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Home >> Lexus >> 2004 >> RX 330 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 439 (Audio System - Diagnostics) >> Problem Symptoms Table >> Radio Receiver ASSY
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Radio Receiver ASSY

WARNING: This page is about a different car, the 2005 Lexus RX 330. However, it is still accessible from the selected car via links, so may be relevant.
RADIO RECEIVER ASSY PROBLEM SYMPTOMS

Symptom Suspect Area See
Pressing power switch does not start system.
  1. 4. Power source circuit (radio receiver assy)
  2. 5. Radio Receiver assy
 4. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
5. REPLACEMENT
All sound can not heard.
  1. Power source circuit (stereo component amplifier assy)
  2. AMP sound signal circuit
  3. Speaker circuit
  4. AVC-LAN circuit
  5. AMP mute signal circuit (from radio receiver assy)
  6. AMP mute signal circuit (from navigation ECU)
  7. Stereo component amplifier assy
  8. Radio receiver assy
  1. POWER SOURCE CIRCUIT (STEREO COMPONENT AMPLIFIER ASSY) 
  2. AMP SOUND SIGNAL CIRCUIT (RADIO RECEIVER ASSY - AMP) 
  3. SPEAKER CIRCUIT (DRIVER SIDE SPEAKER) 
  4. AVC-LAN CIRCUIT (RADIO RECEIVER ASSY - STEREO COMPONENT AMPLIFIER ASSY) 
  5. AMP MUTE SIGNAL CIRCUIT (FROM RADIO RECEIVER ASSY) 
  6. AMP MUTE SIGNAL CIRCUIT (FROM NAVIGATION ECU) 
  7. REPLACEMENT
  8. REPLACEMENT
Sound quality is bad in all modes, (volume is too low)
  1. Power source circuit (radio receiver assy)
  2. Power source circuit (stereo component amplifier assy)
  3. Speaker circuit
  4. AMP sound signal circuit
  5. Sound quality is bad in all modes (volume is too low)
  1. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
  2. POWER SOURCE CIRCUIT (STEREO COMPONENT AMPLIFIER ASSY) 
  3. SPEAKER CIRCUIT (DRIVER SIDE SPEAKER) 
  4. AMP SOUND SIGNAL CIRCUIT (RADIO RECEIVER ASSY - AMP) 
  5. SOUND QUALITY IS BAD IN ALL MODES (VOLUME IS TOO LOW) 
ASL does not function.
  1. Speed signal circuit
  2. Stereo component amplifier assy
  1. SPEED SIGNAL CIRCUIT (STEREO COMPONENT AMPLIFIER ASSY) 
  2. REPLACEMENT
Sound quality is bad. (DVD sound)
  1. Power source circuit (radio receiver assy)
  2. Power source circuit (multi-display controller sub-assy)
  3. RSE sound signal circuit
  4. Multi-display controller sub-assy
  5. Radio receiver assy
  1. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
  2. POWER SOURCE CIRCUIT (MULTI-DISPLAY CONTROLLER SUB-ASSY) 
  3. RSE SOUND SIGNAL CIRCUIT (MULTI-DISPLAY CONTROLLER SUB-ASSY - RADIO RECEIVER ASSY) 
  4. REPLACEMENT
  5. REPLACEMENT
Noise occurs. - NOISE OCCURS 
Radio broadcast cannot be received, (bad reception) - RADIO BROADCAST CANNOT BE RECEIVED (BAD RECEPTION) 
CD cannot be inserted or is ejected right after insertion.
  1. Power source circuit (radio receiver assy)
  2. CD cannot be inserted or is ejected right after insertion
  1. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
  2. CD CANNOT BE INSERTED OR IS EJECTED RIGHT AFTER INSERTION 
CD cannot be ejected.
  1. Power source circuit (radio receiver assy)
  2. CD cannot be ejected
  1. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
  2. CD CANNOT BE EJECTED 
Sound quality is bad only when playing CD. (volume is too low) - SOUND QUALITY IS BAD ONLY WHEN CD IS PLAYED (VOLUME IS TOO LOW) 
CD sound skips. - CD SOUND SKIPS 
Cassette tape cannot be inserted or played.
  1. Power source circuit (radio receiver assy)
  2. Cassette tape cannot be inserted or played
  1. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
  2. CASSETTE TAPE CANNOT BE INSERTED OR PLAYED 
Cassette tape cannot be ejected.
  1. Power source circuit (radio receiver assy)
  2. Cassette tape cannot be ejected
  1. POWER SOURCE CIRCUIT (RADIO RECEIVER ASSY) 
  2. CASSETTE TAPE CANNOT BE EJECTED 
Sound quality is bad only when playing tape. - SOUND QUALITY IS BAD ONLY WHEN PLAYING TAPE 
Tape is tangled due to incorrect tape speed or auto-reverse malfunction. - TAPE IS TANGLED DUE TO INCORRECT TAPE SPEED OR AUTO-REVERSE MALFUNCTION 
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