55 of 132
M-SV-001-EN Rev.E
9. Set aside the driver screws for re-use. 10. Properly discard the old driver board.
3.7.4.2 IGBT Control Card
Installation
Figure 47 - Long Spring Pin
Locations
Figure 48 - Spring Pin
Identification
2. Replace any defective spring pins (bent pin
head or inconsistent height on top with others)
with new ones. Only do this when absolutely
necessary. When removing the spring pins, use
small needle-nose pliers and gently pull straight
up with no lateral movement.
NOTE
Do not attempt to straighten or repair any damaged pins.
1. Verify that all spring pins are present and that
they are in proper alignment (refer to Figure 50
(Seated Spring Pins)). There should be a total of
39 pins. There are two (2) different length spring
pins, if any are replaced, be sure to replace with
the same length spring pin. Figure 47 (Long
Spring Pin Locations) identifies the location of
the “long” spring pins; all other spring pins are
“short.” Figure 48 (Spring Pin Identification) iden-
tifies the difference between the two different
spring pin lengths.
Long Spring
Pins
• • • CAUTION • • •
Do not move or touch any spring pins unless they are not in proper alignment. Damage or misalignment of spring pins can cause
failure of the entire Inverter module.
NOTE
Use extreme care when removing the new driver board and cover from the packaging. The cover snaps into place over the
driver board but could separate. Be sure to hold both to avoid dropping the driver board if separation occurs. If they do become
separated, carefully snap the cover back into place prior to assembly. ESD protection must be worn when handling the driver
board.
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