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.
Good list of manuals. I found a very rare one and easily get. Should be promptly to download, as we must to wait hours even after confirmed payment.
Text excerpt from page 9 (click to view)
GB
It is possible to scrape off and remove smaller frost and ice with the enclosed ice scraper. The tray in figure is not a piece of accessories to the appliance! When ice coating is so thick that it can not be removed with the frost scraper defrosting is necessary. Its frequency depends on usage. How to defrost it: Break the circuit of the appliance. Take the frozen foods out of the appliance and put them into a basket lined with paper or cloth. Store them in a possibly cool place or replace them into a frozen or fresh food compartment of a refrigerator. Leave the door open. Sweep off the melting water occasionally with a cloth or sponge in direction of sides which gathers in the outlet channel practically formed in the bottom of the appliance and can be removed as follows: Put an tray high enough in front of the appliance. Pull out defrost water outlet placed in the middle of the bottom of the appliance carefully in the direction of the arrow. Defrost water will flow into the tray through the outlet. Defrosting process can be made quicker by placing a pot or dish filled with warm water to the cooling plate formed as a shelf. After defrosting wipe the surfaces and push defrost water outlet back. Apply voltage to the appliance. After the red light has gone out put the foods back.
Regular cleaning
It is practical to clean the inside of the freezer and defrost it at a time. Household cleaner or soap must not be used. After breaking the circuit wash the appliance using lukewarm water and wipe it. Clean the door gasket with clean water. After cleaning apply voltage to the appliance. It is recommended to remove the dust and dirt collected on the back of the appliance and the condenser once or twice a year.