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 8 (click to view)
2-2
2-2
Dismantling of the Front Display Board and Front Control Board
Dismantling of the Rear Portion
1) Remove 1 screw C as indicated to loosen the VCD GND Isolator Board (pos V1109). 2) Remove 1 screw C1 as indicated to loosen the Headphone Board (pos 1101-B). 3) Remove 5 screws D as indicated to loosen the Front Display Board (pos 1101-A). 4) Remove 9 screws E as indicated to loosen the Front Control Board (pos 1107-A). 5) Remove 1 screw F as indicated to loosen the IR-Eye Board (pos 1107-D). 6) Remove 3 screws N as indicated to loosen the VU Meter Board (pos 1107-C).
1) Remove 1 screw J and uncatch M1 as indicated to loosen the AF Board (pos 1102-A). 2) Remove 1 screw R as indicated to loosen the Video Out Cinch Board (pos V1102-B). 3) Remove 3 screws K and uncatch M2 as indicated to loosen the Tuner Board (pos 1103). 4) Remove 2 screws Q as indicated to loosen the Matrix Surround Socket Board (pos V1108) for set with Matrix Surround only. 5) Remove 4 screws L as indicated to loosen the Panel Rear (pos 256). Remove AF Board
Remove VCD GND Isolator Board, Headphone Board and Front Display Board
Remove VU Meter Board
Remove Front Control Board and IR-Eye Board
Repair Hints
Dismantling of the ETF Tape Module
1) The Knob Volume Gloss Black (pos 117) can be remove 1) Remove 6 screws G as indicated to loosen the ETF Tape Module (pos 1104). by inserting a strong string into the slot and pull it out in the direction as indicated. See picture 1. Picture 1
2) The Knob Jog Rotary (pos 140) can be remove by inserting a strong string into the slot and pull it out in the direction as indicated. See picture 2.
