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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
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I got your link from a friend and I must say that I am really satisfied with your service. Specially this B&O manual I didn't find anywhere on the web... but you could deliver it :-) . You deliver very fast and the copy is of good quality. So your webpage is bookmarked. Thanks
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This was the Sony CCU-500A Service manual I was looking for.
The price was reasonable.
The permission to download was quck.
I will use Owner-Manual.com for all my manual needs.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
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AR-405 * Note for assembling the copy lamp unit Move the copy lamp unit to the paper exit side, and fix the copy lamp unit wiht the harness guide so that the distance between the copy lamp harness and the lower frame is about 25 ~ 30 mm with the copy lamp harness extended. Shift the copy lamp unit to the paper exit side, and fix it with the harness guide so that the distance from the lower frame is about 24 ± 2mm with the copy lamp harness extended. After fixing, manually shift the copy lamp unit a few times to check that it moves smoothly. If the copy lamp harness is loosely fixed, the copy lamp unit may jump up when reading, resulting in abnormal reading. AR-2XX/3XX series
(2) Vertical image distortion balance adjustment (No. 2/3 mirror base unit installing position adjustment)
This adjustment is to adjust the parallelism of the mirror base to the OPC drum surface and the original surface. 1) Manually turn the mirror base drive pulley to bring mirror base B into contact with mirror base positioning plate. If, at that time, the front frame side and the frame side of mirror base B are brought into contact with the mirror base positioning plate simultaneously, the parallelism is correct and there is no need for adjustment.
24±2mm
AR-405
(3) Sub scanning direction distortion adjustment (Winding pulley position adjustment)
This adjustment is executed in the following cases:
25±30mm
� � �
When the mirror base drive wire is replaced. When the lamp unit, or No. 2/3 mirror holder is replaced. When a copy shown below is made.
La Lb
Paper exit direction Original Copy
1/21/1999
7�8
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