TP9100 Service Manual General Information 81
© Tait Electronics Limited May 2005
Tai t F OC U S
Database
An additional source of information to service centers is the Tait FOCUS
call-logging database. (This is accessible on the Technical Support website
also.) All Customer-related technical issues regarding the radios are recorded
on this database. These issues may be raised by both Customers and service
centers. Technical Support resolves the issues and informs the Customer or
service center concerned of the outcome. All issues and their solutions are
available for review by all service centers.
4.2 Tools, Equipment and Spares
Torque-drivers For level-1 and level-2 repairs, excluding SMT repairs of the circuit boards,
the following torque-drivers are required.
■ Torx T6, and Torx T10 driver bits
■ modified 3/16 inch (8mm) long-reach socket bit (IPN 355-00000-21).
Refer to the illustrations in “Disassembly and Reassembly” on page 101 for
the corresponding torque values.
Tools for
SMT Repairs
In general only the standard tools for SMT work are required for level-2
repairs of the circuit boards. In addition, a can-removal tool is recommended
but if none is available, a hot-air tool may be used instead. However, 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 the can being removed as well
as under any adjacent cans. The circuit board might suffer damage as a result.
Test Equipment The following test equipment is required for servicing the radio:
■ test PC (with programming and calibration applications loaded)
■ RF communications test set (audio bandwidth of at least 10kHz)
■ oscilloscope
■ digital current meter (capable of measuring up to 20A)
■ multimeter
■ DC power supply (capable of 7.5V and 3A)
■ service kit
Separate instruments may be used in place of the RF communications test
set. These are an RF signal generator, audio signal generator, audio analyzer,
RF power meter, and modulation meter.
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