IBM Selectric, Maintenance Manual

Page 1: ...Selectric I O KeyboBrdless Printer Field Engineering Maintenance Manual en CD CD n 1 n c IC CD a III 1 s L CD 1 I CD 1...

Page 2: ...Selectric Vo Keyboardless Printer Field Engineering Maintenance Manual...

Page 3: ...29 4505 0 529 4509 0 529 4517 0 529 4512 0 Copies of this and other IBM publ ications can be obtained through IBM Branch Offices A form has been provided at the back of this pubIication for readers co...

Page 4: ...N o n e This supplement Form 526 3001 0 presents the additional reference data and procedures needed for the modified 5electric I O Keyboordless Printing Unit that serves as a con sole printer for Sy...

Page 5: ...2 56 2 57 2 59 2 59 2 60 2 60 Section 3 Removals Cycle Clutch and Cycle Shaft Removal Belt Replacement Rotate Spring Replacement Lower Ball Socket and Tilt Ring Removal Rotate Tape Repl acement Tilt T...

Page 6: ...ce Olsa Olsa Service Hints Safety Scoping Procedures with Olsa Selectric I O Specifications 4 26 4 26 4 27 4 27 4 28 4 29 4 29 4 30 4 30 4 32 Selectric I O Modes of Operations OscilIoscope Interpretat...

Page 7: ...le of thumb should be All bearing areas having a sliding motion use IBM 23 and all bearing areas having rotational motion use IBM 10 unless other wise specified Machines with power on 24 hours daily r...

Page 8: ...Operational pull links 11 Cycle clutch trip pivots 12 Switch or contact latch pivots 13 Cycle clutch trip bail pivot points 14 Selector latch bai I pivots 15 Pusher bail pivots 6 Pusher bail arm pivot...

Page 9: ...5 Copy control eccentric pivot 20 Shift arm 6 Pulley assembly pivots 7 Right hand cord pulley bea ing 8 Escapement torque bar pivot IBM 23 9 Carrier return unlatching bellcrank pivot 10 Carrier return...

Page 10: ...k support bushing 4 Rotate and tflt pulley bearings 5 Print shaft bearing IBM 23 6 Left hand margin rack bushing 7 Tilt arm pivot A Copy control eccentric surface 8 Idler gear bearings lightly B Guide...

Page 11: ...FIGURE 4 Bock Of The Printer IBM 10 l Index control lever old style 2 Motor bearings All pivots and bearings in operational unit J Motor pulley and clutch assembly 1 5...

Page 12: ...gue bar pivot 9 Latch pusher roller and pivot studs FIGURE 5 Differential Mechanism 1 6 10 Surface of the escapement rack 11 All selector latch and differential mechanism pivots 12 Restore roller pivo...

Page 13: ...urfaces C Operational cam surfaces rollers and drive ratchets D R H bearing and shift clutch inside with grease gun 1 Latch restore roll er pivot 2 Center Bearing 3 C 5 cam follower roller 4 Operation...

Page 14: ...ots 4 Detent pivots 5 Tilt ring pivots 6 Lower ball socket 7 Print cam roller bearing 8 Print shoft wipers 1 7 9 Interposer lever sl i ding surface 10 Detent lever bearings 11 Ti It be Ilcrank pivot I...

Page 15: ...rational cam pivot ratchet Use 23 when parts are removed or repl aced FIGURE 8 Bottom View Showing Contact Location 1 8 Carrier Return Interlock Contact FIGURE 9A Right View Showing Contact Location I...

Page 16: ...ONTACTS CI C2 TAB INTERLOCK CONTACT FIGURE 10 Left View Showing Contoct Location FIGURE 12 Upper Left Rear Corner Showing Contact Location RRIER RETURN NTERLOCK FIGURE 11 Rear View Showing Contact Loc...

Page 17: ...p almost to the bottom of the slot hal f cycle a 5 character Ti It the machine up on its back Raise the nylon wedge manually and tighten the rotate link until there is 1 16 travel left in the nylon we...

Page 18: ...ted by hand with the latch over throw 002 007 old style trip mechanism On the spring loaded new style trip mechanism overthrow with an armature operated should measure 005 020 between the trip lever a...

Page 19: ...ld just fail to get a new tooth on the escape ment rack 13 There should be a clearance of 005 015 between the front of the backspace pawl and a tooth of the back space rack with the carrier at rest 14...

Page 20: ...election Mechanism 5 latch Bail Shaft Adjust the plate that supports the right end of the bail shaft so that the bail shaft is parallel to the cycle shaft 2 1 The bail shaft is set at the factory and...

Page 21: ...ear the latch bail by 005 to 015 when the bail is at the high point of the cycle shaft cams 2 2 latch Bail _ n rI hrr w Stop FIGURE 5 latch Bail Overthrow Stop NOTE Excessive clearance will allow the...

Page 22: ...pusher is against its armature There should be a minimum of 002 clearance Fig 9 between the pusher and the latch extension when the pusher is against its armature To check this adjustment turn machine...

Page 23: ...IGURE 14 Pivot Eccentrics NOTE The high point of the pivot eccentrics must be toward the top paper feed area of the machine the pivot eccentrics are not positioned to the top the print magnet armature...

Page 24: ...ntric Trip Bail t 003 008 Extension FIGURE 17 Knock Off Eccentrics PRINT SELECTION MAGNET ASSEMBLY Late Style NOTE The late style magnet assembly may be identified by the absence of pivot eccentrics I...

Page 25: ...ur mounting screws 009 to 018 clearance between the pusher tai Is ahd armatures pusherTail 009 to 01 FIGURE 17 5 Mounting Bracket 8 Trip Link Late Style The clevis is now attached to the link and the...

Page 26: ...ggish release Insufficient bite may cause extra cycles 3 Trip Link Clevis Fig 18 With either the T2 or R5 armature manually attracted adjust the clevis so that the latch lever clears the trip lever lu...

Page 27: ...URE 22 Inhibitor b Position the inhibitor pawl mounting bracket front to rear for 030 to 035 between the front side of the cycle clutch latch and the inhibitor pawl Fig 23 CAUTION The R5 latch link ad...

Page 28: ...aced CAUTION Any change in the position of the back up roller directly affects the typeheod homing and the shift Retaining Plate FIGURE 28 Shift Clutch Spring Retaining Plate cause fai lure of the cam...

Page 29: ...t clutch ratchet has 010 to 030 rotary motion between the shift cam stop and the shift release arm with the mech anism at rest Fig 30 The adjustment insures that the shift cam will not be al lowed to...

Page 30: ...ustments are attempted 1 Hinge Plates Fig 34 Position the hinge plates with the armatures manually attracted to obtain 001 to 003 clearance between the armatures and hinge plates This clearance insure...

Page 31: ...mature at rest by 010 Fig 36 This clearance insures unlatching of the upper case armature Armature Energized FIGURE 36 LC Magnet Assembly Front to Rear 2 9 b Up or Down UC armature energized clears th...

Page 32: ...the check ratchet The shims are available in various thicknesses and are coded by shape as described in the Parts Catalog CAUTION The slight end play of the shaft insures that it will rotate freely E...

Page 33: ...light im pression A lack of clearance between the right end of the spring clutch and the face of the cycle clutch Sleeve Collar Adjustment Pulley Cycle Clutch Spring Sleeve End Play FIGURE 42 Lateral...

Page 34: ...the spring clutch wi II be expanded when the cycle clutch sleeve is latched and the cycle shaft is in its rest position Adjust the collar so that when a zero tilt negative five rotate character is ha...

Page 35: ...acture at approximately 25 Fig 46 This adjustment is not crit ical When the relationship f the filter shaft gear has been changed set the filter shaft for proper escapement cam timing Be sure and chec...

Page 36: ...tilt ring should be removed by the pivot pins while still allowing the ti It ring tv pivot freely If the ti It ring is not properly centered the rotate posi tion of the head can vary slightly as the h...

Page 37: ...t because H will retard or restrict the seating of the tilt detent which in turn will retard or restrict the seating of the rotate detent 6 Rotate Detent Adjust the front and rear guides so that the r...

Page 38: ...ed and detent cam left or right on the print sleeve so that the insi de rib of the cam wi II be in line with the left hand edge of the ribbon feed cam follower Fig 55 Ribbon Feed and Detent Cam These...

Page 39: ...adjust the ribbon feed and detent cam left or right on the print sleeve Fig 57 so that the rotate detent wi II clear the detent teeth on the typehead skirt by 025 to 035 Fig 58 Feed Cam Follower FIGUR...

Page 40: ...tal will cause them to restore toward their original position NOTE It is very important for each selector latch to receive the same amount of motion from the latch bail when operated in order to produ...

Page 41: ...er than the hairpin spring thus holding the tilt arm against the right hand end of the elongated mounting hole in the link Although this modification has no definite effect on a tilt operation its fun...

Page 42: ...cessary for rapi d lower case negative rotate operations It will also affect the wear compensator op eration if the tension is not sufficient to overcome the compensator damper spring in the negative...

Page 43: ...nt of the zero and all posi tive rotate selections to change equally with respect to the negative selections No change is felt in the coarse alignment of the negative rotate selections when the negati...

Page 44: ...cycle the machine using an upper case zero rotate latched home char acter Loosen the set screw in the bottom of the rotate pulley and slip the typehead so that the detent will enter 010 to 020 from t...

Page 45: ...rotate position is caused by the positive side of the balance lever It produces a deficiency of motion in the negative selections just as it did during the positive selections Notice the detenting of...

Page 46: ...and neg ative motion If the rotate arm motion was excessive the detenting pat tern would remain the same except that each detent would be on the opposite side of its detent notch NOTE The adjustment...

Page 47: ...as reached its full negative position Assuming that no ratio change was felt in the system at the time of making the eccentric stud adjustment stop ping the rotate arm early to relax the pressure on t...

Page 48: ...it travels from the negative five position towards the negative three position In other words the more clearance there is between the rotate arm and the paddle the farther the compensating arm can tra...

Page 49: ...the high side of the tol erance c Band width make sure that it is not excessive 2 26 d Head play it should be 045 measured at the typehead skirt If excessive head play is suspected the ball joint sho...

Page 50: ...r damper spring tension cou Id be the cause g Improper ti It adjustments can cause poor horizontal alignment by delaying the detent seating NOTE After the machine has been in use for some time wear in...

Page 51: ...side and directly in line with the rotate two latch when checking the left side The handle of the Hooverometer must be as nearly vertical as possible during the checks The base of the handle does not...

Page 52: ...forward and tighten it in place Adjust the plate so that about 1 32 of the adjusting slot is visible a bove the binding screw and tighten the screw friction tight These settings provi de a good start...

Page 53: ...e platen on Iy the rest position beginning of powered travel may change wheA the amount of powered trave I is changed There fore in order to maintain a fixed amount of free flight to the typehead when...

Page 54: ...h _point forward to satisfy the condition NOTE If the roller is too close to the restoring cam it may bind against the cam during print shaft rotation If too much clearance exists the type head may no...

Page 55: ...until the print cam follower is resting on the high point of the print cam At this point there should be 035 of free flight between the platen and the center of a half cycled home character Adjust th...

Page 56: ...r and the escapement pawl lug CAUTION Make certain that the escapement trigger does not prevent the escapement torque bar from resting against the stop when making the torque bar stop adjustment Also...

Page 57: ...nted characters Retarded timing will cause the cam follower to rest part of the way up the incline of the cam This could restrict the escapement trigger from the resetting over the torque bar lug as t...

Page 58: ...IGURE 108 Gear Mesh and Operational Shaft Adjustment The position is controlled by a collar set screwed to the shaft and the shift clutch ratchet Be sure to maintain 002 to 004 end play in the operati...

Page 59: ...5 FIGURE 110C Cord Tension CAUTION The mainspring should be handled carefully to prevent it from sl ipping when the tension is being in creased or decreased The outside loop of the main spring must no...

Page 60: ...sted so thot the latches will pass under the cam fol lower lever with a clearance of 003 to 015 Fig 1146 The carrier retum operational latch adjustable stop should be adjusted so that the latch wi II...

Page 61: ...at the rear With the machine on its back the latches can be pushed against the cam followers to estimate the clear ance CAUTION If the cam followers are operated too far when this adjustment is being...

Page 62: ...imit of its travel before the cam is released NOTE The clearance may be judged with the use of the push end of the large spring hook The end of the spring hook is approximately 035 thick 8 Interposer...

Page 63: ...their corresponding interposers Fig 125 b Front to Rear so that the armature link holes are slightly to the rear of the interposer link holes Fig 126 Having the trip link offset insures unlatching of...

Page 64: ...rest clear their yokes by 020 to 025 Armature Backstop Armature fiGURE 128 2 Armature Backstop 3 Magnet Unit Position Position as follows a Left to Right so that the armatures are directly beneath the...

Page 65: ...e interposer switch mounting bracket front to rear so that the tripped interposer will transfer the switch con tacts then move the bracket an addi tiona I 015 to 025 Fig 130 fnterposer Un latched LnI...

Page 66: ...4 Contact Installed CAUTION If the contact assembly is mounted too far forward the backspace latch may operate the contact which can cause up to 30 difference in timing This problem can only be seen b...

Page 67: ...e set over the lug on the escapement torque bar at the com pletion of each spacebar operation It also insures that there will be a maximum transfer of motion from the spacebar operational latch to the...

Page 68: ...mediate lever is supplied with the same amount of motion from the hexagaon head ed screw on the bellcrank regardless of any change in the front to rear position of the intermediate lever Therefore the...

Page 69: ...e a flat surface machined on the left end of its pivot pin These early production latch actuat ing arms should be replaced before attempting to make the carrier return adjustments The flat sur face ma...

Page 70: ...ustment for the margin rack eccentric is covered under the Margin Control section FIGURE 146 Overbank Adjustment NOTE Any change in overbank on machines equipped with this early style margin rock asse...

Page 71: ...ld be adjusted for 001 to 007 end play of the latch actuating arm Fig 147 1 prior to making the pawl clearance adjustment The adjustment ensures that the escapement pawl will not drag along the rack d...

Page 72: ...should clear the carrier return cl utch spring by 015 to 020 when the machine is at rest Fig 147 6 Adjust the screw on the clutch arm to ob tain proper clearance FIGURE 147 6 Carrier Return Shoe Clea...

Page 73: ...ier is re leased The adjustment is made by adjusting the eccentric stud in the torque limiter hub If sufficient adjustment is not available at the eccentric the torque limiter spring may be shifted on...

Page 74: ...the clutch at the left margin The adjustment may be check ed by holding against the carrier with the push end of a spring scale and allowing the carrier to slowly unlatch the clutch The adjustment is...

Page 75: ...stments 11 and 12 ensure that the air cyl inder mechanism will not bind or choke off carrier move ment at the left margin Fig 150 8 FIGURE 150 8 Air Cylinder Mounting Bracket 13 Air Cylinder Orifice T...

Page 76: ...the platen ratchet with a spring hook while an index operation is manually cycled At the completion of the operation allow the detent roller to re enter the platen ratchet If the index link is proper...

Page 77: ...l not flip past the rest position when released from either a set or clear position The tab rack must return fully to the rest position when the keybutton is 2 47 released slowly The brake is located...

Page 78: ...escapement pawl Fig 100 Check the pawl mounting stud for 001 clearance between it and the escapement torque bar Fig 102 This adjustment should be checked at the left and right sides of the printer On...

Page 79: ...btain 016 023 clearance between this lug and the tab torque bar with JlII parts at rest FIGURE 167 Tab Trigger Extension 10 II 2 49 Tab Lever Overthrow Fig 168 With the tab cam on its high point adjus...

Page 80: ...ximately 035 thick 3 Tab Rack Adjust the tab rack left or right for a clear ance of 005 to 020 between the tip of the tab lever pawl and a set tab stop with the tab lever latched out This adjustment i...

Page 81: ...t form the intermediate lever tab so that the tab lever pawl overthrows the tab latch by 005 to 010 Not Present On Machines With New Style Interlock Contact t 005 to 010 Tab Lever Pawl Overthrow FIGUR...

Page 82: ...ch should clear the end of the tab lever pawl by 005 to 025 The rear lug of the tab latch should be formed forward or back to obtain this condition The lug on the tab latch may be formed by using the...

Page 83: ...ches its high point Torque bar bounce must not retransfer the contact whi Ie the tab lever is latched out MARGIN CONTROL MECHANISM 1 Margin Rack Overbank Guide With the carrier resting at the left han...

Page 84: ...lever located on the left end of the bellringer bail to have 005 1 to 020 clearance with the bell clapper bell crank lever when the bai I is at rest against the bail stop Fig 180 The bai I stop is loc...

Page 85: ...be Ilcrank lever Form Here Bell Clapper Be I crank Lever FIGURE 182B Bell Clapper Bellcrank Lever 8 Line Lock Bracket Adjustable Plate Fig 183 Position with the carrier in the next to last space to a...

Page 86: ...020 clearance between the switch wire and the actuator arm with the switch at its re transfer point 2 The actuator arm shall be adjusted to give 120 to 150 left to right clearance between the actuator...

Page 87: ...chanism With the feed roll tension springs disconnected the vertical supports for the carriage tie rod and the feed roll actuating shaft should be adjusted to just touch the bottom of each shaft Fig 1...

Page 88: ...nt Feed Rail Arm FIGURE 189 Feed Roll Adjusting Eccentrics Old Style b Late The front feed roll adjusting arms should be adjusted as follows When two tab cards are placed between the front feed rolls...

Page 89: ...laten b The vertica I adjustment shou Id be such that the graduated edge is parallel to and 002 to 005 below the feet of the typed characters when viewed from the operator s position c Adjust the card...

Page 90: ...is made Adi ust Plate Up Or Down FIGURE 195 Ribbon Lift Guide Plate Adjustment 6 Ribbon Lift Control Link Adjust the link forward or back by means of the clevis so that the underscore will strike the...

Page 91: ...sition form the pivot arm extension up or down so that the latch does not drag when moved from the latched to the unlatched position NOTE Position the pivot arm bracket so that the high est and lowest...

Page 92: ...be tween two small beads Fig 208 Connect an ohmmeter across the N O contacts and slowly rotate the platen knob until a large chain bead operates the switch roller lever The N O contact must make befor...

Page 93: ...rest a 005 minimum clearance shall be provided between switch actuator and actuator cam Fig 211 FIGURE 211 End of Forms ContaCt c The actuator cam shall not touch front cover with roller arm at rest C...

Page 94: ...ver and sliding it off the cycle shaft 15 Force the positive bail down with a screwdriver 2 Figure 5 making sure all the latches are under the bail Insert a bristol wrench through the lower left beari...

Page 95: ...front with a rubber band FIGURE 5 Cycle Clutch and Cycle Shaft Removal FIGURE 6 Belt Replacement 7 Remove the cycle clutch check pawl and spring HI Figure 8 8 Remove the front screw from the C I and C...

Page 96: ...he cycle shaft to the cycle clutch latch Figure 11 Work it between the latch and the cycle clutch sleeve 14 Loosen the motor mount and slip the belt over the cen trifugal cI utch FIGURE 9 Belt Replace...

Page 97: ...lley notch If not one should be added on re assembly 8 The following ad justme nts should be checked after the rotate spring is replaced a Rotate spring tension b Typehead homing c Damper spring Not p...

Page 98: ...ure 17 6 Insert the rotate tape eyelet first 2 Figure 17 be 3 5 FIGURE 17 Rotate Tape Replacement FIGURE 18 Rotate Tape Replacement tween the rotate pulley and the right side of the yoke from beneath...

Page 99: ...e the rotate tape tension tilt the head to the front and restore the detent 8 Remove the tape retaining pin from the carrier and insert the ti It tape keeping it on top of the rotate tape 9 Restore th...

Page 100: ...c Rotate differential guides FI GURE 24 Ti It Selection Di fferential Removal FIGURE 25 Tilt Selection Differential Removal DIFFERENTIAL PLATE REMOVAL 1 Position the carrier to the extreme right 2 Re...

Page 101: ...e Tilt detenting f Typehead homing Not present on all printers FIGURE 28 Differential Plate Removal FI GURE 29 Differential Plate Removal FIGURE 30 Differential Plate Removal SELECTOR BAIL REMOVAL 1 R...

Page 102: ...LATCH PUSHER REMOVAL 1 Remove the two screws 1 Figure 35 that hold the con tact plate to the frame Remove the contact assembl y holding it to the front with a rubber band 2 Disconnect the pusher sprin...

Page 103: ...ck c Intermediate lever 3 10 FIGURE 38 Backspace Rack Removal SHIFT ARM REMOVAL Position the carrier to the left and remove the right dust cover 2 Remove the shift contact assembly Figure 39 3 Remove...

Page 104: ...t rear mounting leg 1 Figure 42 2 Remove the two mounting screws 2 Figure 42 and re move the contact assembly 3 11 FIGURE 42 Operational Contact Removal OPERATIONAL MAGNET ASSEMBLY REMOVAL 1 Perform t...

Page 105: ...pring S Figure 46 11 Remove the index selection link 6 Figure 46 FIGURE 4S Operational Latch Bracket Removal FIGURE 46 Operational Latch Bracket Removal 12 Remove the carrier return eccentri c by remo...

Page 106: ...Work the operational shaft to the right until it clears the cycle clutch pulley hub then lift shaft out the top 5 The following adjustment should be checked after the operational shaft is replaced a A...

Page 107: ...i gure 53 8 Remove tape wiper 8 Figure 53 if present 9 Remove escapement bracket mounting screws 10 Fi g ure 53 10 Re move transport spring bracket screw 1 Figure 54 Early printers only 11 Remove prin...

Page 108: ...e Clutch and Cycle Shaft removal 2 Remove be It from pu II ey 3 Remove two set screws from pulley One on top of the other used as a lock screw 4 Remove cycle clutch hub from pulley 5 Perform section 9...

Page 109: ...erposer Lug and the Release Lever Lug The Keylever Pawl clears the interposer by 020 025 Too Far Intermediate Lever I 5 Bellcrank Stud 1 4 Escapement Bracket 1 7 Binds 1 6 Latch 1 3 Worn Pawl SH 1 12...

Page 110: ...I in the area where each interposer contacts the re 1 11 1 12 4 2 store bail when being restored This clip will pro vide approximately 015 1 more interposer restoring motion The clip is PN 1110093 an...

Page 111: ...bai I to limit any movement The pawl mounting stud should clear the Escapement Torque Bar by 001 at the closest point The Torque Bar shou Id c lear the Re lease Lug by 002 010 Later models use hig si...

Page 112: ...eater spring tension and more re liable tripping of the operational cams When fail ures in the operational area are encountered and it is suspected that these springs are fai ling to properly trip the...

Page 113: ...i nti ng arid after the Typehead has moved away from the Platen by 1 4 1 2 Binds 3 8 Ves No Escape Pawl Worn Fig 3 1 Escape Rack SH 3 11 Trigger Adjustment 3 4 Crowding Main Spring 3 7 Main Spring Ten...

Page 114: ...ectly interchangeable with the old 75 mainspring The new 100 mainspring may easily be identified by the 100 stamped on the rear of the mainspring cage This new spring wi II add greater torque to the c...

Page 115: ...i c stud 4 S 4 9 4 7 No Yes Yes Yes Armoture to Releose Lug Clearonce 4 4 Shift Arbor Loose or Worn 4 1 Spring CIutc h Broken Com Binds 4 8 Ratchet Binds or C Clip Missing 4 7 S H SHIFT LOCK UP IN UPP...

Page 116: ...ront or rear allowing the rotate tape to ride the pu lIey flange Insure that shift arm pu lIey maintains at least 1 16 clearance to the ti It pu Iley bracket S H SHI FT STOP SCREW SPACER A spacer PN 1...

Page 117: ...the Tab Latch by 005 010 Binds Check the following 4 9 5 8 Ves Pawl Clearance 5 5 Binds 5 7 Tab lever Pawl loose Adjust 5 4 Reset Tab Stop Worn Pawl Fig 3 1 Rebound 5 8 a Feed Roll Mounting Arm hits...

Page 118: ...rd Holders c Anvi I and Front Carrier Shoes d Rear Carrier Shoe e Escapement Cord is off its pulley f Pinion Gear 6 6 6 7 6 8 6 9 4 10 Yes No No Carrier Return Latch To Keepe Clearance 6 1 Carrier Ret...

Page 119: ...ing Off Index Pawl 7 5 A new R H platen bushing has been released to the 4 11 Yes Not Enough Link Adj 7 2 Cam Follower Broken 7 3 Binds in Platen 7 4 Heavy Forms or Form Feed Devices 7 5 Assembly Line...

Page 120: ...The cam wheel mounting stud has been extended so as to provide greater release lever bite on the cam wheel The improved bite will eliminate extra cycles of the Operational cams caused by the release...

Page 121: ...OPERATIONAL SHAFT REMOVAL 1 Remove shift clutch ratchet and clutch spring Do not disturb the clutch arbor 2 Loosen set screws in Torque limiter hub tab governor hub tab governor collar operati ona I c...

Page 122: ...MAL SELECTION No Yes Rotate Check Rotate Tension 10 6 Damper Spring 10 9 Detent Spring 10 5 Print Shaft Timing 10 8 Match a 4 Character to Any Positive Rotate Char acter Yes Trouble is in Selection Ar...

Page 123: ...errated it may be reversed b Rotate arm eccentric adj ustment 10 7 10 11 Selection System Check See Section 13 0 10 12 Print Magnets See Section 14 0 10 13 Form the paddIe so that home detenti ng matc...

Page 124: ...nters without shift Homing may be accomp lished easi Iy by adjusting the shift arm screw since these units do not uti Iize shift operation 10 22 ANALYZING PRINT FAILURES Some cases of Mal Selection re...

Page 125: ...ing condition is being actively investigated by Engi 4 17 neeri ng and any more improvements or refi ne ments of adjustments will be released to the Field as soon as they are avai lab Ie EXTRA CYCLES...

Page 126: ...S The selection latches should hang vertically with maximum overlap on the bai I plate The links shou Id 4 18 have only 001 002 lost motion in them and must not restri ct the overhang af the latches M...

Page 127: ...lay No No Magnet Coil Bad Armature Binding Knock Off 14 3 Failure 10Cycie No Yes Yes EXTRA Cycles See 11 0 14 8 14 3 14 2 Yes Magnet Assembly Adj 14 4 Latch Lever Bile 14 9 Cycle CI Adj Latch Lever M...

Page 128: ...t in the center portion The adjustment of the cycle clutch trip bail is made by depressing the extreme right and left hand arma tures and observing a clearance of 003 to OOS between the cycle trip bai...

Page 129: ...1 5 Remove the spri ng hook and check for the proper clearance of 020 to 025 between the latch pawl and the keeper on the cam iobe providing the sma lIer clearance NOTE Insure that the keeper is adjus...

Page 130: ...g screws and clips 5 Adjust the overthrow of the cycle shaft for 007 to 015 3 to 5 of rotary motion This ad justment must be checked on both lobes of the cam since the cam is now sp lit and each lobe...

Page 131: ...on as well as noisy idling c The cycle clutch collar should be adjusted left or right to allow a minimum of 008 end play of the clutch sleeve Too little play of the sleeve can resu It in erroneous rea...

Page 132: ...the carrier is at the extreme left hand 16 4 SPRING LOADED TILT ARM All current production Selectric I O Printers will have a spring loaded left hand ti It arm This feat ure prevents accidental diseng...

Page 133: ...ing Section 15 0 f Character interrupter adjustment Old Style See Ref Man New Style See 17 2 g The Linelock Interposer binds in the Selector Compensator clean and lubricate KEYBOARD LOCKUP Keyboard lo...

Page 134: ...b Iy must be removed as a safety hazard is present if the emery cloth contacts the moving pawls and springs Lubricate the new sintered iron pulley with IBM 10 oil during initial assembly and thereafte...

Page 135: ...be ordered under PN 1164342 The contact shie Ids may be insta lied under the present contact mounti ng screws These shields should be used whenever a service call or machine malfunction arises due to...

Page 136: ...h Spring and Arbor c Driven pulley hub and bearing d 0peratfontrl EtirrrB earmgs e Operational Shaft and Shift Cam Bearings f Shift Clutch Spring and Arbor These items should be lubricated every 8 wee...

Page 137: ...ions the fai lure occurred 2 What general areas might have caused the fail ure 3 What symptoms the fai lure caused Then you shou Id be ab Ie to use 0 lSA to 1 Duplicate the conditions that brought on...

Page 138: ...table up level of a normal contact signal See Figure 19 4 30 Bounce may be caused by insufficient tension on the contact support straps or by loose pi Ie up screws in the contact assemb Iy Dirty conta...

Page 139: ...60 100 35 800 130 46 540 160 57 280 11 3 938 41 14 678 71 25 418 101 36 158 131 46 898 161 57 638 12 4 296 42 15 036 72 25 776 102 36 516 132 47 256 162 57 996 13 4 654 43 15 394 73 26 134 103 36 874...

Page 140: ...en at the rate of 15 5 characters per second or a character every 64 5 ms This 3 mi IIisecond differ ence is the safety factor allowed in the event of a slow printer cyc Ie 30 0 OSCILLOSCOPE INTERPRET...

Page 141: ...s 6 3 ms Use C 6 if avai lable on your printer SPACE BACKSPACE TAB I I II lI I I I III Figure 30 4 4 33 Scope Time Base Vert Amp Sync Across resistor in Series with Mag Coi I 5 ms cm 1 volt em Int Tim...

Page 142: ...recorded LOWER CASE MAGNET I I I I 1 iI I Figure 30 7 Scope Time Base Across Resistor in Series with Magnet Coil 10 ms cm Vert Amp 2 volts cm Sync Int Time from start of pick to feedback Magnet seal t...

Page 143: ...s is within Machine Specifications 14 ms maximum 30 2 Refer to Figure 30 5 Magnet Seal Time C5 N C opens at 55 converted to ms Total 6 5 ms 19 7 ms 26 2 ms 26 2 ms is total of everything but mechanica...

Page 144: ...n Print Selection Magnet Assembly TAB B S I I I I DU I I I I I I I I I I I I I I I I I 000 000 000 I I c 0 00 000 000 000 000 I 000 000 000 000 D 000 110 I I I I I I I I I 000 000 000 Operational Term...

Page 145: ...e machine and the last step with the assembly installed Be sure the residual is firmly in place against the upper yoke NOTE Steps 1 4 are for setting up the magnet assembly step 5 determines its mount...

Page 146: ...the operational magnet mounting bracket for 020 030 clearance to the lug on the cam clutch release arm 5 2 C5 6 Contact and Timing 1052 7 only There are four adjustments of the 1052 7 space CR feedbac...

Page 147: ...so the cam follower stud wi II be 002 to 010 from the com with the shift ratchet latched home Figure 5 5 Be sure the follower stud is centered vertically on the camming surface b Adjust the N O contac...

Page 148: ...asure the motion after switch transfer 5 4 Removals When removrng components from the reduced function prrntlng unit review the removal procedure to see if removal would be easier with the cycle clutc...

Page 149: ...6 2 59 2 42 2 37 2 39 2 38 2 35 2 36 2 4 LAST COLUMN CONTACT LATCH BAIL SHAFT MOUNTING PLATE LATCH BAIL STOP LATCH PUSHER ASSEMBLY LINE GAGE CARD HOLDER LINE LOCK BRACKET LINE LOCK BRACKET ADJ PLATE L...

Page 150: ...R MECHANISM STENC Il l OCKOUT 2 56 2 57 2 57 2 57 2 56 2 58 2 57 2 57 2 14 2 22 2 21 2 14 2 24 2 20 2 13 2 19 2 2 2 7 2 8 2 7 2 7 2 10 2 8 2 8 2 7 2 26 2 41 2 41 2 57 TAB ACTUATING l INK TAB GOVERNOR...

Page 151: ...J Organized for convenient use CJ c J Complete c J c J well illustrated c J c J Written for your technical level c J c J What is your occupation ___________________________ How do you use this publica...

Page 152: ...POSTAGE NECESSARY IF MAILED IN THE UNITED STATES POSTAGE WILL BE PAID BY IBM Corporation P O Box 9592 Raleigh N C 27603 Attention Product Publications Dept 860 Fold FIRST CLASS PERMIT NO 155 RALEIGH...

Page 153: ...Cd I I I I I I I X I _____________ ______________ J 225 32D7 2 International Business Machines Corporation Field Engineering Division 112 East Post Road I White Plains IN Y ID8Dl Ul ED ED n n c 12 t a...