5
PREPARATION
CONNECTING POWER
You can power the CTR-109 from any
of three power sources:
• Internal batteries
• Standard AC power (with the sup-
plied power cord)
• Your vehicle’s cigarette-lighter
socket (with an optional DC
adapter)
Note: Connecting the power cord or a
DC adapter disconnects the internal
batteries.
Using Internal Batteries
You can power the CTR-109 from four
C batteries (not supplied). For the best
performance, we recommend alkaline
batteries, such as RadioShack Cat.
No. 23-551/651.
1. Press down on the battery com-
partment cover and slide it off in
the direction of the arrow on the
cover.
2. Install the batteries as indicated
by the polarity symbols (+ and –)
marked inside the compartment.
Cautions:
• Use only fresh batteries of the
required size and recom-
mended type.
• Do not mix old and new batter-
ies, different types of batteries
(standard, alkaline, or re-
chargeable), or rechargeable
batteries of different capacities.
3. Replace the cover.
When the record indicator becomes
dim, replace the batteries.
Cautions:
• Always dispose of old batteries
promptly and properly.
• Never leave dead, old, or weak
batteries in the CTR-109. They
can leak chemicals and corrode or
damage electronic circuits.
• If you do not plan to use the CTR-
109 for a week or more, or if you
plan to use an adapter only,
remove the batteries to protect the
CTR-109 from possible battery
leakage.
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