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rip
Joined: 27 Apr 2008 Posts: 4
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Posted: Mon Apr 28, 2008 10:43 pm Post subject: Pioneer KEH-M9500RDS car stereo doesn't find changer CDX-M30 |
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Hello,
I have a Pioneer KEH-M9500RDS car stereo with a cd-changer CDX-M30. Now the stereo doesn't find the changer. It acts like there were no changer connected and the stereo has a very slow reaction when a button is pressed. Its like a overloaded computer.
I replaced the changer with another used one, but the problem still remains.
The unit works normal when the changer is disconnected.
I have no schematics, so I can only guess that there's something wrong with the connection-bus. The data-cable between the devices is ok, all pins are connected, no short cuts between the pins.
Any idea what's wrong here??
Has anyone a schematic about the pioneer bus? All units called KEH-M.... should have the same bus.
Thanks, rip |
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kenray Guest
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Posted: Fri May 02, 2008 12:40 am Post subject: |
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It's possible you may have a bad ic in the head unit that is not interfacing with the main microprocessor. |
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rip
Joined: 27 Apr 2008 Posts: 4
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Posted: Fri May 02, 2008 1:08 am Post subject: |
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Maybe, but w/o docs...
CU, rip |
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kenray Guest
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Posted: Fri May 02, 2008 4:54 pm Post subject: |
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the ic would more than likely be fairly close to the din cord input for the changer. |
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rip
Joined: 27 Apr 2008 Posts: 4
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Posted: Sun May 04, 2008 11:25 pm Post subject: |
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The problem is solved.
It was a broken circuit path. There was no visible damage, but you can't fool a ohmmeter.
I fixed it with the red wire.
rip |
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