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Académie
Garage Door Technician
Garage Door Troubleshooting & Diagnostics (Canada)
Opener Electrical Diagnostics
Vérification des connaissances
Opener Electrical Diagnostics
Vérification des connaissances
Vérification des connaissances
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What symptom is specific to a failed screw drive opener plastic carriage?
A
The door moves slower than normal
B
The opener runs and the screw rod rotates, but the trolley does not travel along the rail
C
The door reverses at the bottom of travel
D
The lights flash continuously
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