Actually, I was looking for this information for 3 years!...now thanks to you, the manual is on my hands and of great help, cause I understand now where I was doing wrong connections and wires...excellent, I'll be back to you if in need, thank you.
This manual covers the main equipment features only. While it also includes the procedure for saving and loading from the now long obsolete memory cards it does not mention the how to operate with the optional floppy drive interface so I am still at a loss about how to use this! Note that there is a separate manual covering the MIDI interface and programming via the keyboard, not included in this download. You will also need to get hold of this if you want to use the MIDI interface properly. Basically there is little difference between this manual and the free to download manual for the similar PR60 model.
Text excerpt from page 7 (click to view)
SONATA 50 GX
The grill
The grill is a high-speed grill. The instructions below tell you how to vary the heat setting and how to change the height of the trivet to suit the food you are cooking. You should remember to turn the food regularly. You should not use the grill to keep food warm as it will continue to cook the food.
For your safety
You must keep the grill door open when the grill burner is lit. Accessible parts may be hot when the grill is used. Young children should be kept away.
Heat control
The grill control has two heat settings. The control knob turns to the right from 'OFF' to 'HIGH' and then to 'LOW'. Use the high setting for fast cooking such as toast. Use the low setting to cook thicker food such as chicken after you have browned it on the high setting.
Cooking positions
You can put the grill shelf in either of the two positions. Most food should be cooked on the grid in the grill pan. You can turn the grid over to suit different thicknesses of food. You can place some dishes straight on to the grill shelf. This is useful when you are browning the top of food such as cauliflower cheese.