Pioneer AVIC-X940BT Service Manual page 127

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II. External Input via RCA Terminals [Video, Audio]
When error happens, the following error message is displayed;
Case 1. Failed to Setup VTR-ON.
Input ON setting for microcomputer was unsuccessful.
Case 2. Failed to Change Source of VTR.
Source switchover for microcomputer was unsuccessful.
Case 3. Failed to Setup VTR-OFF.
Input OFF setting for microcomputer was unsuccessful.
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