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 30 (click to view)
3-14. Video/Audio PC Board
Step Figure Explanation
Remove 6 screws (3 x 8). Screw : type [M-4]
1
[Note] The screw here is also fixing the grand wire.(Green marked)
2
Switch
[Note] The safety interlock switch is pushed when the lamp cover is replaced.
Lamp Cover
Remove video/audio PC board from the terminal bracket.
