OHAUS EXPLORER, Service Manual

Page: 107 / 114

APPENDIX C - PRODUCTION MODE CALIBRATION
C-1
C.1 Preparation
1. Remove power from the balance.
2. Remove the pan. It may be necessary to remove two screws holding the display assembly
in place under the balance.
3. Unclip the display module and ease it forward until the module is clear of the edge of the
draft shield or the edge of the top balance cover on 0.01g and 0.1g resolution balances.
If the balance is a Voyager or Explorer Pro install an Explorer display module.
Ensure that the display PCB cannot short to the balance casing.
4. Remove the 2 screws securing the draft shield or top balance cover in place.
5. Remove the plastic pan support clips, if required.
6. Remove the draft shield or top balance cover.
7. Install the manufacturing link in the position shown in (refer to fig in eploader Instructions).
Install the link by pushing down on the top and then rotating it 90° to lock it in position.
If a manufacturing link is not available remove the RF shield and locate the hole through
the printed circuit board that was under the manufacturing link access hole. Short the
two pads just to the front of this hole.
8. Insure that the pan, pan support and any hardware that makes up the dead load is on
the balance. The turn on zero will be written to memory during the calibration.
9. Apply power to the balance. The balance will come on by itself and display MFG before
the normal turn on cycle. This indicates the balance is in manufacturing mode.
C.2 Manufacturing Calibration (MFg) Procedure
1. Press and release Setup. The balance will display MFGTEST.
2. Press and release the right arrow once. The balance will display CAL.
3. Press and release Enter/Print. The balance will display CAL TYPE.
4. Press and release Enter/Print. The balance will display MFg.
5. Press and release Enter/Print. The balance will display WORKING and a changing number.
6. The balance will then display PUT WT and a mass value. Place masses totaling that
value on the pan.
7. Press and release the Enter/Print. The balance will display WORKING and a changing
number.
8. The balance will then display PUT WT and another mass value. Place masses totaling
that value on the pan.
9. Press and release the Enter/Print. The balance will display WORKING and a changing
number.
10. The balance will display CAL SET and return to the Weigh mode.