Abell A-80 Service Manual
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Abell A-80 Service Manual

Vhf service manual
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A-80 VHF SERVICE MANUAL
ABELL Industries Co., Ltd
A-80 VHF SERVICE MANUAL
V1.0
Contents
GENERAL.......................................................................................1
REALIGNMENT................................................................................2
DISASSEMBLY FOR REPAIR..............................................................6
CIRCUIT DESCRIPTION.....................................................................8
PARTS LIST....................................................................................12
EXPLODED VIEW.............................................................................21
PACKING........................................................................................26
ADJUSTMENT.................................................................................27
PC BOARD VIEWS...........................................................................32
SCHEMATIC DIAGRAM.....................................................................36
SPECIFICATIONS ............................................................................ 41
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  • Page 1: Table Of Contents

    A-80 VHF SERVICE MANUAL ABELL Industries Co., Ltd A-80 VHF SERVICE MANUAL V1.0 Contents GENERAL……………………………………………………………………………1 REALIGNMENT……………………………………………………………………..2 DISASSEMBLY FOR REPAIR……………………………………………………..6 CIRCUIT DESCRIPTION……………………………………………………………8 PARTS LIST…………………………………………………………………………12 EXPLODED VIEW…………………………………………………………………..21 PACKING…………………………………………………………………………….26 ADJUSTMENT………………………………………………………………………27 PC BOARD VIEWS…………………………………………………………………32 SCHEMATIC DIAGRAM……………………………………………………………36 SPECIFICATIONS …………………………………………………………………. 41 - - 1 - -...

  • Page 2: General

    A-80 VHF SERVICE MANUAL GENERAL INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains all required service information for the equipment and is current as of the publication data. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions.

  • Page 3: Realignment

    A-80 VHF SERVICE MANUAL REALIGNMENT 1 Mode User Mode PC Mode Manufacture Mode MODE FUNCTION User Mode Use this mode for normal operation Use this mode, to make various PC Mode settings by means of the FPU through the RS-232C port.
  • Page 4 FUNCTION MODE ① High/Low power mode Press PTT, and turn ON to switch between powers High/Low. ② Wire cloning Connect sample radio A with radio B with a cloning cable provided by ABELL. Turn on - - 4 - -...
  • Page 5 ·UNX-05 description (PC programming interface cable: Option) The UNX-05 is required to interface the A-80 with the computer. It has a circuit in its D-sub connector (9-pin) case that converts the RS-232C logic level to the TTL level. The UNX-05 connects the side panel jacks of the A-80 to the computer’s RS-232C serial port.

  • Page 6: Disassembly For Repair

    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 because their values are determined automatically when the frequency range (frequency type) is set.
  • Page 7 A-80 VHF SERVICE MANUAL Separating the chassis from the unit 1．Remove the eleven screws⑥. 2．Remove the solder from the antenna terminal using a soldering iron then lift the unit off⑦. 3．Remove the two screws ⑧ and remove the antenna connector.

  • Page 8: Circuit Description

    A-80 VHF SERVICE MANUAL CIRCUIT DESCRIPTION 1. Frequency configuration The receiver utilizes double conversion. The first IF is 45.05MHz and the second IF is 455 KHz. The first local oscillator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the necessary frequencies.
  • Page 9 A-80 VHF SERVICE MANUAL The first IF signal is amplified by Q302, and then enters IC300 (FM processing IC). The signal is heterodyned again with a second local oscillator signal within IC300 to create a 455 KHz second IF signal. The second IF signal is then fed through a 455 KHz ceramic filter (CF300) to further eliminate unwanted signals before it is amplified and FM detected in IC300.
  • Page 10 A-80 VHF SERVICE MANUAL to control the oscillator frequency. 2） VOC The operating frequency is generated by Q104 in transmit mode and Q101 in receive mode. The oscillator frequency is controlled by applying the VOC control voltage, obtained form the phase comparator, to the varactor diodes (D102 and D103 in receive mode and D100 and D101 in transmit mode).
  • Page 11 A-80 VHF SERVICE MANUAL The automatic power control (APC) circuit stabilizes the transmitter output power at a predetermined level by sensing the drain current of the final amplifier Field effect Transistor (FET). The voltage comparator, IC001 (2/2), compares the voltage obtained from the above drain current with a reference voltage which is set using the microprocessor.

  • Page 12: Parts List

    A-80 VHF SERVICE MANUAL PARTS LIST A-80 VHF AH:136-174MHz（A）BOM Ref. No. Specification Package Description Quantity Part No. Chip Resistor 0603 ±5% R24 R26 R27 R28 L401 0.39R 1206 ±5% R017 R018 R019 0603 ±5% 100R 0603 ±5% R406 330R 0603 ±5%...
  • Page 13 A-80 VHF SERVICE MANUAL 100K 0603 ±1% R008 R009 R010 R011 150K 0603 ±1% R012 R013 R37 180K 0603 ±5% R003 270K 0603 ±1% 750K 0603 ±5% R404 0603 ±5% R005 R9 1.8M 0603 ±5% R416 R420 0603 R61 R133 R424 Resistor Network 1K×4...
  • Page 14 A-80 VHF SERVICE MANUAL 0.22UF 0603 X5R，±10%，16V C148 0805 Y5V, +80,-20%,25V C31 C122 1206 Y5V, +80,-20%,25V 0402 C345 Tan Capacitance 0.47UF A type ±20% 6.3V 2.2UF A type ±20% 6.3V C408 C421 4.7UF A type ±20% 6.3V C55 C147 C410 6.8UF...
  • Page 15 A-80 VHF SERVICE MANUAL Crystal 18.0178MHz 6.0×3.5×1.0 18.0178MHz Fuse 3A-32V 1206 R429003-3A-32V Connector FFC/FPC Connector/(Underside 10PIN connecting and upside pressing /0.5mm) A-80 VHF AH:136-174MHz（B）BOM Ref. Specification Package Description Quantity Part No. Chip Resistor 0402 ±5% C303 L100 L111 R140 R141 R205 R300 0603 ±5%...
  • Page 16 A-80 VHF SERVICE MANUAL 0603 ±5% R19 R104 R110 0603 ±1% R501 0603 ±5% R510 0603 ±5% R4 R118 R126 R138 R202 R208 0603 ±5% R521 0603 ±5% R23 R320 R322 0603 ±5% R308 0603 ±5% R514 R113 R115 R116 R303 R304...
  • Page 17 A-80 VHF SERVICE MANUAL C101 C153 C154 C201 C205 10PF 0402 COG，±0.5PF，16V C206 C222 12PF 0402 COG，±5%，16V C211 C229 15PF 0402 COG，±5%，16V C110 C301 16PF 0402 COG，±5%，16V C307 18PF 0402 COG，±5%，16V C125 C130 C212 C309 C202 C305 C322 C329 20PF 0402 COG，±5%，16V...
  • Page 18 A-80 VHF SERVICE MANUAL 0.033UF 0402 X5R，±10%，16V C515 0.047UF 0402 X5R，±10%，16V C510 C518 0.047UF 0603 X5R，±10%，16V C504 0.1UF 0402 X5R，±10%，16V C219 C350 C2 C3 C17 C19 C46 C137 C139 C144 C145 C215 0.1UF 0603 X5R，±10%，16V C226 C234 C333 C347 C353 C362 C363 C500 C511 C513 0.22UF...
  • Page 19 A-80 VHF SERVICE MANUAL LQG11A82NJ Multi layer 0603 L105 LQG18HN82NJ00 inductor MLK1005SR10JT00 Multi layer 0402 L115 L311 LQG15HNR10J02D inductor LF Multi layer MLF1608A1R0K 0603 L315 L316 Inductor NLV25T-1R0J-PF 2520 HF Wound Inductor L210 NLV25T-R56J-PF 2520 HF Wound Inductor L310 L313...
  • Page 20 TSOP16 IF SYSTEM IC300 NJM2902-A SSOP14 AUDIO IC500 Crystal 12.8MHZ 3.2×5mm NT5032S X100 Touch-key TSHW-2VSL 7×2.5mm S1 S2 A-80 VHF AH: 136-174MHz Weld Part Ref. Quantit Material Specification Package Description Part No. UM-5 Crystal 44.595MHz X300 Crystal Couple 45.05MHz UM-5...

  • Page 21: Exploded View

    A-80 VHF SERVICE MANUAL Earphone (PJ-327、ST-016-041、 -Jack PJ-3527)(gilded) Speaker 4R/1W (FCE) φ36mm F36M188A Speaker One red, one black，Copper wire ￠1.0×80 Connection with 7 cores ED08714O-FE18C9.0-A16-10 Encoder Potentiometer R08710NS-FE15C7.0-A103-0 switch BAT1 (Remark： Assembled by Anode reed <M01307-014>,A node bracket<P02307 Power source Assembled -003>, Screw...
  • Page 22 A-80 VHF SERVICE MANUAL Ref. Coding Name Specification Quantity Remark Brass-colored ○ M19040-002 Screw Φ4.0×3.5×M2.5 Molding on the cover T15307-017 雷霆战将 PS mark Domestic (match) ○ “A-80”English T15307-020 Oversea (match) PS mark ABS+PC（Resin） ○ P01307-020 Cover /(contain Channel mark) “ABELL 欧标”...
  • Page 23 A-80 VHF SERVICE MANUAL ED08714O-FE18C9.0- ○ Coder A16-100 Brass color, matching ○ M19095-003 Φ9.5×3.0×M6 with coder and potentiometer Soft circuit ○ S2676B (T80FPC-2) R08710NS-FE15C7.0- Potentiometer ○ A103-00A switch Rubber waterproof ○ L03307-003 RUBBER'35° loop ○ M17307-006 Aluminum shell ADC12 Plating colorful , ○...
  • Page 24 A-80 VHF SERVICE MANUAL ○ P09307-004 Battery surface Battery touch plate ○ M12308-001 5.7×5.2mm (short) ○ P12307-002 Belt ○ P16307-003 Belt seat ○ M18308-006 Belt spring clip ○ M18307-008 Belt spring ф0.8 line ○ M02307-004 Belt spindle Φ1.9×18.8(unit: mm) Battery clip ○...
  • Page 25 A-80 VHF SERVICE MANUAL Package Material Coding Material Specification Quantity Remark "防伪标识"（marked by the Package outside T13307-001 frequency and the remark country） Intelligent charger Input :12VDC/600mA THC500B rapid charger B06307-007 （finished output: 12VDC/500mA product ） Ni-MH battery B10307-008 group（finished 7.2V/1300mA...

  • Page 26: Packing

    A-80 VHF SERVICE MANUAL Packing View 15.PROTECTION BAG (H25-0085-04) 14.PACKING FIXTURE 21.BELT HOOK (H12-3037-02) (J29-0624-03) 16.PROTECTION BAG ANT.WHIP ANTENN A (H25-2012-04) (T90-0694-15):M (T90-0684-05);M4 17.ITEM CARTON CASE (H52-1522-02) 3. CAP G. SCREW SET (B09-0351-03) (N99-0396-05) 20.SP/MIC HOLDER (J21-4493-04) Adjustment - - 26 - -...
  • Page 27 A-80 VHF SERVICE MANUAL Adjustment Required test Equipment 1．Stability power supply 1．The supply voltage can be changed between 5V and 18V, and the current is 3A or more. 2．The standard voltage is 7.5V 2．DC Ammeter 1．Class 1 ammeter (17ranges and other features).
  • Page 28 A-80 VHF SERVICE MANUAL 10．Spectrum Analyzer 1．Measuring range：DC to 1GHz or more. 11．Standard Signal Generator (SSG) 1．Maximum frequency：500MHz or more. 2．Output：－133dBm/0.05μV to 7dBm/501mV 3．Output resistance：50Ω 12．Tracking Generator 1．Center frequency：50KHz to 500MHz 2．Frequency Deviation：±35MHz 3．Output voltage：100mV or more 13．Dummy Load 1．8Ω，3W or more 14．Audio Generator (AG)
  • Page 29 A-80 VHF SERVICE MANUAL Note：Supply power from an external power supply (Relay terminal ：+ Jig <chassis> ：-) Use the IMG-07D programming software for adjustment the following item in the PC mode Squelch Level, Transmit frequency, DQT balance, RF power, QT deviation, DQT deviation,...
  • Page 30 A-80 VHF SERVICE MANUAL Test Terminal Parts method Remark equipment 1 ． Band 1) CH：RX center Tra generator TC301 Adjust the frequency pass-filter 2)Tra generator output -40dBm Spectrum L312 so that it becomes the Connect the spectrum analyzer Analyzer spectrum...
  • Page 31 A-80 VHF SERVICE MANUAL 4.MIC 1)CH: TX center Check ±2.2KHz～ SENS (+、- peak whichever 3.6KHz(wide) 1KHz/12mV is maximum) ±1.1KHz～ 1.8KHz(narrow) 5.QT DEV 1)CH: TX high Modulation Antenna PC key Adjust to ±0.75 ±50Hz QT:67.0Hz Analyzer or linear KHz(wide) ±50Hz MODE) detector Adjust to ±0.35...
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  • Page 36: Schematic Diagram

    A-80 VHF SERVICE MANUAL Schematic Diagram PTT LED MONI LED REGC P14/RX D FLMD0 P13/TX D P123 P124 RESET AVREF AVSS - - 36 - -...
  • Page 37 A-80 VHF SERVICE MANUAL CL O CK D A T A G N D BISW V CC FO U T X O U T X I N - - 37 - -...
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  • Page 40 A-80 VHF SERVICE MANUAL MI XI OSC1 OSCO NREC MI XO NDET RSSI I FI I FO QUAD FILO FILI - - 40 - -...

  • Page 41: Specifications

    A-80 VHF SERVICE MANUAL Specification Frequency range…………………………………………………………146-174MHz: AH 136-150MHz: AL 136-174MHz: A37 RX power output…………………………………………………………5W Channel No.………………………………………………………………16 Work voltage……………………………………………………………..7.5V DC±20% Temperature range……………………………………………………. -30℃ to ±60℃ (-22℉to +140℉) Dimension and weight with KNB-15A (7.2V 1200mAh)…………… 58(2-5/16) wide×125.5(4-15/16) high×35(1-3/8)long mm(inch) 380g (0.831bs)

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