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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!
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Clear and concise. Saved me a lot of time and money.
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Superb manual. Exactly what I ordered and made available in a very timely manner.
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very fast detailed and accurate hope to do business again
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This was precisely what I was looking for. Complete and good quality!
2.
HOW TO REPLACE A ROTARY UPPER DRUM
See below for note.
2-1.
1) 2) 3)
HOW TO REMOVE A ROTARY UPPER DRUM
2-2.
1) 2)
Remove screw 1 (+P3 � 8) and remove the ground shaft assembly 2. (Refer to Fig. 4.) Remove soldering which is marked by arrow and remove the rotary upper drum board completely. Remove two screws 3 (PSW3 � 8) and remove the rotary upper drum in the direction of A. (Refer to Fig. 5.) If removal is difficult, remove it while rotating it slowly.
HOW TO ATTACH A NEW ROTARY UPPER DRUM
3)
Pay attention so that finger print or like must not be put when inserting a new upper drum into lower drum. Align mark of the rotary upper drum board with the mark of the rotary transformer board so that the screw hole on the upper drum and that on the lower drum are aligned. (Refer to Fig. 5.) If attaching is difficult, attach a upper drum while rotating it slowly.
Note: If removal is difficult, check again if soldering is removed completely.
2 Ground shaft assembly 1 Screw (+P3 � 8)
Note: Pay attention not to damage the video heads. Confirm that the upper drum is inserted completely. 4) 5) Tighten the two screws 3 (PSW3 � 8). (Refer to Fig. 5.) Fix the earth shaft 2 by tightening the screw 1 (+P3 � 8) so that protrusion at the tip of the earth shaft contacts the center of the drum shaft.
Soldering Soldering
4 Plate spring
Drum when viewed from the top
Note: When attaching the ground shaft assembly 2, never give force to the plate spring 4.
3 PSW3 � 8
Upper drum assembly DZR-51-R (8-848-594-02) (998HF) DZR-45-R (8-848-576-02) (EXCEPT 998HF)
A
Align the two arrow marks.
Fig. 4
Lower drum assembly DZL-51B/J-RP (8-848-666-11)
Fig. 5
Note : There are two types of drum assembly built in models. [Discrimination]
UPPER DRUM ASSEMBLY DZR-51-R (998HF) (8-848-594-02) DZR-45-R (Except 998HF) (8-848-576-02)
DRUM ASSEMBLY DZH-96A-R (998HF) (8-839-046-02) DZH-94A/Z-RP (Except 998HF) (8-839-044-02)
�Top View�
�Top View�
There are two printed circuit boards on the top.
There is no printed circuit board.
Note: It cannot be divided to two parts, the upper and the lower drum assemblies.
�7�
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