OHAUS 71208792 Manuel D'instructions page 5

USB Interface Kit
1. With power removed from the balance, remove any draft shield or draft shield
glass panels, the pan, pan support and any wind ring or adapter ring (sizes and
shapes vary) to fully expose the EMC plate on the top of the balance.
2. Remove the 2 screws and the EMC plate.
NOTE: On some models with angular wind rings, be careful not to lose the 4
corner plastic locating pins where the EMC plate slots over. These are marked "F"
(front) or "B" (back) with the markings facing inwards (note their positions in case
dislodged and needing to be re-installed).
3. Disassemble the top from the bottom housing (depending on model):
a) Small frame models: Remove the 4 feet, then remove the 4 screws inside the
openings uncovered by the removal of each foot.
NOTE: While removing the feet, avoid resting the balance on its top side (over
the load cell cone assembly). If needing to do so, place the protective plastic
cone cover from the kit over the load cell cone assembly to minimize risk of
damage to the load cell (See Figure 2A).
b) Large frame models: Remove the 2 screws (and any grounding clip) on the
top of the balance that were exposed by the removal of the EMC plate.
NOTE: If the balance was trade approved, any sealing sticker covering the
housing screws will need to be removed. In effect, the balance will have to be re-
approved and re-sealed.
4. Carefully lift the top cover from the bottom housing, mindful of the cable connected
to the main PCB assembly.
5. Unplug the cable from the main PCB assembly, then set aside the top cover.
6. Remove the 2 screws securing the COM2 cover plate towards the back and right
of the bottom housing (See Figure 2B). Discard the cover plate and 2 screws.
7. Mount the USB PCB over the corresponding stands, then secure with the 2 screws
provided (See Figure 2C).
8. Connect the PCB cable to: a) the USB PCB, and b) to connector CN6 on the main
PC board on the front of the balance (see Figure 2D). Route the PCB cable
towards the left side of the bottom housing.
9. Re-assemble the balance in the reverse order of the disassembly process, being
careful not to pinch any cables within or between the top and bottom housing.
EN-3