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CDM1250 ignition problem
Posted: Tue May 08, 2007 9:34 am
by Andy2712
I have a CDM1250 installed in one of our trucks on a battery switch. I wired it up with the ignition sensing wire at pin 10. The radio comes on when power is turned on at the batter switch, but it will not turn on at the last channel it was on or with the scan on. Any thoughts, tips, or suggestions? Thanks.
Andy
Posted: Tue May 08, 2007 10:08 am
by HLA
your main power line is switched too. give the main power line a constant 12v and that will do what you want.
Posted: Tue May 08, 2007 4:52 pm
by ve3nsv
Confirmed to work.
Thanks to RFguy
The new firmware (R05.0515) was to fix the dreaded CS EEPROM Error / HW EEPROM Error problem.
Motorola tells me the problem was a result of "constantly writing the channel information to memory.
Now they no longer write channel information to memory except on a soft power down (front power switch or ignition lead.
This is why if you change channel, power cycle with front power switch and then kill the power to the radio things are good (but we still have complaints of randon channels after power up).
How hard is it to change the software so that when you press the channel up butoon the radio 1) increments channel 2) writes channel info to memory.