D9412GV2/D7412GV2 | Troubleshooting Guide | 2.0 Troubleshooting Test Procedures
6 Bosch Security Systems, Inc. | 11/05 | F01U011024B
2.0 Troubleshooting Test Procedures
Troubleshooting Test Procedures (TTPs) are analytical procedures you follow to identify the cause of a complex
symptom. TTPs are used whenever a symptom can have more than one cause.
When following a TTP:
• Initial Actions are tests that you can perform without the use of tools or test equipment. If the TTP begins
with Initial Actions, perform these actions before beginning the procedure.
• Perform the tests and answer the questions in the order they are presented.
• Do not skip steps.
• If you answer “Yes” to a question, follow the
line.
• If you answer “No” to a question, follow the
.
Following a TTP helps you quickly identify the cause of the symptom, and make the necessary repair.
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