Here are some interesting facts I just found out on the E38 Navigation System unit:
Location:
Left side of trunk, left to the CD Changer. Below the Navigation CD Reader.
Deinstallation:
To get access to it, first remove the Navigation CD Reader by plugging in the Philps "hooks" into the holes of the reader. If you don't have this specific tools, you can also insert some nails. They will bend the clamps of the unit so that you can draw it out. Remove the cables. The coax cable also is only plugged, no wrench needed. After that, unclip the plastic frome of the Navi CD reader. Then remove left trunk cover. Unplug the naviagtion unit (again, all coax connectors are only plugged. Remove them with gentle force).
Interfaces:
2 small coax cables - the TV diversity antennas
1 big coax calble - the CAN bus
1 blue connector - power supply and control wires
1 white connector - In total 4 black cables: the audio/video in/out
For all of you who are looking for the famous AV option, here are the connectors located! If you don't have these AV connectors then -in case you want to run an extra DVD player or Video- you surely have to access this white connector. Here is the pinning of the blue (X18804) & white (X18806) connector at the Video module. The first two tables should be valid for the older versions, the other one for the newer cars.
In my car cables are attched to the white connector of the Video module. The lead to the AV in/out jacks in the back of the passenger compartment (under the ventilation unit for the rear passengers).
Components inside:
Oops, lot of ICs. What I was able to see after opening it and removing the metal protection shields inside (a few devices could not be identified as they were coated with some kind of passivation paint):
| Name | Manufacturer | Description | assumed function |
|---|---|---|---|
| SCC68070 | Philips | 16/32 bit CMOS MPU |
Main processor |
| SCC68470 | Philips | I/O module | Interface to all other modules |
| 4 x N28F020 | ?? | 2 Mbit Flash Eprom |
Software program memory |
| HYF514... | Siemens | RAM | Processor Memory |
| COM20020 | SMC | CAN bus controller / Arcnet |
CAN bus interconnection |
| TDA8451 | Philips | P2CC Delay Line and Matrix |
TV PAL decoder |
| TDA8452 | Philips | ?? | |
| TDA8466 | Philips | ??? | |
| TDA8490 | Philips | SECAM decoder | SECAM TV reception |
| SAA9042 | Philips | Teletext | Videotext (TV Text, Teletext) |
| SAA 5191 | Philips | Teletext Video Processor |
Videotext (TV Text, Teletext) |
| MB81C514256 | ?? | 1 Mbit RAM | Videotext Page Memory |
| PCF8200 | Philips | Voice Synthesizer (get datasheet from Scott) |
Providing the Speech |
| CAT 28C64BN | CSI | 64 kbit EEPROM | Settings like TV Channels, ... |
| HM27C1024 | ?? | 1 MBit Eprom | Speech memory or Boot ROM |
Pictures:
MPU board
Navi unit with removed MPU board and removed protection shields
When I browsed the Internet for all of these components, I was frequently led to some UNIX/LINUX pages. So it seems to me that the rumors are right when they say the Navi Unit is a downgraded UNIX microprocessor. Now the challenge will be to make an own boot CD for this system ...
Source: www.750i.de
#1
Андрей! Подскажи, у меня нави есть но в меню его нет(меню моника). Что делать чтоб был? Нави мк2?
#2
сгорел нави блок...
#3
а если взять другой поставить?ничего не будет(для проверки)
#4
ничего не будет
#5
Ещё вопрос)))Если подкинуть другой борт.комп. должен сам его найти?
#6
Да, и в меню должен появится пункт НАВИ
#7
спасибо за помощь
#8
Всем привет, а кто знает где в Астане можно штатный GPS привести в чувства (загрузить карты и прочее)