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

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A-80 UHF SERVICE MANUAL
ABELL Industries Co. Ltd
A-80 UHF SERVICE MANUAL
V.1
Contents
GENERAL..............................................................................................1
REALIGNMENT.......................................................................................4
DISASSEMEBLE FOR REPAIR..................................................................6
CIRCUIT DESCRIPTION...........................................................................7
PARTS LIST............................................................................................11
EXPLODED VIEW...................................................................................32
PACKING..............................................................................................36
ADJUSTMENT.............................................................................................37
PC BOAD VIEW..........................................................................................43
SCHEMATIC DIAGRAM...........................................................................45
SPECIFICATIONS ...................................................................................50
- 1 -

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  • Page 1: Table Of Contents

    A-80 UHF SERVICE MANUAL ABELL Industries Co. Ltd A-80 UHF SERVICE MANUAL Contents GENERAL………………………………………………………………………………….1 REALIGNMENT……………………………………………………………………………4 DISASSEMEBLE FOR REPAIR…………………………………………………………6 CIRCUIT DESCRIPTION…………………………………………………………………7 PARTS LIST……………………………………………………………………………..11 EXPLODED VIEW………………………………………………………………………..32 PACKING………………………………………………………………………………….36 ADJUSTMENT…………………………………………………….........37 PC BOAD VIEW……………………………………………………......43 SCHEMATIC DIAGRAM…………………………………………………………………45 SPECIFICATIONS ……………………………………………………………………..50 - 1 -...

  • Page 2: General

    A-80 UHF 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 A-80 UHF SERVICE MANUAL Setting Acquainted ① PTT (Push-To-Talk) switch Press this switch, then speak into the microphone to call a station. Release the switch to receive. ② Monitor Key Press and hold to monitor how busy the current channel is and to monitor signals being received that don’t contain the matched QT/DQT code.

  • Page 4: Realignment

    The programming software can be used with and IBM PC or compatible. Figure 1 shows the setup of an IBM PC for programming. Connection procedure 1．Connect A-80 to the PC with using the interface cable. 2．When data is transmitted from transceiver the red LED lights. When data is received by transceiver the green LED lights.
  • Page 5 (PC programming interface cable：Option) The interface cable is required to connect A-80 to the PC. It has a circuit in their D-sub connection (9-pin) cases that convert the RS-232C logic level to the transistor logic lever. The cable connects the side panel jacks of the A-80 to the PC’S RS-232C serial port.

  • Page 6: Disassemeble For Repair

    A-80 UHF SERVICE MANUAL DISASSEMBLEY FOR REPAIR Separating the case assembly from the chassis 1．Remove the knob① and the round nut② 2．Remove the two screws③。 3．Expand the right and left sides of the bottom of the case assembly, lift the chassis, and remove it from the case assembly④.

  • Page 7: Circuit Description

    A-80 UHF SERVICE MANUAL Separating the chassis from the unit 1．Remove the 11 screws⑥ 2．Remove the solder from the antenna terminal using a soldering iron then lift the unit off⑦ 3．Remove the two screws⑧ and remove the antenna connector. Note：When reassembly the unit to the chassis, be sure to solder the antenna terminal.
  • Page 8 A-80 UHF SERVICE MANUAL 1） Front-end RF amplifier An incoming signal from the antenna is applied to an RF amplifier (Q314) after passing through a transmit/receive switch circuit (D301 and D302 are off) and a band pass filter. After the signal is amplified (Q314), the signal is filtered through a band pass filter (D301 and D302) to eliminate the unwanted signal before it is passed to the first mixer.
  • Page 9 A-80 UHF SERVICE MANUAL The PLL circuit generates the first local oscillator signal for reception and the RF signal for transmission. 1） The frequency step of the PLL circuit is 2.5 or 3.125 KHz. A 12.8MHz reference oscillator signal is divided at IC100 by a fixed counter to produce the 2.5 or 3.125 KHz reference frequency.
  • Page 10 A-80 UHF SERVICE MANUAL The RF amplifier output signal is passed through a low-pass filter network and a transmit /receive switching circuit before it is passed to the antenna terminal. The transmit /receive switching circuit is comprised of D200, D301 and D302. D301 and D302 turned on (conductive) in transmit mode and off (isolated) in receive mode.

  • Page 11: Parts List

    A-80 UHF SERVICE MANUAL PARTS LIST A-80（D03）ABOM Ref. Specification Package Description Quantity Part No. Chip Resistor 0402 ±5% R244 0603 ±5% R24 R26 R27 R28 0.39R 1206 ±5% R236 R237 R238 0603 ±5% 100R 0603 ±5% R449 330R 0603 ±5%...
  • Page 12 A-80 UHF SERVICE MANUAL 0603 ±5% R410 0603 ±5% 0603 ±5% R135 100K 0402 ±5% R245 R31 R38 R41 R43 R44 R49 100K 0603 ±5% R50 R51 R139 R425 120K 0603 ±5% R132 R37 R239 R240 150K 0603 ±5% R241 R242...
  • Page 13 A-80 UHF SERVICE MANUAL 1000PF 0603 X5R，±10%，16V C248 3300PF 0402 X5R，±10%，16V C401 C403 3900PF 0402 X5R，±10%，16V C1 C4 C47 C48 0.01UF 0402 X5R，±10%，16V C50 C51 C404 C412 0.022UF 0402 X5R，±10%，16V C408 C417 0.027UF 0402 X5R，±10%，16V C10 C11 C409 0.033UF 0402 X5R，±10%，16V...
  • Page 14 A-80 UHF SERVICE MANUAL SOT-416 2SK1824 Q214 Q402 DTA114YE SOT-416 TRANSISTOR Q10 Q13 Q2 Q3 Q12 Q14 DTC114EE SOT-416 TRANSISTOR Q202 Q203 DTC114TE SOT-416 TRANSISTOR Q215 FMMT717 SOT-23 TRANSISTOR Q211 NJM2904V SSOP8 IC (APC) IC201 AT24C08(SI27) SOP8 EEPROM NJM2100V SSOP8...
  • Page 15 A-80 UHF SERVICE MANUAL 0805 ±5% L301 R112 R129 R140 R206 R304 0603 ±5% R308 R309 R310 R311 R436 R440 0805 ±5% R201 R203 0603 ±5% R2 R103 R117 R216 R416 0603 ±5% R218 R222 R322 0603 ±5% R100 R200 R202...
  • Page 16 A-80 UHF SERVICE MANUAL 0603 ±5% R453 R113 R115 R116 R138 R302 R303 R306 R307 R315 R316 R317 100K 0603 ±5% R318 R320 R325 R326 R327 R328 R435 R438 R444 R445 R446 120K 0603 ±5% R122 R428 R437 R452 180K 0603 ±5%...
  • Page 17 A-80 UHF SERVICE MANUAL 30PF 0402 COG，±5%，16V C355 30PF 0603 COG，±5%，16V C206 33PF 0402 COG，±5%，16V C348 39PF 0603 COG，±5%，16V C205 56PF 0402 COG，±5%，16V C437 82PF 0402 COG，±5%，16V C326 C350 C352 C16 C102 C117 C141 C142 100PF 0402 COG，±5%，16V C143 C118...
  • Page 18 A-80 UHF SERVICE MANUAL Y5V,＋80%－ 0805 C226 C13 20%,25V 0402 C220 C318 C334 C424 0603 C155 Adjustable capacitance φ2 TZVY2Z060A110T00 TC100 TC101 TC301 10PF φ2 TZVY2Z100A001R00 TC300 Tan capacitance 0.68UF A type ±20% C114 A type ±20% 3.3UF C140 4.7UF A type ±20%...
  • Page 19 A-80 UHF SERVICE MANUAL NLV25T-R56J-PF 2520 HF wound inductor L305 L203 NLV25T-1R0J-PF 2520 HF wound inductor L200 HF Multi layer R120 L101 L102 L104 L112 MLF1608A3R3K 0603 Inductor HF Multi layer LFLK21254R7K 0805 L118 Inductor AIR-CORE COIL with 0.4×φ1.6×3TR P type L307 L308 L310 L311 Pin "E”...
  • Page 20 A-80 UHF SERVICE MANUAL 2SK3475 SOT89-3L Q200 2SK3476 2-5N1A Q201 AUDIO POWER TA7368F SOP10 TA31136FN TSOP16 IF SYSTEM IC300 IC100 MB1511PFV SSOP20 IC401 NJM2902-A SSOP14 AUDIO Crystal 12.8MHZ 3.2×5mm NT5032S X100 Touch-key TSHW-2VSL 7×2.5mm S1 S2 PSW 1.0 V01 PCB（A-80 UHF -072407 V01）...
  • Page 21 A-80 UHF SERVICE MANUAL 6.8K 0603 ±5% R409 0402 ±5% R231 R234 R33 R35 R47 R59 R417 0603 ±5% R418 0603 ±5% R411 R412 0603 ±5% R423 0603 ±5% 0603 ±5% R400 R136 0603 ±5% 0603 ±5% R404 R405 R407 R408 0402 ±5%...
  • Page 22 A-80 UHF SERVICE MANUAL 220PF 0402 COG，±5%，50V C18 C23 C36 C34 C35 C40 C41 C43 C52 470PF 0402 X5R，±10%，16V C53 C241 C249 C250 C252 C415 C416 470PF 0603 X5R，±10%，16V C251 560PF 0402 X5R，±10%，16V C421 680PF 0402 X5R，±10%，16V C413 C414 1000PF 0402 X5R，±10%，16V...
  • Page 23 A-80 UHF SERVICE MANUAL MA2S111 SOD-523 DIODE D3 D4 Triode 2SA1362 SOT-23 TRANSISTOR 2SC4617（BR） SOT-416 TRANSISTOR Q400 Q401 2SC4919 SOT-523 TRANSISTOR Q403 SOT-416 2SK1824 Q214 Q402 DTA114YE SOT-416 TRANSISTOR Q10 Q13 DTC114EE SOT-416 TRANSISTOR Q2 Q3 Q12 Q14 Q202 Q203...
  • Page 24 A-80 UHF SERVICE MANUAL 0805 ±5% R201 R203 0603 ±5% R2 R103 R117 R216 R416 0603 ±5% R218 R222 R322 R323 0603 ±5% R100 R200 R202 100R 0603 ±5% R114 R301 R335 150R 0603 ±5% R18 R130 R314 220R 0603 ±5%...
  • Page 25 A-80 UHF SERVICE MANUAL R113 R115 R116 R138 R302 R303 R306 R307 R315 100K 0603 ±5% R316 R317 R318 R320 R325 R326 R327 R328 R435 R438 R444 R445 R446 120K 0603 ±5% R122 R428 R437 R452 180K 0603 ±5% R333 R337 R443...
  • Page 26 A-80 UHF SERVICE MANUAL 33PF 0402 COG，±5%，16V C348 56PF 0402 COG，±5%，16V C437 82PF 0402 COG，±5%，16V C326 C350 C352 C16 C102 C117 C141 C142 100PF 0402 COG，±5%，16V C143 C203 C209 150PF 0402 COG，±5%，16V 220PF 0402 COG，±5%，16V C38 C44 C111 C118 C128...
  • Page 27 A-80 UHF SERVICE MANUAL Adjustable capacitance φ2 TZVY2Z060A110T00 TC100 TC101 TC301 10PF φ2 TZVY2Z100A001R00 TC300 Tan capacitance ±20% 0.68UF A type C114 A type ±20% 3.3UF C140 4.7UF A type ±20% C138 C152 C308 A type C15 C357 C436 10UF ±20% 6.3V...
  • Page 28 A-80 UHF SERVICE MANUAL AIR-CORE COIL with L304 0.4×φ1.8×4TR P type pin "E” AIR-CORE COIL with 0.4×φ1.6×5TR P type pin "E” AIR-CORE COIL with 0.4×φ1.6×7TR P type L202 pin "E” 0402 L116 Diode HSC277 SOD-523 DIODE D201 D300 D301 D302...
  • Page 29 A-80 UHF SERVICE MANUAL PSW 1.0 V01 PCB （A-80 UHF V01） -072407 A-80 (D03/D47) Weld part BOM Ref. Material Specification Package Description Quantity Part No. 44.595MHz UM-5 Crystal X300 Crystal Q45007BD5 XF300 UM-5×4POLE Couple Filter (45.05MHz) XF301 Ceramic LTM455FW CF300...
  • Page 30 A-80 UHF SERVICE MANUAL -023>,cathode and anode rubber dot <L06307-003>) Soft circuit S2676B (T80FPC-2) TH307H(D03/D47) ASSEMBLED PART BOM Coding Material Specification Quantity. TH307H （D03） Semi-manufactured goods F01307-025 Assembled material： plastic parts P01307-020 Shell P08307-006 Volume knob(small) P07307-006 Channel knob(big) P04307-006 Indicated light guiding pole（light）...
  • Page 31 A-80 UHF SERVICE MANUAL M01307-015 Cathode reed MKM025-013 Screw Φ2.5×5KM MPM025-043 Screw Φ2.5×7PM MPM025-053 Screw φ2.5×8PM MPB020-033 Screw Φ2.0×3.5PBH MPB017-023 Screw Φ1.7×4.0PB M19040-002 Φ4.0×3.5×M2.5 M19095-003 Φ9.5×3.0×M6 M19013-002 Φ13.5×2.5×M9 M18307-008 Belt spring ф0.8 line M02307-004 Belt spindle Φ1.9×18.8(unit: mm) M18308-006 Belt spring clip...

  • Page 32: Exploded View

    “雷霆战警”PS mark Domestic (Match) ○ T15307-020 “A-80”English PS mark Oversea (match) ABS+PC/ Contained ○ P01307-020 Shell channel mark “ ABELL 欧 标 ” PS mark ○ T15307-018 Domestic (Chinese） “ABELL”PS mark T15307-019 Oversea (English ） ○ P11307-003 PTT plastic key bracket ○...
  • Page 33 A-80 UHF SERVICE MANUAL ○ P07307-006 Channel knob( big) AB/ spread white color ○ P08307-006 Volume knob(small) ○ L07307-002 Rubber mic cover RUBBER'50° N-250#（Imported from ○ S07307-003 Speaker dustproof net φ38×48 USA） ○ L02307-004 Speaker rubber mat RUBBER ○ S02307-001 Speaker sponge mat φ16×1（Unit：mm）...
  • Page 34 A-80 UHF SERVICE MANUAL PSW 1.0 J06-A80/01 ○ PCB board（A80VHF） A80-07-18/1 VHF Plating colorful, cover ○ MPM025-043 Screw Φ2.5×7PM and aluminum shell fixing screw Transceiver host mark “Transceiver type” means ○ T12307-004 (Frequency） The frequency range mark T14307-007 Battery mark (Chinese) 1300mA 7.2v 31.6×23.6mm...
  • Page 35 A-80 UHF SERVICE MANUAL ○ S08307-001 Waterproof paster PORON TH307H（A47） F01307-021 Semi-manufactured-goods S02307-003 Crystal sponge mat 7×4×1(mm) S06307-005 Radiate silicon gel 7×3.8×1.0 Match 2SK3476 - 35 -...

  • Page 36: Packing

    A-80 UHF SERVICE MANUAL Packing 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 ADJUSTMENT (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) - 36 -...

  • Page 37: Adjustment

    A-80 UHF 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 38 A-80 UHF SERVICE MANUAL 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 39 A-80 UHF SERVICE MANUAL (Relay terminal ：+ Jig <chassis> ：-) Use the A-80 programming software for adjustment the following item in the PC mode Squelch Level, Transmit frequency, DQT balance, RF power, QT deviation, DQT deviation, Battery level Section common to the transmitter and receiver (VCO)
  • Page 40 A-80 UHF SERVICE MANUAL 1 ． Band 1) CH：RX center Tra generator TC301 Adjust the frequency pass-filter 2)Tra generator output -40dBm Spectrum L103 TC300 so that it becomes the Connect the spectrum analyzer to Analyzer spectrum waveform L103 terminal shown in fig1.
  • Page 41 A-80 UHF SERVICE MANUAL 1)CH: TX center Modulation Antenna VR400 Adjust to ±100Hz Maximum Analyzer or linear Speaker ±4.2KHz(wide) ±1.8KHz～ 1KHz/120mV detector Wide check 2.2KHz PTT: ON (LPF:15KHz) (+、- peak whichever Oscilloscope is maximum) Audio generator 5.MIC 1)CH: TX center Check ±2.2KHz～...
  • Page 42 A-80 UHF SERVICE MANUAL BPF-Wave（Figure. 1） - 42 -...

  • Page 43: Pc Boad View

    A-80 UHF SERVICE MANUAL PARTS VIEW side - 43 -...
  • Page 44 A-80 UHF SERVICE MANUAL Side B - 44 -...

  • Page 45: Schematic Diagram

    A-80 UHF SERVICE MANUAL Schematic Diagram CPU control circuit G N D P T T L E D P 31 V D D M O N I L E D P 30 V S S P 17 R E G C...
  • Page 46 A-80 UHF SERVICE MANUAL - 46 -...
  • Page 47 A-80 UHF SERVICE MANUAL PLL、VCO Circuit CL O CK D A T A G N D BISW V C C FO U T X O U T X I N - 47 -...
  • Page 48 A-80 UHF SERVICE MANUAL Receiving Circuit 100 0 P M I X I O SC1 O SCO N RE C M I X O N D E T V CC RSSI I FI I FO D E C Q U A D...
  • Page 49 A-80 UHF SERVICE MANUAL Transmitting Circuit - 49 -...

  • Page 50: Specifications

    A-80 UHF SERVICE MANUAL Specification Frequency range………………………………………………………….400-430MHz: DH 440-480MHz: DL RF power output………………………………………………………… 4W Channel capacity…………………………………………………………16 Work voltage……………………………………………………………..7.5V DC±20% Temperature range………………………………………………………. -30℃ to ±60℃ (-22℉to +140℉) Dimension and weight with KNB-15A (7.2V 1100mAh)……………… 56(2-5/16) wide×115(4-15/16) high×33(1-3/8)long mm(inch) 380 GB (0.831bs)

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