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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.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
KP-51WS510/57WS510/65WS510
2-4. FOCUS LENS ADJUSTMENT
In this adjustment, use the remote commander while in service mode. For details on the usage of the service mode and the remote commander, please refer to section 2-10. ELECTRICAL ADJUSTMENTS BY REMOTE COMMANDER. 1. Loosen the lens screw. 2. Cover the red and blue CRT lenses with lens caps to allow only green to show (or use the method shown in the note below for turning off the CRTs individually without using lens caps). 3. Turn the green lens to adjust to the optimum focus point with the crosshatch signal. 4. Tighten the lens screw. 5. Cover the green and blue CRT lenses with the lens caps to allow only red to show (or use the method shown in the note below for turning off the CRTs individually without using lens caps). 6. Turn the red lens to adjust to the optimum focus point with the crosshatch signal. 7. Tighten the lens screw. 8. Cover the green and red CRT lenses with the lens caps to allow only blue to show (or use the method shown in the note below for turning off the CRTs individually without using lens caps). 9. Turn the blue lens to adjust to the optimum focus point with the crosshatch signal. 10. Tighten the lens screw. 11. After adjusting the items: 2-5. FOCUS VR ADJUSTMENT, 2-6. 2-POLE MAGNET ADJUSTMENT, 2-8. 4-POLE MAGNET ADJUSTMENT, Reconfirm the optimum focus point and adjust again if necessary. * Every time 6 is pressed, the test signal changes to: �crosshatch+video signal� � �crosshatch+borderline (black)� � �crosshatch (black)� � �dots (black)� � off
2-5. FOCUS VR ADJUSTMENT
1. Set generator to crosshatch. 2. Cover the red and blue CRT lenses with lens caps to allow only green to show (or use the method shown in the note below for turning off the CRTs individually without using lens caps). 3. Turn the green focus VR on the focus block to adjust to the optimum focus point with the crosshatch signal. 4. Cover the green and blue picture lenses with lens caps to allow only red to show (or use the method shown in the note below for turning off the CRTs individually without using lens caps). focus point with the crosshatch signal.
5. Turn the red focus VR on the focus block to adjust to the optimum 6. Cover the green and red picture lenses with lens caps to allow only blue to show (or use the method shown in the note below for turning off the CRTs individually without using lens caps). 7. Turn the blue focus VR on the focus block to adjust to the optimum focus point with the crosshatch signal. 8. After adjusting the items: 2-4. FOCUS LENS ADJUSTMENT, 2-6. 2-POLE MAGNET AND CENTERING ADJUSTMENT, 2-8. 4-POLE MAGNET ADJUSTMENT, Reconfirm the optimum focus point and adjust again if necessary. Note: If lens caps are unavailable, you can cut off the unnecessary color beams by controlling the service mode 2150P-2 1 RGBS.
Scanning line visible.
A Minimize both A and B.
Lens
B
Center of crosshatch
Test Signal Note: If lens caps are unavailable, you can cut off the unnecessary color beams by controlling the service mode 2150P-2 1 RGBS.
� 16 �
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