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Sharp GF-777 Disassembly Instructions Manual page 14

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Before closing up completely, you might want to adjust the motor speed for each deck and check the
azimuth on the play heads for each deck.
To adjust the motor speed, insert a small, flat-head screwdriver (preferably plastic and approx. 3/32"
head size) into the opening on the back of the motor. Carefully turn the screwdriver until you feel
the slot of the screw. Turning the screw clockwise will increase the motor speed. Likewise, turning
the screw counter-clockwise will decrease motor speed. If you don't have the "official" means of
testing correct speed (e.g. test-tone tapes, oscilloscopes, etc.), you might have luck with my method.
I had a commercial copy of a U.T.F.O. cassette as my test cassette. I ripped my commercial CD of
the same U.T.F.O. album and converted the tracks to MP3 files, which were then copied onto my
MP3 player. I played the tape and MP3 player at the same time until the tracks were matched as
closely as possible. When you have an extremely slow phasing effect (when the two sources seem to
cancel each other out), you've got a tape speed that will be very close to true.
To adjust the azimuth for the play head, first remove the faceplates from the cassette doors. You
will notice under the tape door there are a couple of small holes, maybe three. You can access the
tape head through the largest of the holes with a very small Phillips-head screwdriver. Put a tape in
and press PLAY and, very gently, adjust the tape head by turning the screw left or right. Try just a
little at first and you'll notice the sound change. Using quality headphones will help tremendously
with this. You should be able to locate the correct position before too long!
(Azimuth tip courtesy of Mirko Henriquez aka Beatbox)
I hope this tutorial made sense. If you have any questions, please contact Fatdog on the
Stereo2Go.com forum!
Thanks FYJ2972, Litfan, Beatbox, and many others whose advice allowed me to repair my GF-777!

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