PENTRON NL-1 Manual Download Page 19 | Manualshive

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Summary of Contents for NL-1

Page 1: ...ze reel up to 7 may be used on these machines and therefore arecording time of 3 hours or more can be had depending upon the tape thickness Models TM l and TM 4 are ldentical except for the sterophonic heads used ln Modtri TM 4 These Models are for operation on a 60 cycle 105 to 120 volts AC supply only Before connecting to your line supply make certain that it agrees with the above speciiications...

Page 2: ... llODEl l l 1 ill0Dtt ll 2 ll0DE ll 3 Page 2 ...

Page 3: ... IIEAD Ilave replaceable andDOUBLE GAPERASE HEAp pole pieces RECORD LEVEL INDICATOR Neon type INPUT JACKS One for microphone or magnetic phono cartridge one for radiq TV and cry stal or ceramic phono cartridge OUTPUT JACKS One for external amplifier or head phone monitoring one for external speaker TUBE COMPLEMENT One each 6J 6SL 6X5 and 6V6 POWER CONSUMPTION 0 watts full load DMENSIONS 14 W x 1 D...

Page 4: ... are moved up or down accordingly The Idler Wheel 94 and Idler Bracket Sub Assembly 95 are attached to the shaft assembly and move up or Page 4 OUTPUT JACKS One for external amplifier or head phone monitoring one for external speaker TUBE COMPLEMENT One each 6J 6SL7 6X5 6V6 l2AU7 two 6AQ5 s POWER CONSUMPTICN 110 watts fuII load DIMENSIONS 1 1 8 W x 17 3f 4 D x 11 H WEIGHT 35 Ibs NL 3S Recorder The...

Page 5: ...moved in the Slide Plate 47 This movement of the Idler Release Lever Assembly allows the Idler Spring 91 to puII the Idler Wheel 94 intocontact with the Motor PuIIey 99 thus driving the Flywheel 6 the Feed Belt 101 and the Feed ReeI Spindle 89 A third effect of the movement of the Wind and Rewind Slide Plate 47 is the application or release of the reel brakes When the Rotary Control is in the neut...

Page 6: ... against the Capstan to drive the tape The Rocker Arm pivots and actuates the Idler Release Lever Assembly 48 Movement of the Slide Plate Assembly 43 also frees the Pressure Arm Lever 44 which in turn is moved by its spring 46 to bring tle Pressure Plate and Pad Assembly 1a to bear against the Head assembly 11 or 12 Page 6 A third effect of movement of the Slide Plate Assembly is to free the Takeu...

Page 7: ...n Model NL 3 When tape is properly threaded it falls between the contacts of this switch Thus when the end of a reel of tape is reached or in the event of tape breakage the contacts wiII close The switch contacts of relay M5 are in series with the motor circuit and are held closed by current through M5 The Shut Off Switch is in parallel with the windings of relay M5 so that when the Shut Off Switc...

Page 8: ...Adjust Volume and Tone controls for desired Iistening quality Dual Track Recording These recorders are designed so that only one half the tape width is recorded at a time thereby re sulting in dual track recording To make a dual track recording proceed as follows 1 After a reel of tap e has been recorded i e all the tape wound onto the take up reel place the Rotary Control in neutral position 2 Re...

Page 9: ...ate results loosen the screw which mounts the spring and move the spring in the proper direction for optimum adjustment Brake Adjustment After equalizerbar adjustments have beenmade the brakes are ready to be adjusted First put a full 5 reel of tape on the feed reel side and an empty 7 reel on the take up side Wind about t 4 of the tape on to the 7 reel While operating the Rotary Control from Rewi...

Page 10: ...at the factory it may require a minor adjustment When this becomes necessary the following ad justment procedure is suggested 1 Allow the recorder to thoroughly warm up usually about 5 minutes 2 Insert a thin screwdriverthrough the AMP jack hole 3 Set the volume control at approximately 2 o clock and makea normal recordingholding the mic rophone 4 to 6r from the mouth Speak into the mic rophone at...

Page 11: ...Figure 7 Bottom View 0f NL l Mechanism 2t Frn P F rsO th 1t z I o og ltt lr ria la z F t i lgD E n C I t f1 n Figure 8 Bottom View 0f NL l With Motor Mtg Plate Removed Page ll ...

Page 12: ...Figure 9 Bottom View 0f NL z NL 3 Mechanism Figure I0 Bottom View 0f NL z NL 3 With Motor Mtg Plate Removed Page 12 ...

Page 13: ... in the re verse order Make sure that the lettering is on the in side of belt thenslip the beltover tre Belt PuIIey 100 by working it up through the clearance in the Motor Support Plate PulI the belt around under the Motor Pulley 99 and work it up between the Motor Pulley and the motor mounting stud towards the Take Up Pulley 98 SIip the belt over the Take Up Pulley The Equalizer Bar and Tie Bar m...

Page 14: ...HEAD ASSEMBLY FOR MODELS Ttvtl NL I NL COUNTER FOR MODELS NL z AND NL 3 A PHOTOFACT EXPLODED VIE Y Howard W Sams Co lnc 1958 Page 14 Figure 1IA Exploded View 0f Parts Above Mechanism Plate ...

Page 15: ...FASCO OR UNIVERSAL MOTOR ALLIANCE OR GENERAL INDUSTRIES MOTOR o Z FFI i 8 Saz z ro c E Ft lr t rtn az F ti L I gtl Tt o t 3 trt n N Page 15 Figure llB Exploded View 0f Parts Below Mechanism Plate ...

Page 16: ... 97 not installed 3 Remove and replace belt as shown on Exploded Properly View 4 Dirty flywheel bearings 4 Clean bearings and flywheel shaft with a clean soft cloth Wow l Foreign matter on idler wheel l Clean with a cloth and alcohol 94 motor pulley 99 flywheel 76 or take up pulfey 98 2 Defective idler wheel 94 2 Replace 3 Defective pressure roller 22 3 Replace 4 Reel spindles 89 and 93 bind 4 Rem...

Page 17: ...ording l Defective erase head or cir l Check circuits replace head if necessary cuits Distorted recording play back function o K l Improper recording level 2 Defective microphone l Check operation of level indicator Check setting of adjustment for level indicator Model NL 1 2 Compare with microphone known to be good Zt 1 lll r irB laz z l o or 9 tE F g la z F t L I g l D o f STEREO PREAMPLIFIER BO...

Page 18: ...6V6GT 6X5GT 65L7GT 6J7 Figu re L2 Rear View 0f NL l Amplifier Page 18 Figure 13 Front View 0f NL l Amplifier ...

Page 19: ...Uf i d 2a Y J ov o OI q 9 J E o a5 Et ta e gc x E 3E E E E E a EspE o o o Lr J E J L E gg a E E as 9 d Qe a L L ie fr EF g ple FE FH a E eEE 3 b i5 lo o L ts I r FE i d E E E FE E E q g L gFEEg E EEE A E E 3 H 5E F GrG tf O ttt 9 z 6 l l e l4l z F tt tt l l d r o ocL N e r f v C I o rG z Lg N t o E L 2 o J lrj z o F z o I F I J1 3 Od N NO rl a o 1e g ol ol c l l rol E e U r o l fi E E E R o SJ d o...

Page 20: ...6V6GT 6X5GT 65L7GT 6J7 Figure 15 Rear View 0f NL Z Amplifier Page 20 Figure 16 Front View 0f NL 2 Amplifier ...

Page 21: ...EEg E o o o J lv iige eE i 6i i r J o e F z O C z O c F t t x6 coE s ff c 5 rra o5 O zo o_o p E o erX E o F o u l E o uJu o Od 6 oa o 5 erf ci 3 E E o 6 c o co o rs 9 t E r s o ct a l O e F O c lrJ t O z O L F U I atl C z o L d llJ c z F tl 6 t E GT o F E o o IH 6 I Alt srl o H n Y N l E o Z o c 3 E I EZ u r O6 trlO o l l4J e ur d urf t H f o F o I CJ t o t I l e t tl t 1 al c5 I 000 l CL F E lrJ ...

Page 22: ...g E EEE E E s e E F Nd sltn C iH RH F3 F o o o 6 d 000 __ 1t c a J tm oooo 000 d XE R U N t 5 o o I o z F o 90 s l rl o de lr1 o g J CJ O a co Ir l I a aq Ji il il t 1r o N 4 N O A c X I or 6 T E L2 r E E 5 x orn IL c N v IE o o c N 000 AJ 6 o lE Eol E Ra I a E 5 o l ooo J EE nE A l l N g 1 h el uuu c N U e co Z o N N v o o e1 F e 1t l J l o l Z o N Nc E R G I o lr bi NE I Hr 6 z ir ql el il nl t ...

Page 23: ...J o z f F la 63 l o 4d J taY llt4 a H gi e 3 Fc afi g tt 6 Fur 4 _co a vl o 2 vt llt c v o I 4 I I o 4 J uJ ur F o z z o J z E F E EE Ei OC E 3 s ci J o o 60 ts trF9C 6e I S o o6F o r z zp az uZ sgEg s six JF d OF d TI xx 1 5 5 NA F I F 5FN IE E EH d ez FiF ai c ESY B oHo o6H ro o rro tr ztrzaaz ss o z tr E i vcMssvd o do d d d o o Eo FE Seiitro So ddd F o z Eg gE ss gd oz gl qE44q 4 F44F F EE i E...

Page 24: ...f oo 3 ir 9 u E 9i c l ir 55 4g o J OL o I trr E x rcE oT 3o Trr d d o l qo oL U t 4 o I 4 J U o c lJ uJ UJ F o z z o 3 z o o E E E 3 6 6t zD z oZ ic iE d Fd s F d Or NN v P 9 r J EJ ri B308 ez Eiv 1 U dY dv d o cd o AzJEz J 6s FiF ze E Ea o z E u 2 fr stro Eo c o o z gd oL SE i63 6 8638 EE i i ri rFFi F sFE Eig cid 606 a 6 oz 5 fY Y Hi9ses 3g EE E fsiii ff 33 3 93839 s3 eE ftcfiseEEEc se 6656 566...

Page 25: ...E lL i Fz lao i Ec z 6E b 5 d oz SE oz f HEq FF44444fr4ee EEE i i rAFiF OOFFE tsi FTFEE K 9 d 9 9Ro6 t s O3 S6 55 ff E 5tr81 JEieid ooEoiioQoEoo Jooo 55ooooEoo E dv2 d 3H eneEEBHt Has f p p p 9 p p p 5 p p id JOOOi rl OOOO6 iOOlb z F HEHFHHeEgHEHH f aa saa d a e Ft 9t oooo 99000000000 9 r r r r o r r oo zzzz Ya zz2zozzoo fiEfiT EHEEfif gfiEgg 76 tsF F NNdN NdNN iSi g9EPsi RX9 6d o66oX o ooo6 66 N6...

Page 26: ...A r o z o s fi r I q6 60 qJ u fH Fdg o bo6 5 E ul iid N 9 rE5 i t io 6 j sEs ffi 5 it T brE g iiAi3 f 5 a2 trF ie Ff 9oo9 I o ir idiirirl i DN iNNNNNN S NOOOO 66n n 66 6 6m 2 z F 4 4 E FE h I gS E SEEEEi E No r6o9 I E u F o z 9 1 i xi z o9 F 74 E UA F z o o I o o i9 rL AL r 6e EI 6 F rP ftz eZ d B 5 E E tn U F o z a o o d E H A o z2 ai L s N F z6 oz E a EL A i1trT 66 ls n U G F A U t ooo o J u L P...

Page 27: ... Model NL 1 Top Trim Plate Model NL 2 Top Trim Plate Model NL 3 A I 76 LD 47 761D 49 76 lD 48 761A 90 Ref No Part No Description 7B 7C 7D I I l0 u UA uB ltc llD 12 r2A 824D 2 L B24D 2 2 6 19 48 7 1 1A 498 532A 40 6L2 60464 711D 62 7 1 1A 708 711D 62 71lD 64 963C 11 964C 56 9648 I32 964C 57 9648 134 963C L2 983A 8 964C 54 Top Cover Casting Gray Top Cover Casting Brown Escutcheon Drive Pin Cover CIi...

Page 28: ...ler Stop Plate 5 40 x 3 16 R H M S Take up Adjusting Lever Assembly 6 32 x 1 4 Socket Hd M S 6 Int Tdoth Lockwasher Tie Bar Assembly Page 28 Description 113 I 3678 15 764A 18 7 14A 530 68 t619A 20 69 I 714A 336 0 l 114 343 7t I 617 8114 72 I 616 7209 3 I 614 8114 75 I 964C 60 5A I881 A 52 6 I 9644 26 11 611 81664 A I 611 81664 7 B I 611 81664 78 614 8114 8A I 614 8114 88 I 614 8114 9 I 615 1124 80...

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