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Battery Check: Rotate the Volume ON/OFF Control knob clockwise to turn the
unit on. Note that the battery LED (Labeled bat/ ovmod) should flash one time on
good batteries. Poor batteries will cause the LED to be illuminated continuously
and a bad or unusable battery will not cause any illumination at all.
Figure 8
Low Battery Indicator LED
Battery Removal: To remove the battery holder from the case to change batteries,
follow the instructions as before for removing the cover. Pull the pull bale on the
holder. The holder should come out.
NOTE: For maximum uninterrupted service it is suggested that new 1.5 volt alka-
line AA batteries (Mallory MN1500 or equivalent) be installed prior to each use.
Avoid “shelf worn” or “economical” batteries. Operation from heavy duty
nickel-cadmium batteries is also permissible, at the expense of operating time.
(NEDA 10015 or equivalent). Typical life of fresh alkaline batteries with the
TR-200 is approximately 24 hours maximum. 8-10 hours is typical of fully charged
nickel-cadmium batteries.
NOTE: Nickel-cadmium batteries can be charged right in the holder using the Telex
BC-4 Battery Charger (P/N 70741000). Refer to Battery Information Section.
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