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.
The manual was properly scanned and perfectly readable. The only small problem is that I couldn't use my dear Ctrl + F to find a word I needed.
Text excerpt from page 10 (click to view)
How to Remove and Check Clear Tubes
Low suction or poor pickup may be due to a blockage in the vacuum cleaner. To Check Attachment Hose 1. Move hose/floor valve (A) to hose position. 2. Remove hose (B) and check suction at end of hose - if little or no suction, check disposable dust bag and filters. Change if needed. If no improvement proceed to step 3. NOTE: Turn off the switch and unplug the electrical cord before checking tubes. To Check Large Base Hose coming from hood, go directly to step 3. 3. Turn quarter turn fastener (C) to unlock. 4. Lift latch (D). 5. Pull small clear tube (E) down and away from cleaner. 6. At hose/clear tube connection, rotate twist lock (F) to release tube. 7. Check for blockages. 8. Remove large clear tube (G) by swinging back and pulling down and away from cleaner. 9. At large hose/clear tube connection, rotate twist lock (H) to release tube. 10. Check for blockages in both clear tubes (E/G) and both hoses (I). NOTE: Clean tubes with mild detergent. Do not put them in a dishwasher. Make sure all parts are completely dry prior to reassembling. D A