BMW 7 Series: Electrostatic Discharge (ESD)

It is essential to follow ESD (Electrostatic Discharge) guidelines when replacing individual components in order to avoid damage to internal components of the CIC. These requirements also apply when storing or sending back components.

Special packaging (ESD bags, ESD boxes with film or foam material cladding) is available for this purpose and should be used instead of conventional packaging materials.

The following picture illustrates the effects of electrostatic discharge (ESD) on electronic components.

Fig. 88: Effects Of ESD (Electrostatic Discharge) On Electronic Components

INDEX REFERENCE CHART

1. ESD symbol (protection measures necessary)
2. ESD damage to a conductor (magnified 5000 times)

Working on Electronic Components

The following requirements must be observed when working on electronic components on the Car Information Computer.

• The work must be performed on a conductive and grounded workbench (special tool 12 7 192 is used for this purpose).
• The grounding cable must be connected to a secure grounding point (water pipe, heating pipe, electric socket ground).
• The person carrying out the work must first put on the grounding cuff in order to ground himself before removing the components from the packaging.
• The electronic components are placed on the anti-static mat which is also connected to a grounding cable.

Fig. 89: Identifying Anti-static Mat Special Tool (12 7 192)

INDEX REFERENCE CHART

1. Anti-static mat
2. Grounding cable for the mat
3. Anti-static cuff
4. Grounding cable for the component

CIC Components

The components listed above are defined as separate or modular. These components are attached to the main/complete head unit.

Of these components, only the faceplate remains a serviceable and replaceable component. Failure of any other internal component will necessitate the replacement of the entire CIC unit once proper authorization has been obtained through PuMA.

The functions of the individual components are briefly described in the following pages.

The installation and removal instructions for the individual components and the complete CIC control unit are available in TIS (Technical Information System) or the workshop system ISTA.

Fig. 90: Identifying CIC Components

INDEX REFERENCE CHART

1. DVD/CD player including CIC housing cover
2. Car Information Computer
3. Hard Drive Disk

Optical Drive (CD/DVD Player)

The Car Information Computer is equipped with a DVD-ROM player.

The optical drive is used for playing audio and video media.

This drive makes it possible to play the following media file formats:

• Audio CDs (CD Digital Audio)
• Audio CD-ROM with MP3, WMA or AAC files
• DVD Audio (only stereo track if contained on the data medium)
• Audio DVD-ROM with MP3, WMA or AAC files
• Video DVD

Playing video on the (front) CID display is only possible when the vehicle is stationary with the gear selector in the "Park" position. When the vehicle is moving or in gear, only the audio track of the video will be played.

Although the CD/DVD drive is no longer used for the navigation system (as in CCC), it may be used to update navigation map data from a navigation DVD.

Fig. 91: Identifying DVD Player With Front Panel Connection And Ribbon Cable Connection

INDEX REFERENCE CHART

1. DVD player
2. Front panel connection
3. Ribbon cable connection, DVD player to CIC head unit

Hard Disk Drive

With the development CIC, a hard disk for storing applications (programs) and data is used in a head unit of a BMW vehicle for the first time.

A 2.5" hard disk drive with a storage a capacity of 80 GB is installed.

This makes it possible to display complex graphics like 3D models in the perspective view of the navigation system.

This system provides the option of converting, storing and playing music tracks.

The hard disk makes it possible to maintain a music collection with a music track database (Gracenote).

The HDD (hard disk drive) also provides a data storage option for the three languages of the voice recognition system.

The hard disk drive is a replaceable component of the CIC. Proper repair instructions and ESD guidelines must be followed when replacing the unit.

The following illustrations show the hard disk location and the individual partitions.

Fig. 92: Identifying CIC And Hard Disk

INDEX REFERENCE CHART

1. Car Information Computer
2. Hard disk (slide-in tray)
3. Pie diagram with individual storage units on the hard disk (partition)

Fixed Components

Some of the components that were modular in the Car Communication Computer are now integrated into the CIC as solid state components.

In the event of defects to some of the components, it may be necessary to replace the entire head unit after submitting a PuMA case.

Fig. 93: Bottom Open View Of CIC Components

INDEX REFERENCE CHART

1. FM/AM double tuner module
2. IBOC decoder
3. Yaw rate sensor
4. Application board
5. FM - RTTI module

Fan

Unlike with CCC, it is not possible to replace the fan of the Car Information Computer separately as part of a service procedure.

The fan provides cooling for the entire hardware assembly, including the hard disk drive and the gateway processor (located directly below it). The exhaust air cools the cooling fins of the HiFi output stage in the power board as it is routed through a cooling channel out of the unit.

Fig. 94: Identifying CIC System's Cooling Fan

READ NEXT: