OHAUS EB SERIES, Service Manual

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CHAPTER 3 REPAIR PROCEDURES
EB Series Scales Service Manual 3-5 Ohaus Corporation www.ohaus.com
3.3.1 Main PC Board Replacement continued
6. Remove Battery and On/Off Switch connector plugs from the Main PC Board.
Figure 3-7. Main PCB, Version 1.
Figure 3-8. Main PCB, Version 2.
7. Unsolder the Load Cell wiring from the Main PC Board. ( Note: Wiring configuration
will change if replacement board is Version 2: see Figures 3-8 and 2-3.
8. On the replacement Main PC Board, install the Battery and Switch connectors.
9. Refer to Figure 2-2 and solder the Load Cell wiring to the replacement Main PC
Board. Make sure that the color coded wiring is installed in the correct locations.
10. Connect the Display Cable to the Main PC Board connector. (See Figure 3-9.)
Figure 3-9. Display Cable installed on Main PCB.
On/Off Switch Connector
Battery Connector
Load Cell Wiring
Load Cell Wiring
setup is different
from Version 1.
(See Figures 2-2
and 2-3.)
On/Off Switch Connector
Battery Connector