Empty tape drive acts as if it has a tape in it.

Hello, if it has an eject button, press it quickly several times (can't remember the exact number; try 3 first, then 5, then 7)the reason being that on earlier DLT's the firmware would cause a drive reset which would, if there wasn't a detached leader or other physical problem, result in a tape unload.
p.s. do let me know how you get on!
Regards,
nicam49

Have to tried another tape

If the mechanism is physically damage, then I think disassemble the drive unit is so make sense.

plz follow the steps below:

Step 1 Locate the "On" button located on the top right side of the Lexmark 2600 Series Printer Scanner. Turn the unit on by pressing and releasing the "On" button one time.

Step 2 Raise the scanner unit until it locks into place. Allow the print cartridge carrier to move to the loading position. Wait for the print cartridge carrier to stop moving.

Step 3 Locate the color print cartridge in the carrier on the right. Release the empty color print cartridge by pressing down on the cartridge carrier latch. Raise the cartridge carrier lid. Remove the empty color cartridge by pulling it straight up. Place the empty cartridge in the plastic bag and set aside for recycling.

Step 4 Remove the new color cartridge from its packaging. Remove the protective tape from the nozzle and connector on the back and bottom of the color cartridge. Dispose of the protective tape.

Step 5 Install the new color cartridge into the right cartridge carrier slot. Close the cartridge carrier lid. Press down on the cartridge carrier lid until it clicks into place.

Step 6 Raise the scanning unit slightly. Release the scanning unit support. Close the scanning unit.

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Thanks

For that you can try to press and hold the eject buttonfor 30 seconds if the tape doesn't came out then reflash the drive firmware revision.
After all that is the issue persists you can try to:
manually remove the tape by removing the top cover
Locate recessed thumb wheel
Rotate thumb wheel counter-clockwise until you feel resistance. Wheel may spring back when you release it. This is OK.
Locate hole in bottom of drive. Insert #10 Torx driver and rotate clockwise until tape ejects. If there is a lot of tape on the take up reel, this could take some time.
Rotate thumb wheel clockwise to eject the tape.

google info

you need to get to the underside of the tape drive itself, there is usually a manual tape release mechanism built in however it usually requires the user to wind the tape off off the spools until it is fully disengaged from the spool and then to unload the tape there are usually magnetic servos and lever arms that need to be moved to release the tape itself, without being able to see the drive myself I could not begin to explain further as each manufacturer's mechanism is different, however the tape release looks like a recessed screw on the underside.

it is possible that if you manage to rewind the tape using the manual release, that reconnecting the drive may allow the drive to eject the tape using the eject button on the front panel

Belts have become too slack to allow mechanism drive. Have replaced

Some dual decks use a common drive belt. It may have become too slack (due to age) to drive mechanism. I am sure its time to change all belts in both decks. This will solve the problem

sir you need to replace your cd drive , it is physical problem of cd rom drive replacement/repair is only solution , out of with repair will be costly and repalcement best solution