Chapter 6 of 77% of exam

System Troubleshooting, Repairs, or Replacements

Define the symptom, read the records, isolate, test, repair like for like, retest and record. CSLB weights this section at 7%. For worked examples, named traps and a full practice exam at CSLB's weights, see the PrepPass C-7 Low Voltage Systems study guide.

Safe, methodical repair

Treat circuits as energized until tested; replace damaged horizontal cable.

Assume energized
Equipment is treated as energized until tested.
Cal. Code Regs. tit. 8 §2320.3
No splices
Horizontal cable is not spliced; replace the run.
UFGS 27 10 00 (2025), para. 3.4.2
Records
Retag cables and terminals after transfers.
UFC 3-580-01 (2024), para. 3-9.3
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