Trimble S - Distance unit - DR300+; DR PLUS; Distance unit parts replacement

Chapter 5
Maintenance and Repair
Trimble S, VX, SPS & RTS Service Manual5 - 72 P/N 57150002, Revision 5.0
F
Distance unit - DR300+ / DR PLUS
• Distance unit parts replacement
• Replacements of TPB transmitter board
• Replacements of PRB receiver board
• Replacements of Greywedge assembly
• Replacement of Reference greywedge
Tools and equipment
Distance unit parts replacement
Performance
Description Part number
Torque wrench 3 Ncm T71600278
Torque wrench 30 Ncm T71600279
2 x Torx T8 bit, Torx T7 bit, Torx T6 bit with longer shaft or bended Local tool
Hexagon screw driver 0,9 & 1,3 mm Local tool
Straight point Tweezers Local tool
Item Performance Action Result Notes
1 Remove distance unit
cover.
See page 5-3.
2 Remove board holder Turn centre unit to
second face.
A. Pull up the holder.
B. Disengage the
spring.
During turning watch
the cable and the
tracker transmitter
control board.
3 Disconnect cables. Remove cable A to F,
see.
Cable connections:
A. ribbon cable - connecting both boards
B. coaxial cable - connecting transmitter unit
C. ribbon cable - connecting transmitter board and SFC board
D. ribbon cable - connecting. transmitter board and greywedge
E. coaxial cable - connecting transmitter and receiver board crosswise
F. coaxial cable - connecting transmitter and receiver board crosswise