Shimano FlightDeck SC-7900 Service Instructions Manual page 10

■ Installing the speed sensor
(1) Use a screwdriver to secure the
accessory magnet (x1) to the right side
of the front wheel as shown in the
illustration.
(2) Use two of the accessory cable ties to
provisionally secure the speed sensor to
the front fork as shown in the
illustration.
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(3) Adjust the positions of the speed sensor and magnet so
that the magnet passes directly over the marker of the
speed sensor.
• Distance between speed sensor and magnet: 1 - 5 mm
• Distance between main unit and speed sensor
Vertical: 50 cm or less
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2 3
Horizontal: 10 cm or less
(4) Once the installation positions have been
decided upon, securely tighten the speed
sensor and the magnet.
■ Heart rate sensor unit
(1) Attach the hook of the rubber belt onto the
plastic part (electrode). Attach the belt directly
to your body so that the plastic part is close
against your skin.
(2) The signal will be sent from the casing to the
main unit via a transmitter, so attach the belt
to the middle of your stomach area as shown in
the illustration.
• In order to eliminate measurement errors, it is recommended that
you moisten the electrode with water before attaching the belt.
• Dry skin or thick body hair may affect the reliability of measurement.
• If the weather is cold or your skin is dry, measurement errors may still
occur even if the sensor is fitted directly against your skin.
■ Installing the ST wireless units
<SM-SC79>
(1) For a cable-type dual control lever such as the ST-
7900/6700/6703, open up the bracket cover and
remove the top cover of the lever unit.
(2) Check whether the wireless unit is for the left or right, and then insert
it so that the markings are aligned correctly.
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