Skip to content
WorkZen
Academy
Home
All Trades
My Progress
en
English
EN
Français
FR
Español
ES
Menu
Home
All Trades
My Progress
Search certifications...
en
English
EN
Français
FR
Español
ES
Academy
Garage Door Technician
Garage Door Troubleshooting & Diagnostics (Canada)
Drive System Troubleshooting
Knowledge Check
Drive System Troubleshooting
Knowledge Check
Knowledge Check
1 / 14
During trolley diagnosis, what confirms successful re-engagement after pulling the emergency release?
A
The trolley slides freely along the entire rail
B
An audible click when the opener runs and the trolley catches
C
The door moves upward under spring tension alone
D
The release handle returns to its original position
Check Answer
Back to lessons
Next module: Remote Control & Wireless Issues
Next module: