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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Text excerpt from page 1 (click to view)
SERVICE MANUAL
CD CHANGER SYSTEM
6 2003 49849
CH-PK842R
KS-FX842R CD changer control receiver
Area Suffix E ------ Continental Europe
CH-X550 CD changer
This model is combination of the CH-X550,CD Changer and the KS-FX842R. CD changer control receiver in one packing. Please refer to the service manual of CH-X550_E(No.49787)and KS-FX842R_E.EX(No.49854) for items other than this packing.