Alpine cde 7825 will not function properly

SOURCE: Alpine CDE 9881

You must have a faceplate from that exact model, no others will work. You can try to contact Alpine for a replacement. If it is any consolation, someone has a useless faceplate, because it won't work with anything else, either. Try running an ad in your local lost & found column, you just might get lucky, especially if you offer a reward.

SOURCE: Alpine CDE-9843

Page 16 of the manual:
http://vault.alpine-usa.com/products/documents/CDE-9841,%2043,%2045%20OM.PDF

Setting Time
1 In the Clock priority mode, press and hold
TITLE for at least 2 seconds while the time is
displayed.
The time indication will blink.
2 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the hours while the time indication is blinking.
3 When the hour has been adjusted, press the
Rotary encoder (CDE-9845/CDE-9843 only) or
press MODE (CDE-9841 only).
4 Turn the Rotary encoder (CDE-9845/CDE-9843
only) or press 4 and 3 (CDE-9841 only) to adjust
the minutes while the time indication is blinking.
The time is automatically set 5 seconds after the minute
adjustment. The time can also be manually set by
pressing the Rotary encoder (CDE-9845/CDE-9843 only)
or press MODE (CDE-9841 only).
• To synchronize the clock to another clock/watch or radio time
announcement, press and hold the Rotary encoder (CDE-9845/
CDE-9843 only) or press and hold MODE (CDE-9841 only) for at
least 2 seconds after setting the “hour.” Minutes will reset to 00. If
the display shows over “30” minutes when you do this, the time
will advance one hour.

SOURCE: how do I set the clock in Alpine CDE-9872 CD receiver?

From the Owners Manual for the CDE-9872:

FixYa won't allow images larger than 150k, so that's why this is a little blurry.
I hope this helps! Please post rating, if it does.
Regards,
Char1ieJ

SOURCE: Alpine CDE 7853 removal

remove the face and then the trim ring for face you should see 2 little pins on either side of the radio slide them up and it should slide right out

SOURCE: Alpine CDE-102 w/usb port: will not

Hello desoren,

The receiver may not be set to recognize MP3 files.

Press and hold "sound setup" until the unit enters setup mode. Rotate the volume knob to "play mode" and press "enter". Check that the setting is CD/MP3 (not CD/MA), or rotate the volume knob to change the setting to CD/MP3 and press enter again. Press and hold "sound setup" again until the unit exits sound setup.

If the files are still not recognized, I'd try using a different USB drive, a different computer to write the MP3's, and/or a different application to download or rip the original music content.

Hope this helps.