Siemens Microfloppy FDD100-5 Operating And Maintenance Manual Download Page 62 | Manualshive

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Summary of Contents for Microfloppy FDD100-5

Page 1: ...SIEMENS Floppy Disk Drive FDD100 5 ...

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Page 3: ...MODEL FDD100 5 IVIICROFLOPPy TM FLEXIBLE DISK DRIVE OPERATION AND MAINTENANCE IVIANUAL A22742 A1005 X001 7630 ...

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Page 5: ...MODEL FDD1 00 5 FLEXIBLE DISK DRIVE OPERATION AI ID MAII ITENANCE A22742 A 1005 X001 7630 REVISION LEVEL Revision Letter Description Date A Original Publication 3 79 iii ...

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Page 7: ...Model FDD100 5 Flexible Disk Drive ...

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Page 9: ...istics 2 6 2 3 4 Receiver Characteristics 2 6 2 3 5 Terminator 2 7 2 4 INTERFACE SIGNALS 2 7 2 4 1 Input Control Lines 2 7 2 4 2 Output Lines 2 10 2 4 3 Data Lines 2 11 2 5 PROGRAM SHUNT MODULE 2 12 2 5 1 HS Head Select Option 2 14 2 5 2 HM Head Motor Option 2 14 2 5 3 Single Drive Conflguration 2 14 2 5 4 Multiple Drive Configuration 2 14 2 6 OPTIONS 2 14 3 OPERATION PROCEDURES 3 1 GENERAL 3 1 3 ...

Page 10: ...5 1 Mean Time Between Failures MTBFl 5 1 Mean Time To Repair MTTR 5 1 Service Life 5 1 DIAGNOSTIC TECHN IQUES 5 1 ERROR RATES 5 2 Write Error Rate 5 2 Read Error Rate 5 2 Seek Error Rate 5 2 ERROR DETECTION AND CORRECTION 5 2 Write Errors 5 3 Read Errors 5 3 ALIGNMENT DISKETTE 5 3 REMOVAL AND REINSTALLATION PROCEDURES 5 4 Front Bezel 5 4 Drive Motor Assembly 5 5 Stepper Motor and Lead Screw 5 5 He...

Page 11: ...stment 5 13 5 8 4 Track 0 Switch Adjustment 5 14 5 8 5 Track 00 39 Stop Adjustment 5 15 5 8 6 Index Sector Timing Adjustment 5 16 5 8 7 Radial Alignment of Head 5 17 5 8 8 Head Load Bail Adjustment 5 17 5 8 9 Head Load Solenoid Adjustment 5 19 Appendix A SPARE PARTS LIST A 1 Appendix B ASSEMBLY DRAWINGS AI ID MATERIAL LISTS B 1 Appendix C LOGIC SCHEMATICS C 1 Appendix D ILLUSTRATED PARTS BREAKDOWN...

Page 12: ...ing 2 13 2 12 Program Shunt Module 2 13 3 1 Write Protect Feature 3 2 4 1 Model FDD100 5 Disk Drive Block Diagram 4 2 4 2 Hard Sectored Format for Single Density 4 6 4 3 Soft Sectored Format 4 7 5 1 5 2 5 3 5 4 5 5 5 6 Test Point Locations 5 12 Track 00 39 Stop and Head Load Pad Adjustment 5 14 Track 00 Switch Adjustment 5 15 Index Sector Timing Adjustment 5 16 Head Load Bail Adjustment 5 18 Head ...

Page 13: ...e density single head controller for use with the Model FDD100 5 Disk Drive or its equivalent Model FDC200 5 is a double density dual head controller for use with the Model FDD200 5 Disk Drive or its equivalent 1 2 INTRODUCTION The Model FDD100 5 Disk Drive is a high speed random access device which stores data on and retrieves data from an oxide coated single sided mylar diskette that is 5 125 in...

Page 14: ...ile protect sensors permits data storage on both sides of a dual sided diskette This option coupled with double density encoding techniques and ex tended track capability makes it possible to store up to 500K bytes of data on a single diskette 1 2 2 DAISY CHAIN CAPABILITY Up to four Model FDD100 5 Disk Drives can be daisy chained on a single bus When all expanded capacity features of the disk driv...

Page 15: ...r than one in 109 bits C Low Cost competitive with cassette drives D Compatible Media industry standard media and format ensures interchangeability E Gentle Media Handling field proven patented positive operator interlock extends media life and does not allow clutch to engage diskette unless package is correctly positioned in disk drive F Ceramic Ferrite Heads high reliability and long life G Dais...

Page 16: ...ner track 5162 fci inner track 50 msec 1 sec PHYSICAL 40 Tracks 48 TPI 300 3 rpm 125K bits sec 25 msec 340 msec 15 msec 100 msec 2768 BPI inner track 5536 fci inner track 50 msec 1 sec Parameter Height Width Length Net Weight Shipping Weight Media Requirements Type 820 or equivalent Type 821 or equivalent Type 822 or equivalent Power Typical Power Dissipation Characteristics 3 25 0 02 inches in 8 ...

Page 17: ...istics Mean Time Between Failure MTB F 8500 hours assume 25 power on cycle for spindle drive motor Mean Time To Repair MTTR 0 5 hour Media Life with approved media Not less than 3 x 106 passes per track Design Life 5 years Table 1 2 Unformatted Data Capacity Specifications Single Density FM Double Density IVlFM M2FM Capacity Single Side Double Side Single Side Double Side Track 3 13K bytes 3 13K b...

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Page 19: ... mounted in one of the following positions A Horizontally with PWB facing up as shown in Figure 2 1 B Vertically on either the right or left side with the door opening to one side or the other side C Vertically with the door opening upward D Any combination of A B and or C Figure 2 2 shows outline and mounting dimensions 2 3 INTERFACE Communication between the Model FDD 100 5 Disk Drive and the co...

Page 20: ...2 2 9 Z f ZL U L U l J 000 iii I X Q allllllll QJ U QJ E o Vl QJ o o LO 6 o o o u jj g N QJ l Cl U ...

Page 21: ...1 125 IN 318 CM 6 32 x 31 IN 7874 CM DEEP MTG HOLES 2 PLCS EACH SIDE I P 187 IN 1 _ 3 125 IN I r 7 94 CM 14 74 CM 8 0 IN MAX I I 20 32 CM 1 87 IN SERVO 14 74 CM 3125 IN CONTROL I 14 6 94 crvl 1 PWB t o LP __L I J LP I I i I el I U 1 r o 1 1 DOOR 6 32 x 31 IN OPEN 1 14 1 0 IN MAX 7874 CM POSITION r h 2 54 C 4 MTG HOLES DOOR T CLOSED POS OI 8 59 CM I j I I I 06 IN TypJ 1 15 CM 28 IN 71 CM w Figure 2...

Page 22: ...shown in Figure 2 3 I O CONTROLLER 0 CD 0 CD FDD FDD FDD FDD STAR NOTE TERMINATION NETWORK TERMINATE LAST DISK DRIVE IN DAISY CHAIN REMOVE TERMINATION NETWORKS LL OTHER DISK DRIVES Y CHAIN FROMA ON DAIS I O CONTROLLER I I I I I I I FDD FDD FDD FDD 2 DAISY CHAIN Figure 2 3 Model FDD100 5 Disk Drive System Configurations 2 4 ...

Page 23: ...s as shown in Figure 2 4 Even numbered pins are located on the component side of the PWB and odd numbered pins are located on the solder side Pin 2 is located closest to the corner of the PWB A slot is provided between pins 4 and 6 for connector keying The recom mended connectors for P1 are listed in Table 2 1 Table 2 1 Recommended Connectors P1 Type of Cable Manufacturer Connector PIN Contact PIN...

Page 24: ...sk drive frame A Fast On tab is provided on the disk drive This tab is an E T C PIN 3431 and the mating connector is AMP PIN 60972 1 Means for AC coupling only between frame and logic ground are provided on the main disk drive PWB however use of this feature may increase noise susceptability in the disk drive Modification is made by removing R53 1M from main disk drive PWB 2 3 3 TRANSMITTE R CHARA...

Page 25: ... A diagram of the Model FDD100 5 Disk Drive interface signals is shown in Figure 2 7 and the inter face signal timing requirements are shown in Figure 2 8 2 4 1 INPUT CONTROL LINES Input control signals are carried by eight lines one of which is optional 2 4 1 1 Drive Select Lines There are four Drive Select lines DS1 J1 10 DS2 J1 12 and DS3 J 1 14 are standard and DSO J 1 6 is optional A low true...

Page 26: ...LER FDD100 5 18 20 STEP 22 COMPOSITE WRITE DATA 24 WRITE GATE 26 TRACK 00 28 WRITE PROTECT 30 COMPOSITE READ DATA 32 RESERVED 34 SPARE ODD PINS RETURN DC GROUND INPUT POWER J2 12V 1 MODEL 2 12V RETURI J CONTROLLER FDD100 5 ZERO V 5V RETURN POWER SUPPLY 3 4 5V THESE PINS HAVE BEEN RESERVED FOR USE BY THE MODEL FDD200 5 DISK DRIVE Figure 2 7 Interface Signals and Input Power 2 8 ...

Page 27: ...SEC MAX SECTOR OUTPUT S fi 50 NANOSEC MAX r g r ON I I m I I S l SfCMI j I j f lj lSECMIN I I lJlJ1J I SECMIN 1 L EC MIN J rBI SECMAX lflJlflr J r 850j LSEC MIN lflJ SFS lflJ I SOMSEC 1 SEC MIN I I I 0 MSEC MIN l SOMSEC MAX 1 1 MSEC MAX VALID READ DATA WRITE GATE WRITE DATA IF HEAD LOAD WITH SELECT IF HEAD IS ALREADY LOADED 500 NANOSECONDS Figure 2 8 Interface Timing Diagram 2 9 ...

Page 28: ... selected 2 4 1 3 Direction Select J 1 18 This line controls the direction of travel of the read write head A low level on this line causes the head to move toward the center of the spindle only when a Step pulse occurs The Direction Select signal should be stable from 1 0 microsec before to 1 0 microsec after the trail ing edge of Step 2 4 1 4 Step J1 20 A low pulse on this line together with Dir...

Page 29: ...ONLY rf 200 MSEC I U ss U l 14 4 MSEC 1 5 MSEC HARD SECTOR 16 TAKEN AS AN ILLUSTRATION SECTOR INDEX SECTOR 15 0 SECTOR 1 SECTOR INDEX 15 I I I I 6 25 MSEC j4 12 5 MSEC I 200 MSEC t 1 Figure 2 9 Index Sector Timing 2 4 2 3 Write Protect J 1 28 A photosensor assembly senses the presence or absence of a notch in the diskette If a notch is not detected a low level signal is transmitted to the controll...

Page 30: ...ishes previously recorded information to the controller Information is transmitted in the encoding scheme used without discriminating between clock and data bits Decoding of data is accomplished by the controller Data and clock pulse widths are 1 microsecond 250 nanoseconds at the encoded frequency Read timing is shown in Figure 2 11 2 5 PROGRAM SHUNT MODULE Figure 2 12 shows the program shunt mod...

Page 31: ...3 MX MX BLANK BLANK HM D HM A SINGLE DRIVE CONFIGURATION HEAD LOAD WITH DRIVE SELECT B MULTIPLE DRIVE CONFIGURATION HEAD LOAD WITH MOTOR ON DRIVE NUMBER 2 PROGRAMMED HS HEAD SELECT HEAD IS LOADED BY DRIVE SELECT SIGNAL DS1 DRIVE SELECT 1 SELECT SIGNAL FOR DRIVE ONE DS2 DRIVE SELECT 2 SELECT SIGNAL FOR DRIVE TWO DS3 DRIVE SELECT 3 SELECT SIGNAL FOR DRIVE THREE MX MULTIPLEX MUST BE CUT FOR MULTIPLE ...

Page 32: ... way except to select either the HS or HM positions Any Drive Select signal will activate the Select Light and load the head if HS is programmed 2 5 4 MULTIPLE DRIVE COI IFIGURATION With a multiple drive configuration the MX Multiplex position and two of the three DS Drive Select positions must be cut see Figure 2 128 The shunt positions can be cut by using AMP special tool PIN 435705 or by bendin...

Page 33: ...y Interface Line C to pad associated with spare interface line Independent Head Add jumper between pads E and R Modify program shunt Load Pin J1 6 module to select neither HM nor HS Motor On with Cut etch between pads M and N then add jumper between Select pads G and P Indicator Lamp Cut etch between pads G and H then add jumper between with Motor On pads Hand P Indicator Lamp Cut etch between pad...

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Page 35: ...ated with magnetic oxide on both sides The diskette has 40 circular tracks that are spaced 0 02083 inch 0 529082 mm apart 3 3 DISKETTE HANDLING Protection of the diskette requires the same careful handling specified for computer magnetic tapes Use the following procedure A Return the diskette to its storage envelope whenever it is removed from the disk drive B Keep diskettes away from magnetic fie...

Page 36: ...ad and Write and a Write protected Read only diskette A photoelectric sensor detects the presence or absence of a notch in the side of the diskette When the open notch is sensed writing is allowed When the notch is not sensed covered with a tab writing is inhibited and a status signal informs the controller that a Write Protect condition exists Optional modifica tion to the disk drive electronics ...

Page 37: ...This delay is for stabilization of the diskette rotational speed and must be allowed any time the Motor On line is activated When DC power is applied a Power On Reset POR pulse automatically resets the electronics and inhibits inadvertent writing or erasing on the diskette Therefore the disk drive is ready for operation after application of DC power and one second after activation of Motor On also...

Page 38: ...LOGIC CONTROL LOGIC SERVO CONTROL LOGIC I READ DATA I WRITE DATA ERASE WRITE PROTECT L_ WRITE PROTECT SENSOR INDEX SECTOR TACHOMETER HEAD LOAD TRACK 0 0 I I I I tit TRACK 00 SWITCH l HEAD LOAD _I SOLENOID I I I I I I I I I I K J ENVELOPE SELECT CONTROL LOGIC STEPPER PHASE 1 2 3 4 PRINTED WIRING BOARD ACTIVITY LIGHT OPTIONAL FEATURE Figure 4 1 Model FDD100 5 Disk Drive Block Diagram 4 2 ...

Page 39: ...ion is in progress 4 1 5 READ WRITE HEAD The Model FDD100 5 Disk Drive uses a unique single sided read write head assembly that is mounted on the head carriage The head is fixed with respect to the carriage and diskette surface The head is basically a ferrite core that is mounted in a ceramic button assembly the face of which has a spherical profile The head also uses a trailing tunnel erase struc...

Page 40: ...ux reversals on the diskette The Read mode is entered on a selected disk drive by deactivating the Write Gate line Certain timing relationships are required to ensure stabilization of the R W head position see Figure 2 8 4 1 10 POWE R DOWN MODE When the 5V supply drops to an unsafe level during DC power down all Write and Erase cir cuitry is deactivated to prevent inadvertent writing or erasing on...

Page 41: ...red for the head load arm to contact the diskette and settle down before a Read or Write operation begins 4 3 DATA FORMAT To perform data transfer the operating system must be able to locate specific data areas on the diskette Two such format schemes exist both involve detecting and establishing a reference point on the diskette to organize data on a track and further divide this track into smalle...

Page 42: ...rack and a unique record identifier precedes each record Figure 4 3 shows a soft sectored format SECTOR SEPARATION DONE BY THE USING SYSTEM FM RECOMMENDED FORMAT SINGLE DENSITY HEX BYTE OF BYTES G1 10 1_ HEX HEX 00 FB 16 1 UPDATE WRITE QJ USER DATA CD GENERATED BY CRC GENERATOR IBM OR EOUIV Figure 4 2 Hard Sectored Format for Single Density 4 6 ...

Page 43: ...I 3 FF I 00 0 0 3 FF FF FF 4 CD FE AM I ID 6 00 I 1 I ID FIELD I ISYNC FF 16 G1 HEX BYTE NO OF BYTES PHYSICAL INDEX fl I I f BINARY BYTE UPDATE WRITE CD TRACK ADDRESS ZEROES SECTOR ADDRESS ZEROES 3 GENERATED BY CRC GENERATOR IBM OR EQUIVALENT FB FOR DATA FIELD OR F8 FOR DELETED DATA FIELD o USER DATA Figure 4 3 Soft Sectored Format 128 Bytes Sector 16 Sectors ...

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Page 45: ...DD100 5 Disk Drive is 8500 hours 5 1 2 MEAN TIME TO REPAI R MTTR This is defined as the average time for an adequately trained service engineer to diagnose and correct problems on site MTTR for the Model FDD100 5 Disk Drive is 30 minutes and does not include travel time or time when the disk drive is not released to the service engineer 5 1 3 SERVICE LIFE The Model FDD100 5 Disk Drive is designed ...

Page 46: ...en within five attempts that sector or track must be labeled defective and an alternate sector or track must be assigned If more than two defective tracks are encountered the diskette should be replaced 5 3 2 READ ERROR RATE If a Read error occurs up to ten attempts should be made to recover data Repositioning the head on the desired track is recommended if the error persists The Read recoverable ...

Page 47: ...kette surface These contaminants will generally be removed by the cartridge self cleaning wiper B Random electrical noise which usually lasts for a new microseconds C Small defects in the written data and or track not detected during the Write operation and which may cause a soft error during a Read operation 5 4 2 1 Soft Error Recovery Procedure To recover soft errors the following procedure is r...

Page 48: ...akdown in Appendix D All item numbers refer to the Illustrated Parts Breakdown Figure D 1 overall view 5 6 1 FRONT BEZEL To remove and reinstall the front bezel use the following procedure A Close door B Using a screwdriver carefully bend the two tabs located on the top sides of the bezel item 26 inward and push forward off the tabs on the diskette guides items 9 and 10 C Open door D Carefully pus...

Page 49: ... STEPPER MOTOR AND LEAD SCREW To remove and reinstall the stepper motor and lead screw use the following procedure A Remove head cable connector and main harness connectors B Remove four screws item 84 which attach PWB and remove PWB C Remove two screws washers and motor clamps items 64 65 and 66 that attach stepper motor D Remove E ring item 61 and washer item 62 from front end of lead screw E Re...

Page 50: ...and the cable is routed properly F Align head to correct track position by using alignment disk Head assembly will be approximately in alignment if stepper motor body is not removed G Readjust track 00 39 stop if necessary see paragraph 5 8 5 H Replace motor cover plate item 54 if damaged use new part 5 6 5 READ WRITE HEAD LOAD PAD This assembly could be easily replaced by merely compressing the s...

Page 51: ...ar end of the unit To reinstall reverse the procedure and slide the assembly into the grooves Lightly tighten leaf hinge mounting screws F Close door and position clutch assembly on carrier frame in center of drive hub item 16 Tighten leaf hinge mounting screws Check that door does not bind in bezel by opening and closing door If binding occurs loosen leaf hinge mounting screws and reposition carr...

Page 52: ...r assembly and remove it C From bottom of disk drive remove screw and washer items 34 78 that attach sensor block item 37 to main frame Remove sensor block from top of disk drive D To remove photo transistor item 43 from sensor block carefully remove bonding agent from around photo transistor using an X acto knife or similar tool E To replace photo transistor insert into sensor block with flat on ...

Page 53: ...k drive E Adjust and set index timing see paragraph 5 8 5 TRACK 0 0 SWITCH To remove and reinstall the track 00 switch use the following procedure A Remove connector from micro switch item 32 B Remove two screws and washers items 76 72 77 and remove switch C Reinstall be reversing steps A B Adjust per paragraph 5 8 3 5 6 12 SERVO COI lTROL PWB To remove and reinstall the servo control PWB use the ...

Page 54: ... F Remove screw and washers items 80 70 69 that attach solenoid assembly from bottom of disk drive and lift out entire assembly from top of disk drive G Reinstall by reversing steps A F Ensure that tab on solenoid frame is seated in hole in main frame H Check and adjust head load bail see paragraph 5 8 7 5 6 14 CLUTCH ASSEMBLY All item numbers refer to the Illustrated Parts Breakdown Figure D 2 cl...

Page 55: ...ep to track 34 D Sync oscilloscope external on TP5 Index Set oscilloscope to measure differential signal between TP1 and TP2 Ground probes E Set volts per division to 50 millivolts and timebase to 20 milliseconds per division F Write entire track with all one s G Measure read back head amplitude Average minimum read back head amplitude should be 200 millivolts peak to peak H Check motor speed see ...

Page 56: ...t procedures that may be necessary after replacement of an assembly or component in the disk drive Test point locations are shown in Figure 5 1 0 0 DTP1 lITP3 DTP2 e J3 P3 TP5 II TP7 II o 2 II TP4 J1 TP8 D TP9 TP6D D DTP10 Figure 5 1 Test Point Locations 5 12 o COM 5 ...

Page 57: ...ncy counter is available A Install a soft sector scratch diskette B Start motor load head and step to track 16 C Connect frequency counter to TP5 Index on main disk drive PWB D Adjust potentiometer R7 on servo control PWB for 200 1 milli seconds 5 8 3 READ WRITE HEAD LOAD PAD ADJUSTMENT To adjust the read write head load pad see Figure 5 2 and use the following procedure A Insert an Alignment Disk...

Page 58: ...tor Loosen track 00 switch mounting brac ket C Adjust track 00 switch position by moving its mounting bracket in direction as shown by arrow until switch is just activated D Observe a high signal at TP8 with oscilloscope Step to track 01 Signal level at TP8 should switch from high to low If transition from high to low does not occur readjust track 00 switch position E Step to track 00 Signal level...

Page 59: ... Step selected disk drive to track 00 C Adjust track 00 stop until distance between track 00 stop and post on main frame is 0 010 0 005 inch 0 0254 0 0127 em This task can be simplified by using a 010 thick mylar or other plastic strip between the stop and post and pushing the stop against the plastic strip Remove plastic strip after tightening screws D Step to track 39 and verify clearance exists...

Page 60: ...between start of sweep and first data pulse This should be 200 100 microseconds If timing is not within tolerance continue with adjustment G Loosen mounting screw in appropriate Index Sensor block until assembly is just able to be moved This is located on bottom of disk drive H Observe timing and adjust Index Sensor position until timing is 200 50 microseconds Verify that detector assembly is agai...

Page 61: ...sk drive to track 16 G Loosen two mounting screws that hold stepper motor to main frame H Rotate stepper motor to move head radially in and out and observe cat eye pattern on oscilloscope until the lobes are within 80 of each other then carefully lock down two previously loosened stepper motor mounting screws I Check adjustment by stepping off several tracks in both directions from track 16 and re...

Page 62: ...de of bail by at least 0 015 inch 0 0381 em from tracks 00 through 39 C If bail cannot be adjusted head load solenoid must be readjusted see paragraph 5 8 9 19 01 IN SOLENOID ENERGIZED 4826 0254 CM HEAD LOAD BAIL 1 104 015 IN 0381 CM MINIMUl 1 Figure 5 5 Head Load Bail Adjustment 5 18 ...

Page 63: ...off head load bail B Using a small screwdriver or similar tool reach through access hole on bottom of disk drive and bend tab on solenoid frame in to increase travel or out to decrease travel Adjust to 0 090 01 inch travel measured at center of head load bail 0 95 inch from solenoid center C Adjust head load bail see paragraph 5 8 8 Adjustment tab Figure 5 6 Head load Solenoid Adjustment 5 19 ...

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Page 65: ...ription Assembly PWB Main Assembly PWB Servo Control Assembly Spindle Drive Motor Assembly Stepper Motor Assembly Head Carriage Assembly Carrier Single Double LED Assembly Diskette Guide Right Spare with without LED sensor Assembly Diskette Guide Left Spare with without LED sensor Assembly Index Sensor Assembly Head Load Solenoid Assembly Head Load Pad Belt Spindle Drive LED Status Indicator Bezel...

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Page 67: ...APPENDIX B MODEL FDD100 5 DISK DRIVE ASSEMBLY DRAWINGS AND MATERIAL LISTS INDEX Title Assembly PWB Main Assembly PWB Servo Control B 1 Dwg No 650281 100 640204 100 Page B 3 B 4 ...

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Page 69: ... R2 C13 IC 9602 74Ls051 5 74LS 413C 74LSOOI4C 9602 15C CIS c R26 c J R49 c J R39 c J ell e r RSS f J R I c J Cl6 R3 c J C17 r J R36 R3S c J D _ R37 R31 c J C TP7 C75 R38 0 10 452 30 74LSII R S7 c J RS6 c J RS 140 74LS74 1 Cl91 TP8 R43 c J 5 lE RN 1 2E 7 4 LS I 4 j E 74LSOO 14E _9_6_0_2_1 g OC2 M TP9 R48 g CR80 CR I N TP6r IIJTP10 R50 CR s C21 tJ L co 0 RS1 CI8 I r r S H L N T 12F r 7 4 3 S I c J 4...

Page 70: ...r _ JI C9 L1 Q1 r Assembly PWB Servo Control B 4 ...

Page 71: ...APPENDIX C LOGIC SCHEMATICS Title Schematic Diagram Model FDD100 5 Disk Drive Schematic Diagram Motor Control C 1 Dwg No 650284 100 630322 100 Page C 3 C 5 ...

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Page 73: ...OJ4 1 4 L 1 37 __ J4 f I T r D04 1 I f C t J4 0 11 t __ L j 0 Lr J4 Z L _ _ ITo f6 I 30 I 4 I I L 2J4 1 0 II 2 0 G OJ4 J2 o I OJ _ 1 j J 7 III i r 4b _8 J 11 1 048 IfJ0 Jf 24 wiG Ilr I JI 2r IQK 1 11 3 I Q I 7 J 1 LJS3J lIl lD 0 5V TPS JI D QE 0 IF 0 13 3 _ ____ Jl I IF0 44330I 4 I L I r X 5 v J2 1 r l 12 JI 4 fF o i 3C B 5 t 9 c J 30 C20 ceo J L lQo IF 0 r 5 5_ T _T en R 5 IN 0 0 i 1 F r L rt1X b...

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Page 75: ...3 NOTES UN l m l _ ILAST U O OT USEO_ l QCATIUW TYPE 2 fA LM393 c9 _ 2A t 1E555 I L1 LQ 2 _ CWj 12 d 12 leB TACH 1 J6 2741 12 1 10 RS 3 01K 10 0 12 TACH 2 gz z L 2 I I 047 Rll J x 1 I 1 TOLERANCES XX ANGULAR xXX MATERIAL ISHEET 1 OF I SCf lEMATI C DIAG fCAM MOTOR Df IVE PWB 3 R21 IS NOT RE QUIRED WITh PCe 5 REVS A A ND e 2 ALL CAPAC ITORS I MIC OF J ADS 1 ALL RESISTORS I OHMS 1 4 W 5 fa NOTES UNLE...

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Page 77: ...gure D 1 D 2 D 3 APPENDIX D IPS ILLUSTRATION INDEX Title Model FDD100 5 Disk Drive Overall View Model F DD100 5 Disk Drive Clutch Assembly Model FDD100 5 Disk Drive Carriage Assembly 0 1 Page D 3 D 7 D 9 ...

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Page 79: ... 0 I a lD on I 0 a a u a 0 E a u D 3 ...

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Page 81: ...05 AIR 18 6 1 o 2 0 2 0 o 2 Bearing 2 19 6 4 o 1 4 3 0 o 1 Spacer Bearing 1 20 1 0 0 p o 1 0 o4 Ring Retaining 2 21 1 0 0 1 3 4 0 o 3 Washer Wave 1 22 6 4 0 1 4 8 0 o 4 Shim Large Dia 3 23 6 4 0 1 7 9 0 o 1 Pulley Hub Machined 1 24 6 3 0 2 7 3 0 o 1 Label Strobe 1 25 6 3 0 12 8 9 0 o 1 Belt Drive 1 26 6 5 0 1 9 9 0 o 1 Bezel Front 1 27 6 4 0 1 8 6 0 o 1 Door 1 28 6 4 1 5 6 0 o 1 Arm Disk Protect R...

Page 82: ... 3 0 0 1 Ring Retaining 1 0 0 0 4 1 2 0 5 Screw Soc Hd Gap 4 40x5 16 613800 00 3 Washer Flat 4 6 1 0 9 5 2 0 0 2 Clamp Motor 6 1 3 0 0 5 3 0 4 Screw Button Hd 8 32x1 4 6 1 3 0 0 0 3 0 6 Screw Phillips Rec 6 32x3 8 6 1 3 8 0 0 0 0 4 Washer Flat 6 6 1 3 8 0 3 0 0 4 Washer Split Lock 6 6 130 0 5 2 04 Screw Button Hd 6 32x1 4 1 0 0 0 4 2 2 0 0 Washer Split Lock 4 6 1 2 7 5 1 0 0 1 Ring Grip 6 1 3 0 1 ...

Page 83: ... J D 7 Q l l C l U ...

Page 84: ... 1 6 5 0 1 8 0 o 0 1 Carrier I Machined D 2 1 2 6 302 6 2 o 0 1 Shaft 1 3 6 4 o 1 8 2 o 0 1 Cone Thrust 1 4 6 3 0 2 7 1 o 0 1 Spring I Cone 1 5 6 4 o 1 8 4 o 0 1 Cone Follower 1 6 6 1 0 2 o 5 o 0 1 Bearing 1 7 6 4 0 1 4 8 o 0 3 Shim I 005 I Sm Dia 1 8 6 1 2 7 5 0 o 0 2 Ring I Retaining 2 9 6 1 3 2 5 0 o 0 8 Spring I Clutch D 2 1 D 8 ...

Page 85: ...00 5 Carriage Assembly Model FDD1 Figure D 3 D 9 ...

Page 86: ...URE z NO NO 4 0 1 6 5 o 1 6 9 0 o I Assy Carriage and Read Write Head D 3 1 2 6 5 0 1 9 8 0 o 1 Arm Head Load 1 3 6 4 o 1 5 8 0 o 1 Button 1 4 6 3 0 0 7 5 0 0 2 Pad 1 5 6 3 0 2 7 6 0 o 1 Spring Arm Return 1 6 1 000 4 5 2 2 6 Pin Dowel 1 7 6 1 2 7 5 3 0 o 1 Ring Retaining Push on D 3 2 D 10 ...

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Page 88: ...nia 92805 714 991 9700 Telex 685691 SIEMENS AKTIENGESELLSCHAFT This document may not be duplicated or its contents used_or communicated to others without express authority Subject to alterations A22742 A 1005 X001 7630 AG979 1 0 9 79 Printed in USA ...

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