13.10 Modifying The Pfc Control Card; Figure 13.13 Modifying The Pfc Control Card For Testing The Ac Converter - Tait TB8100 Service Manual

13.10 Modifying the PFC Control Card

Figure 13.13 Modifying the PFC control card for testing the AC converter

246 Power Management Unit Fault Finding
A modified PFC control card is an essential part of the test equipment set-up
(shown in Figure 13.11 on page
run on DC voltage. The modifications described below will bypass the
minimum operating voltage lock-out.
1. Connect a 4k7Ω resistor between pin 9 and pin 10 of IC102.
2. Connect a 2k2Ω resistor between pin 10 and pin 11 of IC102.
9 10 11
4k7 2k2
243) which enables the AC converter to
© Tait Electronics Limited September 2006
TB8100 Service Manual