I have the same model & currently the same problem. What's frustrating is that the Ho2 icon is not mentioned in the instruction booklet. I'm hoping/suspect that it may refer to excessive condensation( H2O?). & letting it dissapate a few days may solve the problem.
A. Davis
February 2007
Probably has a faulty spindle motor.
Replace with improved type; P/No. RXQ0745B.
Cobweb
May 2005
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix dvd players.