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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This was the Sony CCU-500A Service manual I was looking for.
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Text excerpt from page 5 (click to view)
1
2
3
4
2.4 REAR SPEAKER
Model No Label 3(X2) 2
A
B
Back Board 1
4 6
Enclosure Board
Baffle Board
C
Logo
5(X4) Speaker Cloth
REAR SPEAKER Parts List
Mark No.
1 1 2 3 4 5 6
Description
Speaker Cord L Speaker Cord R Hook Bracket Screw Speaker Screw Net Frame
Part No.
312-DV8806-10 312-DV8803-10 427-100017-01 411-BE3512AB1 K77DC55-56D 411-BE4012AB1 R201-RSDV88B-00 D