Welch Allyn Grason-Stadler GSI 17 1717-9700, Service Manual

Page: 94 / 104

10.1 DESCRIPTION
The GSI 17 can be operated via battery power with the 1717-2010
battery option. This battery pack can be used with the GSI-
supplied rechargeable NiCad pack (8410-0060) or with commercially
available size C alkaline batteries.
illustration of the battery pack).
(See Figure 10-3 for an
NOTE:
In no instance will loss of battery power
affect instrument calibration.
10.2 BATTERY PACK INSTALLATION
If your audiometer was purchased with the battery option,
the
pack is already installed in the instrument and you can disregard
this section.
If the GSI 17 battery pack has been purchased separately from the
audiometer, it must be installed into the instrument.
Note that
there are four (4) screws included with your battery pack option.
They will be used to mount the pack into the storage cavity of
the audiometer. On the bottom of the storage cavity, located
close to one side, are four (4) indentations. These are thin
sections of the case which must be punctured to provide entry
holes for the four screws. (See Figure 10-l).
Before installing the battery pack, be sure the instrument is
turned off and unplugged from the AC power (mains) outlet.
Unplug the power cord,
the earphone jacks and the handswitch (if
used) from the back panel of the audiometer. Remove these items
from the instrument. For greatest convenience, remove the top
cover and place the instrument on a flat surface. Proceed as
follows:
a.
b.
Using a Phillips head screw driver, gently apply
pressure to the four indentations, one at a time, to
puncture the case for the screw entry holes. Turning
the screw driver will help achieve the correct hole
size.
Turn the instrument on its side.
pack,
To attach the battery
you will need to hold it in the storage cavity
while inserting the mounting screws. Secure all four
screws.