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.
Text excerpt from page 3 (click to view)
EXPLODED VIEW/PARTS LIST
Main section
NO. 1 PART NO. DESCRIPTION
Note)Some parts depend on each model.The model name is specified in the descripion . (CY448;PN2165MN, CY458;PN2165MP, CY468;PN2165MQ)
Q'TY 1 NO. 22 23 24 25 26 27 28 29 30 1 4 1 33 1 6 1 2 5 1 13 1 1 1 34 35 36 37 38 39 40 41 42 43 31 *32 PART NO. DESCRIPTION Q'TY 1 1 1 1 1 1 1 11 6 1 1