M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
Page 24
MSI-4300 Porta-Weigh Plus/5 Key
•
User Guide
number 2 phillips head screwdriver.
2)
Turn the unit right side up. Pop the front panel out by applying pressure
to the lower left corner of the blue urethane case thus exposing a corner
of the front panel / switch assembly. With a flat screwdriver blade;
carefully pry out the switch from the urethane case by working the
screwdriver up the left edge of the switch assembly. Be careful not to
insert the screwdriver too deep as you may damage the internal elec-
tronics.
3)
Fold the switch assembly to the left side of the unit, exposing the
battery and the printed circuit board.
4)
Pull the battery connector off the battery. Remove the battery by tilting
it up sideways.
5)
Install the new battery by tilting it in sideways and wedging it in the
small indented region between the printed circuit board and the case
wall.
6)
Reconnect the battery connector. Check for operation by pushing any
key on the front panel and ensuring that the indicator LED is lighted. If
it does not, check that the keyboard connector is still seated properly
and the battery is fresh.
7)
Replace the front panel / switch assembly by centering it over the open
area and pressing evenly around the edges until it seals.
8)
Replace the three screws. Make sure the screw seal gaskets are in good
condition.
INFRARED REMOTE COMMENTS
•
Due to the sensitivity required to allow for full sunlight operation, it is
possible to overload the input to the infrared remote receiver in the
scale if the remote is too close. This situtation is characterized by
erratic remotely controlled operation. The simple remedy for this is to
not aim directly at the scale, but aim slightly off center when very
close.
•
The range of the remote is optimized when the scale is 8 feet or more
off the ground. The infrared sensor is aimed slightly down to help
diminish sunlight overload. When the scale is closer to the ground, aim
the remote up into the infrared window from below. If the scale is used
normally very low to the ground it is sometimes possible to bounce the
infrared signal off the ground and up into the sensor.
•
Using SHIFT key functions requires that the keys are entered in rapid
fashion. If more than five seconds pass between the SHIFT key and
subsequent key presses, the scale will forget that you pushed SHIFT.
This could mean, for example, that the scale will turn off rather than go
into the test function (Shift, Power).
