channels need to listen to in priority during the scan process Look back time Set the time to ruturn to the priority channel for scan Rx dwell time Set the stay time caused by receiving signal Tx dwell time Set the stay time caused by transmiting signal Battery Announce Report the battery volumn by announcement DTMF PTT ID Rate Set the transmitting rate of DTMF code Primacy Digit Code Adding time...

Страница 7: ...ble 2 Operate A 82 prgramming software 3 Set the communication interface 4 Operate the programming to the radio 5 When data is transmitting from the transceiver the red LED lights When data is receiving by the transceiver the green LED lights Notes The data stored in the personal computer must match the Model Name when it is written into the EEPROM Run the software and connect the transceiver with...

Страница 8: ...ming software description By installing programming software of A 82 users are allowed to program the transceiver with programming interface cable Programming with PC If data is transferred to the transceiver from a personal computer with software provide by ABELL the destination data basic radio information for each set can be modified Normally it is not necessary to modify the destination data b...

Страница 9: ... 3 Expand the right and left sides of the bottom of the case assembly lift the chassis and remove it form the case assembly Separating the chassis from the unit 1 Remove the 12 screws 2 Remove the solder from the antenna terminal using a soldering iron then lift the unit off 3 Remove two waterproof ring 4 Remove the two antenna connecter 5 Remove the main board ...

Страница 10: ...ABELL A 82 UHF Service Manual 9 Chart 3 Note Ensure all these points being soldered well after the main board is assemblied to the chassis after repairing ...

Страница 11: ...ignal from the antenna is applied to an RF amplifier Q301 after passing through a transmit receive switch circuit D301 and D302 are off and a band pass LC filter After the signal is amplified the signal is filtered through a band pass filter to eliminate unwanted signals before it is passed to the first mixer Q300 Because of the LC band pass filter s insufficient bandwidth control the capacitance ...

Страница 12: ...ss filter IC401 A IC401 B and low pass filter IC401 D and though R436 C430 remove embitter The signal passes through AF volume control circuit and enters the audio power amplifier IC2 drives the speaker 5 Squelch Part of the AF signal from IC300 enters IC300 again and the noise is amplified and rectified by a filter and an amplifier to produce a DC voltage corresponding to the noise level The DC s...

Страница 13: ... is buffer amplified by Q105 then divided in IC100 by a dual module programmable counter The divided signal is compared in phase with the 5 or 6 25 kHz reference signal in the phase comparator in IC100 The output signal from the phase comparator is filtered through a low pass filter and though the VCO to control the oscillator frequency See the chart 7 2 VCO The operating frequency is generated by...

Страница 14: ...e microphone is amplified by IC400 1 2 passes through a preemphasis circuit and amplified by the other IC400 1 2 to perform IDC operation The signal then passes through a low pass filter splatter filter Q400 and Q401 and cuts the frequencies higher than 3kHz The resulting signal goes to the VCO through the VCO modulation terminal for direct FM modulation The audio frequency swing is controlled by ...

Страница 15: ...into audio power AMP IC2 for driving the speaker DTMF frequency deviation is adjusted by the output of CPU IC1 VR400 MIC Q403 SW MUTR IC1 QT DQT AMP MIC IC400 1 2 PREEMPHASIS IDC IC400 1 2 SPLATTER FILTER LPF Q400 Q401 DEV MAX D104 Q101 VCO X100 IC100 REEFERENCE OSC TCXO 图6 发发音音QT DQT LPF R38 R35 C6 C9 DTMF 5 VCO and RF amplifier The transmit signal obtained from the VCO buffer amplifier Q103 is a...

Страница 16: ...en the reference voltage and auto detecting voltage from IC 201 1 2 The output voltage control the field effect tube amplifier keep the output power constant Transmit output power can be adjusted by CPU change the output power by modify of reference voltage through CPU 8 Temperature protecting circuit When the temperature of thermistance is up to 80 protecting circuit will enable Q209 to protect f...

Страница 17: ...15 CP16 CP17 CP18 R11 R12 R49 R56 R72 R73 R74 R75 12 1 2K 0402 5 1 R65 13 1 5K 0402 5 1 R421 14 1 8K 0402 5 1 R414 15 2K 0402 5 1 R420 16 2 2K 0402 5 3 R20 R45 R419 17 3 3K 0402 5 2 R252 R402 18 4 7K 0402 5 11 CP12 CP13 CP14 R21 R23 R44 R47 R51 R53 R443 R67 19 4 7K 0603 5 1 CP11 20 5 6K 0402 5 2 R247 R401 21 6 8K 0402 5 1 R409 22 10K 0402 5 5 R15 R16 R234 R417 R418 23 10K 0603 5 1 R29 24 15K 0402 ...

Страница 18: ...38 C41 C43 C67 C249 C250 C251 C252 C336 C341 C415 C416 C421 C244 49 470PF 0603 X7R 10 16V 3 C5 C40 C241 50 680PF 0402 X7R 10 16V 2 C413 C414 51 1000PF 0402 X7R 10 16V 5 C53 C65 C68 C248 C420 52 3300PF 0402 X7R 10 16V 2 C401 C403 53 0 01UF 0402 X7R 10 16V 8 C13 C48 C49 C50 C52 C63 C404 C412 54 0 022UF 0402 X7R 10 16V 2 C408 C417 55 0 027UF 0402 X7R 10 16V 2 C26 C27 56 0 027UF 0603 X7R 10 16V 1 C409...

Страница 19: ...ET 2 Q203 Q402 78 DTA114YE SOT 416 TRANSISTOR 1 Q15 79 DTA143ZE SOT 416 TRANSISTOR 1 Q405 80 DTA144EE SOT 416 TRANSISTOR 1 Q206 81 DTC114EE SOT 416 TRANSISTOR 5 Q2 Q3 Q5 Q6 Q202 82 DTC114TE SOT 416 TRANSISTOR 1 Q215 83 FMMT717 SOT 23 TRANSISTOR 1 Q4 IC 84 AT24C64 SOP8 EEPROM 1 IC3 85 NJM2904V SSOP8 ACTICE FIL TER 1 IC201 86 NJM2100V SSOP8 IC AUDIO AMP 1 IC400 87 PST9140NR SOT 25A RESET 1 IC6 88 R5...

Страница 20: ...R205 14 330R 0402 5 2 R217 R221 15 470R 0402 5 2 R300 R329 16 560R 0402 5 2 R106 R140 17 680R 0402 5 3 R220 R232 R233 18 820R 0402 5 1 R457 19 1K 0402 5 10 CP5 R25 R39 R48 R77 R107 R127 R426 R460 R462 20 1 2K 0402 5 1 R128 21 1 5K 0402 5 1 R219 22 1 8K 0402 5 2 R338 R339 23 2 2K 0402 5 3 R108 R313 R455 24 2 7K 0402 5 3 R109 R461 R463 25 2 7K 0603 5 1 L313 26 3 3K 0402 5 9 R105 R124 R224 R225 R332 ...

Страница 21: ... CP100 Thermistance 53 NCP18WB473J03RB 0603 NTC Thermistance 1 TH2 Chip capacitor 54 0 5PF 0402 COG 0 1PF 16 V 1 C104 55 0 5PF 0603 COG 0 1PF 16 V 2 C107 C129 56 0 75PF 0402 COG 0 1PF 16 V 3 C306 C309 C317 57 1PF 0402 COG 0 1PF 16 V 1 C319 58 1PF 0603 COG 0 1PF 16 V 1 C215 59 2PF 0402 COG 0 1PF 16 V 2 C115 C217 60 1 5PF 0402 COG 0 1PF 16 V 1 C214 61 1 5PF 0603 COG 0 1PF 16 V 1 C219 62 3PF 0402 COG...

Страница 22: ...7 C239 C301 C304 C310 C311 C312 C313 C314 C315 C326 C327 C330 C331 C335 C338 C356 88 470PF 0603 X7R 10 16V 2 C44 C213 89 680PF 0402 X7R 10 16V 1 C424 90 1000PF 0402 X7R 10 16V 14 C9 C117 C127 C128 C136 C146 C149 C150 C155 C204 C302 C322 C324 C359 91 1000PF 0603 X7R 10 16V 2 C45 C203 92 4700PF 0402 X7R 10 16V 1 C363 93 5600PF 0402 X7R 10 16V 1 C441 94 8200PF 0402 X7R 10 16V 5 C434 C427 C428 C426 C4...

Страница 23: ...Multi Layer inductor 1 L210 117 LQG15HN18NJ02 MLK1005S18NJ 0402 HF Multi Layer inductor 2 L100 L211 118 LQG15HN22NJ02D MLK1005S22NJ 0402 HF Multi Layer inductor 3 L105 L115 L306 119 LQW31HN27NJ03L 1206 HF wire wound inductor 1 L103 120 LQW31HN33NJ03L 1206 HF wire wound inductor 1 L109 121 LQG15HN47NJ02D MLK1005S47NJ 0402 HF Multi Layer inductor 1 L116 122 LQG18HN47NJ00D 0603 HF Multi Layer inducto...

Страница 24: ...154 400 SOD 106 DIODE 1 D1 142 1SV214 SOD 323 A Varactor 1 D104 143 MA2S11100L SOD 523 DIODE 2 D105 D107 144 DA221 SOT 416 DIDOE 1 D202 Triode 145 2SC4617 SOT 416 TRANSISTOR 2 Q107 Q406 146 2SC4988 SOT 89 3L TRANSISTOR 1 Q204 147 2SC5108 Y SOT 416 TRANSISTOR 6 Q1 Q100 Q102 Q103 Q205 Q302 148 2SJ243 SOT 416 FET 1 Q13 149 2SK1824 SOT 416 FET 2 Q214 Q404 150 2SK3475 SOT 89 3L FET 1 Q200 151 2SK3476 2...

Страница 25: ...B A82 UHF V01 PSW V1 0 V01 09 2 8 UHF 1 Version 01 A82 D04 Post Weldment BOM No Specification Packing Description Qty Part No No 1 Frequency discriminator JTBM450C24 1 CF301 2 Mic FOM9745P G421 or CZ034CP421 X15 GP Φ9 7 4 5mm 1 M1 3 feather touch function button 180 Gram 3 6mm 1 S3 4 Mic Jack ST 212 1 J1 5 Earphone Jack PJ 204A 1 J2 6 Encoder EC10SP16 103AO ENCODE 1 CN1 7 potentiometer Switch R087...

Страница 26: ...one and microphone inside cover 1 TPU 80 Degree P06A82 006 non slipping cover left 1 TPU 80 Degree P06A82 007 non slipping cover right 1 TPU 80 Degree Single side Glue S02A82 020 PVC Back glue 20 5 4 5mm 1 S07307 003 Speaker dustproof φ38 48 1 N 250 imported from U S S02307 001 Speaker sponge sheet φ16 1 Unit mm 1 S02307 003 Crystal sponge sheet 7 4 1 mm 1 S02A81 016 Crystal sponge sheet 11 5 6 5 ...

Страница 27: ...02A81 006 Belt Shaft Φ1 9 23 9 Unit mm 1 M19090 007 Round cupreous nut Φ9 0 2 0 M7 1 aurichalceous together with encoder A02307 002 Antenna socket SMA JFD 13 new 1 M23A82 002 Knob 0 2mm 2 Include volumn and channel knobs MKM025 013 Screw Φ2 5 5KMH 2 Antenna socket screw MPB020 033 Screw Φ2 0 3 5PBH 12 Tapping screw M19040 002 nut Φ4 0 3 5 M2 5 2 Aurichalceous Used to fix aluminum hull M19035 004 n...

Страница 28: ... 1 B82412100 AE Power switch supplier 12V 1A BLC151201000WU 1 T14A81 019 Lable of Power switch supplier INPUT 100 240 50 60HZ OUTPUT 12V ___1000mA 54 31mm 1 A01D04 003 Antenna 400 440MHz G RAPK15165062 A0151 1 B09307 002 Lanyard 1 Black B12A82 006 Belt Clip Include screws 1 B11A82 083 Radio A82 D04 D37 1 B01A82 011 User manual 1 B02307 002 Guarantee card 1 B04307 002 Battery package bag 160 85mm 1...

Страница 29: ...2 COG 0 1PF 16V 1 C342 6 9PF 0402 COG 0 5PF 16V 1 C349 7 27PF 0402 COG 5 16V 5 C328 C329 C333 C337 C339 8 56PF 0402 COG 5 16V 1 C118 9 NC 0402 1 C305 10 2PF 0603 COG 0 1PF 16V 2 TC300 TC301 11 3PF 0603 COG 0 1PF 16V 2 CY206 C218 12 5PF 0603 COG 0 1PF 16V 1 C216 13 330PF 0603 COG 10 16V 1 203 Inductance 14 2 2NH 0603 LQG18HN2N2SJ00 1 L201 15 23NH 1206 LQW31HN23NJ03L 1 L103 16 27NH 1206 LQW31HN27NJ0...

Страница 30: ...ABELL A 82 UHF Service Manual 第 14 页共 41 页 EXPLODED VIEW ...

Страница 31: ...OTECTION BAG H25 0085 04 14 PACKING FIXTURE H12 3037 02 21 BELT HOOK J29 0624 03 16 PROTECTION BAG H25 2012 04 3 CAP B09 0351 03 20 SP MIC HOLDER J21 4493 04 17 ITEM CARTON CASE H52 1522 02 G SCREW SET N99 0396 05 ANT WHIP ANTENNA T90 0694 15 M T90 0684 05 M4 ...

Страница 32: ... changed to 500MHz or blow and measurements are highly stable and accurate about 0 2ppm 4 Power Meter 1 Measurable frequency Up to 500MHz 2 Impedance 50Ω instability 3 Measuring range full scare of 10W or so 4 A standard cable 5D2W 1m must be used 5 RF Voltmeter RF V M 1 Frequency range up to 500MHz or so 6 Linear Detector 1 Frequency range up to 500MHz or so 2 Characteristics are flat CN is 60dB ...

Страница 33: ...uency Deviation 35MHz 3 Output voltage 100mV or more 13 Dummy Load 1 8Ω 3W or more 14 Audio Generator AG 1 Frequency range 100Hz to 100KHz 2 Output 0 5mV to 1V 15 Distortion Meter 1 Frequency range 30Hz to 100KHz 2 Input level 50mVto10Vrms ADJUSTMENT FREQUENCE LIST Frequency D04 D37 Channel TX MHz RX MHz TX MHz RX MHz High 440 000 440 000 470 000 470 000 430 000 430 000 460 000 460 000 Middle 420 ...

Страница 34: ...the channel data to the transceiver then backup the data Program the adjustment frequencies which are on the list into the transceiver Note Remember to reload the backed up date after making the adjustment Note Supply power from an external power supply Anode and Cathode as the picture bolow ...

Страница 35: ...ming software for adjustment the following item in the PC mode Measurement Adjustment Item Condition Test equipment Termina l Condition Method Specifications Rem arks 1 Frequency difference adjust Testing Channel CH 03 F counter Program Software Frequency difference adjust middle Enter Frequency Deviation adjust Enable PTT adjust data change frequency Choose Save Data to finish the adjustment Freq...

Страница 36: ...iddle High Mi ddle Middle low Low Sub tone Frequency Deviation 750Hz 50Hz CTCSS frequency deviation adjust Narrow 254 1Hz Test Channel CH 03 Power meter Frequency deviation meter LPF 3KHz HPF 50Hz Cilloscope Antenna Terminal Program Software CTC254 1 Adjust Narrow Middle Enter CTC254 1 adjust Enable PTT adjust data Change CTCSS frequency deviation Choose Save Data to finish the adjustment Sub tone...

Страница 37: ...vel1 Squelch adjust Enable speaker Wide High Middle High Mi ddle Middle low Low Enter Level5 squelch adjust Enable speaker Enable auto adjust data Change squelch Enable speaker Choose Save Data to finish the adjustment Level5 squelch Enable Speaker SSG 121dBm 1dBm Level5 squelch adjust Narrow Disable speaker Test Channel CH 01 02 03 04 05 SSG 122dBm MOD 1KHz DEV 1 5KHz Program Software Level1 Sque...

Страница 38: ...ABELL A 82 UHF Service Manual 第 22 页共 41 页 PCB Part No Chart A Side ...

Страница 39: ...ABELL A 82 UHF Service Manual 第 23 页共 41 页 B Side ...

Страница 40: ... TC101 6P L108 100NH L107 100NH R113 100K Q100 2SC5108 R107 1K C101 3P C115 2P L100 18N L118 4 7UH C154 10P C153 10P C137 0 1U C136 1000P C145 470P R128 1 2K R120 22R C127 1000P C100 470P L110 磁磁 R115 47K C119 0 01U R114 100 R116 100K CLK DATA LOCK MOD PLC PLC PLC PLC VCCN PLC PLC STB VCO OUT C147 4 7UF R131 33K R132 120K C148 6 8K CTC OUT R134 270K R135 47K R136 180K C122 1U MOD L104 220NH R101 1...

Страница 41: ...1 页 Specification Frequency Range 400 440MHz D04 430 470MHz D37 RF Power Output 4W Channel Capacity 16 Channel Operating Voltage 7 5V DC 20 Temperature Range 30 60 22 140 Size and weight 53mm 118mm 31mm with AB L1682 7 4V 1600mAh 266g 0 586bs ...

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