Roberts 1640 free download

File name Roberts_1640-1670_Service_Manua.PDF

SERVICE MANUAL 1B40-1B50-1BBDD-1B70 TAPE RECORDERS ~· _;. ,,~·· IMJ $2.50 IDENTIFICATION CHART MODELS 1640, 1650, 16600, 1670. !KEYED TO ILLUSTRATION AT RIGHT! 1. Suppl y Reel Ho l der 2. Supply Reel 3. l eft Channel Spco~cr (Not in 1660D. Outboard In 1670) 4. Tope G ui d e Roller 5. Automa tic Shut- Off l ever 6. Drive Cop1tan Storage Post 7. I ndex Counter 8. Editing Guide 9. Take - up Reel Ho lder I 0. Toke- up Reel I I. Righ t ((ronnel Speaker (Not in 1660D. Ou tboard in 1670) 1 2. Drive Capstan 13. Pi nch Wheel 14. Pau>e lever 15. Rewi~d / Fasl Forward Control 16 . Stop / Stor l Con1rol 17. l eft Channel Miaophonc Inpu t, 18. Right Channel Microphone I nput 19. l eft Channel Volume Control 20. lef t Channe l VU Meter (Oual Purpose Meter on Madel 1640) 21. Modl!l 1640 : l e ft / Righi VU Me ier Switch Model. 1650 and 1670 : M onilor-Norma i ·Mule Speqkcr Switch Model 1660D: R/ l - NOI'I!IOI · l / R Channel Transfer LlV)---"'~---, Switch {ll) - -- -- l -=-==='-' 22. Right Channel VU Meter (Not i n Mod el 1640 ) 23. Righ t Channel Vol ume Control 24 . Left Channel Play / Record Switch 25. Righ t Channel Ploy/ Record Switch 26. Tone Control 27. Power Switch 28. Record Indicator l igh t 29. Power Cord Connection 30. Stereo Headphone Jock ( 1650 & 1670 J 3 1. Rig h t Hum Ad j ustment 32. l eft Hum Adjustmen t 33. Right Cho M cl Preorn p O utput ( 16 4 0, 1650, 1670 I 34. l C!ft Cho nnel Pr,omp Outpu t ( 1640, 1650, 1670) 35. Right Channel Phono/ Rodi o Input 36. l ei I Channel Phon of Radio Input 37. Ri ghi Channel Speaker Output (I 6 40 . 1650, 1670) 38. Left Channel Sp eaker Output ( 1640, 1650, 1670) 39. Right Cha nnel Twee te r Oulpul ( 1650, 1670) 40. Loll Channel TwDetcr Ou tput (1650, 1670) 4 1. Rig hi Cho nnol High Levol Output II660D only) 4 2. l ei I Cllonnol High Level Output ( 1660D o nly) 43. Ri ghi Channel Low Level Output ( 16600 o nly) 44 . l ell Chonnal l ow l evel Outpu t ( 1660D onl y ) FUNCTIONS OF CONTROLS Power Switch: stop mode, the lifter pushes the tape away from the heads to prevent excessive wear during the fast rewind and fru;t Moving Lhe power switch to the ·'ON" posilion applies forward opera tions. This also mules the ~ound during these power to the motor and amplifier. In the "OFF" position, modes. power is

File name Roberts_1640-50-60-70-1725_Schematic.pdf