Timex M640 User Manual
Page 91
This product uses a CR2032 lithium battery for the Digital Heart Rate
Monitor. To change the battery:
1. Open the Sensor battery lid with a coin, turning the coin
counterclockwise.
2. Replace the battery with a new CR2032, 3V lithium battery with (+)
facing you, taking care not to touch the two contacts and discharge
the battery.
3. When you have finished inserting the battery, press the reset button
(located in the lower left corner) with a toothpick or straightened paper
clip and close the lid with a coin -- screwing in a clockwise direction.
To test the new battery after you have inserted it:
1. Move away from any possible sources of electrical or radio
interference.
2. Wet the Digital Heart Rate Sensor pads and securely fasten the chest
strap below your sternum.
3. While wearing the Watch, press the HEART RATE button. A set of three
dashes (- - -) and the flashing heart rate icon will appear on the display.
33
C
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❖ To avoid build up of materials that can interfere with the Digital Heart
Rate Monitor’s ability to receive a valid pulse, rinse the Digital Heart
Rate Sensor with fresh water.
❖ Do not clean the Digital Heart Rate Monitor sensor or chest strap with
abrasive or corrosive materials. Abrasive cleaning agents may scratch
the plastic parts and corrode the electronic circuit.
❖ Do not subject the Digital Heart Rate Monitor to excessive force, shock,
dust, temperature, or humidity. Such treatment may result in
malfunction, a shorter electronic life span, damaged batteries, or
distorted parts.
❖ Do not tamper with the Digital Heart Rate Monitor’s internal
components. Doing so will terminate the Monitor’s warranty and may
cause damage.
❖ The Digital Heart Rate Monitor contains no user-serviceable parts,
except batteries.
B
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Digital Heart Rate Sensor Battery
If your heart rate readings become erratic or stop, you may need to
replace the battery on your Digital Heart Rate Sensor. You can change the
battery yourself without any special tools.
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BATTERIA
APRIRE
BATTERIA