IM 61A YHC1-E-A
3rd Edition: May 2008
Page 12 of 34
Battery Installation & Removal – all YHC models
The YHC monitors battery condition and displays a “REPLACE BATTERY” notice when the batteries get
low. The YHC will function for approximately one (1) hour after the notice is posted on the display.
To install batteries, remove the YHC from the soft case (if used) and remove the large hand strap screw from
rear of YHC using a flat screw driver or coin. Remove protective boot and turn the YHC face down on a
work surface. Use a flat screw driver to loosen the captive battery door screw and remove the door. Six (6)
AA batteries are required. Install the positive (+) end of each battery first and then press the negative (-) end
into place. Follow the + and – signs that are molded into the battery compartment for proper polarity. See
details below. Replace the battery door and tighten the captive door screw. Replace the boot and reinstall the
hand strap screw.
Note: For general purpose models, replace all six (6) AA batteries at once with all alkaline cells.
Do not mix alkaline batteries with each other or with other battery types. Battery replacement is
recommended when the “Replace Batteries” notice is posted on the display; however, the YHC
will function for a time after the notice is posted.
Warning: For Intrinsically Safe YHC models, replace batteries only in Non-Hazardous Areas.
Use only approved AA alkaline batteries in Intrinsically Safe units. Replace AA alkaline batteries
with approved types only - see the Intrinsic Safety Control Drawing in the Appendix of this
manual for a list of approved AA alkaline batteries.
External Connections to YHC
1.
Connector for Communication / AC Adapter Dongle
Each YHC has an electrical connector located at the top of the handheld. The connector provides fast and
secure connection to the Communication / AC Adapter Dongle supplied with each handheld. Simply line up
the key on the Dongle connector with the white arrow on the MFT’s mating connector and insert. To
disconnect, pull on the light gray connector (attached to Dongle lead – see photo below).
The Dongle is used to connect the AC adapter to the YHC when AC power is desired. The Dongle is also
used to connect the YHC to a PC for serial communications. See the “Updating YHC 4150X Firmware and
