Maxon SM5102 Service Manual
  1. Manuals
  2. Brands
  3. Maxon Manuals
  4. Radio
  5. SM5102
  6. Service manual

Maxon SM5102 Service Manual

146mhz~174mhz
Hide thumbs
Table of Contents

Advertisement

Quick Links

SM5102 Radio
SM5102 (146MHz~174MHz)
MOBILE RADIO SERVICE MANUAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SM5102 and is the answer not in the manual?

Questions and answers

Related Manuals for Maxon SM5102

Summary of Contents for Maxon SM5102

  • Page 1 SM5102 Radio SM5102 (146MHz~174MHz) MOBILE RADIO SERVICE MANUAL...
  • Page 2 We urge you to thoroughly read this manual before operating the radio. Application of some functions described in this manual is determined by the system you use. Your Maxon Dealer will program your radio so that you have the greatest number of functions possible relative to your needs.
  • Page 3 Maxon SM5102Radio This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. Unpacking Inforamtion Remove and carefully inspect the contents of your package(s) for the following items:...
  • Page 4 Great care must be taken when handling these components. They must not be broken or subjected to excessive heat. 2. Never operate the radio transmitter without the correct Maxon antenna, or a suitable artificial load, connected.

  • Page 5: Table Of Contents

    Maxon SM5102Radio TABLE OF CONTENTS 1.SPECIFICATION 1.1 General 1.2 Transmitter 1.3 Receiver 2.MAINTENANCE & REPAIR Introduction 2.1.1 Test Equipment Connection 2.1.2 Transmitter Performance Tests 2.1.3 Test Equipment Connection 2.1.4 Transmitter Performance Tests 2.1.5 Receiver Performance Tests Alignment 2.2.1 Disassembly and Re-assembly of the Radio 2.2.2...

  • Page 6: General

    MaxonSM5102Radio 1.1 General Performance Specifications FTZ 17TR2049 July 88 TIA-603 IEC 68 Series EC 529 IP54 MIL STD 810 C Band (Tx & Rx) (Switching range without retuning) VHF (V2) 146 – 174MHz Channel Spacing 12.5kHz, / 25kHz (programmable) (12.5, /25kHz switchable by CPU control) High Power 50W nominal RF Output Power...
  • Page 7 Maxon SM5102Radio Vibration BS2011 : Part 2.1Fc IEC 68-2-6 Part 2.1Fd IEC 68-2-34 Robustness Mil Std 810 C 20kV (C-MIC = 15kV) EMC Directive 89/336/EEC May 89 ETS 300.279 Physical Dimensions 175(W) x 158(D) x 48(H) mm Weight 1.44kgs Programmer...

  • Page 8: Transmitter

    Maxon SM5102Radio 1.2 Transmitter 1.3 Receiver Test Method is ETS 300.086 2001 unless stated. Test Method is ETS 300.086 2001 unless stated. Performance without Sub-Audio Modulation Performance without Sub-Audio Modulation Power Output Sensitivity High Power 50W nominal 12dB SINAD UHF: Better than –117dBm...

  • Page 9: Maintenance & Repair

    Maxon SM5102Radio 2 MAINTENANCE & REPAIR 2.1 Introduction This section covers the tests which should be undertaken prior to handover of the radio to the end user. All of the following tests can be carried out without having to gain access to the interior of the radio.

  • Page 10: Test Equipment Connection

    MaxonSM5102Radio Prerequisites 2.1.2 Transmitter Performance Tests For the following tests, signal generator Power Output modulation level should be set to Average System Deviation, i.e. 60% of maximum a. Connect the transmitter to the system deviation. Communications Test Set (CTS) with the power meter set to read 50W.

  • Page 11: Receiver Performance Tests

    Maxon SM5102Radio Audio Output When CTCSS and DCS performance checks a. Set the RF signal generator to 1mV pd are also required, ensure that the lowest, (-47.0dBm) and the tone and deviation middle and highest Rx/Tx frequencies as above. include: Lowest Rx/Tx freq.

  • Page 12: Alignment

    MaxonSM5102Radio 2.2 Alignment Replace the front panel by reversing the procedure. WARNINGS Any repairs or adjustments should only be Rx VCO made by, or under the supervision of, a a. Select Channel 1. qualified radio-telephone service technician. b. Check that the VCO tuning voltage at TP1 is >1.8V CAUTION c.

  • Page 13: Receiver Alignment

    Maxon SM5102Radio 2.2.2 Receiver Alignment h. Adjust the RF level until the SINAD meter reads 10dB. The radio should unmute. The receiver is, by design, a broadband device. It should require no special alignment unless repairs are performed on This completes the receiver alignment the receiver.

  • Page 14: Detailed Functional Description

    Maxon SM5102Radio 3 DETAILED FUNCTIONAL DESCRIPTION 3.1 VHF Transmit 1. Buffer 2. Power AMP 3. Low Pass Filter 4. Antenna Switch 5. A.P.C Circuits Buffer VCO output level is 0dBm and amplified to +17dBm (UHF)/(VHF). The buffer consists of Q2, 12,13 for isolation and gain.
  • Page 15 MaxonSM5102Radio Level Shifter & Charge Pump The charge pump is used for changing output signals Fr, Fv at PLL IC from 0-5v to 16v necessary for controlling vco. DC to DC Converter The DC to DC converter converts the 8v to 15-16v to supply the necessary voltage for wide range frequency in vco. The TX and RX VCO generates RF carrier and local frequency and each VCO is switched by a TX/RX power source.
  • Page 16 Maxon SM5102Radio Power Amplifier and Harmonic Filter The power amplifier contains transistors Q12, Q13, Q18, Q39, Q28 and associated inductors, capacitors and resistors. When the radio is in transmit mode the diode D1,D15 is forward biased enabling the modulated RF signal from the VCO (amplified by the first stage amplifier / buffer Q12 and Q13) to pass to the pre-driver Q18 via Q39.

  • Page 17: Maintenance And Repair

    MaxonSM5102Radio Receiver Audio and Sub-audio Circuit The receiver audio circuit has been fully controlled by Baseband Process, CMX881 supported by CML using internal software program. Frequency and CTCSS/DCS data storage EEPROM Rx/Tx channels, CTCSS/DCS as well as other data from the programmer are stored in the EEPROM. The data stored is retained without power supplied.

  • Page 18: Front Panel Pcb

    Maxon SM5102Radio TCXO Set the channel selector to the mid-range frequency 455 MHz, adjust TCXO, for a reading of 445 MHz +/- 200Hz. For the UHF data radio, adjust the TCXO and set the frequency within the required range. 1. Adjust RV5 for fixing up High Power(50W) 2.
  • Page 19 MaxonSM5102Radio 1. Features ■ Wideband frequency separation ■ 9 character display with icons ■ 2 or 25W Programmable output power ■ Programmable 12.5 /25 KHz Channel Spacing ■ Programmable function keypad ■ Channel Scan ■ Priority Channel Scan ■ Look Back Channel ■...

  • Page 20: Basic Operation

    Maxon SM5102Radio 3. BASIC Operation ■ Function keys There will be six push-buttons on the face of the SM5102; Up, Down, P1, P2, P3 and Emergency. below are the default programming settings. ■ Up button/ Down key - This button will allow the operator to scroll up/down through the available channel. A press-and-release of this button will increase/decrease the channel number.
  • Page 21 MaxonSM5102Radio ■ Emergency KEY – When emergency button is pushed, an emergency signal is automatically transmitted for the specified time period. This is where the DTMF tone to be transmitted as the Emergency Call can be entered. After the emergency call, the transceiver performs transmission and reception alternately with the following conditions: - Transmits the microphone signals - Receives the signal and emits audio When Press the PTT, the function is cancelled.

  • Page 22: Basic Features

    Maxon SM5102Radio 2.Adding or Deleting to P Scan List If each Channel is included in P Scan Editable List, Channel Number would display P scan Icon. To add or delete channel from P Scan Editable List, use P2 button. ■ Programming When the SM-2000/5000 Series is powered from the programming interface, the MCU checks PC-program Enable port.
  • Page 23 MaxonSM5102Radio ■ Squelch Options The Radio supports 3 kinds of Squelch Options. Different Squelch option can be applied to each channel. 1. CTCSS 38 kinds of TIA/EIA Standard CTCSS Tones can be set up. All tones can be set up using PC Programmer. - TX Operation: If PTT key is pressed, the Radio occurs CTCSS tone, which is programmed to each channel and goes TX mode.
  • Page 24 Maxon SM5102Radio ■ Normal Scan Any number of channels shall be entered into the scan list. This will be equal to or less than the number of programmed channels. The LED shall flash green if programmed to. The flashing green LED will stop when ‘CARRIER’, or ‘CARRIER AND CORRECT TONE’.
  • Page 25 MaxonSM5102Radio ○ 2 Push the appropriate [0]-[9], A,B,C,D,*,# to enter the desired character. ○ 3 Push the CLR Key. Number or character will be deleted at last Number or character. ○ 4 Push and hold the CLR key. All messages will be deleted. the radio enter the standby mode. ○...
  • Page 26 Maxon SM5102Radio ○ 4 . Push and hold the ACC-703 [STR ] button to enter the message scroll mode. ○ 5 . Push the ACC-703 [#],[ * ] button to scroll the messages. ○ 6 . Push [SMS] : again to return to the standby condition 3.

  • Page 27: Function Display

    MaxonSM5102Radio 5. FUNCTION Display ֠ ֠ ֠ ֠ L L L L 1 Signal strength indicator : Indicates relative signal strength level 2 TX Indicator :Appears while transmitting 3 Scan Indicator : Appears at the scan Channel 4 P Scan Indicator : Appears at the Priority scan Channel 5 Key Lock Indicator : Appears during the key lock function is on.
  • Page 28 Maxon SM5102Radio 6. PC Programmer ■ Computer Pentium II processor or faster (recommended) ■ Operating System Microsoft Windows 98, 2000, NT, XP ® 7. Program Cable Block ■ Pc Program & Auto Test Program 15 pin Connect 9 pin Connect ■...

  • Page 29: Troubleshooting Guide

    MaxonSM5102Radio 4 TROUBLE SHOOTING GUIDE SYMPTOMS CAUSES COUNTERMEASURES 1. Complete discharge of battery 1. Replace battery. (13.8V+/-10%) 2. Replace regulator(U20) Unit does not Work 2. Regulator 3. IC1.Q20 (5v+/-0.2v) 3. 5v voltage source 1. Pll error 1. Check U1.Y2.U6 2. Filtering Error 2.

  • Page 30: Basediagram

    Maxon SM5102Radio BASE DIAGRAM MANUFACTURER’S BASE DIAGRAM REFERENCE NO. SYMBOL PART NUMBER KTC5084 Q202.203.302.303 KTC3880 AT-41532 Q601 KTC4075 Q41.42.43.44.46 KTA2014 Q602.641.643 PBR951 BFR92A .Q3.2.13 KTC3875S Q901.904.7 KTA1504S Q902.903 KRC104S (ND) Q5.6.8.10.16 KRC101SNA .19.22.26.27.30.32 KRC404V 34.37.38.48 KRA104S (PD) KRA304V] KRA310V KRA226...
  • Page 31 MaxonSM5102Radio ZENER (5.6V) D23.22.5 HSMS-2817 D911 1SV229 1SV217 D201.202.301 MMBV109 D701.901.921 HVU300ATRU 1SS314 KDS121V KDS160 KDS114 SM4004 UPP9401 D.2..15 Q722 KTA1663 SI4412DY BFG35 BLT50 AUDIO XRC5640C.QFP (AUDIO PROCESSOR)
  • Page 32 Maxon SM5102Radio FX828D5 MT8870D U13.34 Codec IC CMX881 HD6473837UX KIA324F Voltage Detector IC MB15E03SL PLL IC TA31136FN IF IC NJM12903V Comparator NJM12904V OP AMP MC14053BD IC406 MUX./DEMUX. MC14066BD Analog S/W IC MAX232 DBL5020V OP AMP KIA324F COMPANDER NJM12904V OP-AMP CAT25C32/64...
  • Page 33 MaxonSM5102Radio TK71750SCL TK71733SCL IC1.U22 TK71730CL VOLTAGE REGULATOR IC TC7S66FU Analog S/W IC KTX301E Q101 Dual switching TR Dual Switching TR KRX201U Q103 KRC824E Q107.414 2SK3475 Silicon N-Channel 1(Gate) MOS TYPE 2(Source) Amplifier 3(Drain) 2SK3476 Silicon N-Channel 1(Gate) MOS TYPE 2(Source) Amplifier 3(Drain) RD60HUF1...
  • Page 34 Maxon SM5102Radio KTB1367 1(BASE) 2(COLLECTOR) 3(EMITTER) U20.Q14 PNP Transistor KTA7808 1(EMITTER) 2(COLLECTOR) 3(BASE) KTA1663 Q23.47 PNP Epitaxial PlanarTransistor HDTMOS E-FET TR MTD20N06HDL...

Table of Contents

Save PDF