Tait TM8100 mobiles Service Manual Download Page 103

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TM8100/TM8200 Service Manual

103

November 2007

Part B – Servicing the Radio

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

4.1

Repair Levels, Accreditation, and Website Access . . . . . . . . . . . . . . . . . 107

4.2

Tools, Equipment and Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

4.3

Servicing Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

4.4

Setting up the Test Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

4.5

Replacing Board Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

4.6

Shielding Cans and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

4.7

SMT Repair Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

4.8

Computer-Controlled Test Mode (CCTM) . . . . . . . . . . . . . . . . . . . . . 123

4.9

Defining Frequency Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

4.10 Visual and Audible Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Disassembly and Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135

5.1

Removing and Mounting the Control Head. . . . . . . . . . . . . . . . . . . . . 136

5.2

Disassembling the Radio Body. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

5.3

Reassembling the Radio Body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

5.4

Disassembling and Reassembling the Control Head. . . . . . . . . . . . . . . . 147

Servicing Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .155

6.1

Initial Tasks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

6.2

Final Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

Power Supply Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169

Interface Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

Frequency Synthesizer Fault Finding . . . . . . . . . . . . . . . . . . . . . . . . .185

9.1

Initial Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

9.2

Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

9.3

Phase-locked Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198

9.4

Loop Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

9.5

Receive VCO and Related Circuitry (UHF Radios). . . . . . . . . . . . . . . 209

9.6

Transmit VCO and Related Circuitry (UHF and 800MHz Radios). . . . 218

9.7

VCO and Related Circuitry (VHF Radios) . . . . . . . . . . . . . . . . . . . . . 224

9.8

Power Supply for FCL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234

9.9

VCXO and TCXO Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237

9.10 Signals at TP501 and TP502 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

9.11 VCXO and CODEC Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

Summary of Contents for TM8100 mobiles

Page 1: ...TM8100 mobiles TM8200 mobiles Service Manual MMA 00005 05 Issue 5 November 2007...

Page 2: ...have any enquiries regarding this document or any comments suggestions and notifications of errors please contact Technical Support Updates of Manual and Equipment In the interests of improving the p...

Page 3: ...eiver Fault Finding 247 11 Transmitter Fault Finding 25W 267 12 Transmitter Fault Finding 25W 341 13 CODEC and Audio Fault Finding 399 14 Fault Finding of Control Head with Graphical Display 423 15 Fa...

Page 4: ...05 Ignition Sense Kit 579 31 TMAA04 06 Linking and Interface Cable 581 32 TMAA10 01 Desktop Microphone 589 33 TMAA10 02 Handset 593 34 TMAA10 03 and TMAA10 06 High Power Remote Speakers 597 35 TMAA10...

Page 5: ...ds are listed below the last two digits in the IPN represent the issue of the board The board information in this manual covers all production issue boards up to the issue listed below Main board A4 b...

Page 6: ...33 xx TM8100 TM8200 Main Board H5 H6 25W boards after IPN 220 01697 05 MMA 00069 xx TM8100 TM8200 Main Board K5 30 35W MMA 00020 xx TM8100 TM8200 Main Board B1 50W MMA 00021 xx TM8100 TM8200 Main Boar...

Page 7: ...and note The following paragraphs illustrate each type of alert and its associated symbol Warning This alert is used when there is a potential risk of death or serious injury Caution This alert is us...

Page 8: ...uency Modulation CCTM Computer Controlled Test Mode CODEC Coder Decoder CSO Customer Service Organisation CTCSS Continuous Tone Controlled Subaudible Signaling DAC Digital to Analog Converter DC Direc...

Page 9: ...Positive Negative Positive PSU Power Supply Unit PTT Press To Talk RISC Reduced Instruction Set Computing RSSI Received Signal Strength Indication SFE Software Feature Enabler SMA Sub Miniature Versio...

Page 10: ...10 TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 11: ...onnectors 38 2 4 Hardware and Software Architecture 47 2 5 Operation in Receive Mode 52 2 6 Operation in Transmit Mode 57 3 Circuit Descriptions 65 3 1 Transmitter Circuitry 67 3 2 Receiver Circuitry...

Page 12: ...12 TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 13: ...op remote monitoring and similar applications This manual includes the information required for servicing the radio and its accessories This section describes the different options available for frequ...

Page 14: ...vice Manual Tait Electronics Limited November 2007 Figure 1 2 TM8100 mobile radios rear view 25W radio TM8115 radio with 2 digit display control head TM8110 radio with 1 digit display control head TM8...

Page 15: ...by different main boards in the radio body The control heads are identical for all frequency bands 1 2 RF Output Power The radio bodies are available with 25W and 25W RF output power The two RF output...

Page 16: ...ation kit including a U bracket Installation of the radio is described in the user s guide or the installation guide Optional installation kits are remote control head kit for remote installation of t...

Page 17: ...apability 3 identifies the digital boards of the digital TM9100 product line c identifies the RF output power 2 25W 3 25W trigger base 4 30 to 59W 5 30 to 59W trigger base dd identifies the frequency...

Page 18: ...trol head two RJ45 connectors 0T Tait TM8252 31 RJ45 control head for multi body two RJ45 connectors RS485 0T 1T 2T Tait TM8200 Tait TM8200 termination resistor in Tait TM8200 termination resistor out...

Page 19: ...warning 1 6 Specifications For up to date specifications refer to the area on the TaitWorld website reserved for TM8100 and TM8200 products Figure 1 3 Labels of the TM8100 and TM8200 product lines Con...

Page 20: ...20 Introduction TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 21: ...l Design Overview The radio consists of the following main components control head B radio body C The control head B clips firmly to the front face of the radio body C where a seal E provides IP54 cla...

Page 22: ...ur screw bosses to attach the radio to the U bracket of the installation kit Internal Options Board Optional On the inside of the lid nine screw points are provided for mounting an internal options bo...

Page 23: ...vember 2007 Figure 2 2 Components of the radio body B cover G chassis C screw M4x16 x4 H auxiliary connector bung D lid assembly I screws M4x16 x2 E screw M3x10 x5 J seal F main board assembly 1 gap p...

Page 24: ...the leverage points for removing the control head from the radio body The sides of the chassis contain two of the four screw bosses to attach the radio to the U bracket of the installation kit For hea...

Page 25: ...he rear of the radio body Figure 2 3 Components of the main board assembly B M3x10 screw x3 J D range screwlock fastener x2 C 25W radios M2 2x10 PT screw x2 25W radios K30x8 PT screw x2 1 power connec...

Page 26: ...the auxiliary F power 1 and RF 1 connectors facing the rear of the radio are located on the bottom side of the main board The 25W radio has a black power connector 1 and the 25W radio has a white pow...

Page 27: ...assembly with self adhesive coating and can be replaced for rebranding purposes Three clips on the rear side of the front panel assembly snap onto the space frame to hold the keypads 1 and 1 the LCD...

Page 28: ...th to the microphone The hole is covered by the rubber seal to ensure that the control head remains sealed to IP54 standards For more information refer to TMAA02 07 Concealed Microphone on page 519 Sp...

Page 29: ...ge D control head loom assembly with female female adapter E 3 x 10 PT screw x4 F control head board G space frame seal x2 H short light pipe I long light pipe J space frame 1 speaker clamp 1 speaker...

Page 30: ...f the optional concealed microphone The side facing the front panel has the volume control potentiometer the microphone connector the indicator and backlight LEDs and the contacts for the keypads Cont...

Page 31: ...o model number is attached to the front panel assembly with self adhesive coating and can be replaced for rebranding purposes Six clips on the space frame G snap into corresponding locations on the in...

Page 32: ...ips into the six recesses inside the front panel assembly 1 The front side of the space frame holds the keypad with the four light pipes the LCD the speaker clamp1 and the speaker in place and at the...

Page 33: ...ead loom with female female adapter C control head options board optional D 3 x 8 PT screw x3 E control head board F elastomeric strip x2 G space frame H speaker clamp I speaker J short light pipe 1 l...

Page 34: ...e front panel with self adhesive coating and can be replaced for rebranding purposes The rear side of the front panel has four screw bosses to fasten the PCB bracket E Control Head Loom The control he...

Page 35: ...n 35 Tait Electronics Limited November 2007 Figure 2 7 Components of the RJ45 control head B control head board E PCB bracket C control head loom with female female adapter F front panel D 3 x 8 PT sc...

Page 36: ...rol Head Loom The programming connector at one end of the control head loom and a foam seal F are screwed to the front panel with a pair of lock nuts D When the programming connector is not in use the...

Page 37: ...d to both short and long key presses A short key press is less than one second and a long key press is more than one second Figure 2 9 User interfaces scroll keys on off key volume control microphone...

Page 38: ...n board and the internal connectors of the control head refer to the PCB information of the main boards and the control head board Figure 2 10 Connectors radio with graphical display control head Spea...

Page 39: ...November 2007 Figure 2 11 Connectors of the radio body 25W radio control head connector provision for external options connector provision for additional connector power connector auxiliary connector...

Page 40: ...ical display Figure 2 13 Connectors of the control head with 1 2 or 3 digit display front view rear view without adapter flange microphone connector control head connector front view microphone connec...

Page 41: ...connectors for the 25W and 25W radios Important The speaker load configuration is balanced the speaker output lines must not be connected to ground Connecting a speaker output line to ground will caus...

Page 42: ...sense input a Digital 3V3 CMOS 4 AUX_GPI3 General purpose digital input Programmable function With LK2 fitted GPI3 is a power sense input a Digital 3V3 CMOS 10 AUX_GPIO4 Programmable function and dir...

Page 43: ...rnal options connector pins and signals Pinout Pin Signal Description Signal type 1 13V8_SWa Switched 13V8 supply Supply is switched off when the Radio Body is switched off Power 2 AUD_TAP_OUT Program...

Page 44: ...log ground Ground 7 CH_RXD Asynchronous serial port Receive data Digital 3V3 CMOS 8 DGND Digital ground Ground 9 CH_ON_OFF Hardware power on software controlled power off input Active low Digital 10 V...

Page 45: ...nput from microphone Also carries hookswitch signal Digital 5 MIC_AUD Fist microphone audio input Analog 6 AGND Analog ground Analog ground 7 MIC_RXD Asynchronous serial port Receive data 3 3V CMOS 8...

Page 46: ...Signal type 1 PRG_RX_AUD Receive audio output Analog 2 PRG_TXD Asynchronous serial port Transmit data 3 3V CMOS 3 PRG_MIC_AUD Fist microphone audio input Analog 4 PRG_RXD Asynchronous serial port Rece...

Page 47: ...board has an internal options connector which allows internal options boards to access a variety of discrete and programmable signals For more information refer to Internal Options Connector on page...

Page 48: ...o Interface Digital Board RF Connector Power Connector Control Head Connector LPF 1 PIN Switch 1 Auxiliary Connector Internal Options Connector Main Board FPGA RISC Proc Serial Flash SRAM Flash Memory...

Page 49: ...software modules are stored on the digital board of the main board FPGA image which includes the software implemented RISC processor and the custom logic the custom logic executes additional digital...

Page 50: ...on the control head 3 Normal radio operation starts with the RISC processor executing the radio application code including application software the DSP executing the DSP code for processing of digita...

Page 51: ...ftware which is part of the radio and control head application software Software Shutdown On shutdown the programming and calibration data is stored in the database and power is removed from the radio...

Page 52: ...is illustrated in Figure 2 16 on page 53 For the K5 front end refer to These block diagrams show the hardware modules integrated with the software modules hardware transmitter receiver CODEC and audio...

Page 53: ...TM8100 TM8200 Service Manual Description 53 Tait Electronics Limited November 2007 Figure 2 16 Transceiver operation...

Page 54: ...nal frequency division of 2 so the second LO operates at 2 x IF1 64kHz The quadrature output from this mixer is fed to a pair of ADCs with high dynamic range where it is oversampled at 256kHz and fed...

Page 55: ...a and fed via a single synchronous serial port to the DSP The stream is demultiplexed and the demodulation data used as an input for further audio processing Noise Squelch The noise squelch process re...

Page 56: ...n in the order of 10dB relative to full scale in the receive path CODEC The combined audio and side tone signal is converted to analog form by a 16 bit DAC with integral anti alias filtering This is f...

Page 57: ...e transceiver is illustrated in Figure 2 16 on page 53 These block diagrams show the hardware modules integrated with the software modules hardware transmitter receiver CODEC and audio RISC processor...

Page 58: ...omatic Level Control The ALC follows and is used to effectively increase dynamic range by boosting the gain of the microphone pre amplifier under quiet conditions and reducing the gain under noisy aco...

Page 59: ...es Note that patents are pending for several aspects of the synthesizer design Operation of Control Loop The RF PLL is a conventional integer N type design with frequency resolution of 25kHz 30kHz for...

Page 60: ...ates a DC error signal A programmed offset is also added This error signal is converted to analog form and used to control the VCXO frequency and reduce the initial error Once settled the loop locks t...

Page 61: ...nstants in the loop filter As a result settling to within 1kHz of the final value occurs in under 4ms In order to meet noise performance requirements the loop parameters are then switched to reduce th...

Page 62: ...proximately 37dB of power gain The output of the frequency synthesizer is first buffered to reduce kick during power ramping The buffer output goes to a broad band exciter IC that produces approximate...

Page 63: ...eady state power for the 30 35W K5 band radios 10dBm to approximately 25dB below steady state power for the 25W radios Power Ramp Up The power ramp signal is supplied by a 13 bit DAC that is controlle...

Page 64: ...64 Description TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 65: ...oards The main board is divided into the following circuitry modules transmitter receiver frequency synthesizer including FCL CODEC and audio power supply interface digital board Figure 3 1 gives an o...

Page 66: ...io Interface Digital Board RF Connector Power Connector Control Head Connector LPF 1 PIN Switch 1 Auxiliary Connector Internal Options Connector Main Board FPGA RISC Proc Serial Flash SRAM Flash Memor...

Page 67: ...The exciter operates in full saturation thereby maintaining a constant output power independent of the varying input power level supplied by the synthesizer Power Amplifier The power amplifier compri...

Page 68: ...aper and Level Shifter Crowbar Shaping Filter Tempera ture Sensor Buffer Amplifier TX RX RF Thermal Coupling OR Gate Switch TX INH 9V0 TX 13V8 BATT DIG TX INH DIG SYN EN SYN LOCK SYN TX LO Power Suppl...

Page 69: ...to the gate of Q306 In this way the transmitter is protected against bad mismatches With the 30W 35W radio the power control loop processes the voltages from the forward and reverse power sensors in...

Page 70: ...h front end is used First Mixer The first mixer of all bands except K5 is a standard diode ring mixer with SMD surface mount device baluns and a quadruple SMD diode For the bands between 66 and 174MHz...

Page 71: ...RATURE DEMODULATOR BIAS NETWORK POWER SUPPLY CODEC AND AUDIO CIRCUITRY DIGITAL BOARD PLL TRANSMITTER FREQUENCY SYNTHESIZER MIXER RF SIGNAL TYPES ANALOGUE CLOCK DIGITAL ASYNCHRONOUS SERIAL DATA SYNCHRO...

Page 72: ...72 Circuit Descriptions TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 3 4 Block diagram of the receiver circuitry B1 H5 H6 bands after PCB issue 05 and other bands...

Page 73: ...nnector when an internal options board is fitted Automatic Gain Control The receiver has an AGC circuit to enable it to cover a large signal range Most of the circuit functions are implemented in the...

Page 74: ...D modem Tait High Speed Data It enables THSD to maintain residual BER of 10 4 The front end AGC is controlled by an algorithm which monitors the RSSI and configures the DAC to turn on the front end at...

Page 75: ...egulator IC provides good line regulation of the 9V supply and good load regulation Good regulation of the power supply line and load is essential for meeting the transient ACP requirements The regula...

Page 76: ...COs Some variants of the synthesizer use two VCOs one for receive and one for transmit Synthesizers with two VCOs share the same tuning signal Only one VCO is switched on at a time and so the PLL IC w...

Page 77: ...lifier PLL MOD VCO 2 VCO 1 Buffer Amplifiers and Coupler 5 V Switch TR Switch VCO UHF only 6V0 AGND 3V0 AN Power Supply CDC VCXO MOD SYN CDC FCL SYN CDC LFV CDC VCO MOD CODEC and Audio SYN TX LO SYN R...

Page 78: ...of which the loop filter is the main factor The loop filter is an integrator built around an operational amplifier The resistors and capacitors of the filter affect both the switching time and the sta...

Page 79: ...ss is implemented in hardware under software control in conjunction with use of the synthesized reference input The result is a transmit receive settling time of less than 4 5ms The switching time is...

Page 80: ...Circuit Operation The VCXO is mixed with the TCXO output to create a nominal difference or offset frequency of 12kHz SYN CDC FCL In A4 band radios there is additional circuitry and the VCXO is mixed w...

Page 81: ...the receiver s second IF stage The analog signals are differential and biased at 1 2V nominally The digital section communicates with this CODEC via a two wire synchronous serial interface BSDO and B...

Page 82: ...CDC FCL Digital Board AGND 13V8 BATT 2V5 CDC 9V0 3V3 3V0 AN CDC RX AUD AUD ITF SPK AUD ITF SPK ITF RX BEEP IN ITF CH MIC AUD ITF AUX MIC AUD ITF VOL WIP DC CDC AUD TAP OUT CDC RSSI ITF AUD TAP IN CDC2...

Page 83: ...ty of the amplifier at high frequencies When operational the output bias voltage for IC202 is approximately half the radio supply voltage When not operational the output becomes high impedance Control...

Page 84: ...filter formed by IC201 pins 1 to 3 R219 R220 R221 R224 C206 C208 and C210 is a third order Butterworth type with a cut frequency of approximately 12kHz The output of the low pass filter is amplified b...

Page 85: ...to the digital section which in turn provides the watchdog signal DIG WD KICK required by the supervisory circuit Internal Power Supplies There are eight internal power supplies one SMPS 3V3 four line...

Page 86: ...Switch 3V3 2V5 Regulator 3 V Rx Switch PSU Super visor 13V8 Switch Reverse Polarity Protection 13V8 BATT 9V0 TX 9V0 3V0 AN 13V8 BATT 9V0 3V0 AN 3V3 2V5 CDC 3V0 AN 3V0 RX DIG RX EN DIG TX EN DIG SLP EN...

Page 87: ...on desired Figure 3 10 shows a block diagram of the hardware links LK1 to LK4 The radio can be programmed to be either on or to return to its previous state when the power sense signal is removed For...

Page 88: ...off AUX GPI3 2 6V high active ignition sense tolerant to 3 3V 5V and 12V LK1 out Input line must be active highb LK4 out IOP GPIO7 can be used as GPIO internal power sense LK1 out IOP GPIO7 0 7V off...

Page 89: ...Link LK4 is required to connect the line to the power up circuitry This line is active high it is on when the level exceeds 2 6V and off when the level falls below 0 7V the line tolerates maximum inp...

Page 90: ...if the primary power source voltage is outside the radio s operating range The combined switched current drawn by the internal options connector the auxiliary connector and the control head connector...

Page 91: ...lue is approximately 18mA the inverse of the value of R761 The output configuration is open collector with a pull up to 3 3V by default Pull up options to 5V and 13 8V are also available On AUX GPIO4...

Page 92: ...3V3 AGND DGND SPK SPK VOL WIP DC CH MIC AUD RX AUD CH ON OFF CH RXD CH TXD CH PTT CH GPIO1 CH SPI DI CH SPI DO CH SPI CLK CH LE RX AUD RX BEEP IN AUD TAP OUT AUD TAP IN AUX MIC AUD RSSI 13V8 SW IOP G...

Page 93: ...static discharge protection is provided by a 470pF capacitor and by clamping diodes to ground and to 13 8V For example on AUX GPIO4 this consists of D713 and C725 The lines IOP GPIO1 to IOP GPIO7 are...

Page 94: ...ND DIG CH SPI CLK DIG CH SPI DO ITF CH SPI DI DIG CH LE ITF CH GPI1 DIG CH GPO1 ITF CH PTT ITF CH HOOK ITF ON OFF ITF IOP GPIO1 7 DIG IOP TXD ITF IOP RXD ITF AUX GPI1 7 DIG AUX GPO4 7 DIG AUX TXD ITF...

Page 95: ...ial EEPROM DGND AGND DIG CH SPI CLK DIG CH SPI DO ITF CH SPI DI DIG CH LE ITF CH GPI1 DIG CH GPO1 ITF CH PTT ITF CH HOOK ITF ON OFF ITF IOP GPIO1 7 DIG IOP TXD ITF IOP RXD ITF AUX GPI1 7 DIG AUX GPO4...

Page 96: ...for function keys F1 and F4 keypad backlighting LEDs speaker Connectors The control head board includes the circuitry for the following connectors microphone connector RJ45 socket control head connec...

Page 97: ...NC UART JTAG 3V3 Soldering Pads AGND DGND Concealed Microphone Speaker MIC MIC AGND Power Supply 3V3 1V5 1V5 3V3 13V8 CH RXD CH TXD CH GPIO1 CH PTT CH ON OFF 13V8 SPK SPK SPK SPK Speaker Leads Microph...

Page 98: ...ine each from the FPGA which switch two transistors on MOSFET Q102 A temperature signal from the LCD module is converted to a digital signal by an analog digital converter U601 and processed by the FP...

Page 99: ...oncealed microphone two control head options connectors for optional circuit board Protection circuitry is provided for the microphone connector For pinouts of the control head connector and the micro...

Page 100: ...LK 3V3 13V8 SW CH ON OFF CH SPI DI CH LE CH SPI CLK 3V3 AGND DGND Contact made when key pressed Contact made when key pressed Speaker Leads SPK SPK 13V8 SW MIC AUD IN P1 MIC AUD OUT DGND AGND VOL WIP...

Page 101: ...e been clocked in the latch line is driven low On this falling edge all the outputs LEDs and LCD segments are driven to their new state When the latch line is driven high the state of each key is latc...

Page 102: ...nouts of the connectors refer to Connectors on page 38 Basic Circuitry The signals of the control head connector are directly connected to the telemetry connector The POWER ON OFF LED is supplied by t...

Page 103: ...5 1 Removing and Mounting the Control Head 136 5 2 Disassembling the Radio Body 137 5 3 Reassembling the Radio Body 143 5 4 Disassembling and Reassembling the Control Head 147 6 Servicing Procedures...

Page 104: ...wer 350 12 3 Biasing of PA Driver and PAs 360 12 4 RF Signal Path 379 13 CODEC and Audio Fault Finding 399 13 1 Power Supplies 400 13 2 Faulty Speaker Audio 402 13 3 No Speaker Audio at Auxiliary Conn...

Page 105: ...Head with 1 2 or 3 Digit Display 447 15 1 Display Faulty but not LEDs 450 15 2 Some LEDs Faulty 451 15 3 All LEDs Faulty 452 15 4 Display and All LEDs Faulty 452 15 5 Some but not All Keys Faulty 453...

Page 106: ...106 TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 107: ...ir Levels This manual covers level 1 and level 2 repairs of the radios Important The circuit boards in the radio are complex and must be serviced only by an Accredited Service Centre ASC See Accredita...

Page 108: ...epairs on the radios whether the radio is under warranty or not If your service centre would like to apply for Accredited Service Centre ASC status please contact Tait Technical Support at the address...

Page 109: ...sses to the Tait FOCUS call logging database Technical Support resolves any issue raised and informs the customer or service centre of the outcome All issues and solutions can be seen by all service c...

Page 110: ...it should be noted that a hot air tool affords little control Even in skilled hands use of a hot air tool to remove cans will result in rapid uncontrolled rises in the temperature of components under...

Page 111: ...anual You can generally order only the latest issue of a manual Table 4 1 Contents of service kit TMAA21 00 Product code Item TPA SV 006 Cable serial PC to RJ12 plug TMAA20 02 Cable RJ45 socket to DB9...

Page 112: ...o satisfy the anti static requirements specified below In addition use a clear area of the bench when disassembling and re assembling the radio Compliance Issues Note The radio is designed to satisfy...

Page 113: ...anti static measures when storing shipping or carrying a circuit board or its components To carry store or ship a circuit board use an anti static bag To carry store or ship a component use foil an a...

Page 114: ...re the main board assembly in the chassis with the two external screws and one of the internal screws The heat transfer block must be secured to the main board The lid of the radio body may be left of...

Page 115: ...espectively the switches of the test unit must be set as described below When programming or calibrating radios the switches have no effect although it is good practice to set the MODE switch to RX Se...

Page 116: ...udio SINAD connector BNC transmit audio connector BNC computer connector RJ12 serial port DB9 speaker connector banana plugs AC input BNC audio monitor out BNC AUDIO IN HI BNC AUDIO OUT BNC RF in out...

Page 117: ...a printed board assembly such as a control board quote the relevant product code see Product Codes on page 17 To replace a component on a PCB however use the IPN on the PCB to locate the correct PCB...

Page 118: ...y important for tolerances to be the same When the replacement component arrives verify specifications again before installing the part Obtain Replacement Component To determine whether the required c...

Page 119: ...the main board assembly are identified in Figure 4 3 and Figure 4 4 The figures also show the locations of the connectors on the board Figure 4 3 Shielding cans and connectors top side of main board a...

Page 120: ...hnicians should refer to the documentation supplied with the tool for the correct procedures If the tool is not available a hot air tool may be used instead However technicians require training in the...

Page 121: ...ndard techniques and these are discussed below Another issue of concern is the procedure for removing and installing cans A discussion of the issue concludes this section Non standard Procedures Do no...

Page 122: ...imited November 2007 Figure 4 5 Locations of the capacitors C548 and C565 and the inductors L601 and L602 top side VHF board UHF board similar Note that other components may be fitted for C548 such as...

Page 123: ...nary first select the settings for the communications port as follows 1 Open the terminal program In the case of HyperTerminal click Start Programs Accessories Communications HyperTerminal 2 In the te...

Page 124: ...he speaker 74 x where x is the required state 0 stand by 1 on 2 mute None 110 Audio volume Sets the level of the audio volume 110 x where x defines the required level any integer from 0 to 255 None 13...

Page 125: ...e character identifier and y is an eight digit version number 133 Hardware version Reads the product code of the radio body and the hardware version number 133 x y where x is the product code and y is...

Page 126: ...essage with results of calibration attempt 334 Synthesizer power Switches the frequency synthesizer on or off via the DIG SYN EN line 334 x where x is the required state 0 off 1 on None 335 Synthesize...

Page 127: ...er from 0 to 1023 114 x to set value where x is the required power setting an integer from 0 to 1023 None 304 Driver bias Sets or reads the clamp current at the gate of the PA driver 304 to read value...

Page 128: ...for the first PA 331 to read value x where x is the DAC value of the bias voltage an integer from 0 to 255 331 x to set value where x is the DAC value of the required bias voltage any integer from 0 t...

Page 129: ...the elements of the display on or off 1006 x where x is the required state 0 off 1 on None 1007 LCD temperature sensor Reads the output of the LCD temperature sensor 1007 x where x corresponds to the...

Page 130: ...down and up again and place the radio in CCTM again C05 The radio has not responded within the specified time Re enter the CCTM command X04 The DSP is not responding Check the DSP pin connections If t...

Page 131: ...the frequency band mean that the K5 frequency band may be further divided into 700MHz and 800MHz The frequency bands for TM8100 TM8200 radios are listed in Table 4 10 The relevant frequencies for the...

Page 132: ...able 6 1 on page 160 Audible indications are provided in the form of different tones emitted from the speaker The information conveyed by the tones is given in Table 4 12 on page 133 Table 4 11 Visual...

Page 133: ...accepted and radio is ready to use 3 After radio has been stunned Radio has been revived and is ready to use Two low pitched beeps While powered up Temperature of radio is high Two high pitched beeps...

Page 134: ...134 General Information TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 135: ...body disassemble and reassemble the control heads General Important Before disassembling the radio disconnect the radio from any test equipment or power supply Disassemble only as much as necessary t...

Page 136: ...portant When inserting the flat bladed screwdriver take care not to damage the control head seal 3 At either of the lever points insert a 3 16 inch 5mm flat bladed screwdriver between the control head...

Page 137: ...ructions refer to Reassembling the Radio Body on page 143 Removing the Cover 1 At the upper edge of the lower screw bosses on both sides of the radio body insert a 1 8 inch 3mm flat bladed screwdriver...

Page 138: ...using one of the tabs located at the bottom of the seal preferably by hand If necessary lift up the tap using the blade of a small flat bladed screwdriver Do not damage the seal with the screwdriver 3...

Page 139: ...of the radio body B cover G chassis C screw M4x16 x4 H auxiliary connector bung D lid assembly I screws M4x16 x2 E screw M3x10 x5 J RF connector seal F main board assembly 1 gap pad 25W radio only Tor...

Page 140: ...crews b securing the main board 1 to the heat transfer block F Note Make sure not to touch the thermal paste on the heat transfer block and the underside side of the main board If the thermal paste is...

Page 141: ...30x8 PT screw x2 I power connector seal J power connector 1 gap pad 25W radio only D auxiliary connector 1 RF connector nut E inner foam D range seal 1 RF connector lock washer F heat transfer block 1...

Page 142: ...r cap c if fitted Undo the two D range screwlock fasteners d 2 Undo up to nine screws h and remove the options board G from the lid assembly E 3 If an external options connector is fitted a foam seal...

Page 143: ...3lb in 0 34N m 2 If the outer foam seal E or the inner foam D range seal G have been removed fit new seals to the heat transfer block F 3 With the 25W radio the rectangular gap pad 1 must be replaced...

Page 144: ...to Figure 5 6 on page 143 5 Place the main board 1 in position on the heat transfer block F and push them together to spread the thermal paste Important You must observe the following order of assemb...

Page 145: ...L shaped ridge of the chassis Peel off the transparent film on other of the gap pad 2 If the thermal paste on the heat transfer block or the underside of the main board has been contaminated new therm...

Page 146: ...F connector seal j Ensure that the seal is properly seated around its entire periphery 9 If an auxiliary connector bung h was fitted fit the bung Closing the Radio Body The circled number in this sect...

Page 147: ...flange C 3 Disconnect the control head loom D 4 If an optional circuit board is fitted unplug it from the control head board F refer to Figure 5 8 5 Note whether the speaker is connected or disconnec...

Page 148: ...he spaceframe and remove it along with the two seals G Check the seals G and replace them if necessary 11 Remove the speaker 1 and speaker clamp 1 Important When fitting the speaker and the speaker cl...

Page 149: ...ly with female female adapter E 3 x 10 PT screw x4 F control head board G space frame seal x2 H short light pipe I long light pipe J space frame 1 speaker clamp 1 speaker 1 LCD assembly including LCD...

Page 150: ...cted or disconnected If it is connected disconnect the speaker cable from the speaker connector of the control head board refer to Figure 5 10 Note that the radio must be returned to the customer in i...

Page 151: ...ng the space frame G make sure that the clips labelled B to G fully snap into the front panel assembly If necessary use a flat bladed screwdriver to push down the clips until they snap into place Figu...

Page 152: ...lacing the LCD carefully remove the protective plastic film from the LCD Take care not to scratch the soft polarizer material on the top side of the LCD Important When fitting the speaker and the spea...

Page 153: ...on refer to the items in Figure 5 12 1 Release the clip of the PCB bracket E and remove the control head board B 2 Disconnect the control head loom C from the control head board B 3 Use a Torx T10 scr...

Page 154: ...o screws B and remove the cover seal Note that the radio must be returned to the customer in its original configuration 2 Note whether an options board not shown is fitted inside the control head If a...

Page 155: ...on file checking the user interface checking any error messages The following tasks only need to be carried out if they relate to the fault reported checking the transmit and transmit audio functions...

Page 156: ...fit the upper part of the seal and then press down around the sides of the seal to the bottom Ensure that the seal is properly seated around its entire periphery Check for Additional Damage Also check...

Page 157: ...0 2 If the radio powers up successfully go to Task 4 If it does not go to Step 3 3 Check the fuses cables and the power supply 4 Check whether the control head loom the control head or the radio body...

Page 158: ...ly Refer to the troubleshooting section of the online help 5 If the programming file can be read now save a copy on the test PC and go to Task 5 If not go to Step 6 6 Check whether the control head lo...

Page 159: ...start up sequence the LEDs light up red briefly the speaker gives two short beeps LCD and keypad backlighting activates the LCD displays a power up message then a channel number or an error message 3...

Page 160: ...E0001 Unknown Turn the radio off and then back on Error E0002 Unknown Continue with servicing tasks to locate the problem Error E0003 Corrupt FW Re download the radio s firmware Error E0008 System err...

Page 161: ...6 Use CCTM command 326 1 to set the power level to very low 7 Connect a power meter and measure the transmit power 8 If the carrier power is correct go to Step 10 If the carrier power is not correct...

Page 162: ...frequency set to the top of the band 5 Feed a signal without modulation on the receive channel at 47dBm Check for maximum RSSI using the indicator on the radio display graphical display the green sta...

Page 163: ...assembly This section describes the steps after completion of the fault diagnosis 1 Use the programming and calibration applications to load the pro gramming and calibration files read or set up in In...

Page 164: ...ing of the same software features as in the original assembly Proceed as follows 1 If it was possible to read the software features in Obtain the Details of the Software Feature Enabler SFE on page 15...

Page 165: ...m that it is fully functional again The recommended tests are listed in Table 6 2 to Table 6 4 The calibration application can be used for many of these tests It is good practice to record the test re...

Page 166: ...d H5 band H7 band K5 band Very low B1 band G2 band H5 band H7 band K5 band 46 3W to 58 3W 37 1W to 46 7W 37 1W to 46 7W 37 1W to 46 7W 26 7W to 33 7W 23 2W to 29 2W 18 5W to 23 3W 18 5W to 23 3W 18 5W...

Page 167: ...ttenuation switched in when the test unit PORTABLE MOBILE switch is set to MOBILE Refer to TOPA SV 024 Test Unit on page 613 for details Table 6 4 Final tests of general radio functions Test Descripti...

Page 168: ...168 Servicing Procedures TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 169: ...Task 6 check provision of external power Types of Fault Which of the above tasks are applicable depends on the nature of the fault Radio fails to power up The radio fails to power up immediately when...

Page 170: ...sks on page 155 If it does not go to Step 5 5 Check the digital power up signal at pin 5 of IC602 see Figure 7 1 the signal is active high namely when the voltage exceeds 2 0V DC Measure the voltage a...

Page 171: ...ual Power Supply Fault Finding 171 Tait Electronics Limited November 2007 Figure 7 1 Important components of the power supply circuitry bottom side including 3 3V regulator IC602 pin 7 pin 5 C603 C618...

Page 172: ...ecting the supply or preventing the radio from powering up While keeping the ON OFF key depressed measure the supply at the 3V3 test point near the corner of the digital board see Figure 7 2 The volta...

Page 173: ...6 If the fault remains the repair failed replace the board and go to Final Tasks on page 163 6 Reconnect the 13 8V supply Press the ON OFF key If the radio powers up return to Initial Tasks on page 1...

Page 174: ...ine of the relevant regulator IC Repair any fault 2 If the regulator IC has been removed resolder it in position 3 Reconnect the 13 8 V supply and press the ON OFF key If the radio powers up or the co...

Page 175: ...ons power sense IOP GPIO7 auxiliary power sense AUX GPI3 emergency power sense AUX GPI2 4 For the first two lines confirm that the Power Sense Ignition option has been selected in the Action field and...

Page 176: ...ctor PL100 Repair any fault and go to Step 5 2 For the auxiliary power sense option the link LK2 should be inserted see Figure 7 2 Connect 3 3V DC more than 2 6V to be precise from the power supply to...

Page 177: ...Figure 7 1 is high Remove the 3 3V supply and ground the IOP GPIO7 line to be precise the voltage on the line should be less than 0 6V If the power up signal is now low conclude with Step 5 If it is...

Page 178: ...xternal power to any of these connectors first confirm the link settings required and then carry out the following procedure 1 With the radio powered up confirm that 13 8V DC is present at pin 3 of IC...

Page 179: ...ese enclosures In Figure 8 1 which shows part of the internal options connector as an example IOP GPIO7 is a connector signal and ITF IOP GPIO7 is an internal signal Types of Signals The connector and...

Page 180: ...Service Manual Tait Electronics Limited November 2007 Figure 8 2 Components of the interface circuitry top side near the CDC TOP and IF TOP cans Figure 8 3 Components of the interface circuitry top s...

Page 181: ...ild mechanical shock or vibration or to a temperature change This might expose any intermittent contact in which case go to Step 3 3 If the expected signal is not present check whether the expected in...

Page 182: ...182 Interface Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 8 4 Components of the interface circuitry bottom side...

Page 183: ...f they are not go to Step 8 7 The fault lies with the radio s internal circuitry If the power supply circuitry or the CODEC and audio circuitry is suspect continue with the fault diagnosis as in Power...

Page 184: ...184 Interface Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 185: ...ge 123 Use an oscilloscope with a x10 probe for all voltage measurements required The signals should appear stable and clean Consider any noise or unidentified oscillations as evidence of a fault requ...

Page 186: ...he checks of Task 1 and Task 2 respectively are required In the last case there are several symptoms these are listed below Frequency Bands Where test procedures or figures differ according to the fre...

Page 187: ...sizer To determine which is faulty calibrate the VCXO and the transmit VCO as described below Always calibrate the former first because the latter depends on the former 1 Place the radio in CCTM 2 Ent...

Page 188: ...receive mode Go to Power Supplies on page 189 Task 2 Lock Status A lock error indicates that the frequency synthesizer FCL or second LO is out of lock To determine which is faulty check the lock statu...

Page 189: ...sk 4 6V DC supply from 6V regulator in PSU module 6V0 Task 5 5V DC supply following filtering of 6V supply 5V DEC Task 6 3V DC supply from 3V regulator in PSU module 3V0 AN The measurement points for...

Page 190: ...ber 2007 Figure 9 2 Synthesizer circuitry under the SYN TOP can and the 6V regulator IC606 top side VHF bands UHF bands Measurement point on L506 pin not used Pin 5 5 pin device Q508 Q507 Q506 Q508 Q5...

Page 191: ...side of the PCB Measure the VCL SUPPLY voltage on the via beside C5050 4 If the SMPS output is correct go to Task 4 If it is not go to Step 5 5 Check the 9V supply at Q500 and R533 see Figure 9 3 6 I...

Page 192: ...n 4 of IC606 see Figure 9 2 2 If the voltage is correct go to Task 5 If it is not measure the 9V input at pin 5 of IC606 see Figure 9 2 3 If the voltage is correct go to Step 4 If it is not the 9V reg...

Page 193: ...vice Manual Frequency Synthesizer Fault Finding 193 Tait Electronics Limited November 2007 Figure 9 3 Synthesizer circuitry under the FCL TOP can top side A4 band PAD TOP can top side PCB VCXO BOT can...

Page 194: ...194 Frequency Synthesizer Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 9 4 Synthesizer circuitry under the SYN BOT can bottom side IC505 IC504 Q505 Q511...

Page 195: ...5 and the 5V and transmit receive switches based on Q506 Q507 and Q508 pins 1 2 6 see Figure 9 2 Replace any suspect transistor Conclude with Step 6 5 For VHF radios check for faults in the C multipli...

Page 196: ...cy Synthesizer Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 9 5 Transmit receive switch components VHF bands 25W versions shown Q5003 Q5002 Q5003 Q5002 SYN...

Page 197: ...heck the supply at L506 see Figure 9 2 The measurement point is the via shown in the figure 4 If the voltage is correct go to Step 5 If it is not the 3V regulator IC603 is suspect go to Task 3 of Powe...

Page 198: ...PLL inputs and output are summarized in Figure 9 6 Task 7 Supply for Charge Pump First check the supply for the charge pump of the PLL 1 Measure the supply for the charge pump at pin 16 of IC503 see F...

Page 199: ...ILTER AT C565 TP503 JUNCTION OF R566 AND R570 TP503 JUNCTION OF R566 AND R570 SIGNAL TYPES RF ANALOG CLOCK DIGITAL PLL LOOP FILTER AND SUMMER FILTERING OF SUPPLY FOR PLL AND LOOP FILTER FCL VCO CIRCUI...

Page 200: ...re 9 2 2 If the signal is correct go to Task 9 If it is not go to Step 3 3 Check IC503 see Figure 9 2 Replace IC503 if it is suspect 4 Determine if the fault has been removed If it has go to Final Tas...

Page 201: ...nd the digital board 6 Enter the CCTM command 334 1 to switch on the synthesizer and measure the voltage at the via between R104 see Figure 9 7 and the digital board 7 If the voltages measured in Step...

Page 202: ...p 2 is correct go to Loop Filter on page 204 If it is not go to Step 4 4 Check for continuity between pin 14 of IC503 and the digital board via R568 see Figure 9 2 and L102 see Figure 9 7 5 If there i...

Page 203: ...t Finding 203 Tait Electronics Limited November 2007 Figure 9 8 Synthesizer circuitry under the SYN TOP can top side VHF bands UHF bands Q512 Q512 Junction of C541 and R547 Junction of C541 and R547 T...

Page 204: ...R542 see Figure 9 8 3 Using an oscilloscope proceed as follows to observe the voltage at C565 before and after grounding the junction between C541 and R547 see Figure 9 8 While holding the oscilloscop...

Page 205: ...ystem error or a transmit fault the transmit VCO is suspect go to Transmit VCO and Related Circuitry UHF and 800MHz Radios on page 218 Task 13 Check Reference Voltage If the loop filter circuitry is s...

Page 206: ...eck IC504 IC505 Q511 see Figure 9 4 and associated components 4 Check the following components see Figure 9 8 Note On early issue boards C548 is fitted instead of these components 5 If a fault is foun...

Page 207: ...digital board see Figure 9 7 The result should be 9 Enter the CCTM command 389 0 to set the mode to slow 10 Measure the voltage at the via between R105 and the digital board see Figure 9 7 The result...

Page 208: ...nstead of these components 5 Remove R566 and R570 see Figure 9 8 which provide a modulation path to the VCO s 6 Repeat the measurement of Step 1 7 If the correct result is now obtained go to Step 8 If...

Page 209: ...for the different UHF frequency bands are defined in Table 9 3 There are six aspects Task 17 check receive VCO Task 18 repair PLL feedback Task 19 repair receive VCO Task 20 check switching to receiv...

Page 210: ...10 Frequency Synthesizer Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 9 10 Measurement points for the VCO and related circuitry in UHF radios except K5 band...

Page 211: ...ncy equal to the maximum given in Table 9 3 3 If the receive frequency measured in Step 2 is correct go to Step 4 If it is incorrect go to Task 19 but if no frequency is detected go to Task 20 4 Proce...

Page 212: ...t Electronics Limited November 2007 Figure 9 11 Synthesizer circuitry under the SYN TOP and VCO TOP cans UHF radio top side Tx port Junction of C541 and R547 Rx port Q507 Q506 Q508 UHF band shown VHF...

Page 213: ...the board and go to Final Tasks on page 163 Task 19 Repair Receive VCO If either or both the minimum and maximum receive frequencies are incorrect the receive VCO circuitry is faulty 1 For all bands...

Page 214: ...equency Synthesizer Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 9 12 Synthesizer circuitry under the VCO BOT bottom side Q5001 UHF band shown VHF similar K...

Page 215: ...9 11 2 Enter the CCTM command 335 0 to switch on the supply to the receive VCO 3 Measure the voltage at the first collector pin 3 of Q506 see Figure 9 11 The voltage should be 4 Enter the CCTM command...

Page 216: ...voltage at the via between R103 and the digital board 6 If the voltages measured in Step 4 and Step 5 are correct go to Step 7 If they are not the digital board is faulty resolder R103 in position se...

Page 217: ...ransmit mode Enter the CCTM command 335 1 to set the transmit receive switch on 5 Again measure the voltages of Q5100 and IC5100 6 If the voltages are correct the receive VCO is suspect go to Step 7 I...

Page 218: ...related circuitry The minimum and maximum transmit frequencies for the different UHF frequency bands are defined in Table 9 4 There are five aspects Task 23 check transmit VCO Task 24 repair PLL feed...

Page 219: ...to the maximum given in Table 9 4 3 If the transmit frequency measured in Step 2 is correct go to Step 4 If it is incorrect go to Task 25 If no frequency is detected go to Task 26 4 Proceed as follows...

Page 220: ...inal Tasks on page 163 Task 25 Repair Transmit VCO If either or both the minimum and maximum transmit frequencies are incorrect the transmit VCO circuitry is faulty 1 Remove the VCO TOP can 2 Check th...

Page 221: ...9 11 2 Enter the CCTM command 335 1 to switch on the supply to the transmit VCO 3 Measure the voltage at the second collector pin 6 of Q506 see Figure 9 11 The voltage should be 4 Enter the CCTM comma...

Page 222: ...go to Step 7 If they are not the transmit buffer amplifier is suspect go to Step 9 7 Remove the VCO TOP can 8 Check the transmit VCO circuitry based on Q510 see Figure 9 11 Conclude with Step 10 9 Che...

Page 223: ...r in transmit mode Enter the CCTM command 335 1 to set the transmit receive switch on 11 Measure the voltage at the base of Q510 12 If the voltages are correct the transmit VCO is suspect Go to Step 1...

Page 224: ...HF frequency bands are defined in Table 9 5 There are six aspects Task 28 check VCO Task 29 repair PLL feedback Task 30 repair VCO Task 31 check transmit receive switch Task 32 repair switching networ...

Page 225: ...N 2 OF D5004 PIN 2 OF D5004 TX PORT TX PORT RX PORT RX PORT SIGNAL TYPES RF ANALOG CLOCK DIGITAL PLL LOOP FILTER AND SUMMER FILTERING OF SUPPLY FOR VCO CIRCUITRY FREQUENCY SYNTHESIZER PLL FEEDBACK VCO...

Page 226: ...the maximum given in Table 9 5 3 If the maximum frequency measured in Step 2 is correct go to Step 4 If it is incorrect go to Task 30 but if no frequency at all is detected go to Task 31 4 Enter the...

Page 227: ...Service Manual Frequency Synthesizer Fault Finding 227 Tait Electronics Limited November 2007 Figure 9 14 Synthesizer circuitry under the SYN TOP can VHF radios top side Tx port Junction of C541 and...

Page 228: ...then the PLL feedback is suspect 1 Resolder R542 in position see Figure 9 14 2 Remove the VCO BOT can 3 Replace the components L510 see Figure 9 15 and IC503 see Figure 9 14 Note On A4 band radios the...

Page 229: ...equency Synthesizer Fault Finding 229 Tait Electronics Limited November 2007 Figure 9 15 Synthesizer circuitry under the VCO BOT can VHF radios Q5003 Q5002 L510 Q5001 D5004 Q5000 Q5003 L5010 SYN TOP A...

Page 230: ...e Figure 9 15 3 If a fault is found repair it and go to Step 4 If no fault is found go to Step 7 4 Repeat Step 1 and Step 2 of Task 28 to measure the maximum VCO frequency 5 Repeat Step 4 and Step 5 o...

Page 231: ...voltage at pin 2 of D5004 7 If the voltages measured in Step 4 and Step 6 are correct go to Step 8 If they are not the switching network is suspect go to Task 32 8 Enter the CCTM command 335 1 to swi...

Page 232: ...ge at the via between R103 and the digital board 6 If the voltages measured in Step 4 and Step 5 are correct go to Step 7 If they are not the digital board is faulty resolder R103 in position see Figu...

Page 233: ...see Figure 9 15 Some RF noise might be observed 3 Measure the voltage at pin 1 of Q5001 see Figure 9 15 4 If the voltages measured in Step 2 and Step 3 are not correct go to Step 5 If they are check...

Page 234: ...ault with the reference frequency input from the FCL to the PLL will imply that the FCL is suspect Fault diagnosis of the FCL is divided into four stages check power supply check VCXO and TCXO outputs...

Page 235: ...INTERFACE CIRCUITRY RECEIVER FCL CIRCUITRY 3V0 AN SUPPLY C536 R541 VCXO OUTPUT AT C536 VCXO OUTPUT AT C536 PLL SYN RX OSC C510 TP504 FEEDBACK SIGNAL SYN DIG FREF TCXO OUTPUT VCXO OUTPUT AT R522 PIN 1...

Page 236: ...board from the chassis and place the radio in CCTM 2 Measure the supply 3V0 AN at the via shown in Figure 9 17 The via is adjacent to the CDC TOP can 3 If the voltage is correct go to VCXO and TCXO Ou...

Page 237: ...The VCXO circuitry under the VCXO BOT can is faulty Remove the VCXO BOT can 4 Locate and repair the fault in the VCXO Q501 Q503 XL501 and associated components see Figure 9 19 5 Confirm the removal o...

Page 238: ...nics Limited November 2007 Figure 9 18 FCL circuitry under and adjacent the FCL TOP can Via for measuring VCXO output Position R527 for Tasks 38 and 39 FCL _ TOP IC506 L501 Q504 IC509 R520 R510 R527 R...

Page 239: ...o to Signals at TP501 and TP502 on page 240 If it is not go to Step 3 3 The TCXO circuitry under the CDC TOP can is faulty Remove the CDC TOP can 4 Locate and repair the fault in the TCXO XL500 and as...

Page 240: ...he signal is SYN CDC FCL and should be 2 If the signal is correct go to Task 38 If it is not go to Step 3 3 The mixer or LPF circuitry under the FCL TOP can is faulty Remove the FCL TOP can 4 Locate t...

Page 241: ...m can be checked at the via adjacent to C518 4 If the waveform is correct go to Step 5 If it is not there is a fault in the modulator buffer amplifier IC502 pins 1 to 3 and associated components see F...

Page 242: ...e fault 4 Repair the circuitry Note that the TCXO input to the mixer see Figure 9 18 should be Also the VCXO input to the mixer see Figure 9 18 although noisy and difficult to measure should be 5 Conf...

Page 243: ...cans 8 Use the oscilloscope probe to check the difference frequency at the TP502 test point see Figure 9 18 The signal is SYN CDC FCL and should be 9 If the signal is correct the fault has been remove...

Page 244: ...ck status 3 Enter the CCTM command 393 1 1900 Again measure the voltage level at the TP501 test point 4 Enter the CCTM command 72 and note the lock status 5 If the above voltage levels are not correct...

Page 245: ...signals are missing check the connections between IC205 and the digital board see Figure 9 17 5 If there are faults such as open circuits in the connections repair the circuitry and repeat Task 40 If...

Page 246: ...246 Frequency Synthesizer Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 247: ...Computer Controlled Test Mode CCTM on page 123 Frequency Bands Where test procedures or figures differ according to the frequency band of the radio the frequency band is given in brackets The frequen...

Page 248: ...fault 1 Input an RF signal not necessarily modulated of 90 dBm or 84 dBm with a trigger base radio at the RF connector 2 Enter the CCTM command 378 to measure the receiver output level 3 Note the val...

Page 249: ...M8200 Service Manual Receiver Fault Finding 249 Tait Electronics Limited November 2007 Figure 10 1 Receiver circuitry under the IF TOP can top side Q404 UHF Measurement point VHF Q404 Measurement poin...

Page 250: ...d 3V0 RX for the receiver circuitry 1 Remove the board from the chassis 2 Check for 3 0V DC 3V0 AN at the TP601 test point near the LO2 BOT can see Figure 10 2 3 If the voltage is correct go to Step 4...

Page 251: ...ceiver Fault Finding 251 Tait Electronics Limited November 2007 Figure 10 2 Receiver circuitry under the LO2 BOT can UHF shown Figure 10 3 Receiver circuitry under the FE TOP can top side all bands ex...

Page 252: ...in 24 of IC400 under the IF TOP can see Figure 10 1 2 If DIG RX EN is active go to Task 4 If it is not go to Step 3 3 Check the signal continuity from the digital board to the receiver Repair any faul...

Page 253: ...ailed go to Task 7 Task 5 Check Biasing of IF Amplifier If the lock status is normal check the biasing of the IF amplifier 1 Remove the IF TOP can 2 Check all components around Q404 of the IF amplifie...

Page 254: ...d XF401 see Figure 10 1 2 If the above check reveals no fault go to Step 3 If there is a fault repair it and go to Step 6 3 Remove the PIN TOP and LPF TOP cans 4 Make a visual check of the components...

Page 255: ...Using the calibration application check the calibration of the front end tuning circuitry Open the Raw Data page and click the Receiver tab 2 Record the values listed in the Rx FE Tune BPF Settings fi...

Page 256: ...he measurement point shown in Figure 10 3 4 Also check the LNA bias conditions First measure Vc between the collector of Q401 and ground see Figure 10 3 5 Secondly check Ic To do so unsolder and raise...

Page 257: ...tuning voltages and corresponding DAC values Frequency band Tuning voltages at five different frequencies FE TUNE0 FE TUNE1 FE TUNE2 FE TUNE3 FE TUNE4 A4 band Frequency MHz DAC value Voltage V 65 9 0...

Page 258: ...IF amplifier bias conditions as in Step 4 and Step 5 of Task 5 4 Check the LNA bias conditions as in Step 4 and Step 5 of Task 8 5 If the checks of Step 2 to Step 4 reveal no fault go to Step 6 If th...

Page 259: ...ation The first settings to check concern the AGC voltage calibration 1 In the calibration application open the Raw Data page and click the Receiver tab 2 Note the settings listed in the AGC Voltage C...

Page 260: ...67 AGC0 AGC1 AGC2 Not used 1700 40 1840 40 1960 50 D1 band RF2667 RF9667 AGC0 AGC1 AGC2 1855 40 2050 40 2220 50 1750 40 1900 40 2050 50 G2 band RF2667 RF9667 AGC0 AGC1 AGC2 1845 40 2020 40 2159 50 Not...

Page 261: ...e between 0dBm and about 3dBm 2 If the values are as expected go to Task 13 If they are not go to Step 3 3 Recalibrate the receiver and check the values again 4 If the values are now correct go to Ste...

Page 262: ...e calibration application for Task 15 and Task 16 Task 14 Determine Type of Muting Selected First use the programming application to determine the type of muting selected 1 In the programming applicat...

Page 263: ...e Readings field with the required minimum and maximum values listed in Table 10 5 5 If the mute noise readings are correct go to Task 1 and check the receiver sensitivity If they are not go to Step 6...

Page 264: ...Opening Pt fields and the Hysteresis fields under the Squelch Thresholds label are what the Customer expects 3 If the calibration values are as expected go to Task 10 and check the RSSI calibration I...

Page 265: ...bration application to check the TCXO calibration Open the Raw Data page and click the Volt Ref TCXO VCO VCXO tab 2 Note the values listed in the Tx TCXO and Rx TCXO fields of the TCXO group box The v...

Page 266: ...Figure 10 1 The frequency is the second IF and should be 3 If the second IF is correct go to Step 6 If it is not go to Step 4 4 Recalibrate the TCXO 5 Check if the distortion fault has been removed I...

Page 267: ...r even if set otherwise Regardless of the fault the lock status should be normal Fault Diagnosis Tasks The procedure for diagnosing transmitter faults is divided into tasks which are grouped into the...

Page 268: ...e 33 Set radio in transmit mode 47 Read temperature near PAs displays temperature x in degrees celsius and voltage y 101 x y 0 Set transmit frequency x in hertz and receive frequency y in hertz to spe...

Page 269: ...e the LPF TOP can must be in place if the transmitter is to operate correctly Transmit Tests The following actions need to be taken when carrying out transmit tests secure the board ensure the proper...

Page 270: ...uency and power level if necessary enter the CCTM command 33 to perform a transmit test This command places the radio in transmit mode After completing the measurement or check required immediately en...

Page 271: ...n PSU module 9V0 TX The measurement and test points for diagnosing faults in the power supplies are summarized in Figure 11 1 Figure 11 1 Measurement and test points for diagnosing faults involving th...

Page 272: ...Task 7 in Transmitter RF Power on page 278 7 Measure the voltage at the point on L310 shown in Figure 11 2 VHF or Figure 11 3 UHF This is the supply at the common drain of Q309 and Q310 and should be...

Page 273: ...Tait Electronics Limited November 2007 Figure 11 2 Point for measuring the power supply to the PAs and PA driver VHF L310 Q310 Q309 Q306 R339 Q308 R350 MEASUREMENT POINT ON L310 POINT 2 ON R 350 MEASU...

Page 274: ...mited November 2007 Figure 11 3 Point for measuring the power supply to the PAs and PA driver UHF and K5 bands Q310 Q309 Q306 R339 Q308 L310 MEASUREMENT POINT ON L310 POINT 1 ON R350 MEASUREMENT POINT...

Page 275: ...e should be 4 If the voltage measured in Step 3 is correct go to Step 5 If it is not go to Task 3 and check the 9V power supply 5 Measure the voltage at the point 2 on R350 shown in Figure 11 2 VHF or...

Page 276: ...e CCTM command 33 to place the radio in transmit mode 3 Measure the supply voltage between the 9V0 TX test point and the GND test point see Figure 11 4 4 Enter the CCTM command 32 to place the radio i...

Page 277: ...supply the forward and reverse RF power and the inhibiting of the transmitter VHF UHF IF TOP CAN VCO TOP CAN IF TOP CAN DIRC TOP CAN DIRC TOP CAN D TX INH TEST POINT TX INH TEST POINT TX INH TEST POI...

Page 278: ...biting of transmitter Task 8 check temperature sensor Task 9 power and current are skewed Task 10 repair output matching circuitry Task 11 power and current are low The measurement points for diagnosi...

Page 279: ...TEST LEAD TO TEST SET W 50 TEST LEAD TO TEST SET W D TX INH TEST POINT D TX INH TEST POINT RF CON NECTOR RECEIVER LPF DIREC TIONAL COUPLER PAs BUFFER AMPLIFIER BUFFER AMPLIFIER POWER CONTROL PIN SWITC...

Page 280: ...tage in millivolts corresponding to the power level and should be as shown in Table 11 3 6 Confirm the above result by checking the level at the REV PWR test point see Figure 11 4 using an oscilloscop...

Page 281: ...different frequency bands are given in Table 11 2 7 Repeat Step 3 to Step 5 8 Program the radio with the lowest frequency in the radio s frequency band Enter the CCTM command 101 x x 0 where x is the...

Page 282: ...and current values measured in Task 5 are correct it is likely that the power remains unchanged regardless of the power setting 1 Enter the following CCTM commands in turn and measure the RF output po...

Page 283: ...eck the logic signal at the D TX INH test point see Figure 11 17 on page 310 VHF or Figure 11 4 UHF The signal should be 6 If the signal is inactive as required go to Step 8 If it is active about 3 2V...

Page 284: ...the two numbers returned the first is the temperature in degrees celsius and should be about 25 C If it is go to Task 12 in Biasing of PA Driver and PAs on page 290 If it is not go to Step 3 3 If not...

Page 285: ...ics Limited November 2007 Figure 11 6 PA circuitry under the PAF TOP can and part of the directional coupler under the DIRC TOP can VHF and UHF bands H5 H7 BANDS C348 C349 C350 D301 Q310 Q309 TEST PAD...

Page 286: ...0 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 7 PA circuitry under the PAF TOP can and part of the directional coupler under the DIRC TOP can K5 band temperature sensor moun...

Page 287: ...he highest frequency in the radio s frequency band Enter the CCTM command 101 x x 0 where x is the frequency in hertz The required values for the different frequency bands are given in Table 11 2 7 En...

Page 288: ...nd 33 to place the radio in transmit mode 5 Note the RF output power measured by the test set and note the current reading on the DC power supply 6 Enter the CCTM command 32 to place the radio in rece...

Page 289: ...second PA If it is not enter the CCTM command 32 to place the radio in receive mode and carry out Task 12 and then Task 13 7 For the second PA Q309 enter the CCTM command 332 to check the DAC value of...

Page 290: ...Biasing If the transmitter is not being inhibited check the biasing of the two PAs and the PA driver First make the following preparations 1 Set the current limit on the DC power supply to 3A 2 Enter...

Page 291: ...E SIZER CDC TX DRV BIAS CDC TX FIN BIAS1 CDC TX FIN BIAS2 CDC TX PWR CTL TX FWD PWR TX REV PWR CODEC AND AUDIO CIRCUITRY SIGNAL TYPES RF ANALOG SET PWR TEST POINT SET PWR TEST POINT DRV TEST POINT DRV...

Page 292: ...his will be less than 500mA 3 Enter the CCTM command 331 x where x was recorded in Task 12 4 Check that the voltage changes to 5 Also note the current reading This should increase by an amount approxi...

Page 293: ...ed November 2007 Figure 11 9 Test points and components of the shaping filter VHF R340 R334 R347 R342 C324 C322 R336 R333 IC303 IC301 B1 BAND DIRC TOP CAN DRV TEST POINT REV PWR TEST POINT FWD PWR TES...

Page 294: ...1 10 Test points and components of the shaping filter UHF and K5 bands IC301 R334 IC303 R333 R336 R347 R342 C324 C322 H5 H7 BANDS DIRC TOP CAN FWD PWR TEST POINT REV PWR TEST POINT IF TOP CAN PWR TEST...

Page 295: ...2 Enter the CCTM command 32 to place the radio in receive mode 3 Remove the PAF TOP can 4 Enter the CCTM command 33 to place the radio in transmit mode 5 Enter the CCTM command 331 x where x was recor...

Page 296: ...l Tait Electronics Limited November 2007 Figure 11 11 PA circuitry under the PAF TOP can VHF and UHF H5 H7 BANDS Q310 Q309 CIRCUITRY BETWEEN IC301 AND PAs VIA TO GATE OF Q310 VIA TO GATE OF Q309 VIA T...

Page 297: ...ter Fault Finding 25W 297 Tait Electronics Limited November 2007 Figure 11 12 PA circuitry under the PAF TOP can K5 band via to gate of Q309 via to gate of Q310 via to pin 14 of IC301 via to pin 8 of...

Page 298: ...the multimeter to measure the voltage at the FIN1 test point see Figure 11 9 and Figure 11 10 The voltage should be 2 Enter the CCTM command 331 x where x was recorded in Task 12 3 Check that the volt...

Page 299: ...nd Figure 11 10 The voltage should be 2 Note the current reading on the DC power supply As mentioned in Step 7 of Task 12 the current will be less than 500mA 3 Enter the CCTM command 332 y where y was...

Page 300: ...o to Step 2 2 Enter the CCTM command 32 to place the radio in receive mode 3 Remove the PAF TOP can 4 Enter the CCTM command 33 to place the radio in transmit mode 5 Enter the CCTM command 332 y where...

Page 301: ...the multimeter to measure the voltage at the FIN2 test point see Figure 11 9 and Figure 11 10 The voltage should be 2 Enter the CCTM command 332 y where y was recorded in Task 12 3 Check that the volt...

Page 302: ...current 3 Note the current reading on the DC power supply 4 Compare the above current readings The current should increase by an amount approximately equal to the offset given in Table 11 6 If it doe...

Page 303: ...3 If the PAD TOP can has already been removed go to Step 7 If it has not go to Step 4 4 Enter the CCTM command 32 to place the radio in receive mode 5 Remove the PAD TOP can 6 Enter the CCTM command 3...

Page 304: ...Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 13 PA driver circuitry under the PAD TOP can VHF PADTOP Q3504 B1 BAND R327 C310 R324 Q306 COMPONENTS C310 R324...

Page 305: ...TM8100 TM8200 Service Manual Transmitter Fault Finding 25W 305 Tait Electronics Limited November 2007 Figure 11 14 PA driver circuitry under the PAD TOP can UHF...

Page 306: ...Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 15 PA driver circuitry under the PAD TOP can K5 band gate of Q306 componentsC310 R324 and R...

Page 307: ...t reading on the DC power supply 3 Enter the CCTM command 114 0 to switch off the power 4 Note the current reading on the DC power supply 5 Compare the above current readings The current should decrea...

Page 308: ...nce may affect these measurements 6 Enter the CCTM command 32 to place the radio in receive mode 7 The voltages measured in Step 5 should be as given in Table 11 7 If they are go to Step 10 If the FWD...

Page 309: ...ure 11 17 for UHF and Figure 11 19 for the K5 band and R341 see Figure 11 17 Figure 11 18 and Figure 11 19 11 Repair any fault revealed by the above checks Replace IC303 if none of the other component...

Page 310: ...11 9 and Figure 11 10 C310 R324 and R327 see Figure 11 13 to Figure 11 15 between the power con trol circuit and Q306 2 Repair any fault revealed by the checks in Step 1 If none of the above mentioned...

Page 311: ...vice Manual Transmitter Fault Finding 25W 311 Tait Electronics Limited November 2007 Figure 11 18 Components of concern on the bottom side of the main board UHF H5 H7 BANDS C319 R341 R340 R396 COPPER...

Page 312: ...Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 19 Components of concern on the bottom side of the main board K5 band copper plate VCO BOT...

Page 313: ...3 Measure the voltage at pin 10 of IC303 in the power control circuit The voltage should be 4 If the voltage is correct go to Step 5 If it is not go to Task 25 5 Enter the CCTM command 32 to place th...

Page 314: ...e mode 3 If the voltage measured in Step 1 is correct go to Step 4 If it is not go to Step 5 4 Check the components R334 see Figure 11 9 and Figure 11 10 and C319 see Figure 11 17 and Figure 11 18 and...

Page 315: ...Task 33 and Task 34 PIN switch Task 35 LPF The initial signal path includes the exciter and PA driver The directional coupler PIN switch and LPF make up the final signal path The measurement points fo...

Page 316: ...e frequency enter the CCTM command 101 x x 0 where x is the frequency in hertz 3 Enter the CCTM command 33 to place the radio in transmit mode 4 Use an RFP5401A RF probe or the equivalent to measure t...

Page 317: ...and VHF PADTOP Q3504 C317 C389 Q306 C3500 C3505 C3509 C307 Q3501 Q3502 Q3505 H5 H7 BANDS OUTPUT OF PA DRIVER OUTPUT OF STAGE 3 OF EXCITER AT C307 R3525 JUNCTION OF R3525 AND C3512 OUTPUT OF STAGE 2 OF...

Page 318: ...8200 Service Manual Tait Electronics Limited November 2007 Figure 11 22 PA driver circuitry under the PAD TOP can K5 band output of stage 2 of exciter at C307 output of stage 2 of exciter at C313 synt...

Page 319: ...15 0 0 5 15 6 0 5 70 136 155 174 0 3 0 1 0 2 0 1 0 3 0 1 0 6 0 2 0 6 0 2 0 7 0 2 2 7 0 5 2 2 0 5 1 7 0 5 4 0 0 5 3 7 0 5 4 0 0 5 24 5 0 5 29 0 0 5 22 0 0 5 Table 11 9 RF voltages along the initial RF...

Page 320: ...4 0 0 5 2 9 0 5 60 400 435 470 0 3 0 1 0 3 0 1 0 3 0 1 1 2 0 2 2 4 0 2 1 1 0 2 4 2 0 5 2 7 0 5 2 1 0 5 9 2 0 5 6 8 0 5 4 8 0 5 8 1 0 5 7 3 0 5 5 3 0 5 Table 11 11 RF voltages along the initial RF sign...

Page 321: ...0 1 1 1 0 2 1 0 0 2 1 2 0 2 2 2 0 5 1 9 0 5 0 9 0 5 2 5 0 5 2 0 0 5 0 9 0 5 15 450 485 520 0 2 0 1 0 2 0 1 0 2 0 1 1 1 0 2 1 0 0 2 1 2 0 2 2 2 0 5 1 9 0 5 0 9 0 5 3 1 0 5 2 4 0 5 1 1 0 5 20 450 485 5...

Page 322: ...F bands see Figure 11 21 or Q300 for the K5 band see Figure 11 22 Use an RFP5401A RF probe or the equivalent The required voltage should be as given in Table 11 8 B1 Table 11 9 G2 Table 11 10 H5 Table...

Page 323: ...H7 or Table 11 12 K5 2 If the voltage is correct go to Task 30 If it is not go to Step 3 3 Enter the CCTM command 32 to place the radio in receive mode 4 Check the components around Q3502 for the VHF...

Page 324: ...t go toStep 3 3 With the radio still in transmit mode measure the RF voltage at the junction of R3525 and C3512 see Figure 11 21 The voltage should be 4 Enter the CCTM command 32 to place the radio in...

Page 325: ...the above checks reveal a fault go to Step 6 If they do not go to Task 12 in Biasing of PA Driver and PAs on page 290 6 Repair the fault Confirm the removal of the fault and go to Final Tasks on page...

Page 326: ...TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 23 Components of the interstage matching circuitry between the PA driver Q306 and the PAs Q309 and Q310 VHF B1 BAND Q310...

Page 327: ...itter Fault Finding 25W 327 Tait Electronics Limited November 2007 Figure 11 24 Components of the interstage matching circuitry between the PA driver Q306 and the PAs Q309 and Q310 UHF H5 H7 BANDS Q31...

Page 328: ...nding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 25 Components of the interstage matching circuitry between the PA driver Q306 and the PAs Q309 and Q310 K5 band...

Page 329: ...test pad shown in Figure 11 26 and solder the central wire to the other terminal of the test capacitor 5 Connect the test lead to the test set 6 Enter the CCTM command 326 5 to set the transmitter po...

Page 330: ...cs Limited November 2007 Figure 11 26 Circuitry under the DIRC TOP can and the points for attaching the test lead and test capacitor K5 band test pad mounting point for test capacitor UHF test pad mou...

Page 331: ...power level to the maximum 6 Enter the CCTM command 101 x x 0 where x is the lowest frequency in hertz for maximum power as given in Table 11 8 B1 Table 11 9 G2 Table 11 10 H5 Table 11 11 H7 or Table...

Page 332: ...he test capacitor 5 Connect the test lead to the test set 6 Enter the CCTM command 326 5 to set the transmitter power level to the maximum 7 Enter the CCTM command 101 x x 0 where x is the lowest freq...

Page 333: ...nics Limited November 2007 Figure 11 27 Circuitry under the PIN TOP can and points for attaching the test lead and test capacitor K5 band test pad mounting point for test capacitor UHF test pad mounti...

Page 334: ...t enter the CCTM command 326 5 to set the transmitter power level to the maximum 5 Enter the CCTM command 101 x x 0 where x is the lowest frequency in hertz for maximum power as given in Table 11 8 B1...

Page 335: ...rvice Manual Transmitter Fault Finding 25W 335 Tait Electronics Limited November 2007 Figure 11 28 Components of concern on the bottom side of the main board VHF B1 BAND R389 R390 NB BOT CAN COPPER PL...

Page 336: ...Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 29 Components of concern on the bottom side of the main board UHF H5 H7 BANDS R3000 R389 R390 COPPER PL...

Page 337: ...100 TM8200 Service Manual Transmitter Fault Finding 25W 337 Tait Electronics Limited November 2007 Figure 11 30 Components of concern on the bottom side of the main board K5 band VCO BOT can copper pl...

Page 338: ...338 Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 11 31 Circuitry under the LPF TOP can K5 band UHF VHF...

Page 339: ...level to the maximum 6 Enter the CCTM command 101 x x 0 where x is the lowest frequency in hertz for maximum power as given in Table 11 8 B1 Table 11 8 G2 Table 11 10 H5 Table 11 11 H7 or Table 11 12...

Page 340: ...340 Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 341: ...d Test Mode CCTM on page 123 Table 12 1 CCTM commands required for the diagnosis of faults in the transmitter Command Description 32 Set radio in receive mode 33 Set radio in transmit mode 47 Read tem...

Page 342: ...program the radio with any frequency in the above ranges Can Removal There are five cans shielding the bulk of the transmitter circuitry PAD TOP PAF TOP DIRC TOP PIN TOP LPF TOP To remove any can fir...

Page 343: ...ed to the RF communications test set as shown in Figure 4 2 on page 116 But for those tests where this connection is not necessary a 50 load may be used instead Do not operate the transmitter without...

Page 344: ...ator in PSU module 9V0 TX The measurement and test points for diagnosing faults in the power supplies are summarized in Figure 12 1 Figure 12 1 Measurement and test points for diagnosing faults involv...

Page 345: ...4 Enter the CCTM command 326 5 to set the radio to maximum power 5 Attempt to place the radio in transmit mode Enter the CCTM command 33 6 If the radio enters the transmit mode continue with Step 7 I...

Page 346: ...smitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 12 2 Point for measuring the power supply to the PAs UHF shown H5 H6 BANDS SHOWN MEASUREMENT POINT...

Page 347: ...ait Electronics Limited November 2007 Figure 12 3 Point for measuring the power supply to the PA driver VHF shown C310 R324 R327 C317 C389 Q306 Q308 R350 L306 PAD TOP MEASUREMENT POINT ON L306 MEASURE...

Page 348: ...ude with Step 8 7 Remove the heat transfer block from the board Replace Q311 situated on the bottom side of the board next to the power connector Replace the heat transfer block and conclude with Step...

Page 349: ...ovember 2007 Figure 12 4 Test points for checking the 9V supply the forward and reverse RF power and the inhibiting of the transmitter DIRC TOP CAN IF TOP CAN VCO TOP CAN UHF ONLY D TX INH TEST POINT...

Page 350: ...ransmitter Task 8 check temperature sensor Task 9 power and current are skewed Task 10 repair output matching circuitry Task 11 power and current are low The measurement points for diagnosing faults c...

Page 351: ...INT 50 TEST LEAD TO TEST SET W 50 TEST LEAD TO TEST SET W D TX INH TEST POINT D TX INH TEST POINT RF CON NECTOR RECEIVER LPF DIREC TIONAL COUPLER PAs BUFFER AMPLIFIER BUFFER AMPLIFIER POWER CONTROL PI...

Page 352: ...tage in millivolts corresponding to the power level and should be as shown in Table 12 3 6 Confirm the above result by checking the level at the REV PWR test point see Figure 12 4 using an oscilloscop...

Page 353: ...required values for the different frequency bands are given in Table 12 2 7 Repeat Step 3 to Step 5 8 Program the radio with the lowest frequency in the radio s frequency band Enter the CCTM command 1...

Page 354: ...ignal at the TX INH test point see Figure 12 4 The signal should be 3 If the signal is inactive as required go to Step 4 If it is active about 1 1V the transmitter is being inhibited go to Step 5 4 En...

Page 355: ...erature sensor might be the cause 1 Enter the CCTM command 47 to check the temperature reading 2 Of the two numbers returned the first is the temperature in degrees celsius and should be about 25 C If...

Page 356: ...imited November 2007 Figure 12 6 PA circuitry under the PAF TOP can and part of the directional coupler under the DIRC TOP can VHF shown PAF TOP D301 Q310 Q309 D1 BAND TEMPERATURE SENSOR C350 C349 C34...

Page 357: ...ect the test lead to the test set 6 Program the radio with the highest frequency in the radio s frequency band Enter the CCTM command 101 x x 0 where x is the frequency in hertz 7 Enter the CCTM comma...

Page 358: ...the radio in transmit mode 5 Note the RF output power measured by the test set and note the current reading on the DC power supply 6 Enter the CCTM command 32 to place the radio in receive mode 7 Pro...

Page 359: ...it is not enter the CCTM command 32 to place the radio in receive mode and carry out Task 12 and then Task 13 7 For the second PA Q309 enter the CCTM command 332 to check the DAC value of final bias...

Page 360: ...k Biasing If the transmitter is not being inhibited check the biasing of the two PAs and the PA driver First make the following preparations 1 Set the current limit on the DC power supply to 2A 2 Ente...

Page 361: ...FRE QUENCY SYNTHE SIZER CDC TX DRV BIAS CDC TX FIN BIAS1 CDC TX FIN BIAS2 CDC TX PWR CTL TX FWD PWR TX REV PWR CODEC AND AUDIO CIRCUITRY SIGNAL TYPES RF ANALOG SET PWR TEST POINT SET PWR TEST POINT DR...

Page 362: ...ess than 500mA 3 Enter the CCTM command 331 x where x was recorded in Task 12 4 Check that the voltage changes to 5 Also note the current reading This should increase by an amount approximately equal...

Page 363: ...25W 363 Tait Electronics Limited November 2007 Figure 12 8 Test points and components of the shaping filter DIRC TOP CAN IF TOP CAN VCO TOP CAN UHF ONLY SET PWR TEST POINT FWD PWR TEST POINT PWR TEST...

Page 364: ...ce Manual Tait Electronics Limited November 2007 Figure 12 9 PA circuitry under the PAF TOP can VHF shown D301 PAF TOP CIRCUITRY BETWEEN IC301 AND PAs VIA TO GATE OF Q309 VIA TO GATE OF Q310 Q310 Q309...

Page 365: ...2 Enter the CCTM command 32 to place the radio in receive mode 3 Remove the PAF TOP can 4 Enter the CCTM command 33 to place the radio in transmit mode 5 Enter the CCTM command 331 x where x was reco...

Page 366: ...of the PAs 1 Use the multimeter to measure the voltage at the FIN1 test point see Figure 12 8 The voltage should be 2 Enter the CCTM command 331 x where x was recorded in Task 12 3 Check that the vol...

Page 367: ...re 12 8 The voltage should be 2 Note the current reading on the DC power supply As mentioned in Step 7 of Task 12 the current will be less than 500mA 3 Enter the CCTM command 332 y where y was recorde...

Page 368: ...go to Step 2 2 Enter the CCTM command 32 to place the radio in receive mode 3 Remove the PAF TOP can 4 Enter the CCTM command 33 to place the radio in transmit mode 5 Enter the CCTM command 332 y whe...

Page 369: ...of the PAs 1 Use the multimeter to measure the voltage at the FIN2 test point see Figure 12 8 The voltage should be 2 Enter the CCTM command 332 y where y was recorded in Task 12 3 Check that the vol...

Page 370: ...the clamp current 3 Note the current reading on the DC power supply 4 Compare the above current readings The current should increase by an amount approximately equal to the offset given in Table 12 6...

Page 371: ...o to Task 21 3 If the PAD TOP can has already been removed go to Step 7 If it has not go to Step 4 4 Enter the CCTM command 32 to place the radio in receive mode 5 Remove the PAD TOP can 6 Enter the C...

Page 372: ...TM8200 Service Manual Tait Electronics Limited November 2007 Figure 12 10 PA driver circuitry under the PAD TOP can VHF shown R308 R324 C310 R327 C301 Q303 C313 Q300 C300 C317 C389 Q306 PAD TOP D1 BAN...

Page 373: ...he current reading on the DC power supply 3 Enter the CCTM command 114 0 to switch off the power 4 Note the current reading on the DC power supply 5 Compare the above current readings The current shou...

Page 374: ...374 Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 12 11 Circuitry under the DIRC TOP can UHF shown...

Page 375: ...2 7 If it is go to Task 24 If it is not go to Step 6 6 Check the voltage at pin 5 of IC303 or use the FWD PWR test point see Figure 12 8 Note that the probe impedance might affect the measurement 7 En...

Page 376: ...e 163 If the repair failed replace the board and go to Final Tasks on page 163 Task 23 Power Control for PA Driver In this task any faults in the path between the power control circuit and the PA driv...

Page 377: ...anual Transmitter Fault Finding 25W 377 Tait Electronics Limited November 2007 Figure 12 12 Components of concern on the bottom side of the board VHF shown R390 R389 R3000 C319 R340 C345 R396 R3009 CO...

Page 378: ...ce IC303 see Figure 12 8 if none of the other components is faulty Confirm the removal of the fault and go to Final Tasks on page 163 If the repair failed replace the board and go to Final Tasks on pa...

Page 379: ...ask 30 directional coupler Task 31 and Task 32 PIN switch Task 33 LPF The initial signal path includes the exciter and PA driver The directional coupler PIN switch and LPF make up the final signal pat...

Page 380: ...26 x where x defines the level To set the frequency enter the CCTM command 101 x x 0 where x is the frequency in hertz 3 Enter the CCTM command 33 to place the radio in transmit mode 4 Use an RFP5401A...

Page 381: ...al Transmitter Fault Finding 25W 381 Tait Electronics Limited November 2007 Figure 12 14 PA driver circuitry under the PAD TOP can UHF shown Synthesizer output at C300 Exciter output at C301 Driver ou...

Page 382: ...0 3 0 1 0 4 0 1 0 4 0 1 0 4 0 1 2 7 0 5 2 3 0 5 2 6 0 5 0 98 0 5 1 25 0 5 0 97 0 5 5 66 77 88 0 3 0 1 0 3 0 1 0 3 0 1 0 4 0 1 0 4 0 1 0 4 0 1 2 7 0 5 2 4 0 5 2 6 0 5 1 8 0 5 2 5 0 5 1 9 0 5 12 66 77 8...

Page 383: ...5 2 5 0 5 3 3 0 5 1 7 0 5 4 5 0 5 40 136 155 174 0 3 0 1 0 2 0 1 0 3 0 1 0 4 0 1 0 4 0 1 0 3 0 1 2 5 0 5 2 5 0 5 2 5 0 5 8 2 0 5 5 5 0 5 7 7 0 5 Table 12 10 RF voltages along the initial RF signal pa...

Page 384: ...0 3 0 1 0 3 0 1 0 3 0 1 0 3 0 1 0 3 0 1 0 2 0 1 3 3 0 5 3 3 0 5 3 6 0 5 12 5 9 4 20 8 Table 12 12 RF voltages along the initial RF signal path of the UHF radio H5 and H6 bands Power level W Frequency...

Page 385: ...see Figure 12 14 9 Repair any fault revealed by the above checks Replace Q300 see Figure 12 14 if none of the other components is faulty 10 Confirm the removal of the fault and go to Final Tasks on pa...

Page 386: ...ove checks reveal a fault go to Step 6 If they do not go to Task 12 in Biasing of PA Driver and PAs on page 360 6 Repair the fault Confirm the removal of the fault and go to Final Tasks on page 163 If...

Page 387: ...ual Transmitter Fault Finding 25W 387 Tait Electronics Limited November 2007 Figure 12 15 Components of the interstage matching circuitry between the PA driver Q306 and the PAs Q309 and Q310 UHF shown...

Page 388: ...older the outer sheath in the position shown in Figure 12 16 and solder the central wire to the other terminal of the test capacitor 5 Connect the test lead to the test set 6 Enter the CCTM command 32...

Page 389: ...Fault Finding 25W 389 Tait Electronics Limited November 2007 Figure 12 16 Circuitry under the DIRC TOP can and the points for attaching the test lead and test capacitor UHF shown MOUNTING POINT FOR T...

Page 390: ...r level to the maximum 6 Enter the CCTM command 101 x x 0 where x is the lowest frequency in hertz for maximum power as given in Table 12 8 A4 band Table 12 9 B1 band Table 12 10 C0 band Table 12 11 D...

Page 391: ...e to the other terminal of the test capacitor 5 Connect the test lead to the test set 6 Enter the CCTM command 326 5 to set the transmitter power level to the maximum 7 Enter the CCTM command 101 x x...

Page 392: ...00 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 12 17 Circuitry under the PIN TOP can and points for attaching the test lead and test capacitor UHF shown MOUNTING POINT FOR TEST...

Page 393: ...et the transmitter power level to the maximum 4 Enter the CCTM command 101 x x 0 where x is the lowest frequency in hertz for maximum power as given in Table 12 8 A4 band Table 12 9 B1 band Table 12 1...

Page 394: ...nding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 12 18 Components of concern on the bottom side of the board C0 D1 bands R390 R389 R3000 C319 R340 C345 R396 R3009 C...

Page 395: ...er Fault Finding 25W 395 Tait Electronics Limited November 2007 Figure 12 19 Components of concern on the bottom side of the board A4 B1 H5 H6 bands B1 BAND COPPER PLATE VCO BOT CAN NB BOT CAN COPPER...

Page 396: ...396 Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 12 20 Circuitry under the LPF TOP can top side VHF UHF...

Page 397: ...d 101 x x 0 where x is the lowest frequency in hertz for maximum power as given in Table 12 8 A4 band Table 12 9 B1 band Table 12 10 C0 band Table 12 11 D1 band or Table 12 12 H5 H6 bands 6 Enter the...

Page 398: ...398 Transmitter Fault Finding 25W TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 399: ...g the correct amount of RF power In the fifth case the transmitter will be operating normally Fault Diagnosis Procedures The procedures for diagnosing the above faults are given below in the following...

Page 400: ...uired by IC201 1 Remove the board from the chassis 2 Remove the CDC BOT can 3 Measure the voltage 9V0 at pin 4 of IC201 see Figure 13 1 4 If the voltage is correct go to Task 2 If it is not go to Step...

Page 401: ...escribed in Task 3 of Power Supply Fault Finding on page 174 4 Proceed to the section relevant to the fault exhibited Faulty Speaker Audio distorted or no speaker audio No Speaker Audio at Auxiliary C...

Page 402: ...all unmute criteria are satisfied but there is either no speaker audio or the speaker audio is distorted There are four tasks Task 4 check audio power amplifier Task 5 check speaker outputs Task 6 che...

Page 403: ...f it is not go to Task 7 5 Vary the volume control This should cause the signal level at the TP200 test point see Figure 13 2 to vary If it does go to Step 6 If it does not go to Task 6 6 Check the vo...

Page 404: ...ed replace the board and go to Final Tasks on page 163 5 With the volume at maximum check each speaker output at pins 3 and 8 of IC202 see Figure 13 2 6 If the speaker outputs are correct the fault is...

Page 405: ...ervice Manual CODEC and Audio Fault Finding 405 Tait Electronics Limited November 2007 Figure 13 3 Circuitry under the CDC TOP can and adjacent interface circuitry Junction of R234 and R235 Junction o...

Page 406: ...fault and go to Final Tasks on page 163 If the repair failed or the fault could not be found replace the board and go to Final Tasks on page 163 5 Remove the CDC TOP can 6 Check the voltage at the ju...

Page 407: ...00 Service Manual CODEC and Audio Fault Finding 407 Tait Electronics Limited November 2007 Figure 13 4 Circuitry under the CDC BOT can LO2 BOT CAN CAN FOR DIGITAL BOARD JUNCTION OF R218 AND IC204 CDC...

Page 408: ...the signal is correct go to Step 4 If it is not either CODEC 1 IC204 or the digital board is faulty replace the board and go to Final Tasks on page 163 4 Check for continuity between the TP200 test p...

Page 409: ...s there is no signal at pin 13 AUD TAP OUT of the connector The fault diagnosis procedure comprises two tasks Task 8 check signal from CODEC Task 9 check LPF and buffer amplifier in CODEC circuitry Th...

Page 410: ...rnal options connector SK102 see Figure 13 5 alternatively the measurement point for CDC AUD TAP OUT shown in Figure 13 4 The signal should be 7 If the above signal is correct go to Step 8 If it is no...

Page 411: ...8100 TM8200 Service Manual CODEC and Audio Fault Finding 411 Tait Electronics Limited November 2007 Figure 13 6 Circuitry in the vicinity of the auxiliary connector bottom side AUXILIARY CONNECTOR SK1...

Page 412: ...ed on IC201 pins 1 to 3 see Figure 13 7 Repair any fault and conclude with Step 9 6 Check the voltage at pin 7 of IC201 see Figure 13 7 7 If the voltage is correct go to Step 8 If it is not check the...

Page 413: ...100 TM8200 Service Manual CODEC and Audio Fault Finding 413 Tait Electronics Limited November 2007 Figure 13 7 Circuitry under the CDC BOT can LO2 BOT CAN CAN FOR DIGITAL BOARD JUNCTION OF R224 AND IC...

Page 414: ...the CDC BOT can 2 With no RF signal applied check the voltage at pin 14 of IC201 see Figure 13 7 3 If the above voltage is correct go to Task 11 If it is not go to Step 4 4 Check the voltage at pin 12...

Page 415: ...nd the frequency selected for channel 1 2 Apply a strong on channel signal 3 Check that a sine wave is present at the QN test point there is access through a hole in the IF TOP can see Figure 13 8 4 I...

Page 416: ...t of the circuitry that is faulty 1 Apply a 1kHz audio signal of 20 mVpp at the microphone input on the control head 2 Enter the CCTM command 33 to place the radio in transmit mode The frequency is th...

Page 417: ...TM8100 TM8200 Service Manual CODEC and Audio Fault Finding 417 Tait Electronics Limited November 2007 Figure 13 9 Circuitry in under the CDC BOT can LO2 BOT CAN CAN FOR DIGITAL BOARD...

Page 418: ...found replace the board and go to Final Tasks on page 163 Task 14 Check Bias Network If the signal at the TP503 test point is incorrect but the other checks in the above tasks reveal no fault check t...

Page 419: ...TM8200 Service Manual CODEC and Audio Fault Finding 419 Tait Electronics Limited November 2007 Figure 13 10 Circuitry under the CDC TOP can ITF AUD TAP IN JUNCTION OF R237 AND R241 JUNCTION OF R229 AN...

Page 420: ...he CCTM command 32 to place the radio in receive mode 4 If the modulation is correct go to Step 5 If it is not go to Task 12 of Faulty Modulation on page 416 5 Apply a 1kHz AC coupled signal of 0 7Vpp...

Page 421: ...ts around IC205 or else replace IC205 see Figure 13 10 5 Confirm the removal of the fault and go to Final Tasks on page 163 If the repair failed replace the board and go to Final Tasks on page 163 6 R...

Page 422: ...422 CODEC and Audio Fault Finding TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 423: ...ommands in Table 14 1 on page 424 General The following applies for all fault finding procedures Important Do not disconnect or connect the control head while power is supplied to the radio To connect...

Page 424: ...2 3 high none 1003 Keypad backlighting Activate keypad backlighting at specified intensity 1003 0 off 1003 1 low 1003 2 medium 1003 3 high none 1004 LCD backlighting Activate LCD backlighting at speci...

Page 425: ...inding of the remote control head kit CCTM command Entry at keyboard Response on screen 1012 Remote kit turns the audio amplifier on and off 1012 0 off 1012 1 on none 1013 Mute audio amplifier mutes a...

Page 426: ...L201 R205 and R206 for open or shorted contacts Replace if necessary Continue with Step 2 2 Check the 13 8V supply voltage 9 7V to 17 2V between pin 2 of the control head connector J103 and pin 8 of...

Page 427: ...Check the 1 5V supply voltage at pin 4 of U203 If the signal is correct continue with Step 6 If the signal is not correct continue with Step 5 5 Check E203 for continuity If E203 is correct continue w...

Page 428: ...fer to LCD Backlighting Faulty on page 430 Note If some of the LCD pixels are faulty usually complete rows or lines send CCTM command 1006 1 to activate all LCD pixels If some of the LCD pixels are fa...

Page 429: ...to a good control head 3 Replace the LCD Carefully remove the protective plastic film from the LCD Take care not to scratch the soft polarizer material on the top side of the LCD 4 Use an oscilloscope...

Page 430: ...e at pin 1 S1 of Q102 If the signal is correct continue with Step 3 If the signal is not correct refer to Power Supply Faulty on page 426 3 Send CCTM command 1004 3 to switch on LCD backlighting 4 Che...

Page 431: ...the LCD tem perature sensor is faulty 2 Send CCTM command 1007 to read the temperature sensor value If the value does not correspond to the ambient temperature U601 is faulty 3 Check the 3 3V supply v...

Page 432: ...ure the voltage at the point between the LED and the transistor If the voltage is incorrect replace the LED 4 Replace the corresponding transistor LED Intensity Faulty If the intensity of the LEDs is...

Page 433: ...November 2007 3 Check the resistors R601 and R602 and replace if necessary If the resistors are okay the FPGA is faulty and the control head board must be replaced R601 2 2k R602 5 62k Figure 14 6 PCB...

Page 434: ...2 Check the 13 8V supply voltage of the relevant branch 3 From top to bottom check the resistor the three LEDs and the transistor of the relevant branch for continuity All LEDs Faulty or Intensity Fa...

Page 435: ...trol head board must be replaced 3 Check the signals at pins 6 C1 and 3 C2 of Q2 Check the signals at pins 1 E1 and 4 E2 of Q2 If any of these signals are incorrect Q2 is faulty 4 Check the resistors...

Page 436: ...e CH ON OFF signal level from the radio at pin 9 of the control head connector J103 If the signal is approx 13V continue with Step 5 If near or at ground continue with Step 3 3 Visually inspect pin 9...

Page 437: ...8100 TM8200 Service Manual Fault Finding of Control Head with Graphical Display 437 Tait Electronics Limited November 2007 Figure 14 10 PCB layout of the power on off key circuitry top side bottom sid...

Page 438: ...h should be 3 3V The row side of the switch should be GND A successful press will cause transition on associated KEY_COL signal to low Note CCTM command 1009 can be used to monitor keypad press and re...

Page 439: ...associated resistor and diodes for open or shorted circuits If one row of keys is faulty 1 Visually inspect the associated resistor for open or shorted circuits F2 key F4 key scroll up key R620 D602...

Page 440: ...through two ferrite beads L105 and L106 If the speaker functions only intermittently or the audio level is low 1 Check the continuity from the speaker connector J104 to pin 18 SPK and pin 17 SPK of th...

Page 441: ...TM8100 TM8200 Service Manual Fault Finding of Control Head with Graphical Display 441 Tait Electronics Limited November 2007 Figure 14 14 PCB layout of the speaker circuitry top side bottom side...

Page 442: ...rcuitry of the main board refer to Faulty Speaker Audio on page 402 If the volume control works only intermittently works only at full volume or does not work at all 1 Check that the voltage between p...

Page 443: ...M8100 TM8200 Service Manual Fault Finding of Control Head with Graphical Display 443 Tait Electronics Limited November 2007 Figure 14 16 PCB layout of the volume control circuitry top side bottom side...

Page 444: ...With no PTT switch and hookswitch operated check whether pin 4 of J106 is 4V If the signal is correct continue with Step 2 If the signal is incorrect inspect R25 for open or shorted contacts Repair if...

Page 445: ...TM8100 TM8200 Service Manual Fault Finding of Control Head with Graphical Display 445 Tait Electronics Limited November 2007 Figure 14 18 PCB layout of PTT circuitry top side bottom side...

Page 446: ...446 Fault Finding of Control Head with Graphical Display TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 447: ...n page 159 General The following applies for all fault finding procedures Important Do not disconnect or connect the control head while power is supplied to the radio If the radio does not switch on w...

Page 448: ...ontrol Head with 1 2 or 3 Digit Display TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 15 1 Top side of the control head board 2 digit control head shown pads for LCD pads...

Page 449: ...8200 Service Manual Fault Finding of Control Head with 1 2 or 3 Digit Display 449 Tait Electronics Limited November 2007 Figure 15 2 Bottom side of the control head board 2 digit control head shown pi...

Page 450: ...he space frame 6 Re assemble the control head board 7 Reconnect the control head loom to the control head and test the user interface If the fault has been removed return to Initial Tasks on page 155...

Page 451: ...nd go to Step 4 If it is not replace IC7 and go to Step 4 4 Test the user interface If the fault has been removed return to Initial Tasks on page 155 If it has not the repair failed replace the contro...

Page 452: ...r to check that the RST line at pin 6 of IC7 is high The level should be 3 3 V If it is go to Step 5 If it is not go to Step 4 4 Check for continuity in the LCD driver circuitry D22 not fitted for 3 d...

Page 453: ...loom and test the keys If the fault has been removed return to Initial Tasks on page 155 If it has not go to Step 5 5 Replace the keypad 6 Re assemble the control head Reconnect the control head loom...

Page 454: ...Initial Tasks on page 155 15 8 Volume Control Faulty If the volume control works only intermittently works only at full volume or does not work at all 1 Disconnect the control head loom 2 Check that...

Page 455: ...PCB components of the radio body Figure 16 1 Figure 16 2 and Table 16 1 control head with graphical display Figure 16 3 and Table 16 2 control heads with 1 2 or 3 digit display Figure 16 4 Table 16 3...

Page 456: ...456 Spare Parts TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 16 2 Spare parts of the radio body sheet 2 of 2 G 1 2 x3 3641z_01 1 x2 1 1 2 1 2 x2 1 1...

Page 457: ...25W radio 2 2 346 10022 07 346 10030 08 1 Auxiliary connector SK101 1 240 02022 xx 1 Inner foam seal for auxiliary connector 1 362 01110 xx TMAA22 02 mech kit 1 Outer foam seal for auxiliary connector...

Page 458: ...458 Spare Parts TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 16 3 Spare parts of the control head with graphical display C E F G G 1 H I J 1 1 1 1 1 1 x2 x4 D B 1...

Page 459: ...J Space frame 1 319 30077 xx TMAA22 08 1 Speaker clamp 1 303 50111 xx TMAA22 08 1 Speaker 1 252 00011 xx TMAA22 08 1 LCD assembly including LCD seal b 1 TMAA22 95 x3 1 Main keypad 1 311 03121 xx TMAA2...

Page 460: ...460 Spare Parts TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Figure 16 4 Spare parts of the control heads with 1 2 or 3 digit display x3 B C E Fx2 1 i j 1 1 h g 1 1 1 d...

Page 461: ...19 30073 01 1 303 50111 xx TMAA22 01 and 90 i Speaker 1 252 00011 xx TMAA22 01 and 90 j Short light pipe 1 262 00003 xx TMAA22 01 and 90 1 Long light pipe 1 262 00004 xx TMAA22 01 and 90 1 Keypad 1 31...

Page 462: ...07 1 1 319 30073 00 01 319 30073 02 H Front panel assembly 1 I Knob for volume control potentiometer 1 311 01054 xx J Speaker 1 252 00011 xx 1 Speaker clamp since April 2007 not for use with space fra...

Page 463: ...pare parts of the RJ45 control head Pos Description Qty IPN B Control head board 1 XMAC30 C Control head loom with female female adaptor female female adaptor 1 219 02882 xx 210 00021 41 D 3 x 8 PT sc...

Page 464: ...464 Spare Parts TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 465: ...Board 489 18 1 Operation 489 18 2 Installing the RS 232 Board 490 18 3 Interface Specification 492 18 4 PCB Information 493 19 TMAA01 05 and TMAA01 07 Options Extender Boards 497 19 1 Changing the Opt...

Page 466: ...ecurity Bracket 527 24 6 Re Ordering Extra Parts 528 25 Installing a Remote Kit 529 25 1 Installation 529 25 2 Circuit Description 535 25 3 Servicing the Remote Kit Parts 536 25 4 PCB Information 538...

Page 467: ...ne 589 32 1 Operation 589 32 2 Installation 589 32 3 Adjustment 590 32 4 Interface Specification 590 32 5 Circuit Description 591 33 TMAA10 02 Handset 593 33 1 Installation 593 33 2 Radio Programming...

Page 468: ...gramming 608 36 5 Interface Specification 608 37 TMAA10 08 Desktop Microphone 609 37 1 Operation 609 37 2 Installation 609 37 3 Adjustment 610 37 4 Radio Programming 610 37 5 Interface Specification 6...

Page 469: ...ions loom The high density 15 way D range connector mounted on the line interface board fits through the external options connector hole provided in the radio chassis 17 1 Operation One of the control...

Page 470: ...e test equipment used when adjusting RV1 RV2 and RV3 Table 17 1 Line interface board adjustment points Function Selection 1 Selection 2 two wire audio interface DIP1 on DIP2 off four wire audio interf...

Page 471: ...Information on page 476 explains the required input and output line interface connections Note A general description of IOP_GPIO lines used with the line interface board is given in Table 17 6 on page...

Page 472: ...dure for R V1 R V2 and R V3 described in the following section 17 2 4 Adjusting RV1 RV2 and RV3 Setting the Keying Time Delay RV1 The keying time delay circuit is used to prevent the burst of noise oc...

Page 473: ...3 Installing the Line Interface Board Note The line interface board link options must be set before the board is installed in the radio as the top side of the line interface board is not accessible o...

Page 474: ...connector cavity 6 Screw the external options connector to the radio lid using the two screw lock fasteners h Tighten the fasteners to a torque of 0 9N m 8lbf in Important The external options connect...

Page 475: ...line interface board b radio lid h screw lock fasteners c external options connector bung i mounting posts d foam seal j M3x8 self tapping screws e external options connector cavity 1 internal options...

Page 476: ...This signal causes the radio to transmit This normally requires External PTT1 to be set up in the Digital tab of the Programmable I O form and the External PTT 1 tab of the PTT form GPIO2 Busy Gate Th...

Page 477: ...AGND analogue ground 4 AUX_MIC_AUD not connected 5 RX_BEEP_IN not connected 6 AUD_TAP_IN AUD_TAP_IN Programmable tap point into the receive or transmit audio chain 7 RX_AUD not connected 8 RSSI not co...

Page 478: ...c SK2 TXD AUD_TAP_OUT AGND DGND PTT FROM OPT RXD 13V8 AUD_TAP_IN BUSY 2 BUSY AUX GPIO5 KEYING PTT_IN BUSY GATE LINE IN LINE IN LINE OUT LINE OUT AGND 13V8_SW 11 2 1 3 12 9 4 5 6 SK1 15 14 10 11 2 1 3...

Page 479: ...20dB relative to 600 Line Output Filter Response stopband 2 pole 6 pole 12dB octave f 4kHz 36dB octave f 4kHz 17 7 1 Radio With Line Interface Board Receiver Line Output Receiver Frequency Response Re...

Page 480: ...quency Response Bandwidth Response relative to 1kHz 20 deviation below limiting 300Hz to 3kHz 1 3dB relative to 6dB octave Test Signal 0dBm line input audio tap T1 60 deviation at 1kHz Signal to Noise...

Page 481: ...higher than necessary gain of the line driver Line out protection is provided by two zener diodes and the transformer T1 provides isolation The audio interface is capable of using a two or four wire...

Page 482: ...s provided by U9 but if RS 422 is required U9 is removed and replaced by U2 and U10 Also resistors R15 16 43 and 47 need to be fitted 17 8 4 Power Supply The power supply for the line interface board...

Page 483: ...OT323 R1 036 02100 03 RES Pwr 1218 10R 5 1W RV1 042 05100 06 Res Pre TH 10k 6mm Top R2 038 15100 10 RES 0603 10k 1 1 10W RV2 042 05100 06 Res Pre TH 10k 6mm Top R3 038 14100 10 RES 0603 1k0 1 1 10W RV...

Page 484: ...6 1 D4 R1 B1 2 B2 R2 D6 1 E7 R3 D2 1 E12 R4 F8 2 G3 R5 E6 1 E6 R8 E6 1 D5 R9 C6 2 B3 R10 B6 2 A4 R11 C4 1 D2 R12 E6 1 E5 R13 E6 1 E5 R14 C7 1 E4 R15A A7 2 E8 R15 F8 2 G5 R16A A7 2 E8 R16 E8 2 F5 R17 E...

Page 485: ...TM8100 TM8200 Service Manual TMAA01 01 Line Interface Board 485 Tait Electronics Limited November 2007 17 9 3 Line Interface Board Layout top side IPN 220 65202 04...

Page 486: ...486 TMAA01 01 Line Interface Board TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 17 9 4 Line Interface Board Layout bottom side IPN 220 65202 04...

Page 487: ...TM8100 TM8200 Service Manual TMAA01 01 Line Interface Board 487 Tait Electronics Limited November 2007 17 9 5 Line Interface Board Circuit Diagram...

Page 488: ...488 TMAA01 01 Line Interface Board TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 489: ...ontrol lines 18 1 1 Hardware Flow Control Although the serial transmit and receive lines are dedicated connections on the internal options connector the RTS and CTS lines have to be assigned For hardw...

Page 490: ...following instructions refer to items in the diagram on page 491 2 Remove the top cover and lid b from the radio to access the options cavity 3 Remove the external options connector bung c if it is f...

Page 491: ...to be installed correctly in the radio s options cavity the internal options connector loom 1 must be looped in the way shown in the diagram on page 491 9 Plug the unattached end of internal options c...

Page 492: ...tap point out of the receive or transmit audio chain DC coupled 3 AGND analogue ground 4 AUX_MIC_AUD Auxiliary microphone input with electret microphone biasing provided Dynamic microphones are not s...

Page 493: ...1n 50v X7r 10 C18 018 14100 00 Cap 0603 1n 50v X7r 10 LK1 036 14100 10 RES 0805 1k 1 1 8W LK3 036 14100 10 RES 0805 1k 1 1 8W R1 038 15100 10 RES 0603 10k 1 1 10W R2 038 15100 10 RES 0603 10k 1 1 10W...

Page 494: ...494 TMAA01 02 RS 232 Board TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 18 4 2 RS 232 Board Layout top side IPN 220 01740 01...

Page 495: ...TM8100 TM8200 Service Manual TMAA01 02 RS 232 Board 495 Tait Electronics Limited November 2007 18 4 3 RS 232 Board Layout bottom side IPN 220 01740 01...

Page 496: ...496 TMAA01 02 RS 232 Board TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 18 4 4 RS 232 Board Circuit Diagram...

Page 497: ...der board configuration must be completed before the board is installed in the radio as the top side of the options extender board is not accessible once the board is screwed to the radio lid Importan...

Page 498: ...t The maximum current for the 5V supply line is 400mA 19 1 2 RX_BEEP_IN Line If the RX_BEEP_IN line is required on the external options connector it must replace one of the following lines IOP_RSSI AU...

Page 499: ...f it is fitted 4 On the inside of the radio lid place the foam seal d over the external options connector cavity e 5 With the top side of the options extender board f facing the radio lid guide the ex...

Page 500: ...Figure 19 2 8 Plug the unattached end of internal options connector loom 1 into the internal options connector on the radio main PCB 9 Refit the radio lid and top cover to the radio and screw the ext...

Page 501: ...product code TMAA30 01 Table 19 3 Internal options connector pins and signals Pin Connector Signal Description 1 13V8_SW switched 13V8 supply from the radio 2 AUD_TAP_OUT Programmable tap point out of...

Page 502: ...I2 analogue RSSI output 15 IOP_GPIO13 programmable function and direction 14 IOP_GPIO2c programmable function and direction 13 IOP_GPIO3c programmable function and direction 10 IOP_GPIO4c programmable...

Page 503: ...A TVS 36V SOD123FL D16 001 10360 00 DIODE SMF36A TVS 36V SOD123FL D17 001 10360 00 DIODE SMF36A TVS 36V SOD123FL D18 001 10099 01 DIODE BAV99W dual smsig D19 001 10099 01 DIODE BAV99W dual smsig IC2 0...

Page 504: ...1 E4 1B3 J2 G4 1B3 J3 F4 1B4 L1 E9 1B10 L2 E4 1E3 L3 B2 1C3 L4 B2 1E4 L5 F4 1F3 L6 C3 1D4 L7 D4 1E4 L8 C3 1D3 L9 C9 1B11 L10 D7 1B7 L11 B9 1B12 L12 D2 1H3 L13 D2 1F3 L14 E1 1G3 L15 D6 1B7 L16 D1 1H12...

Page 505: ...nual TMAA01 05 and TMAA01 07 Options Extender Boards 505 Tait Electronics Limited November 2007 19 4 3 Options Extender Board Layout top side 19 4 4 Options Extender Board Layout bottom side IPN 220 6...

Page 506: ...BAV99W GND_OPT_ESD 470NF I OPAD 0 13V8_OPT_ESD 13V8_OPT_ESD 13V8_OPT_ESD BAV99W 0 10NF 10NF 10NF 0 0 0 0 23MAR07 CHRIS K 04A 01A 05A DNI DNI DNI 13V8_OPT_ESD 0 GND_OPT_ESD 0 5V0_REG CHRIS K ADAM D ADA...

Page 507: ...y the radio programming Note The TMAA02 02 DTMF microphone is not suitable for use with PTT signalling An example of PTT signalling is leading ANI 20 1 Installation Installing the Microphone Important...

Page 508: ...5kHz for narrow bandwidth radios 20 3 Radio Programming The following table shows the settings required for CH_GPIO1 in the Programmable I O form of the programming application When CH_GPIO1 is set t...

Page 509: ...one connector and shows the interface between the DTMF microphone and the radio Table 20 2 DTMF microphone connector pins and signals Pin Signal Colour Description 1 not connected 2 13V8_SW red power...

Page 510: ...ription The microphone has a standard 12 key telephone keypad When one of the keypad keys is pressed a DTMF tone specific to that key is generated on the MIC_AUD line pin 5 For the duration of the ton...

Page 511: ...l display control head the TMAA02 07 kit is used refer to TMAA02 07 Concealed Microphone on page 519 21 1 Installation Important This equipment contains devices which are susceptible to damage from st...

Page 512: ...e negative wire to AGND 1 Note The positive wire on the microphone capsule is identified by a red stripe 6 On the control head PCB remove R11 1 and solder P2 1 and P3 1 in the positions shown 7 Plug S...

Page 513: ...ta from the control head shift register 3 OE enables the output of the shift register of the audio switch 4 CH_SPI_CLK SPI clock signal to clock microphone select data into concealed and dynamic micro...

Page 514: ...Xstr SMD BC857BW PNP SOT323 Q3 000 10084 62 Xstr BC846S Dual SOT363 NPN Q4 001 10099 01 Diode BAV99w Dual Ss R1 038 14220 00 Res 0603 2k2 1 16w 5 R2 038 14680 00 Res 0603 6k8 1 16w 5 R3 038 14470 00...

Page 515: ...TM8200 Service Manual TMAA02 06 Support Kit for Concealed and Dynamic Microphones 515 Tait Electronics Limited November 2007 21 4 2 Concealed and Dynamic Microphone Support Board top side IPN 220 017...

Page 516: ...A02 06 Support Kit for Concealed and Dynamic Microphones TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 21 4 3 Concealed and Dynamic Microphone Support Board bottom side IPN 220 0...

Page 517: ...TM8100 TM8200 Service Manual TMAA02 06 Support Kit for Concealed and Dynamic Microphones 517 Tait Electronics Limited November 2007 21 4 4 Concealed and Dynamic Microphone Board Circuit Diagram...

Page 518: ...518 TMAA02 06 Support Kit for Concealed and Dynamic Microphones TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 519: ...to damage from static discharges Refer to ESD Precautions on page 112 for more information Removing the Radio Control Head To install the concealed microphone capsule the control head must be removed...

Page 520: ...microphone cavity 4 On the control head board solder the negative wire to the COV MIC pad e and the positive concealed microphone wire to the COV MIC pad f Note The positive wire on the micro phone c...

Page 521: ...r keys depend on the radio model as follows For detailed operating instructions refer to the radio user s guides TM8100 User s Guide MMA 00002 xx TM8235 User s Guide MMA 00051 xx TM8250 and TM8255 Use...

Page 522: ...the radio user It must be within easy reach of the user but in such a position that the microphone PTT key cannot be inadvertently activated or jammed on 23 2 Radio Programming The radio does not nee...

Page 523: ...es not need to be programmed to recognize the presence of a keypad microphone there are no fields in the programming application that need to be configured DTMF dialling is not available for radios wi...

Page 524: ...e on the radio s microphone connector and shows the interface between the keypad microphone and the radio Table 23 1 Keypad microphone connector pins and signals Pin Signal Colour Description 1 RX aud...

Page 525: ...he TMAA03 02 security bracket are illustrated in Figure 24 1 Figure 24 1 Parts of the TMAA03 02 security bracket Description Quantity B security bracket cradle base 1 E short mounting rails for TM8100...

Page 526: ...erwise there is a risk that the whole assembly of the radio and secu rity bracket may become loose over time or as a result of serious impact Note Because some model control heads are taller than othe...

Page 527: ...ty Bracket Remove the radio from the security bracket as follows 1 Open the slide locks by inserting the slide lock key into the keyhole Rotate the key 90 it will slip into a detent and pull The pull...

Page 528: ...ay be installed at different times Part Part Number Quantity Security Crdl Key TM8 slide lock key 319 60004 XX1 1 Contact Technical Support for the exact IPN 2 Security Crdl Mtg Short TM8 short mounti...

Page 529: ...not compatible with TMAA03 03 TMAC34 0T or TMAC34 1T control head interfaces 25 1 Installation Warning Mount the remote U bracket with the remote control head assembly and the U bracket with the radi...

Page 530: ...e remote U bracket 5 Mount the U bracket in the required position and install the radio body in the U bracket 6 Route the remote cable e between the remote control head assembly and the radio body 25...

Page 531: ...m the radio body The control head is now separate from the radio body 25 1 4 Installing the Torso Interface The torso interface must be installed onto the radio body in place of the control head 1 Scr...

Page 532: ...emote U bracket in the chosen mounting position using the self drilling screws provided Use all four screws provided 25 1 6 Installing the Control Head Interface With the control head separated from t...

Page 533: ...mportant When mounting the U bracket check whether the mounting surface needs to be reinforced Important Install the U bracket using at least four screws 1 If the U bracket is being mounted over a cur...

Page 534: ...emote Cable Grommets Install both the remote cable grommets using the following procedure Important The remote cable grommets must be installed whenever the remote cable is plugged into the RJ45 socke...

Page 535: ...November 2007 25 2 Circuit Description Figure 25 3 shows a block diagram of the remote control head installation The control heads contain circuit boards with RS 485 driver components and an audio amp...

Page 536: ...able from the RJ45 connector 2 Release the clips of the PCB bracket E and remove the control head board B 3 Disconnect the torso interface loom C 4 Unscrew the four PT type screws D and remove the PCB...

Page 537: ...carried out in reverse order of disassembly 1 Remove the remote cable from the RJ45 connector 2 Unscrew the seven PT type screws B and remove the PCB C 3 Remove the control head interface loom not ill...

Page 538: ...A TH J101 240 10000 11 Conn SMD 18w Skt M Match Q101 000 10084 73 Xstr BC847BPNNPN PNP SOT363 R101 038 10000 00 Res 0603 Zero 0hm 1 16w 5 R102 036 03100 10 Res 2512 100R 5 1W R103 036 03100 10 Res 251...

Page 539: ...1C4 D103 G4 1E2 D104 J4 1E3 D105 F4 1D4 1D3 D106 D4 1B2 D107 M4 1D7 E101 F3 1B2 E102 F4 1B3 E103 G1 1C3 E104 G1 1C3 E105 K3 1D1 E106 D3 1D1 E107 E4 1D2 E108 E4 1C2 E109 K1 1D5 F101 F3 1D2 J100 E4 1C1...

Page 540: ...540 Installing a Remote Kit TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Board Layout IPN 220 02122 02...

Page 541: ...TM8100 TM8200 Service Manual Installing a Remote Kit 541 Tait Electronics Limited November 2007 Circuit Diagram...

Page 542: ...240 10000 11 Conn SMD 18w Skt M Match J3 240 00016 00 Conn RJ45 Shld 8P8C LP RA TH Q1 000 10561 60 XSTR BCX56 16 AF NPN SOT89 R1 038 13100 10 Res 0603 100R 1 10w 1 R3 038 15100 10 Res 0603 10k 1 10w...

Page 543: ...TM8100 TM8200 Service Manual Installing a Remote Kit 543 Tait Electronics Limited November 2007 Board Layout IPN 220 02123 01...

Page 544: ...544 Installing a Remote Kit TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Circuit Diagram...

Page 545: ...racket with the radio body securely These units must not break loose in the event of a collision Unse cured radio units are dangerous to the vehicle occupants Caution Observe the installation warnings...

Page 546: ...in the remote U bracket 5 Mount the U bracket in the required position and install the radio body in the U bracket 6 Route the remote cable e between the remote control head assembly and the radio bod...

Page 547: ...ontrol head loom from the radio body The control head is now separate from the radio body 26 1 4 Installing the Torso Interface The torso interface must be installed onto the radio body in place of th...

Page 548: ...Installing the Control Head Interface With the control head separated from the radio body the control head interface c must be installed on the rear of the control head 1 Undo the two Torx T 20 screws...

Page 549: ...osition using the two thumb screws provided 26 1 7 Mounting the U Bracket and Installing the Radio Body Mounting the U Bracket Install the U bracket on any sufficiently flat surface using self drillin...

Page 550: ...gs in the holes 2 Plug one end of the remote cable into the control head interface 3 Run the remote cable to the torso interface and plug it into the RJ45 connector without a bung Installing the Remot...

Page 551: ...ics Limited November 2007 26 2 Circuit Description Figure 26 3 shows a block diagram of the remote control head installation Both control heads contain a circuit board with audio amplifiers and RS 485...

Page 552: ...rder of disassembly 1 Release the clip of the PCB bracket E and remove the control head board B 2 Disconnect the torso interface loom C 3 Unscrew the four PT type screws D and remove the PCB bracket E...

Page 553: ...onnector loom Re assembly is carried out in reverse order of disassembly 1 Unscrew the seven PT type screws B and remove the PCB C 2 Remove the control head interface loom not illustrated Figure 26 5...

Page 554: ...04 001 10000 99 Diode SMD BAV99 D Sw SOT23 D110 001 10084 91 Diode SMD BZX84C9V1 Zen SOT23 D201 001 10000 99 Diode SMD BAV99 D Sw SOT23 D211 001 10000 99 Diode SMD BAV99 D Sw SOT23 D300 001 10000 99 D...

Page 555: ...ld RJ45 Shortbody Plg 360 02022 00 Grommet Mic TMA Grid Reference List C1 D1 D7 C100 J3 E3 C101 L4 E3 C102 J4 E3 C103 J4 E3 C110 L4 F4 C300 M5 G2 C301 N5 G3 C310 M2 G4 C311 N2 G4 C312 M2 G5 C320 P4 D8...

Page 556: ...556 Installing an Enhanced Remote Kit TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Board Layout IPN 220 01721 04...

Page 557: ...TM8100 TM8200 Service Manual Installing an Enhanced Remote Kit 557 Tait Electronics Limited November 2007 Circuit Diagram...

Page 558: ...0603 0R R21 038 10000 00 RES 0603 0R R30 038 13390 10 RES 0603 390R 1 1 10W R31 038 13390 10 RES 0603 390R 1 1 10W R40 036 00000 01 RES 1206 0R 5 0 25W R103 038 12100 10 RES 0603 10R 1 1 10W R104 038...

Page 559: ...TM8100 TM8200 Service Manual Installing an Enhanced Remote Kit 559 Tait Electronics Limited November 2007 Board Layout IPN 220 01720 05...

Page 560: ...560 Installing an Enhanced Remote Kit TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 Circuit Diagram...

Page 561: ...TM8250 TM8255 extended remote upgrade kit installation instructions 402 00047 xx TMAA11 07 TM8250 TM8255 extended remote dual head upgrade kit with a standard microphone installation instructions 402...

Page 562: ...nnector PL100 pins and signals Pinout Pin Signal name Description 1 AGND Analog ground 2 Not connected 3 Not connected 4 13V8_BATT 13V8 power input Table 27 2 Sockets SK201 SK202 SK203 pins and signal...

Page 563: ...10081 06 IND 1806 BLM41P750S EMI suppn E8 057 10081 06 IND 1806 BLM41P750S EMI suppn E9 057 10081 06 IND 1806 BLM41P750S EMI suppn F1 265 10300 10 FUSE 1206 3A 63V IC1 000 10409 00 XSTR SMD BTS409L Mf...

Page 564: ...564 TMAA03 31 Control Head Interface Box TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 27 2 2 Control Head Interface Box Board Layouts top side IPN 220 02174 03...

Page 565: ...TM8100 TM8200 Service Manual TMAA03 31 Control Head Interface Box 565 Tait Electronics Limited November 2007 27 2 3 Control Head Interface Box Board Layouts bottom side IPN 220 02174 03...

Page 566: ...9 R5 R7 C20 5 7 6 IC7 R23 C50 PL4HR SM15T30A 1NF 470NF BZX84 5 1V 1NF 47K 2 2UF 15V 1K BZX84 4 7K 1NF 1NF 220 220 TS912 CH_ON_OFF_OUT 13V8_SW RD_RS485 MIC_AUD BAT54AW 30V 03A RIAN DE ML DE RIAN 02A SS...

Page 567: ...ead upgrade kit with a standard microphone installation instructions 402 00052 xx TMAA11 08 TM8250 TM8255 extended remote dual head upgrade kit with a keypad microphone installation instructions 402 0...

Page 568: ...6V 10 0805 X7R C40 015 27100 08 CAP cer 1uF 16V 10 0805 X7R C41 015 27100 08 CAP cer 1uF 16V 10 0805 X7R C42 018 13270 00 CAP 270p 50V NPO 5 0603 C43 018 13270 00 CAP 270p 50V NPO 5 0603 C44 018 13270...

Page 569: ...03 100k 1 1 10W R32 038 14220 10 RES 0603 2K2 1 1 10W R33 038 14220 10 RES 0603 2K2 1 1 10W R34 038 16100 10 RES 0603 100k 1 1 10W R35 038 16100 10 RES 0603 100k 1 1 10W R36 038 16100 10 RES 0603 100k...

Page 570: ...570 TMAA03 34 Extender Box TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 28 2 2 Extender Box Board Layouts top side IPN 220 02180 02...

Page 571: ...TM8100 TM8200 Service Manual TMAA03 34 Extender Box 571 Tait Electronics Limited November 2007 28 2 3 Extender Box Board Layouts bottom side IPN 220 02180 02...

Page 572: ...2_700C MOUNTING AGND DGND TS912 100NF 100NF 100NF 100NF 100NF 100NF 100NF 100NF 27K 4 7UF 100K 100K 1K 270PF 8V 2 2NF 2 2K 1UF 2 2K 1UF 270PF 470NF 1NF BAV99 4V 68 1K 100NF 100NF TS912 270PF 47K 47K M...

Page 573: ...ansmit tail is required settings in the following forms must be configured in both radios PTT form TM8100 radios only refer to Table 29 4 Basic Settings form Subaudible Signalling tab TM8200 radios an...

Page 574: ...Table 29 2 Crossband settings in the Programmable I O form Digital tab Pin Direction Label Action Active Debounce Signal State Mirrored To AUX_GPI1 Input PTT_INS External PTT 1 Low 10 None None AUX_G...

Page 575: ...tolerance of 200Hz on a 12 5kHz narrow bandwidth channel 29 4 Interface Specification The following table and diagram summarizes the signals used for the crossband linking cable on the radios auxilia...

Page 576: ...6V3 10 X5R C10 018 27470 00 CAP CER 0603 4U7 6V3 10 X5R J1 240 00031 00 PLG 15wy drng UL CSA pnl mtg R1 038 14120 10 RES 0603 1k2 1 1 10W R2 038 14120 10 RES 0603 1k2 1 1 10W R3 038 14120 10 RES 0603...

Page 577: ...IN GPIO6 MIC_AUD GPIO4 GPI2 1 2K 5V 78L05 C4 U1 1 3 4 5 15 13 12 8 9 11 14 10 7 2 6 16 C7 C8 C5 C6 C1 P1 P6 P7 P4 P2 R6 C10 P8 P3 P5 J1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 U2 2 3 6 7 8 1 TP1 TP2 TP3 R...

Page 578: ...578 TMAA04 04 Crossband Linking Cable TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 579: ...uxiliary connector is removed Therefore once the TMAA04 05 ignition sense kit is installed mount the radio in areas where it is not exposed to water dust or other environmental hazards 30 1 Hardware C...

Page 580: ...ield set how the radio responds when the radio receives a signal to power on from the vehicle s ignition signal Select either Power On or Previous State Programmable I O form Digital tab In the Digita...

Page 581: ...nt where there is water dust or other environmental hazards 31 1 Cross band Repeater Operation The external interface cable in the TMAA04 06 kit is used to connect the auxiliary ports of two radios al...

Page 582: ...d return before re transmission resumes Priority scanning also affects the transmit timer during cross band repeater transmissions If a non priority channel in the group is captured the radio will re...

Page 583: ...ansmission will occur However if the other radio then receives a valid signal the radio will attempt to re broadcast this over the other signal Set Tx Inhibit to Busy or Mute to prevent this re transm...

Page 584: ...cable s external interface connector can be used to connect a TM8260 dual radio system to the vehicle s ignition signal This will turn the radio system off when the ignition key is off to avoid drain...

Page 585: ...rive the same external alert device Connect the pins separately to drive separate external alert devices Important The high current sink capability of the radio s auxiliary lines cannot be accessed wi...

Page 586: ...e 7 AUD_TAP_IN audio tap input 8 13V8 power supply to GPS device 9 AUX_GPIO6 external alert 12 AUX_GPI1 PTT input 13 AUD_TAP_OUT audio tap output 15 AGND ground Table 31 8 GPS socket pins and signals...

Page 587: ...3k 1 1 10W R6 038 14680 10 RES 0603 6k8 1 1 10W R7 038 13120 00 RES 0603 120R 5 1 10W R9 036 14680 10 RES 0805 6k8 1 1 8W R11 038 10000 00 RES 0603 0R 5 1 10W SA 938 10001 01 SMT Alloy Lead Free sac 2...

Page 588: ...GND GPI2 AUD_TAP_OUT GPIO6 IGN SENSE SIGNAL FROM VEHICLE KEY SWITCH R2 NOT FITTED R8 NOT FITTED R10 NOT FITTED 33K Fri Apr 07 14 09 31 2006 M LEAN BC847BS 6 8K BC847BS 1NF 120 82 0 47K 33NF SMF28A PD4...

Page 589: ...e microphone and release the PTT key when you have finished talking Note The monitor key can be locked in the on position To do this hold the monitor key down and slide the monitor key towards you The...

Page 590: ...aximum by rotating R5 counterclockwise 32 4 Interface Specification The following table and diagram summarizes the signals used for the desktop microphone on the radio s microphone connector and shows...

Page 591: ...sule and contains a pre amplifier Q1 to boost the microphone level to that required by the radio Power for the pre amplifier is provided by the electret microphone bias circuit within the radio R5 is...

Page 592: ...592 TMAA10 01 Desktop Microphone TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 593: ...from any connected remote speaker and from the handset earpiece Using private handset mode the radios internal and external speakers are muted and the call can only be heard from the handset earpiece...

Page 594: ...installed when ever the handset to radio cord is plugged into the microphone socket When installed the grommet has two functions to prevent damage to the microphone socket when there is movement of th...

Page 595: ...rammable I O form of the radio s programming application Refer to the online help of the programming application for more information Note If private handset mode is programmed then no audio will be h...

Page 596: ...een the handset and the radio Table 33 5 Handset microphone connector pins and signals Pin Signal HandsetPCB Connector Colour Description 1 RX_AUD 8 brown receive audio to handset 2 not connected 3 no...

Page 597: ...are included with each kit along with four mounting screws and washers 34 1 Installation Remote Speaker Mounting 1 Choose a mounting position for the remote speaker where it will not interfere with t...

Page 598: ...s the positive wire and receptacle into the position nearest to the red wire and the negative wire and receptacle into the position nearest to the black wire 2 TMAA10 06 remote speaker 40W 50W radios...

Page 599: ...Hands Free Kit Your radio may able to detect the sound of your voice so that you can make calls without using the PTT key Voice operated transmit VOX is turned on and off either by using a function ke...

Page 600: ...be taken to avoid routing any cables near vehi cle pedal controls steering column and other moving parts Installing the Remote Microphone 1 Choose one of the three mounting options provided for the r...

Page 601: ...ssion When Mic On Hook field is selected in the PTT tab of the PTT form Remote PTT Settings in the Programmable I O Form The following table shows the settings required in the Programmable I O form of...

Page 602: ...d hands free kits on the radio s auxiliary connector and shows the interface between the kits and the radio Table 35 3 VOX settings in the PTT form External PTT 2 or VOX tab Field Setting EPTT2 or VOX...

Page 603: ...ce voltage for the regulator is provided by AUX_GPIO4 line The remote microphone signal is fed via AUX_MIC_AUD and an input selector to the radio s internal microphone amplifier The microphone input s...

Page 604: ...W NPN SOT323 Q2 000 10085 71 Xstr SMD BC857BW PNP SOT323 Q3 000 10084 71 Xstr BC847BW NPN SOT323 Q4 000 10084 71 Xstr BC847BW NPN SOT323 R1 038 14220 00 Res 0603 2k2 1 16w 5 R3 038 14390 10 Res 0603 3...

Page 605: ...TM8100 TM8200 Service Manual TMAA10 04 Remote PTT Kit and TMAA10 05 Hands Free Kit 605 Tait Electronics Limited November 2007 35 7 2 Pre Amplifier Board Layout IPN 220 01711 01 IPN 220 01711 01...

Page 606: ...606 TMAA10 04 Remote PTT Kit and TMAA10 05 Hands Free Kit TM8100 TM8200 Service Manual Tait Electronics Limited November 2007 35 7 3 Pre Amplifier Board Circuit Diagram...

Page 607: ...ar press the TRANSMIT key PTT to transmit Speak clearly into the microphone and release the TRANSMIT key when you have finished talking Note The MONITOR key can be locked in the on position To do this...

Page 608: ...36 4 Radio Programming The desktop microphone has an internal pre amplifier Therefore the dynamic microphone support in the UI Preferences form of the radio s programming application should not be ena...

Page 609: ...heck whether the channel is clear When Monitor is active the MONITOR LED lights up Press the MONITOR key again to turn Monitor off The LED goes out If the channel is clear press the PTT key to transmi...

Page 610: ...ic Gain field to Normal and clear the Enable Options Board Preamp check box These are both default settings TM8200 radios In the Audio tab clear the Dynamic Mic Support check box This is the default s...

Page 611: ...itor check box and select an option in the Hookswitch Monitor Overrides field Conventional Networks Basic Settings form Receiver Monitoring tab Refer to the online help of the programming application...

Page 612: ...612 TMAA10 08 Desktop Microphone TM8100 TM8200 Service Manual Tait Electronics Limited November 2007...

Page 613: ...ions test set The diagram below shows the front panel of the test unit 38 1 Test Equipment Setup The diagram on the following page shows how the test unit is connected to the radio the test PC and the...

Page 614: ...connector BNC computer connector RJ12 serial port DB9 speaker connector banana plugs AC input BNC audio monitor out BNC AUDIO IN HI BNC AUDIO OUT BNC RF in out N type power connector TMAA23 02 cable...

Page 615: ...witch is used to switch between Mod Audio Audio Tap In Mic Audio and Off no audio signal With the Tait Orca portables this switch can be used for setting up dual point modulation by applying modulatio...

Page 616: ...disconnect the radio s internal speaker on mobiles If the switch is set to Speaker or Load this simulates an external speaker being connected in parallel to the radio s internal speaker With all sett...

Page 617: ...1 032 31820 01 Res M F Pwr 17x5 8e2 5 2 5w R2 032 31820 01 Res M F Pwr 17x5 8e2 5 2 5w R3 030 55120 20 Res Flm 4x1 6 12k 5 0 4w R4 030 53560 20 Res Flm 4x1 6 560e 5 0 4w R5 030 54270 20 Res Flm 4x1 6...

Page 618: ...nly Refer to the parts list for actual values used SPEAKER 4 SPKR 8 2 SHOULD BE DPTT IPN 032 31820 01 IPN 250 00010 19 not part of PCB not fitted not fitted not fitted Portable Mobile Mobile Portable...

Page 619: ...FY REVERSE COMPILE OR REVERSE ASSEMBLE ANY SOFTWARE OR FIRMWARE IN WHOLE OR PART Important Notice THE SOFTWARE OR FIRMWARE MAY CONTAIN OPEN SOURCE SOFTWARE COMPONENTS OPEN SOURCE COMPONENTS OPEN SOURC...

Page 620: ...SOLE AND TOTAL LIABILITY FOR ANY SUCH CLAIM SHALL BE LIMITED AT THE OPTION OF TAIT TO THE REPAIR OR REPLACEMENT OF THE SOFTWARE OR FIRMWARE OR THE REFUND OF THE PURCHASE PRICE OF THE SOFTWARE OR FIRM...

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