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A complete and very usefull service manual with all details.
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Text excerpt from page 23 (click to view)
4-9. SCHEMATIC DIAGRAM â MAIN SECTION (4/4) â â¢ Refer to page 39 for IC Block Diagrams.
Note: â¢ All capacitors are in ÂµF unless otherwise noted. pF: ÂµÂµF 50 WV or less are not indicated except for electrolytics and tantalums. â¢ All resistors are in â¦ and 1/4 W or less unless otherwise â¢ â¢ â¢ â¢ â¢ â¢ (Page 30) â¢ specified. % : indicates tolerance. Â¢ : internal component. C : panel designation. U : B+ Line. Power voltage is dc 14.4V and fed with regulated dc power supply from B+ cord and Master unit. (See page 2.) Voltage is dc with respect to ground under no-signal condition. Voltages are taken with a VOM (Input impedance 10 Mâ¦). Voltage variations may be noted due to normal production tolerances. Signal path. F : ANALOG J : DIGITAL