Help needed on a recalcitrant Sony DVP-S7000

are these the procedures? I copied them from the DVP S7700 FAQ database.
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Follow this procedure to troubleshoot if the DVD player cannot read or play the inserted disc.

1. Ensure the inserted disc is compatible with the DVD player.

IMPORTANT: Consult the instruction manual of the DVD player for a list of compatible discs.
2. Use a soft cloth to clean the disc.
3. Examine the disc for any cracks or scratches that might be interfering with playback.
4. Attempt to play another disc.

NOTES:
* If another disc plays in the DVD player, then the previous disc is faulty.
* Some recordable discs may not play correctly because of the quality of the recording, the physical condition of the disc, or the characteristics of the recording device or authoring software used.
5. Remove the disc from the DVD player.
6. Turn off the DVD player.
7. Unplug the power cord of the DVD player from the AC outlet.
8. Let the DVD player remain without power for 1 minute.
9. Plug the power cord back into the AC outlet.
10. Turn on the DVD player.
11. Insert the disc into the DVD player.
12. Attempt to play the disc.

Bdgregory, we are almost there. The instructions I used forced the DVP-S7000 to play a previously rejected (new) DVD by recalibration. The preliminary steps are there. But missing is the step where you input a certain (numerical?) code after turn on to force the player to play the DVD it previously could not play.

Thanks for your help

It sounds like you are talking about the code to make the Sony a multi-region player.

Thanks Rwwear, but you're on the wrong track! The problem has absolutely nothing to do with regional coding. These are regular movie DVDs from Frye's, Best Buys, etc. They will play on any other DVD player, including my Sony DVP-S9000ES. It's just that the Sony DVP-S7000 is an early, finicky model with notorious tracking problems. The code forces the player to track the specific DVD.

Use the following key press sequence:

1. Power (off)
2. Time
3. Clear
4. Power (on)

When DVP-S7000 turns on, you will see the main service menu.