32
K2 K3 | SERVICE MANUAL
By means of the
, connect a
variac to the main inlet as portrayed in (Fig. 36)
Proceed by engaging the switch in (Fig. 35), and gradually
increase the voltage on the variac to 80Vac.
Check all the control LEDs highlighted in (Fig. 37), they
should light up as soon as the variac reaches 80 Vac
output.
Warning: this test is meant to be carried out without the heatsink mounted on the power supply board,
therefore it must be complete within 3 minutes from the time the variac has been turned on.
(Fig. 36)
(Fig. 37)
Check the +/- V Rails:
+/- 165Vdc ±10%
