GEARS
The Systematic approach to dening, diagnosing and solving problems.
Gather Information
• Information reported by the customer
• Information observed by you
G
• Establish the what, where and when of the issue
Evaluate Potential Causes
• Consider possible causes of the problem to develop a hypothesis
E
• Narrow down the focus of the problem
Assess Performance
• Ensure you have all the necessary tools for testing
• T est all potential causes of the failure
A
• Reevaluate and create new hypotheses if necessary
Repair
R
• Return the unit to service by repairing, rebuilding or replacing
Solution Conrmation
• Did the issue go away
• W as the root cause of the issue correctly repaired
S
• Are there any other new symptoms
T roubleshooting: General T roubleshooting
Page 3–2 2000 Series Z MASTER®Service Manual
3460-328 Rev A