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Standard Horizon CP-150 won't find satellites

I have a CP-150. Last year, I replaced the antenna as the connector was corroded and could not be unscrewed from the unit. I sent it in for repair, and it has worked fine until now. Last week I powered the unit up and it spent over an hour "acquiring" satellites. It never got a fix. Yesterday, I powered it on and left it run overnight. 24 hours later, still no fix. The unit comes on, all the other screens seem to work, but it can't find the satellites. One or two bars show the outline symbol, but never "fill in" or turn dark. Also, the date is stuck on July 25, 2009. I tried to re-set the date on the celestial page, but when I exit that page, it reverts to July 25. The time is correct however. Is there any hope for this device? Thanks.

Robert Carr

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  • robertcar579 Sep 10, 2009

    The RAM Clear test worked. I first ran the RAM test, and it checked OK. I next reset the device and the first thing I noticed was the correct date was displayed (it was previously hung on 7/25/09). After 20 minutes it was still "acquiring" so I closed up the boat and let it continue to search for satellites. Nine hours later, I returned and it had obtained a fix. It seems to be working properly. One thing scared me for a minute, was the C-Map cartridge appeared to be "brain dead." All I saw was the base map, showing the entire continental US. I powered off, pulled the chip and checked the contacts, put it back in and powered back up. It obtained a fix immediately, but was still "zoomed way out." I began pressing the "zoom in" button and eventually zoomed in on our harbor on Lake Huron. Works perfectly. So, thanks to Titleist 7726 to always remember to RTFM (Read the Factory Manual).

    Robert Carr
    S/V Amazing Grace
    Presque Isle Harbor, MI

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Robert

It could be the RAM inside the plotter needs to be reset, Try the following procedure:

RAM Clear

Please note this procedure will erase any saved user points such as marks and routes and will put all of the internal settings back to factory default. In addition the unit will have to reacquire satellite signals, which may take a minute or two. If you have a large number of routes and/or marks you may wish to save them to a User C-Card prior to performing the RAM clear. The User C-Card is a blank memory card that is available through your local dealer or can be purchased from C-Map directly by contacting them at (800) 424-2627.

1) With power to the GPS turned off press and
hold the ENTER key.
2) Now press and hold the PWR key.
3) Keep both keys pressed until the GPS screen lights up and you see the SYSTEM TEST page displayed, then you can release both keys.

Note: If the GPS is not able to be turned off using the PWR key you can turn power off at the breaker or disconnect the power cable, press and hold the ENTER key then turn the breaker on or plug the power cable back in.

4) Make sure that the RAM menu function is selected, then press the ENTER key.
5) A sub-menu will appear that has two selections; RAM test and RAM clear, move the shuttle point knob down to select RAM clear.
6) Press the ENTER key, a prompt will appear asking if you are sure that you want to clear the RAM. Press the ENTER key to confirm and a prompt will now appear that informs you that the RAM has been cleared.
7) Press the CLEAR key and you will be back on
the SYSTEM TEST page.
8) Press and hold the PWR key until the unit turns off, then press and hold the PWR key until the unit turns back on again.

Posted on Sep 08, 2009

Testimonial: "Good advice. I'd forgotten about reset and clear. I'll try this and see. I'll report back any results. Thanks."

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