If you are using imagex, I think you have to create the destination partitions and volumes first. I can see that you wipe the disk, but do not see that you are creating any partitions or volumes before running imagex.... I use imagew (which can restore to an unpartitioned disk), but I think imagex/dism cannot.
Review the deployimageactionhandler.log on the client in the windows\temp directory. This may point to a maptopreferrredserverhandler.log. That will give more insight into the failure.
Most likely you are getting an authentication error because of the mapped drives. When you set the image type to imagex or imagew v2 in 9.5 t will automatically map a driver for you, so you no longer need that action. If it tries to map again, and uses a different user, windows will reject the authentication.
We just had to change passwords on our Image Deploy and now we are getting the following error. Using ImageW V2, with landesk 9.5.
action index=15676 type = Deploy_Image
error: [80001803H] The action failed.
I am using an account that has access to the image directory. I am currently re keying the credintials. Is there any other suggestions because once our template gets to this point windows is no longer on the machine.