E-27-00 shows up on display and the dvd door won't open

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with the unit turned off press and hold "8", and then press "x" on the unit until "unlocked" appears on the screen.

This is from page 83 of the manual regarding tray lock feature.

There are little gears to open the tray with a little rubber belt that drives it you should be able to open door and pull on tray to get disk out if not unplug it take top off push tray out Cheapper to replace player than to fix but little flap should pull down grab tray and pull

It won't play for one of two reasons:
1. There is something inside the DVD player, which keeps it from playing.
2. The DVD player's battery has run out of juice and can no longer play, meaning the player needs to be replaced.

The DVD laser pickup is at the end of life, replacement of assembly the only option, cheaper to replace the combo unit.

Someone is going to have to open the unit to see what is happening--either a disc is jammed inside or a mechanism problem.

Sometimes with unit apart you may be able to gently probe and free the jammed area--possible also something that does not belong there got inside--look closely.

The gears are jammed, the timing gear is out of sync, or a broken loading belt, or cogwheel.

The child lock is on. Press the power off until just the time shows in the display. Then press and hold the stop button until the display shows "unlocked". You should be able to open the tray now.

you should get the DVD door cleaned either profesionally or just do it yourself

The problem is the lens of your dvd. You will see the optical lens when you open the the dvd and put the disc. Cleaning the lens of the dvd, you must be very careful, never touch the lens with your hand,Use a cotton buds to wipe the the lens gently.