🚀 go-pugleaf

In article <2826@i.cc.purdue.edu> agb@i.cc.purdue.edu (Sam Habegger) writes:
>My brother dropped his Sony D-5 CD player and sent it to Sony for repair.
[....]
>
>the display continuously counts from 0 - 9 on all six characters
>of the track and time display as if it's in some self diagnostic mode.
>
>Is it possible Sony repair left it in a diagnostic mode and if so can
>anyone tell me how to put it back in play mode?

Since there are lots of D-5 owners out there, I'm posting this:

Yes, it is in service mode.  Take the bottom off the player by removing
4 screws.  Place it on the table inverted (top surface down), with
the display and keys to your left.

Find the largest IC in the right (i.e. away from the display) half of
the player.  If you have an old model, there may be a daughter board
partially covering it.

Starting from the lower right corner of this IC, move left along its
lower edge counting pins.  Find the 9th pin from the right.
Follow the foil from this pin, and you will find that it comes to
an enlarged "test pad" area a fraction of an inch below the IC.
Further, there will be a jumper soldered between this pad and an adjacent
ground pad.  Very carefully unsolder this jumper.  You have now returned
the player to normal mode, and can put it back together.

Before disabling service mode, you might want to try using the forward
and reverse search keys to move the optical pickup through its full
range, to make sure it still runs smoothly even though it has
a broken gear tooth.