Question about Sony DAV-C900 System

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Sony DAV-C700: won't play DVD's or reject disc's

I press any button on the remote and all I get is C-81 on the screen. Tuner works fine.

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Unplug-it-and-plug-it-back-in-trick works many a times.
This C-81 error is a hardware problem caused by a faulty electronics part on the DVD board. Switching on and off wont help. The units have to be repaired by a qualified tech.

Check this link for detail.
http://www.agoraquest.com/viewtopic.php?topic=1783&forum=50&start=0&select_page_number=1

Thanks
Kevin

Posted on Jun 29, 2009

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Tip

Sony DAV-C700, DAV-S400, DAV-S500, DAV-S800, CMT-S9D region free unlock code


Introduction

The DVD Upgrade is an advanced modification to your DVD player, which adds extra features and enables you to get more from your machine. The upgrade supplements the DVD player and in no way harms the playback quality or removes any performance features of the machine.

Players Supported

The following DVD players are supported by this version of the DVD Upgrade:

 Sony DAV-C700
 Sony DAV-S400
 Sony DAV-S500
 Sony DAV-S800
 Sony CMT-S9D

Macrovision & CGMS disable

All DVD players have a system called Macrovision built in to the player, which is designed to stop the copying of DVD discs to video. However, this system can have adverse affects on some projectors. For this reason the DVD MOD Upgrade disables Macrovision to solve any problems.

User manual

Put your player into „Standby“ Mode and enter one of the following commands if necessary:

Remote control command Function
[0] [ENTER] Default Default region code on the player
[1] [ENTER] Region 1
[2] [ENTER] Region 2
[3] [ENTER] Region 3
[4] [ENTER] Region 4
[5] [ENTER] Region 5
[6] [ENTER] Region 6
[7] [ENTER] Region 7
[8] [ENTER] Region 8
[Arrow down] [ENTER] Only play DVDs with the selected region; auto switching OFF
[Arrow up] [ENTER] Default Auto switching ON
[PREV I<<] [ENTER] Enable video interference impulses (Macrovision ON)
[NEXT >>I] [ENTER] Default Disable video interference impulses (Macrovision OFF)
[Arrow left] [ENTER] Enable user operation prohibitions* and access restrictions
[Arrow right] [ENTER] Default Disable user operation prohibitions* and access restrictions

* The DVD can no longer prohibit you from using the fast-forward, chapter change or Audio-/Subtitle-/Angle switch. You can no longer be forced to watch intros. Just press [TITLE] or [DVD MENU] and select PLAY.

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1 Answer

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A bizarre coincidence but our Sony DVD player DAV C700 did exactly the same when the kids were watching a DVD. All other functions on the system are still working but the DVD player wll not eject or play - and the self diagnosis function C 81 remains illuminated on the display.

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Sony DAV-C900 Home Theater System: problems with speakers and dvd picture quality Hello all, I hope someone can help me here... The speakers have been going off and on intermittently for a while now. I have cleaned the connections, but it does no good. Sony has these stupid color coded connectors and I do not know how to go about upgrading the wires. If that is even the problem. I have switched the wires around, and when I switch one that works to a non-working connector it will not work. When I put a non-working speaker wire into one of the working connectors, it will work--it almost seems to me that it is either a problem internally, or with that specific connector that sticks out of the rear of the unit. After fooling around with them for a while, I can usually get it to work, but then it will go out for no apparent reason. Another problem has to do with the picture. It has developed these squiggly lines while watching dvd's. Sometimes they go away after a while, but it is certainly annoying. I have attempted to clean the laser with one of those dvd cleaning disc's and even replaced the s-video cable, but neither has resolved this problem. It used to have an excellent picture, even though I wasn't using component cables. Due to my TV set-up, I need to use the S-video hook-up, but like I said it has always worked well until recently... We really do not watch that many movies, so I wouldn't think the laser is going bad--hell, the kids have many more hours on their xbox than this unit has...If I had the money, I would just go out buy a new system--not an HTIB this time, but this year has not been too lucrative, so I am stuck with this for the time. Any help will be greatly appreciated. Thanks Dana

Feb 22, 2007 | Sony DAV-C900 System

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