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Tait TM8235 Service Manual

Also see for TM8105: Applications manualUser guideUser manual

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Contents
  1. contact information
  2. Table Of Contents
  3. Table Of Contents
  4. Issue
  5. Associated Documentation
  6. Publication Record
  7. Abbreviations
  8. Chapter 1 Description of the Radio
  9. Introduction
  10. frequency bands
  11. product codes
  12. compliance information
  13. Description
  14. user interfaces
  15. microphone connector
  16. hardware and software architecture
  17. operation in receive mode
  18. operation in transmit mode
  19. Circuit Descriptions
  20. transmitter circuitry
  21. receiver circuitry
  22. frequency synthesizer circuitry
  23. frequency control loop
  24. codec and audio circuitry
  25. power supply circuitry
  26. interface circuitry
  27. digital board
  28. Chapter 2 Servicing the Radio
  29. General Information
  30. servicing precautions
  31. replacing board components
  32. shielding cans and connectors
  33. smt repair techniques
  34. defining frequency bands
  35. visual and audible indications
  36. disassembly and reassembly
  37. Disassembly and Reassembly
  38. disassembling the radio body
  39. reassembling the radio body
  40. disassembling and reassembling the control head
  41. servicing procedures
  42. Servicing Procedures
  43. final tasks
  44. power supply fault finding
  45. Power Supply Fault Finding
  46. interface fault finding
  47. Interface Fault Finding
  48. frequency synthesizer fault finding
  49. Frequency Synthesizer Fault Finding
  50. loop filter
  51. power supply for fcl
  52. vcxo and tcxo outputs
  53. signals at tp501 and tp
  54. vcxo and codec circuitry
  55. receiver fault finding
  56. Receiver Fault Finding
  57. excessive loss of sensitivity
  58. moderate or slight loss of sensitivity
  59. incorrect rssi readings
  60. faulty radio mute
  61. high receiver distortion
  62. Transmitter Fault Finding (40W/50W)
  63. Transmitter Fault Finding (25W)
  64. codec and audio fault finding
  65. CODEC and Audio Fault Finding
  66. faulty speaker audio
  67. no speaker audio at auxiliary connector
  68. faulty receiver
  69. faulty modulation
  70. faulty modulation using auxiliary connector
  71. Fault Finding of Control Head with Graphical Display
  72. power supply faulty
  73. lcd display faulty
  74. lcd backlighting faulty
  75. lcd heating faulty
  76. function key leds or status leds faulty
  77. keypad backlighting faulty
  78. ptt faulty
  79. Fault Finding of Control Head with 1- 2- or 3-Digit Display
  80. spare parts
  81. Spare Parts
  82. Chapter 3 Accessories
  83. TMAA01-01 Line-Interface Board
  84. programming information
  85. power supply
  86. TMAA01-02 RS-232 Board
  87. TMAA01-05 Options-Extender Board
  88. TMAA02-02 DTMF Microphone
  89. TMAA02-06 Support Kit for Concealed & Dynamic Microphones
  90. TMAA02-07 Concealed Microphone
  91. TMAA02-08 Keypad Microphone
  92. TMAA03-02 Security Bracket
  93. installing a remote kit
  94. Installing a Remote Kit
  95. installing an enhanced remote kit
  96. Installing an Enhanced Remote Kit
  97. TMAA04-04 Crossband Linking Cable
  98. operational testing
  99. TMAA04-05 Ignition Sense Kit
  100. TMAA10-01 Desktop Microphone
  101. TMAA10-02 Handset
  102. TMAA10-03 and TMAA10-06 High-Power Remote Speakers
  103. TMAA10-04 Remote PTT Kit and TMAA10-05 Hands-Free Kit
  104. TMAA10-07 Desktop Microphone
  105. TOPA-SV-024 Test Unit
  106. limited warranty
Tait TM8235 Service Manual Manual pdf 64 page image
64 Circuit Descriptions TM8100/TM8200 Service Manual© Tait Electronics Limited June 2006Figure 3.1 Main board hardware architecturePower SupplyReceiverTransmitterFrequencySynthesizerDSPCODECand Audio InterfaceDigital BoardRF ConnectorPowerConnectorControl-HeadConnectorLPF1) PINSwitch1)AuxiliaryConnectorInternal OptionsConnectorMain BoardFPGARISCProc.SerialFlashSRAMFlashMemorypart of transmitter circuitryanalog-to-digital converter 2)digital-to-analog converter 2)part of CODEC and audio circuitry2)1)digitalRFanalogasynchronous serial datasynchronous serial dataCustomLogic
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This manual is suitable for:
TM8105TM8110TM8115TM8235TM8250TM8252TM8255
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