Diagnostic Strategies

How to Proceed With Trouble Diagnosis
1. Confirm the symptoms and customer complaint.
2. Understand operation description and function description. Refer to "System Description".
3. Perform the preliminary check. Refer to WW-39, "Preliminary Inspection". Initial Inspection (Preliminary Inspection)
4. Check symptom and repair or replace the cause of malfunction.
5. Does the warning chime operate normally? If YES: GO TO 6. If NO: GO O 4.
6. INSPECTION END