A Symptoms

IMPORTANT: Review the system operation in order to familiarize yourself with the system functions.
^ Refer to Radio/Audio System Operation (UM7 or UM6 Radio)
^ Refer to Radio/Audio System Operation (RPO UM6)
^ Refer to Radio/Audio System Operation (RPO ULO or UNO)
^ Refer to Radio/Audio System Operation (RPO ULO)
^ Refer to Radio/Audio System Operation (RPO UNO)
^ Refer to Radio/Audio System Operation (RPO UK6)
^ Refer to Radio/Audio System Operation (RPO UPO)
^ Refer to Radio/Audio System Operation (RPO UPO-Remote)

Visual/physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Radio/Audio System. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagrams.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Amplifier Inoperative
^ Remote Playback Device Inoperative
^ Radio Memory Inoperative
^ Radio Display Inoperative, No Sound from Speakers
^ Radio Display Does Not Dim with IP Dimmer Switch
^ Tape Player Weak, Slow, or Garbled Output
^ Speakers Inoperative or Distorted - Rear
^ Speakers Inoperative - One or More