TB8100 Service Manual Power Management Unit Fault Finding 219© Tait Electronics Limited September 200613.3 Test EquipmentThe following test equipment is required for carrying out the PMU faultfinding procedures:■ PC with the latest version of the TB8100 Service Kit (refer to “Softwareand Firmware Compatibility” on page 220).Note The Calibration Kit is also installed when you install the ServiceKit. If you need to reprogram any factory parameters into thePMU, you will need to use a dongle with the Calibration Kit.■ Operational and calibrated reciter and PA (refer to “Software andFirmware Compatibility” on page 220).■ TB8100 subrack complete with control panel, front panel, andappropriate interconnecting cables.■ Variable voltage DC power supplies:■ For testing the 12V and 24V DC converters and AC converter,power supplies capable of providing 0V to 30V at 3A. Testing theDC converter requires one power supply, testing the AC converterrequires two.■ For testing the 48V DC converter, a power supply capable ofproviding 0V to 60V at 3A.■ Isolation transformer or RCD (residual current device).■ Variable load, 2W dissipation minimum (resistive or electronicpreferred).■ Multimeter.The following items of equipment are also specifically required for testingthe AC converter (refer to “AC Module” on page 240 for more details):■ Modified PFC control card (refer to “Modifying the PFC Control Card”on page 246).■ Oscilloscope.■ Two 1A rectifying diodes (Tait IPN 001-00106-10).■ One high power resistor (greater than 1W 220Ω).
