Table of Contents "NEW GENERATION" (NG) RADIOS Subject Page Introduction.3 Overview of the Radios for Each Model.3 Functional Overview.4 NG Radios.5 MIR (E52).6 Workshop Hints.8 Review Questions.10 Initial Print Date:10/3/00 Revision Date:9/29/00 "NEW GENERATION" (NG) RADIOS Model: E39, E46, E52, E53 Production Date: Starting from 9/00 Objectives After completing this module you should be able to: Recognize the new features of the "NG” radios. Identify the components that interact with the radio system. Describe the features of the M IR. Review how to access the radio service mode. 2 NG Radios Introduction Starting September 2000, a family of new generation radios will begin to be phased into production. The exception to this is the E52 which has been available with the MIR (multi- information radio) NG radio since series launch in mid 2000. The NG "New Generation" radios will have increased functions: Radio can be operated without KL R. Radios are world frequency. Car memory programming. Audio mixing on vehicles equipped with navigation. The radios external appearance has not changed. NG radios can be identified by their "53" designation. Overview of the Radios for Each Model RADIO TYPE MANUFACTURER MODEL INTRODUCTION DATE C53 Business with cassette Philips E46 3/01 CD53 Business with in¬ dash CD Alpine E46 3/01 C53 Business with M ID control and cassette Phillips E39/E53 9/00 E39 10/00 E53 CD53 Business with M ID control and in-dash CD Alpine E39/E53 9/00 E39 10/00 E53 C53 Business M IR without cassette VDO E52 Start of production B M 53 Business with BM control Becker E46/E39/E53 03/01 E46 02/01 E39 04/01 E53 3 NG Radios KL 30- KL 31- KL R- FROM UNLOADER RELAY DIVERSITY RF Cable ANTENNA/ 1 V 1 M 1 L. 1 M 1 Mix/ F2V RECEIVER "RADON" 1 V 1 1 L_ W LI V LI 1 signal SPEAKER OUTPUT TO AMPLIFIER l-BUS TELEPHONE WITH INTERFACE MUTE SIGNAL MFL BMBT KL 58g LCM III DIGITAL OUTPUT z> CL Z> o o O z> < LLJ LU DC DSP CO Q 2 < SPEAKERS IKE K-BUS GENERAL MODULE NG Radio System Overview Example: E39 with MK III navigation and BMBT 4 NG Radios KEY USED Functional Overview NG Radios Radio Operation with KL R off Operation is possible with the key off on the C53 and CD 53 radios. If the radio is turned on with KL R off, it will play at the last stored volume and settings for 16 minutes until the General Module sends the sleep command. No changes may be made to the radio unless KL R is switched back on. The radio can be turned on and off as many times desired. Diversity Antenna Antenna diversity has been adapted to the new generation of radios. When the radio is in operation, the diversity control unit is activated by the "RAD ON" signal. World Frequency Radio Radios on vehicles sold in the U.S. are world radios. Specific country settings can be made using the service mode. The settings are stored in an EEPROM . Car Memory If programmed, when locking the vehicle using the remote transmitter the: last station Volume setting Last audio mode (Tape, FM, CD etc.) are stored according to the key number used. Unlocking the vehicle with the same transmitter will restore the settings. There is a maximum setting for volume which may be lower than the setting when the radio was last operated. Clock Time can also be displayed when KL R is off by pressing the clock button on the Radio/M ID. Backlighting The LC M/L5Z produces two signals for the control of radio backlighting. Hardwired KL 58g Lights on/off over the K/l Bus. The radio contains a photo-cell for adjustment of backlighting to ambient conditions. 5 NG Radios Reset and Voltage Monitoring A radio reset is triggered by under voltage or the internal processor monitor. The reset function restarts the radio, similar to turning it off and back on again. Operating voltage is measured at the KL 30 input. The radio is switched off if the system voltage exceeds 17V to protect the radio, it will switch on when the voltage falls below 16V. GAL (Speed Dependent Volume) The speed signal from the IKE/KOM Bl is available to the radio overthe K/l Bus. GAL is not a feature on vehicles equipped with DSP. Bus Communication The radio communicates with other modules via the K bus or I Bus dependent on the model. The information shared overthe bus line includes: IKE/KOMBI - Terminal status (KL 15, KL R) LCM/LSZ - Lights on IKE/KOMBI link to TXD Diagnosis MID or BMBT - button or rotary knob status. GM - Key used to lock or unlock vehicle MFL - audio controls status NG radios do not use anti-theft codes. Operation of the radio is only possible if connected to a bus line and the detection of at least one other component. Multi Information Radio (MIR) The M ulti-lnformation Radio (M IR) is used in the E52 Z8 and is the first of the NG series of radios. The M IR contains the radio receiver, display screen, and control panel all in one unit. A cassette player is not included. The M IR is used to control and display the: GPS-Navigation System Audio system including CD Changer Telephone Outside temperature 6 NG Radios Station Search Button Menu Button-recalls main menu for display m AM FmI I — 1 1 Left Knob-radio volume control \ Station Keys-radio/CD Mode Button-switches between radio and CD operation Control Knob-used to control operation of systems in display Every time the M IR is switched on it looks to see if a navigation computer is installed and displays the correct menu options. Text and symbols on the display are generated by the navigation computer and transmitted to the M IR via the "Navigation” Bus. If the M IR does not detect that a navigation computer is connected, the M IR itself will generate it's own dis¬ play signals. The screen display is monochrome only. The navigation elements of the MIR will be discussed in the MK3 module. Audio Mixing Audio mixing allows the vehicle passengers to listen to navigation instructions without muting the radio or CD player. On-Board Computer Functions Outside temperature is the only on-board computer display possible for the Z8. 7 NG Radios Workshop Hints Service Mode for NG Radios A service mode is available as on previous radios as a diagnosis tool and forchanging radio settings. Entering the service mode varies by the device used to control the radio. To enter the service mode: C53/CD53 with and without MID: Turn on the radio. Within 8 seconds, press and hold the "m" button for 8 seconds. Scroll through functions using the "+" and keys or the station < > search buttons. Turn off the radio to end the service mode. C53 MIR: Turn on the radio. Within 8 seconds, press and hold the "SEL" button for at least 8 seconds. Scroll through functions using the station < > search buttons. Turn off the radio to end the service mode. BM53 with board monitor: Turn on the radio. Press and hold the "RDS” button for at least 8 seconds. Scroll through the functions using the station < > search buttons. Turn off the radio to end the service mode. BM53 with Widescreen board monitor: Turn on the radio. Within 8 seconds, press the "INFO” button. From the info screen select RDS Press and hold the B M control knob for at least 8 seconds. Scroll through functions using the station < > search buttons. Turn off the radio to end the service mode 8 NG Radios Service Mode Functions 1. Serial Number: Display of the radio serial number. 2. Software version: Display of the radio software version. Displayed as (calender week, year, version) 3. GAL: Speed-sensitive volume control. Can be adjusted from level 1-6 using the 6 pre¬ set audio buttons. Vehicles equipped with DSP do not use this feature. 4. Field strength and Quality (F/Q): The station currently displayed can be assessed for field strength and quality. An "F" (i.e. F15) number is used to indicate the strength of the signal being received by the radio. This is a good test of the antenna system, station sig¬ nal, and the radio itself. A "Q" (i.e. Q-00) number is used to determine the quality of the radio station including both the audio and RDS signal if applicable. 5. DSP: This function provides information about whether the vehicle is fitted with DSP. The value is displayed as a one (fitted) or zero (not fitted) and is communicated by the DSP amplifier via the l/K bus. 6. TP Volume: Provides adjustment for traffic report minimum volume. Not used in the US. 7. AF: Alternative Frequency tracking setting. Not used in the US. 8. Area: Used to select the appropriate market setting (USA, Canada, Europe, J apan and Oceania). Adjust using the pre-set buttons. 9.lndex: Display of the revision index. 9 NG Radios Review Questions 1. How can the "NG" radio be distinguished from an earlier radio 7 . 2. Which was the first "NG" radio to be used in a production vehicle 7 3. Discuss the most significant features that "NG" radios will offer. 4. How might the audio system react if the vehicle alternator is producing over 17 Volts 7 10 NG Radios