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5. If the AFAT battery pack or the plastic case containing
batteries is in the PTC-860’s battery compartment, remove
it. Refer to the “Removing the batteries” section on page 44
for the correct procedure.
6. The backup battery switch is located in a small opening just
inside the battery compartment and to the right, when the
PTC is facedown (see Figure 1). Insert the tip of a pen or
pencil into the opening and apply direct pressure to push
down the switch. Make sure the switch is pressed down
completely.
7. Insert the AFAT battery pack or the plastic case containing
batteries into the PTC-860’s battery compartment. Refer to
the “Installing new batteries” section on page 45 for the
correct procedure.
8. Replace the battery door and tighten the two screws.
Note: If the backup battery switch has not been turned on, a
warning message displays when you turn on the PTC.
ᮣ
Charging the battery pack
Charge your PTC-860’s AFAT nickel-cadmium battery pack, if
used, before you use the unit for the first time and whenever
the battery pack becomes weak. The PTC-860’s low-battery
light glows when the battery pack is low.
Note: If you are using alkaline batteries in your PTC-860,
replace them whenever the low-battery light glows.
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