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This manual contains information to service technicians for carrying out level-1 and level-2 repairs of TM8100 and TM8200 radios and accessories.
This manual describes the following hardware and software versions, including internal part numbers (IPNs) of the boards.
Lists the available documentation associated with the TM8100/TM8200 product, including manuals and PCB information.
Details the issue number, publication date, and description of changes for each manual release.
Explains the four types of alerts (warning, caution, important, note) used within the manual and their associated symbols.
Provides a list of abbreviations used throughout the manual with their corresponding descriptions.
Overview of TM8100 and TM8200 series radios, covering frequency bands, RF output power, accessories, and product codes.
Describes the mechanical design, architecture, operation in receive/transmit modes, and connectors of the radio.
Describes and illustrates the circuitry of the main board and control-head boards, covering transmitter, receiver, synthesizer, CODEC, power supply, interface, and digital board.
Describes techniques and processes for servicing the radio correctly, including repair levels, tools, precautions, and CCTM.
Describes how to remove and mount the control head, disassemble and reassemble the radio body, and disassemble and reassemble control heads.
Outlines the sequence of tasks for servicing a radio, including initial inspection, fault diagnosis, repair, final inspection, and administration.
Covers fault diagnosis procedures for the power-supply circuitry, divided into tasks for checking SMPS, regulators, power-up configuration, and external power.
Guides on diagnosing faults in signals output from or input to the radio's internal circuitry via various connectors.
Details fault diagnosis procedures for the frequency synthesizer, including initial checks, RF PLL, and FCL circuitry diagnostics.
Covers the diagnosis of faults in the receiver circuitry, including sensitivity issues, RSSI readings, radio mute, and distortion.
Covers diagnosis of faults in the 40W/50W and 30W/35W transmitter circuitry, focusing on power output issues.
Covers diagnosis of faults in the 25W transmitter circuitry, focusing on power output and biasing issues.
Covers diagnosis of faults in the CODEC and audio circuitry, addressing speaker audio, modulation, and receiver issues.
Provides fault finding procedures for the graphical display control head, covering power supply, LCD, LEDs, keypad, speaker, and PTT.
Covers fault finding for control heads with 1-, 2-, or 3-digit displays, addressing display, LED, keypad, speaker, and volume control issues.
Lists all serviceable parts for the radio body, control heads with graphical display, and control heads with 1-, 2-, or 3-digit display.
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