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I searched EVERYWHERE looking for the manual/s on this "extinct" amp. Owner-Manuals.com made it available and for nearly nothing. Thanx to them, I can decipher the unknown cables and sort them out. Thanx, Owner-Manuals.com!!
Yes thank you i got the file i was after. There was a slight problem in my communication but it all worked out well.
A job well done.
Great manual...really saved me. The only problem is that I thought I would be able to download it directly when I paid for it but never received the download instructions until the next morning. The board trace pages were somewhat light also: really need to turn up the contrast on the printer before printing them. The schematic page was great; very clear! Well worth the money.
I've been in the electronic business for a long time. I used to buy Sam's Photofact for my needs which intailed having to go to the store and paying about $20 for a package of 3 different units so I was forced to buy more than I needed just to get one.
Owner manual is just at your keyboard and the information is almost instantansouly and the cost is very reasonable. Easy to print out if needed or simply read off of the screen. The larger the screen the better for obvious reasons.
Very good manual, at a very good price. Received in a timely manner
HOW TO REPLACE A ROTARY UPPER DRUM (777HF, 778HFMODEL)
See below for note.
1) 2) 3)
HOW TO REMOVE A ROTARY UPPER DRUM
Remove screw 1 (+P3 Ã 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 Ã 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
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 Ã 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 Ã 8). (Refer to Fig. 5.) Fix the earth shaft 2 by tightening the screw 1 (+P3 Ã 8) so that protrusion at the tip of the earth shaft contacts the center of the drum shaft.
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 Ã 8
Upper drum assembly DZR-45-R (8-848-576-02) (777HF, 778HF)
Align the two arrow marks.
Lower drum assembly DZL-51B/J-RP (8-848-666-11) (777HF, 778HF)
NOTE : There are two types of drum assembly built in models except SLV-788HF (DZH-94A/Z-RP only). [Discrimination]
UPPER DRUM ASSEMBLY DZR-45-R (777HF, 778HF) (8-848-576-02)
DRUM ASSEMBLY DZH-94A/Z-RP (8-839-044-02)
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.