Audio unit cannot turn ON
Precautions: Precautions for Audio Visual / Navigation · Precautions for Body, Cab and Accessories · General safety (00)
Before performing the following troubleshooting, check if the symptom is not caused by incorrect handling while referring to Owner’s Manual.
If the cause cannot be identified by the following troubleshooting, replace audio unit with a known-good one. If the symptom is cleared, audio unit is the cause.
| Condition | Possible Cause | Action |
|---|---|---|
|
Audio unit cannot turn ON
|
Faulty audio connector
|
Check audio connectors for connection.
|
|
Faulty audio power supply and ground circuits (including fuse)
|