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VERSAPULSE POWERSUITE FSB # 1: CONT.
Note that there may be systems in the field that may not have a revision “H” HVPS Controller PCB in the High
Voltage Power Supply. So it is important to always verify the revision level of the HVPS Controller PCB and
insure SW6:1-4 is in the proper position, otherwise the following conditions will occur (refer to the chart
below). Keep in mind that all High Voltage Power Supplies shipping from Coherent will already have the
revision “H” Controller PCB.
Rev. Level of the PCB
SW6 in the open position
(Correct)
SW6 in the closed position
(Incorrect)
A - G Disables the shutdown test
function circuit for the
Power Factor Controller
and allows the HVPS to
operate
Enables the /SHUTDOWN/
and disables the HVPS.
H Sets the appropriate over
temperature fault limit at
90
q C.
Sets the over temperature
fault limit at 75
q C, which is
incorrect.
6
:
6
:
6
:
6
:
6:
6:
73
73
6:
&/26('
23(1
6:
32:(568,7(
23(1
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