Chapter 5
Maintenance and Repair
P/N 57150002, Revision 5.0 5 - 55 Trimble S, VX, SPS & RTS Service Manual
F
Horizontal Turning Unit replacement
Performance
Item Performance Action Results Notes
1 Place total station in
instrument stand.
2 Remove cable from
base unit.
A. Open the servo side
cover, see page 5-15
B. Disconnect the cable
from base unit to IPC
board.
3 Replace horizontal
turning unit.
A. Remove the four
screws.
B. Replace the horizontal
turning unit and tighten
the four screws.
180 Ncm. Use a torque wrench
with a torx T20 bit.
Fig. 5-53 Horizontal turning unit replacement
4 Connect cable from
base unit.
Connect cable and mount
the servo side cover, see
page 5-15.
5 Intialize the
instrument with new
HTU constants.
See page 6-7.
Cable
180 Ncm /
15.9 lbfin
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