User's Guide ______________________________________________________________________
212 _________________________________________________________________ M210667EN-C
page 210 as example. Disconnect the three plugs at the rear of the
LTC112 board.
3.
Check if it is necessary to clean the measurement unit windows
from the inside. Wipe the window panes with a soft, lint-free cloth
and normal glass-cleaner or isopropyl alcohol. Be careful not to
scratch the window surfaces.
4.
Open five hex-socket screws, size 2.5 (see Figure 122 below), from
the measurement CPU board and remove it from the optics unit.
Remove all connectors.
1104-110
Figure 122 Fastening Screws of LTC112
CAUTION
Handle the board carefully. Do not touch the components on the board to
avoid ESD damage to them. Ground yourself before attempting to touch
the board.
CAUTION
Do not let the board get wet.
5.
Replace the LTC112 and tighten all five fastening screws carefully.
Attach all connectors.
6.
The spare LTC112 board is fully adjusted and tested, no additional
adjustments are necessary.
7.
After replacing the LTC112 board, pay attention to the correct
position of the optics unit inside the measurement unit enclosure. It
should be mounted in parallel to the enclosure walls.
8.
Reconnect the three plugs at the rear end of the LTC112 board.
9.
Tighten the two fastening screws and the bolt carefully.
10. Close the measurement unit carefully. Pay attention to the position
of the cover seal.