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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!
A+++++++++++++++++++++++++
DCR-HC16E/HC18E/HC20/HC20E
4-3. PRINTED WIRING BOARDS
THIS NOTE IS COMMON FOR WIRING BOARDS (In addition to this, the necessary note is printed in each block)
(For printed wiring boards) � : Uses unleaded solder. � : Pattern from the side which enables seeing. (The other layers� patterns are not indicated) � Through hole is omitted. � Circled numbers refer to waveforms. � There are a few cases that the part printed on diagram isn�t mounted in this model. � C: panel designation
� Chip parts. Transistor
C 654 456 5 44 5
Diode
3 3 3 123
B
E
123 321 123 321 1 22 13 4
2 1
12 23
12 4 4
1 654 3 3 4
543 345 2
1
4 5
32 4
6
11 4
2
2
1
1
31
3
BOARD INFORMATION board name CD-489 IR-051 JK-260 LB-095 SE-141 PD-213 MS-200 VC-350 parts location � 4-65 4-65 � 4-65 4-65 4-66 4-67 2 2 2 2 2 2 2 8 pattern � � � � � � � 2 to 7 (shown on page) number of layers layers not shown
4-47
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