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Quality scan, great manual. I solved my problem with this manual.
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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.
VAA12901-R.3594.A CHECK THE PERFORMANCE AND RESOLUTION �Be sure to check when dissemble and repair the lens-barrel
�(1) Check the performance �� Repeat the following performance several times: After tuning the power switch ON and driving the zoom, turn it OFF. � Confirm that there is no abnormal operation by repeating to check the release performance several times. �(2) Check the resolution By photographying the high-definition resolution chart (J63079), confirm that the TV lines are within the standard. � Standard for the TV lines: more than 1100 TV lines in the Center; more than 750 TVs in the 4 corners. (ref.�The resolution is based on the unit of TV lines that are black-and-white strips distinguished in the TV screen.) (a) The camera is set as follows to take photos: Shooting-mode: Auto, Image quality mode: FINE, Image size: 2272, Flash mode: Flash cancel (b) The uneven pattern in luminance of the chart does not affect, but photograph with the luminance (ISO100, 1/15-1/250) by which the aperture is open. (c) Check the zoom position in the order of WIDE, MIDDLE (press the button 6 times starting from WIDE) and TELE. The object distance is WIDE: approx.65cm, MIDDLE: approx.115cm, TELE: approx.185cm. Set the chart fully screened in the LCD of the camera, and fix on a tripod. (d) Open the photographed image by Photoshop, and confirm it by the magnified display, e.g. 100%, etc. (e) Regarding the resolution of the frame center and the 4 corners, check if it is clear in black and white in the position circled in red as shown in the below.
�
�In case either (1) or (2) of the above fails, it is necessary to replace the lens-barrel group unit with the new one.
High-definition resolution chart (J63079) -A6-1 ï½¥ E4300 -
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