TANDBERG TCD 42OA Alignment Instructions Download Page 1 | Manualshive

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Summary of Contents for TCD 42OA

Page 1: ...TANDBERG TCD 42OA CircuitDiagrams with Alignment Instructions n TANDBERG TheEuropean Alternative...

Page 2: ...tput Lcvel controls The words Dolby is registreredtrade marh of Dolby LaboratoriesInc US Nfi stands for NoiseReduction Beforeadjusting fold out page5 Oscillator The oscillator frequencyis between 80 a...

Page 3: ...Set the TCD 420A to Record use Metal tape Adjust the generator to 400 Hz 450 mV on the millivoltmeters Start recording Rewind and play back Output Level controls to maximum The millivoltmeters should...

Page 4: ...outside thetolerance t 3 dB 30 18000Hz adjustR21021R2202 BIASADJ II adjust R2101 R2201 BIASADJ I Then check the frequency responsewith the Then check the frequencyresponse with the Dolby NR circuit O...

Page 5: ...fr e ffirjf iil L l url L l uuLi ffil 4 ffi qffi g g4 oo4qo 3_ 11 fl rr i i 1 trroz ffi i 1ffiH fr ryIu5 mii il g ffi r ffi Y 5ffi T i it i i i H ffi s l l I r or r KF J iliBJ S tr H _ J rc H HSQ 1fl...

Page 6: ...l LcJ ffi I 3 lfacaoe J lrl rF IEFr _l J 1F rou loro e EEts Lil OSCILLATOR c711 l 1h Tl iid 4fit l gT l li g i 11 ffi l l tlry F r i6 T h l l u ll lFlg fffi G r rre3o rPs s el I I I Iel ffi ffi DOLBY...

Page 7: ...e solderside fi cms I il ro m fu a lt lm c6o __ El _g T lRe3 1 l r 033 51 lru I reor ti i i nI Jr I I ll I lll lnur _Jl I I ll I ut I tlt I ll c8o6T______ l I tJtJ 4803r I R822 Oscillator measurement...

Page 8: ...r 5E o N3 Icso T I Icso7 T o501 8C517 B o 503 o50a ac5178 BC5a78 MOTOR SIGNALAMP DOLBY TAPE SELECTORS 63118 SWITCHES SHOWNFROM SOLDERSIDE AND IN UNOPERATED POSITION c 511 OrotI METAL J L...

Page 9: ...I oscrt uron ffin4 tl r IN LMETAL J...

Page 10: ...PECIEFIEO RESISTANCE tN OHMS 2 azooz nzoosANoR2or aRE r METAL FILMREsrsToRs 3 czool o rp 5 PoLYKARBoNAT 4 nzooe rxrcxFILMvARIABLE REsrsroR ooLeYG3o2o L AND R cH IN6r48 I c710 3lt3 i c117 j r r torT T...

Page 11: ...31 _L l 313_l 3r _l_ 1 31 lJ 316r I 3lz_L l 3r9 l l t 3191_ 1 329_ 1_ i 32 _t_ 1 323 1_J 323_l_ l 32 _ _l f tl ljn I L r lr rg19 i i r rBlB Qlr stt 63121 OSCILLATOR ts IRACK 2t3 RIGHT CH L l rr 1806...

Page 12: ...C228 L BC51 B I I I I i I I I I i I I _ i I I I L I I I I I I _____________l oNd A_ d oFF l FM MPX F ECB Att voltoges or meosured with V T VM with inpul impedonce min l0Mohhs Alt DC volloges neosured...

Page 13: ...4c517 METERAME sro2 3l5mAT f _ 230v soxz ltov ooHz NEARi tP i I I l0l I ll 1 t I o 111 4c547 I i c221 2e2 c122 F 2tz l00p I i 8 li ooll tJ I c126 T zpz J LEVEL IND L Tt i 209 IH TJ 6 t c226 lc227l rR...

Page 14: ...t i o 0 s snol voltoses loooHz 1mV Denotes 0C vottogls PLAYBACK AMP PLAYBACK AMP 12V i I MIC LINE AMP R CH 31S Ca05 L1t 2n2 63r51 Mtc L NEI...

Page 15: ...PLAYBACK AMP L F l L f o 63151 MIC LINE PLAYBACK AND OUTPUTAMP SWITCHES SHOWNFROMSOLDER SIDE AND IN UNOPERATED POSITION...

Page 16: ...AI I I I ART STOP tcu r 1727 G 80 PartNo 714136 Printed in Norwayby Reclamo A S GrTandbers A S 1980 TandbergA S PostOffice Box 55 Bogerud N Oslo6 Norway...

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