Wanting to repair a neighbours tape recorder I needed the necessary information, it makes it easier. Although the service manual is described as "Language : English" To my dismay I found that it is entirely written in German, a language I do not understand. At least I now have the schematics which will help of sorts. I may not use this service again due to the laguage difficulty after all when it states English you do not expect it to be entirely in another language.
Good quality (clearly readable) manual, I'm glad I could find it here, at a bargain price!
Text excerpt from page 31 (click to view)
10 Maintenace
10.1. Cleaning Lens and LCD Panel
Do not touch the surface of lens and LCD Panel with your hand. When cleaning the lens, use air-Blower to blow off the dust. When cleaning the LCD Panel, dampen the lens cleaning paper with lens cleaner, and the gently wipe the their surface. Note: The Lens Cleaning KIT ; VFK1900BK (Only supplied as 10 set/Box) is available as Service Aid.