Removal And Installation Of The Block Style Load Cell Pc Board - OHAUS PA64 Service Manual

CHAPTER 3 MAINTENANCE PROCEDURES

3.3.29 Removal and Installation of the Block Style Load Cell PC Board

1. Remove the Load Cell from the Mounting Plate.
(See previous section.)
Unsolder the Temperature Sensor Board wires.
2.
(See Figure 3-112.)
Unsolder the Position Sensor Assembly from the Block Style Load Cell PC Board.
3.
Ratio Beam Cable
Figure 3-112. Block Style Load Cell PC Board Item Locations.
4. Disconnect the Ratio Beam cable. (See Figure 3-112.)
Remove the Load Cell Board Screw and change the Board. (See Figure 3-112.)
5.
Install new board, ensuring the slot in the board is inserted in the slot in the Load Cell
6.
Frame. (See Figure 3-113.)
When screwing in, first turn the self-tapping Cell Board Screw in a counterclockwise
direction until the first screw thread engages and then tighten it. (See Figure 3-111.)
7. Re-solder the Temperature Sensor Board and the Position Sensor Assembly.
8. Follow instructions in Appendix C to Restore the EEPROM.
Slot
Figure 3-113. Block Style Load Cell PC Board Removed from Load Cell.
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Load Cell
Load Cell
PC Board
Board Screw
CAUTION:
Mounting Screw
3-42
Unsolder Position Sensor
Assembly
Unsolder Temperature
Sensor Wires
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