Garmin GNC 250 Maintenance And Repair Manual

Hide thumbs Also See for GNC 250:

Pilot's manual (112 pages)

Pilot’s quick reference manual (25 pages)

Installation manual (44 pages)

Table Of Contents

Table of Contents

Quick Links

Download this manual

GARMIN CORPORATION

1200 E. 151ST STREET

OLATHE, KS 66062-3426

GNC 250/300

MAINTENANCE AND REPAIR

ACTV

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ f @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ g @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ g @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ = C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ ? B @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ ? C @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ g @ @ @ @ @ @ h e @ @ @ @ h e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ < B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ g @ @ @ @ @ @ h e @ @ @ @ h e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ h e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ = ? @ @ @ @ @ @ g @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ h e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ h @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ h @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ = ? g @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f ? C @ @ @ @ @ @ g ? C @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ ? B @ @ @ @ @ @ e @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ e @ @ @ @ @ @ < ? @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ ? C @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ = ? @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ < ? g @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ g ? B @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ h @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? g @ @ @ @ h @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ ? C @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ = ? @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ = ? @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ = ? @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ ? C @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ g ? B @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? ? B @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? g @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ < ? @ @ @ @ @ @ g @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ h @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ h e @ @ @ @ h e @ @ @ @ g @ @ @ @ @ @ @ @ h e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ h e @ @ @ @ g @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ h e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ h e @ @ @ @ h e @ @ @ @ g @ @ @ @ @ @ @ @ h e @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ h e @ @ @ @ g @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ h e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ e @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ f @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ h @ @ @ @ @ @ @ @ @ @ g @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e ? C @ @ @ @ e @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ = C @ @ @ @ @ @ @ @ = C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ = ? e @ @ @ @ ? C @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ g ? C @ @ @ @ @ @ @ @ @ @ g @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ < ? @ @ e @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ < ? g @ @ @ @ @ @ @ @ ? B @ @ < ? @ @ @ @ ? B @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ e @ @ @ @ e @ @ ? B @ @ e @ @ @ @ @ @ < ? g @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ ? C @ @ e @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ @ @ h @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ e @ @ @ @ e @ @ = ? @ @ e @ @ @ @ @ @ h @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ < ? e @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ e @ @ @ @ e ? B @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ g @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ f @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ e @ @ @ @ f @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ g @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ ? C @ @ = ? @ @ @ @ ? C @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ = C @ @ = ? @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ e ? B @ @ @ @ @ @ @ @ e @ @ @ @ < B @ @ @ @ @ @ @ @ < B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < B @ @ < B @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ e ? B @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h e @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h e @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ g @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ g @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ e @ @ f @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ f @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ f ? C @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ g @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? g @ @ @ @ e @ @ = ? ? C @ @ @ @ @ @ @ @ = ? f @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ e @ @ @ @ = ? e @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? e ? C @ @ @ @ @ @ e @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ e ? B @ @ @ @ < ? @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ e @ @ ? B @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ < ? @ @ @ @ e @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ f @ @ @ @ e @ @ @ @ ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ e @ @ = ? @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? f @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ e ? B @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? g @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ f ? C @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ f @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ f @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ @ @ ? B @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ e @ @ @ @ e @ @ < ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ e @ @ @ @ ? C @ @ @ @ = ? e @ @ @ @ @ @ ? C @ @ @ @ = ? @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ = ? @ @ @ @ @ @ f @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? C @ @ @ @ @ @ = ? @ @ @ @ e @ @ ? C @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? g @ @ @ @ @ @ < ? ? B @ @ e @ @ @ @ @ @ @ @ < ? ? B @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? g @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ g ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h e @ @ @ @ h e @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ < ? e ? B @ @ @ @ @ @ e @ @ @ @ < ? @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @

@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ @ @ f @ @ e @ @ @ @ @ @ @ @ f @ @ @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ e @ @ @ @ @ @ @ @ @ @ @ @ h @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ h e @ @ @ @ h e @ @ @ @ @ @ g @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ g @ @ @ @ @ @ e @ @ @ @ e @ @ @ @ @ @ @ @ @ @ e @ @ @ @ @

NRST

MANUAL

STBY

RTE

WPT

NAV

GNC 250

CLR ENT

CRSR

MSG

PART NUMBER 190-00067-55

REVISION E, MARCH 26, 1998

Table of Contents

Troubleshooting

Summary of Contents for Garmin GNC 250

Page 1 ® GNC 250/300 MAINTENANCE AND REPAIR MANUAL ACTV STBY GNC 250 CLR ENT @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @...
Page 2: Table Of Contents
TABLE OF CONTENTS SECTION 1 INTRODUCTION Paragraph Page 1.1 GENERAL DESCRIPTION......................1 1.2 DETAILED DESCRIPTION....................2 1.2.1 Control/Display Unit (CDU)..................4 1.2.2 CPU Board Assembly ....................6 1.2.2.1 Central Processing Unit (CPU) ..............6 1.2.2.2 Power Supply Circuits...................6 1.2.3 GPS Receiver........................6 1.2.4 Interface Board and Data Cards..................7 1.2.5 VHF Communications Transceiver ................7 SECTION 2 TROUBLESHOOTING...
Page 3 TRANSMITTER TEST SETUP................39 FIGURE 10 J2 REAR CONNECTOR PINOUT DEFINITION..........43 FIGURE 11 J1 REAR CONNECTOR PINOUT DEFINITION..........44 FIGURE 12 GNC 250/300 ASSEMBLY DRAWING (VIEW 1)..........47 FIGURE 13 GNC 250/300 ASSEMBLY DRAWING (VIEW 2)..........48 FIGURE 14 GNC 250/300 ASSEMBLY DRAWING (VIEW 3)..........49 FIGURE 15 GNC 250/300 ASSEMBLY DRAWING (VIEW 4)..........50...
Page 4: General Description
GARMIN board exchange program, if necessary. A remote mounted battery pack with built-in charger is available for the GNC 250/300 as well as a 28v to 14v converter assembly. The following modules and printed circuit board assemblies are...
Page 5: Detailed Description
Contains circuitry for converting 28V power bus to 14V in 28V aircraft. DETAILED DESCRIPTION Internally, the GNC 250/300 is divided into seven printed circuit boards; the CPU, GPS Receiver, Comm Receiver, Comm Transmitter, Interface, Display, and Keypad Circuit boards. The block diagram in Figure 1 shows the relationships between major circuits and modules within the GNC 250/300.
Page 6 Figure 1. GNC 250/300 Block Diagram...
Page 7: Control/Display Unit (Cdu)
1.2.1 Control/Display Unit (CDU) The Control/Display Unit is an assembly consisting of eleven keycaps, keypad board, optical lens, vacuum fluorescent display (VFD) and board with drivers, photocell and screws, housed in a die cast bezel with a dual concentric rotary switch and two knobs. The VFD is a 4 row by 20 column unit with variable intensity.
Page 8 The block diagram in Figure 3 below shows the interaction between the various CPU board circuits. Figure 3. CPU Board Block Diagram...
Page 9: Cpu Board Assembly
1.2.2 CPU Board Assembly The CPU Board Assembly contains the CPU, operating system ROM, system memory, discrete I/O, serial communication drivers/receivers and the power supply. These items are discussed in further detail below. 1.2.2.1 Central Processing Unit (CPU) The CPU board is a microprocessor-based computer board. This board contains an Intel 80L186EB microprocessor running at 16 MHz, a reprogrammable memory chip and random access memory chips (RAM).
Page 10: Interface Board And Data Cards
NavData® cards allow for data transfer to the CPU board only. User data cards, with 128 kilobytes of flash memory data storage, may be used to save user data/settings from the GNC 250/300 or restore that information to the GNC 250/300. Address and data lines from the CPU board route through the Interface Board’s output buffers to the data card.
Page 11 Figure 5. Communication Transceiver Block Diagram The VHF transmitter is a 3 stage RF power amplifier capable of delivering 5 watts minimum of CW power to the antenna connector. The input to the transmitter is supplied by the receiver synthesizer and is amplified from a level of 100 mW to the final output of 5 watts. The receiver board AM modulates the transmitter using microphone input via the J2 connector to collector modulate the final two stages of the transmitter through power transistor Q34.
Page 12: Troubleshooting
· Adjust Power Supply to 14 Volts SELF-TEST FAILURES The GNC 250/300 monitors many of its internal functions and displays a message to alert the user should a failure occur. The table below shows the recommended repair for each self-test failure message.
Page 13 MESSAGE (cont.) RECOMMENDED REPAIR* (cont.) IF battery/Charger pack not installed change Battery low (optional Configuration to: Remote Battery : None battery) If battery is installed verify that the charge is set up for "auto" and allow to charge for 1 hr. Verify Connections to remote battery/Charger pack.
Page 14: Initial Troubleshooting Operations
INITIAL TROUBLESHOOTING OPERATIONS The first step in troubleshooting the GNC 250/300 is to remove the top and bottom covers (see Section 3.1) and the CPU bottom shield, and swing the comm assembly open. Verify that the unit is being properly powered and the internal clock is functional.
Page 15 Figure 6. CPU Board Testpoints (Top View)
Page 16 Figure 7. CPU Board Testpoints (Bottom View)
Page 17: Troubleshooting Chart
TROUBLESHOOTING CHART MESSAGE RECOMMENDED REPAIR Unit will not power on Check External Power Connection Check Remote External Battery Pack (if equipped) Check Pwr/Volume Switch Connection Replace Pwr/Volume Switch (see Section 3.2.7) Replace CPU Board (see Section 3.2.4) Unit will not power off Replace CPU Board (see Section 3.2.4) Replace Pwr/Volume Switch (see Section 3.2.6) Display has horizontal...
Page 18 20-30 minutes. CAUTION: All user waypoints/settings will be lost if the unit is reset. The GNC 250/300 will eventually perform an AutoLocate™ and lock onto satellites, however this can add an additional 10 minutes to the normal lock-on time.
Page 19: Troubleshooting Comm Section
TROUBLESHOOTING CHART (COMM SECTION) MESSAGE RECOMMENDED REPAIR Receiver has poor signal Check comm antenna in installation for intermittent reception (low connection and/or high VSWR. sensitivity) Verify connection between power/volume control knob and CPU Board. Verify connection between CPU Board and Comm Receiver Board.
Page 20 MESSAGE (cont.) RECOMMENDED REPAIR (cont.) Transmitter demodulated Check output from 28v to 14v converter if so audio is distorted or equipped. Replace converter if output voltage is noisy higher than 15VDC Check comm antenna in installation for intermittent connection and/or high VSWR. Verify connections from CPU Board to modulator transistor Q34 and from Q34 to transmitter.

This manual is also suitable for:

Gnc 300

Garmin GNC 250 Maintenance And Repair Manual

Quick Links

Troubleshooting

Related Manuals for Garmin GNC 250

Summary of Contents for Garmin GNC 250

This manual is also suitable for:

Table of Contents