-- 6 5 --cdte1de1
Component positions for the test circuit board
The test board has 5 LEDs, as follows:
LED
MAINS On in positions 1 to 6
MOD On in positions 4 to 6
TEMP On if the thermal sensors ST01, ST02 or ST03 are activated, and when the
discharge circuit in the AC unit is overloaded.
TEMP
DC FAIL
On if the primary I GBT, Q5, and/or its control circuits do not work, or if the
thermal sensors ST01 or ST03 are activated.
The
TEMP and DC F AIL L EDs are on or off at the same time.
AC FAIL On if the secondary IGBTs, and/or their control circuits, do not work.
On if the thermal sensor ST02 is, and when the discharge circuit in the AC unit
is overloaded.
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