What does Ho1 mean on the screen?

U should contact Bosch with this error massage your power module lock down

It is a flame loss error. Open the unit up Clean both of the flame sensors with either a file or steel wool (with the power off) then turn power back on and reset the screen to do this hold down all 3 buttons for 10 sec. there should be 2 buttons on one side and 1 on the other. hope this helped :)

On some Panasonic models it could mean that the head isn't turning or there's no drive to it

Hi I have the error code ho2 on my Hoover wash machine does any one no what it means

www.manfrottotripodparts.com

that means there is a driver issue choose start windows normally and let it run through that routine

Mode switch, plunger, or capstan motor defective

most of no signal means dsr 11 or similar machines have dirty heads. When they get dirt sometimes, you can´t play a cassette and the machine turns off (with the cassette in).
I´ve tried several times to reload the cassette and I manage to make it work again.
with the cassette in and the machine off press at the same time power and fast forward.
When in fast forward press play and your head should be starting to be clean (takes 4 o 5 minutes
to get a clean picture). Normally the machine gives a code error like if it was a loading problem but
not nearly related