OHAUS T71P, Service Manual

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CHAPTER 1
GETTING STARTED
7000 Series T71 Indicator Service Manual 1-21 Ohaus Corporation www.ohaus.com
1.10 LEGAL FOR TRADE (LFT)
NOTE : When LFT is set to ON through the LFT sub-menu, and the Security Switch on the Main
PCB is set to ON (see Figure 1-1, page 1-2), the following menu settings cannot be changed:
Span Calibration, Linearity Calibration, Calibration Unit, GEO, LFT, Capacity,
Graduation, Zero Range, Stable Range, AZT, Modes, and Units.
To enable editing of these menu settings, open the Indicator and put the Security Switch on the
Main PCB in the OFF position. Then set the LFT menu item to OFF, as follows:
1. Press and hold TARE/Menu until MENU LFT OFF appears briefly, followed by MENU
CALIBRATION. Press No .
2. S.E.t.U.P appears. Press Yes . Then press No until LFt appears. Press Yes .
3. OFF appears. Press Yes .
4. LFt appears again. Press No . Then press Exit to return to the current application
mode.
5. It is now possible to use the abovementioned menus.
After the Security Switch has been turned off, before it can be used in a trade approved
application, it must be inspected in accordance with local weights and measures regulations.
The weights and measures official may apply a wire or paper security seal as shown below.
Figure 1-12. T71P Wire Seal. Figure 1-13. T71P Paper Seal.
Figure 1-14. T71XW Wire Seal
Figure 1-15. T71XW Paper Seal