Audio / Visual: Other Lexus RX II facelift

PRECAUTION

Note. When disconnecting the negative (-) battery terminal, initialize the following systems after the terminal is reconnected.

SYSTEM INITIALIZATION TABLE

1. OBSERVE HANDLING AND OPERATIONAL PRECAUTIONS Please explain to the customer that when the negative terminal is disconnected from the battery, the channel information memory of the AM / FM broadcast stations in the radio receiver is cleared. If necessary, make a note of the recorded channel information before the negative terminal is disconnected, then reset the information after the negative terminal is reconnected. The removal / installation of the radio receiver should be performed after all the cassette tapes and audio CDs are ejected from the radio receiver. HINT: If the cassette tapes and the audio CDs cannot be ejected due to the malfunction of the radio receiver, do not try to drag them out by force. Bring the vehicle to the repair plant. Fasten the earth bolt securely when the antenna cord is removed or installed. HINT: Failing to fasten the earth bolt securely causes noise at the time of radio wave reception. Do not touch the cone paper of the speaker.

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1. DISC PLAYER OUTLINE A compact disc player or digital versatile disc player uses a laser pickup to read digital signals recorded on compact discs (CDs) or digital versatile discs (DVDs). By converting the digital signals to analog, music and other things can be played. CAUTION: Do not look directly at the laser pickup because the CD/DVD player uses an invisible laser beam. Be sure to operate the player only as instructed. NOTE: Do not disassemble any part of the CD or DVD player. Do not apply oil to the CD or DVD player. Do not insert anything but a CD or a DVD into the CD or DVD player.
2. AVC-LAN DESCRIPTION What is AVC-LAN? AVC-LAN, an abbreviation for "Audio Visual Communication Local Area Network", is a united standard developed by the manufacturers in affiliation with Toyota Motor Corporation. This standard pertains to audio and visual signals as well as switch and communication signals. Purpose: Recently, car audio systems have rapidly developed and the functions have vastly changed. The conventional car audio system is being integrated with multi-media interfaces similar to those in navigation systems. At the same time, customers are demanding higher quality from their audio systems. This is merely an overview of the standardization background. The specific purposes are as follows: To solve sound problems, etc., caused by using components of different manufacturers through signal standardization. To allow each manufacturer to concentrate on developing products they do best. From this, reasonably priced products can be produced. HINT: If a short to +B or short to ground is detected in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning. If an audio system is equipped with a navigation system, the multi-display unit acts as the master unit. If the navigation system is not equipped, the audio head unit acts as the master unit instead. If the radio and navigation assembly is equipped, it is the master unit. The radio receiver provides resistance to make communication possible. The car audio system with an AVC-LAN circuit has a diagnostic function. Each component has a specified number (3-digit) called a physical address. Each function has a number (2-digit) called a logical address.
3. COMMUNICATION SYSTEM OUTLINE Components of the audio system communicate with each other via the AVC-LAN. The master component of the AVC-LAN is a radio receiver with a 60 to 80 ohms resistor. This is essential for communication. If a short circuit or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning.
4. DIAGNOSTIC FUNCTION OUTLINE The audio system has a diagnostic function (the result is indicated on the master unit). A 3-digit hexadecimal component code (physical address) is allocated to each component on the AVC-LAN. Using this code, the component in the diagnostic function can be displayed.

Pressing Power Switch does not Turn on System

1. CHECK VEHICLE CONDITION Check that conditions in the cabin are not likely to cause condensation. HINT: This problem occurs when the cabin is humid and the temperature changes rapidly. This may produce condensation, resulting in a short circuit. OK: Condensation is not likely to be produced. NG: DRY OUT CABIN AND RECHECK CONDITION OK: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL

No Sound can be Heard from Speakers

1. CHECK RADIO RECEIVER Check radio receiver setting. Check that the volume is not set to "0". Check that "MUTE" is off. OK: The volume is not set to "0" and "MUTE" is off. OK: END NG: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL

Sound Quality is Bad Only when CD is Played (Volume is Too Low)

1. REPLACE CD WITH ANOTHER AND RECHECK Replace the CD with another one and recheck. Check if the problem recurs using another CD. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: CD FAULTY

Cassette Tape cannot be Ejected

1. PRESS "EJECT" AND CHECK OPERATION Press the cassette tape EJECT switch of the radio receiver for 2 seconds or more and check that the cassette tape is ejected. OK: Cassette tape is ejected. NG: REPLACE RADIO RECEIVER OK: Go to next step
2. CHECK CASSETTE TAPE Check that the ejected cassette tape does not have a peeling label, cassette body deformation or other problems. OK: No problems with cassette tape. NG: CASSETTE TAPE IS FAULTY OK: Go to next step
3. REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK Replace the cassette tape with a normal one and check that the malfunction disappears. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: CASSETTE TAPE IS FAULTY

Cassette Tape cannot be Inserted or Played

1. CHECK FOR ANY FOREIGN OBJECT Check that the cassette tape player is free of foreign objects. OK: No foreign objects. NG: REMOVE FOREIGN OBJECT OK: Go to next step.
2. CHECK CASSETTE TAPE Check that the cassette tape is a normal tape for recording sounds. OK: Cassette tape is normal. NG: CASSETTE TAPE IS FAULTY OK: Go to next step.
3. CHECK RADIO RECEIVER Replace the cassette tape with a normal one and check that the malfunction disappears. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: CASSETTE TAPE IS FAULTY

CD cannot be Ejected

1. PRESS "EJECT" AND CHECK OPERATION Press the CD EJECT switch of the radio receiver for 2 seconds or more and check that the CD is ejected. OK: CD is ejected. NG: REPLACE RADIO RECEIVER OK: Go to next step.
2. REPLACE CD WITH ANOTHER AND RECHECK Insert another CD and check if it is ejected. OK: CD is ejected. NG: REPLACE RADIO RECEIVER OK: CD IS FAULTY

CD cannot be Inserted / Played or CD is Ejected Right After Insertion

1. CHECK IF A PROPER CD IS INSERTED Make sure that the CD is a normal audio CD, and that it is not deformed, flawed, stained, burred or has any other defects. OK: Normal audio CD. HINT: Translucent or uniquely-shaped CDs cannot be played. CDs for personal computers (with music recorded in) and CD-Rs cannot be played. NG: CD IS FAULTY OK: Go to next step.
2. CHECK THAT CD IS INSERTED PROPERLY Check whether or not the CD is inserted upside down. OK: CD is properly inserted. NG: SET CD PROPERLY OK: Go to next step.
3. CHECK CD Clean the disc by wiping it with a soft cloth from inside to outside in a radial direction. OK: Malfunction disappears. NOTE: Do not use a conventional record cleaner or antistatic preservative. NG: Go to step 4 OK: CD WAS DIRTY
4. REPLACE CD WITH ANOTHER AND RECHECK Replace the CD with a normal one and check that the malfunction disappears. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: CD IS FAULTY

CD Sound Skips

1. CHECK CD Check the CD. OK: The CD is clean. HINT: If dirt is on the CD surface, wipe it clean with a soft cloth from inside to outside in a radial direction. NOTE: Do not use a conventional record cleaner or antistatic preservative. NG: CLEAN CD OK: Go to next step.
2. CHECK CD Check that the CD is not deformed or cracked. OK: No deformation or cracks on the CD. NG: CD IS FAULTY OK: Go to next step.
3. CHECK OPERATION USING ANOTHER CD Check using another CD. Check if the problem recurs using another CD. OK: The problem does not occur. OK: CD IS FAULTY NG: Go to next step.
4. CHECK RADIO RECEIVER Check the radio receiver installation condition. Check that the radio receiver is properly installed. OK: Radio receiver is properly installed. NG: REINSTALL RADIO RECEIVER PROPERLY OK: REPLACE RADIO RECEIVER

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Scheme 275

1. CHECK RADIO RECEIVER Check the radio's automatic station search function. Check the radio's automatic station search function by activating it. OK: The radio's automatic station search function works properly. OK: REPLACE RADIO RECEIVER NG: Go to next step.
2. CHECK OPTIONAL COMPONENTS Check optional components (sun-shade film, telephone antenna, etc.). Check if any optional components, such as sunshade film or telephone antenna that may decrease reception capacity, are installed. OK: Optional components are installed. NOTE: Do not remove any optional components installed by the customer without his or her consent. OK: REMOVE OPTIONAL COMPONENTS AND CHECK AGAIN (SEE NOTICE ABOVE) NG: Go to next step.
3. CHECK RADIO RECEIVER Preparation for check Remove the antenna plug from the radio receiver. Check for noise Turn the ignition switch to the ACC position with the radio receiver connector connected. Turn the radio on and put into AM mode. Place a screwdriver, thin wire, or other metal object on the radio receiver's antenna jack and check that noise can be heard from the speaker. OK: Noise occurs. NG: REPLACE RADIO RECEIVER OK: Go to next step.
4. CHECK GLASS ANTENNA Check for continuity of the antenna. HINT: Check for continuity at the center of each antenna wire as shown in the illustration. NOTE: When cleaning the glass, wipe it in the direction of the wire with a soft dry cloth. Take care not to damage the wire. Do not use detergents or glass cleaners with abrasive ingredients. When measuring voltage, wrap a piece of tin foil around the tip of the negative probe and press the foil against the wire with your finger, as shown in the illustration. OK: There is continuity in the antenna. NG: REPAIR GLASS ANTENNA OK: Go to next step.
5. CHECK ANTENNA CORD Remove the antenna plug of the radio receiver and antenna. Measure the resistance between the antenna and radio receiver to check for an open circuit in the antenna cord. Standard resistance: Below 1 ohms Measure the resistance between the antenna cord and body ground to check for a short circuit in the antenna cord. Standard resistance: 10 kohms or higher NG: REPLACE ANTENNA CORD OK: Go to next step.
6. REPLACE AMPLIFIER ANTENNA Replace the amplifier antenna and check if radio broadcasts can be received normally. OK: Radio broadcasts can be received. OK: NORMAL OPERATION OK: REPLACE RADIO RECEIVER

Sound Quality is Bad Only when Playing Tape

1. REPLACE CASSETTE TAPE WITH ANOTHER AND RECHECK Replace the cassette tape with another one and recheck. Replace the cassette tape with another normal one to check if the same trouble occurs again. OK: Malfunction disappears. OK: CASSETTE TAPE IS FAULTY NG: Go to next step.
2. CHECK FOR ANY FOREIGN OBJECT Check for foreign objects. Check that there are no foreign objects or defects in the cassette tape player. OK: No foreign objects or defects. NG: REMOVE FOREIGN OBJECT OK: Go to next step.
3. CLEAN HEAD AND CHECK OPERATION Head cleaning Raise the cassette door with your finger. Using a pencil or similar object, push in the guide. Using a cleaning pen or cotton applicator soaked in cleaner, clean the head surface, pinch rollers and capstans. Check if the same trouble occurs again. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: HEAD IS DIRTY

Tape is Tangled due to Incorrect Tape Speed or Auto-Reverse Malfunction

1. CHECK FOR ANY FOREIGN OBJECT Check for any foreign objects. Check that there are no foreign objects or defects in the cassette tape player of the radio receiver. OK: No foreign objects or defects. NG: REMOVE FOREIGN OBJECT OK: Go to next step.
2. REPLACE CASSETTE TAPE WITH ANOTHER (90 MIN. OR LESS) AND RECHECK Check the cassette tape player using a normal cassette tape. Replace the cassette tape with another normal one (90 minutes or less) to see if the same trouble occurs again. OK: Malfunction disappears. OK: CASSETTE TAPE IS FAULTY NG: Go to next step.
3. CLEAN HEAD AND CHECK OPERATION Head cleaning Raise the cassette door with your finger. Using a pencil or similar object, push in the guide. Using a cleaning pen or cotton applicator soaked in cleaner, clean the head surface, pinch rollers and capstans. Check if the same trouble occurs again. OK: Malfunction disappears. NG: REPLACE RADIO RECEIVER OK: HEAD IS DIRTY

Poor Sound Quality in All Modes (Low Volume)

1. CHECK AUDIO SETTINGS Set "BASS", "MID" and "TREB" to the initial values and check that sound is normal. OK: Malfunction disappears. OK: END NG: Go to next step.
2. COMPARE WITH ANOTHER VEHICLE OF SAME MODEL Compare with another vehicle of the same model. Compare with another vehicle of the same model which does not have trouble to see if there is any difference in the sound quality. OK: No difference is found. OK: END NG: RETURN TO THE ORIGINAL INSPECTION FLOW BECAUSE THE CHECK RESULT IS NORMAL

Note. When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected.

SYSTEM INITIALIZATION TABLE

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Scheme 279

1. OUTLINE As a unique feature of Rear Seat Entertainment (RES) system, the front and rear seat occupants can enjoy different audio-visual modes at the same time. Thus, this system offers enhanced entertainment to the rear seat occupants. The rear seat occupants can control the audio-visual modes with the remote controller (switch assembly), and listen to audio by using wired or wireless headphones. The RSE system is controlled by the multi-display controller, and the communication among the audio head unit and, rear display assembly (DVD player) is established via an AVC-LAN (Audio Visual Communication-Local Area Network).
2. FUNCTION OF MAIN COMPONENT MAIN COMPONENT FUNCTION Rear display assembly Control Panel DVD Player Headphone Terminal Displays DVD and video images in accordance with video signals from the multi-display controller. Displays a map screen in accordance with the signals from the navigation ECU. Receives signals from the remote controller and outputs them to the multi-display controller. Outputs operation signals to the rear display to the multi-display controller. Outputs audio signals to the wireless headphones in the form of infrared signals. Outputs audio signals to the wired headphones that are connected. Adjusts the volume of the wired headphones in accordance with volume control. Displays the audio-visual control screen. Displays the adjustment screen. Displays the diagnosis screen. The diagnosis screen appears when the diagnosis mode is started on the audio head unit. Multi-display assembly Displays DVD and video images in accordance with video signals from the multi-display controller. Displays a map screen in accordance with the signals from the navigation ECU. Radio receiver assembly Outputs audio signals to the multi-display controller and the stereo component amplifier. Outputs a request to the multi-display controller to start the diagnosis mode. Multi-display controller (Multi-display controller) Processes video and audio signals from the DVD player and video player and audio signals from the audio head unit, and outputs them to the television display assembly and headphone terminals. Controls the distribution of the audio-visual mode to the front (audio head unit) and the rear (RSE). Remote Controller (Switch assembly) Outputs various control signals of the RSE system to the television display assembly in the form of infrared signals. Wireless Headphone Receives the audio signals from the television display assembly in the form of infrared signals. Volume adjustment of the wireless headphone can be done by using the volume equipped on the wireless headphone. VTR terminal This terminal is for connecting the video player's video and audio output terminals.
3. COMMUNICATION SYSTEM This system has 2 kinds of AVC-LAN, Main AVC-LAN and Sub AVC-LAN. Multi-display controller sub-assembly works as a master unit in the Sub AVC-LAN, but not in the Main AVC-LAN.
4. COMMUNICATION SYSTEM This system performs communication between components through the main AVC-LAN and sub AVC-LAN. The multi-display controller functions as a master unit, which performs communication between the multi-display controller and rear display assembly, in the sub AVC-LAN circuit. HINT: Refer to "NAVIGATION SYSTEM" (See «NAVIGATION SYSTEM»(ref-236036-S24383003572006062900000) ) and «SYSTEM DESCRIPTION»(ref-236035-S03549420012006062900000) for the main AVC- LAN circuit. The multi-display controller is equipped with a resistor (60 to 80 ohms) for communication.
5. DIAGNOSIS FUNCTION The multi-display controller functions as a master unit in the sub AVC-LAN circuit. It identifies trouble in this circuit, and the identified information is displayed on the television display assembly.
6. HOW TO REDUCE NOISE ON THE REAR DISPLAY ASSEMBLY HINT: See «ADJUSTMENT»(ref-236035-S19894762642006062900000)