Subject: DSP amp problem- Car was retrofited with NAV couple mos ago but Author: bmw635 : 15126 posts Posted on: 2007-12-02 06:37:51

I did not recode the DSP Loewe amp to NAV yet. Audio works after I switch source after it shut off.

Making TV module harness and testing TV today- everything works but DSP amp still shut off as expected until I switch to another audio source ( as I expected until recode), but weird things begin after I disconnect the Loewe DSP amp, TV mod, PI CDC to rerun the wirings cleaner.

After the battery was drained, I hookup slow charger and TV module shows German instruction instead of English. DSP still show on the screen but no more sound (regardless of what I do).

I thought about doing cold reset/ disconnect battery for 15min then reconnect. This time TV instruction is back in English but the DSP is not showing on the screen anymore nor there's any sound.

QUESTIONS: (1) Is this normal for it th behave unexpectedly? (2) Is this odd problem will be solved when I have the Loewe DSP amp and TV recode by dealer? (3) What else can I do / check if these strange problem is not "recode" related?

BTW, car is 98 E38 with NAV retrofit with original Loewe DSP amp, newer PI CDC, MK4, TV module, and 4:3 display.

• DSP amp problem- Car was retrofited with NAV couple mos ago but - bmw635 2007-12-02 06:37:51 (191 views)
  • DONE! It's doesn't pay to be perfect! Undo all the components in the trunk, pull - bmw635 2007-12-07 18:06:10 (143 views)
  • Update:I disconnected the TV & harness from NAV system so it's just OE NAV - bmw635 2007-12-05 14:53:35 (118 views)
    • Here's a link to an online WDS for the X5... (url) - Brian 2007-12-05 15:41:15 (160 views)
      • OK, I jumped I-bus from TV conn to DSP amp and I have CD sound but no tape, TV, - bmw635 2007-12-05 18:07:07 (143 views)
        • Right now, all of your problems are related to the wiring... (url) - Brian 2007-12-05 19:09:47 (143 views)
          • Looks like I am in for a long haul to hunt for the I-bus. All the connector are (url) - bmw635 2007-12-05 23:15:04 (120 views)
            • Protocol cannot be screwed up - kiwijochen 2007-12-06 00:03:13 (112 views)
              • What type of controls does the LCM or MID have on the I-bus,NAV, etc...? - bmw635 2007-12-06 12:30:32 (113 views)
                • Far too many to mention! - kiwijochen 2007-12-07 21:26:16 (108 views)
              • KIwijohcen, (nt) - bmw635 2007-12-06 11:54:31 (113 views)
  • First step is to code properly - kiwijochen 2007-12-02 16:12:14 (157 views)
    • Another wierd thing today: the DSP disappeared from the screen altogether, like - bmw635 2007-12-02 19:50:59 (124 views)
      • It sounds like your DSP amp lost power, ground, or I-Bus connection - Brian 2007-12-02 20:23:40 (141 views)
        • There's 4 connection on DSP amp: large speaker, I-bus, and 2 others on top - bmw635 2007-12-02 20:45:53 (124 views)
          • DSP Amp Pinouts - Brian 2007-12-02 21:35:29 (374 views)
            • Update- I have power on pin 8 &15 of 15pin conn. There's nothing on I-bus/pin#5 - bmw635 2007-12-03 22:23:33 (135 views)
              • ibus should measure 12V when quiet, around 8V when active - kiwijochen 2007-12-04 03:40:59 (115 views)
                • Any suggestion where? Is the a schematic that I can look at? - bmw635 2007-12-04 13:44:33 (114 views)
            • Thanks, I'll check this out tomorrow afternoon. (nt) - bmw635 2007-12-03 00:06:20 (124 views)
      • Correction: 'spend' to 'spent'. (nt) - bmw635 2007-12-02 20:01:02 (109 views)