91
15 MAINTENANCE
■ Optional unit installation
q Remove [DIAL] and unscrew the 2 allen-socket bolts from
the front panel using with an allen wrench (2.5 mm;
1
⁄10″)
w Detach the front panel from the main unit.
e Attach the insulation sheet (supplied as accessory) to IC
on the Front unit.
r Remove the protective paper attached to the bottom of the
optional unit to expose the adhesive strip.
t Install the unit as illustrated below. Insert tightly to avoid
bad contact.
y Return the front panel and the allen-socket bolts to their
original position.
NOTE: When attaching the front panel to the main unit,
make sure the flat cable are running in the groove to
prevent catching between front panel and main unit.
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