Superb rendition. Drawings (schematics) complete and unabridged. I do a great deal of vintage audio restoration. Documentation is essential for successful repairs. I have found sources over the years that offer good documentation, but rarely all that is necessary. Owner's Manuals has filled that void with complete and legible documentation. They have narrowed my "favorites" to a more manageable collection. This Denon manual in particular contained the latest revisions level, and offered alterations favorable to updating the item. The Illustrated Parts Breakdown (IPB) was well enough detailed to simplify part symbols and physical locations. You will not be disappointed!
very fast detailed and accurate hope to do business again
Text excerpt from page 9 (click to view)
4. TROUBLE SHOOTING GUIDE
TROUBLE
SUCTION POWER IS WEAK
CAUSE
FILTER BAG(PAPER OR CLOTH) IS FULL WITH DUST CLOGGING OR TEAR IN HOSE
COUNTERMEASURE
CHANGE IT WITH NEW ONE OR REMOVE THE DUST REMOVE OBSCTACLE OR REPLACE THE HOSE
DEFECTIVE MOTOR
REPLACE THE MOTOR (SEE 5-2)
CLEANER DOES NOT WORK
BREAKING IN POWER CORD (AT BLADE TIP OR ROOT OF PLUG) DEFECTIVE SLIDE VOLUME LOCATED IN COVER BODY DEFECTIVE PCB ASSEMBLY BREAKING OF CONNECTIONS OR POOR CONTACTS IN CORD REEL ASSEMBLY DEFECTIVE MOTOR BREAKING OF CONNECTIONS IN COVER BODY ASSEMBLY DEFECTIVE SWITCH
REPLACE THE POWER CORD (SEE 5-3)
REPLACE IT (SEE 5-5) REPLACE IT (SEE 5-5) REPAIR (SEE 5-3)
REPLACE IT (SEE 5-2)
REPAIR (SEE 5-5) REPLACE IT (SEE 5-5) REPLACE IT (SEE 5-5)
MOTOR DOES NOT STOP EVEN IF SWITCH
DEFECTIVE PCB ASSEMBLY
TROUBLE
POWER CORD IS NOT WOUND UP
CAUSE
BROKEN REEL SPRING OF CORD REEL POWER CORD BROKE AWAY FROM THE BOBBIN
COUNTERMEASURE
REPLACE IT (SEE 5-3)
REPAIR (SEE 5-3)
CAUTION : BE CAREFUL WHEN BREAKING UP THE CORD REEL, THE REEL SPRING MAY SPRING OUT OF THE SPRING COVER. POWER CORD DOES NOT STOP AT AN ARBITRARY POSITION ABRASION OF THE ROLLER BRAKE OF CORD REEL LEVER SPRING BROKE AWAY FROM THE CORD REEL BRACKET REPLACE THE ROLLER BRAKE (SEE 5-3) REPAIR (SEE 5-3)