Garmin GPS 155 Repair Manual
Also see for GPS 155: Pilot's guide addendum
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Contents
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Figure 6Main Board Testpoints (Bottom View)2.4 TROUBLESHOOTING CHARTPROBLEM RECOMMENDED ACTIONUnit will not power onCheck External Power ConnectionCheck External Battery Pack(see Section 3.2 & 4.3.2)Replace Pwr/Dimmer Switch (see Section 3.2.7)Replace Main Board (see Section 3.2.4)Unit will not power off Replace Main Board (see Section 3.2.4)Replace Control/Display Unit(see Section 3.2.1)Replace Pwr/Dimmer Switch (see Section 3.2.7)Display has horizontal or vertical lines Replace Display Board (see Section 3.2.9)Replace Main Board (see Section 3.2.4)Replace Control/Display Unit(see Section 3.2.1)Display has missing or dark pixels Replace Display Board (see Section 3.2.9)Replace Control/Display Unit(see Section 3.2.1)9 |
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