Video camera error

Step 1 Look at the camcorder's display to identify if it is in Safeguard Mode. If its display indicates an error number of E01 to E06, your camcorder is in Safeguard Mode.
Step 2 Disconnect your camcorder from its power source and remove its battery by sliding the latch forward and sliding the battery down while pulling it away from the camera's body. Wait at least two minutes before continuing.
Step 3 Remove the camera's cassette by pressing the "Eject" button, waiting for the cassette door to open, and lifting it out of the tape bay. This step is only necessary if the camera indicates the E03 or E04 error code or it tells you to eject and reinsert the tape.
Step 4 Replace the camera's battery, power connection and cassette, and turn the camera on.

I GOT

According to http://www.techlore.com/article/10974/JVC-Camcorder-Stuck-in-Safe-Mode/,

"JVC notes that you are also given a malfunction code when the unit is placed into safeguard. If it displays code 01, 02, or 06 you should remove
the battery and powersupply and wait for a while. Code 03 and 04 indicate that you should eject and reinsert the tape.

If neither of these solutions work, your only alternative is to bring it to a shop or send it to JVC for diagnosis or repair. Unfortunately, there is no other way to clear the condition."

If you are getting E03 or E04 errors on every tape you try, it sounds like a servicing is required.

An excerpt from http://www.techlore.com/article/10974/JVC-Camcorder-Stuck-in-Safe-Mode/:

"JVC notes that you are also given a malfunction code when the unit is placed into safeguard. If it displays code 01, 02, or 06 you should remove
the battery and powersupply and wait for a while. Code 03 and 04 indicate that you should eject and reinsert the tape.

If neither of these solutions work, your only alternative is to bring it to a shop or send it to JVC for diagnosis or repair. Unfortunately, there is no other way to clear the condition."

According to this, E04 denotes a problem with the recording media or the mechanical bits that deal with the tape. Hopefully trying another tape helps.

I can't find e setup for sony
camcorder

Take out the battery to clear safeguard mode , if this does not work, the unit is defective and should be taken to service.

Did you try removing batteries to see if it clears error?
this is first thing to do.

Unit stuck in safeguard mode

There should be a error code,what is that?

You mix te info with Write protected tapes.
Safe guard mode is caused by the motor that takes the tape out of it's case, through the mechanics and past the video head.
If for some reason the electronics detect that it's been done by too much force, the safe guard issue promts.