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 4 (click to view)
SECTION 2 DIAL POINTER INSTALLATION
Note : Follow the installation procedure in the numerical order given.
Chassis
Pointer Knob (tune)
MIN
PS
5 Screw (+P 2.6x6)
4 Knob (tune)
(Fig-2)
Notch
3 Pointer
Pointer
2
(Fig-1)
1
Tuner board Chassis PVC shaft
1 Turn the PVC shaft fully counterclockwise. 2 Place the pointer in the chassis groove. 3 Line up the tip of the pointer with the notch in the chassis. (Fig-1) 4 Attach so that the knob (Tune) is at the position show in Fig-2. 5 Fasten the knob (tune) to the PVC shaft with the screw.
