JVC GR - DVL300

E04 Unit in safeguard mode : Remove and Reattach Battery

I have had this same problem since my warranty ran out on my JVC DV camcorder. When I turn it on to record or play, a code appears on the display screen "E04 Remove and reattach battery. Unit in safegaurd mode." I have tried to remove the battery and replace it and I have the head cleaned. Twice I have brought it in for repairs but over time the same thing comes up. Can any one tell me what causes this and how to rectify it.

Reply

• Re: JVC GR - DVL300
  Sandy
  - 9th Dec 2005 6:54
  I can't tell you how to fix it cuz I have taken mine in 6 times for this problem and it always comes back. I have since replaced it with another model.
  
  
• Re: JVC GR - DVL300
  jeff sloss
  - 10th Dec 2005 8:14
  Every time I turn camera on it comes up with E-02 unit in safe guard mode
  
  
• Re: JVC GR - DVL300
  Richard
  - 13th Dec 2005 21:23
  I've got the GR-DVL355 and had the same problem as everyone is writing about and I've just fixed it.....
  
  All you need is some Mr Muscle Window & glass cleaner and 2 cotton buds.
  
  Firstly take off the battery and unplug and mains adapters.
  
  Secondly using the glass cleaner and a cotton bud clean the pinch roller - this is the black rubber roller next to the white guide. You need to press quite hard and expect to get a dirty cotton bud once done.
  
  Lastly using a different bud clean the head by holding the bud against it and spinning it.
  
  Do this twice and hey presto....well it worked for me.
  
  
• Re: JVC GR - DVL300 Emil Atanassov - 26th Dec 2005 5:37
  I bought my jvc grd-22u like a year ago, used it only 2-3 times and it doesn't work no more.I took it with me to Europe this summer and when I turn it on nothing comes on the screen.I guess I have the same problem like you guys.
  It never worked again...
  
  
• Re: JVC GR - DVL300
  Sundeep
  - 26th Dec 2005 19:09
  I have GR-DVL805. Same problem. Gave camera good ahrd 4-5 whacks after reading the postings here. Works like a charm now. I was ready to buy a new camera but glad dont have to
  
  
• Re: JVC GR - DVL300
  Alper
  - 12th Jan 2006 23:27
  JVC GR-DVL9800. Same Problem E04 "Unit in safeguard mode" "remove and reattach battery". Ejected the cassette and just when it was about to eject, pushed it in... and the error is gone. Thanks!!
  
  
• Re: JVC GR - DVL300 Niek Wellink - 15th Jan 2006 12:45
  Got this E01 Unit in safeguard mode error on my DVL355; with the mechanism locked half-way. Removing the battery did not work so I could not get my tape out and was not able to close the lid. I tried for an hour to get it to close again.
  Then, I followed the advice on this site and hit the camera (once, with the knuckle of my finger) next to the speaker immediately after I reattached the battery.
  Worked like a charm! (and for JVC product development/service: BOOOOH)
  
  
• Re: JVC GR - DVL805 Sundar - 15th Jan 2006 12:52
  This is the most ingenious idea i have ever heard. I too had the same trouble. Tried whacking and lo ! the camera worked !!
  
  
• Re: JVC GR - DVL300 Rexdreamer - 18th Jan 2006 1:39
  Hi Guys
  E06 is a capstan error message, that mechanism is super sensitive, but a good one and can be repaired pretty reasonably. Let me know through email if you need anything.
  Rex
  
  
• Re: JVC GR - DVL300
  Lynda Hudson
  - 21st Jan 2006 17:41
  I have a JVC GR-DVF-21 and am having this same problem of an E04 error message. Did anyone figure out what causes this?