Seagate ST-506, Service Manual

Page 1: ...SEAGATE ThCHNOLOGY ST 506 MICROWINCHESfER SERVICE MANUAL MAY 1 1982 360 El Pueblo Road Scotts Valley CA 95066 Phone 408 438 6550 ...

Page 2: ...2 0 y G CPERA TICN S 4 2 1 General 4 2 1 1 Recording Format 4 2 1 2 Tr ack Format 4 2 1 3 Winchester Heads 6 2 1 4 Discs 6 2 1 5 Air Filtration Systern 6 2 2 Mechanical Theory 7 2 1 1 Track Sensor 7 2 2 2 2 2 3 2 2 4 Index Sensor 7 Ground Spr ing 7 Spindle Brake 8 2 3 Electrical Theory Flowchart 9 2 3 1 Motor Speed Control 9 2 3 2 Auto Recalibration 11 2 3 3 Drive Selection 13 ...

Page 3: ...novals And Adjusttnents 35 3 2 1 Main Control P C B 35 3 2 2 Motor Control P C B 35 3 2 3 Spindle Brake 36 3 2 4 Index Sensor 36 3 2 5 Ground Spring 37 3 2 6 Track Sensor 37 3 2 7 Front Cover 38 3 2 8 3 2 9 Front Cover LED 38 Side Franles 38 4 0 ILLUSTRATED PARTS CATALOG 40 4 1 4 2 Physical Locations 40 4 1 1 Drive Exploded View 41 4 1 2 Connectors Exploded View 42 Carr onent Locations 43 ii ...

Page 4: ...ol p e B PfiN 20019 44 4 2 2 Main COntrol P C B PIN 20040 45 4 2 3 Motor Control P C B P N 20003 46 4 3 1 Main Control P C B PjN 20019 48 4 3 2 Main Control P C B PIN 20040 50 4 3 3 Motor Control P C B PIN 20003 52 4 3 4 Spare Parts List 53 iii ...

Page 5: ...int 2 Tilning 24 2 4 Test Point 4 Tim ing 24 2 5 Test Point 5 Tilning 24 2 6 Test Point 7 and 8 Tim ing 25 2 7 Test Point 11 and 13 Tilning 25 2 8 Tes t Point Layout p e B P 20019 26 2 9 Tes t Point Layout P C B PIN 20040 27 LIST CF TABLES TABLE 2 1 Step Pulse Encoding Phase Sequencing 16 iv ...

Page 6: ...otection for the heads actuator and discs are provided by an impact resistant aluminum enclosure A self contained recirculating system supplies clean air through a 0 3 micron filter A second port in the filter assembly allows pressure equalization with ambient air without chance of contamination A patented spindle pump aSSUf es adequate air flow and uniform temperature distribution throughout the ...

Page 7: ... Below condensation 8 to 80 Non condensing 10 000 Feet 1000 to 30 000 Feet lOG s On side frames D C Power Requiranents 12V 5 1 8A Typical 4 5A At power on 5V 5 7A Typical 1 0A Maximum Maximun Ripple 50mv peak to peak 12V 5V Mechanical Dimens ions Height Width Depth eight Shipping Vleight Heat Dissipation Typical Maxinulm 3 25 Inches 5 75 Inches 8 00 Inches 4 6 Pounds 2 1Kg 7 0 Pounds 3 2Kg 25 Watt...

Page 8: ...Set tl ing Time 6 38 Megabytes 1 59 Meg aby t es 10416 Bytes 5 0 Meg aby t es 1 25 Megabytes 8192 Bytes 256 Bytes 32 3 milliseconds 170 mill i seconds 500 milliseconds 15 milliseconds typical Reducible to 85 IDS using fast seek algorithm Reducible to 205 IDS using fast seek algorithm Transfer Rate Average Latency 1 2 4 Functional Specifications 5 0 Megabits per second 8 33 milliseconds Rotational ...

Page 9: ... The track format used on the Seagate ST 506 disc drive is a slightly modified version of the IBM System 34 double density format This format is common to many industry standard floppy disc drives All ST 506 drives are formatted at the factory before shipping Data fields contain the bit pattern UJL Refer to Figure 2 1 Track Format The Seagate soft sector format divides each track into 32 sectors w...

Page 10: ...inal Track Capacity 10416 Bytes 2 Total Data Bytes Track 256 x 3 8 192 lL _ 3 Sector interleave factor is 4 SequE ntiallD Fields are sector numbered 0 B 16 24 1 9 17 25 2 10 18 26 etc 4 Data Fields contain the bit pattern 0000 as shipped 5 CRC Fire Code X16 X12 X5 1 6 Bit 7 of Head Byte ID Field equals 1 in a defective sector Cylinder 0 is orror free 7 Bit 5 of Head Byte reserved for nl lmberingcy...

Page 11: ...en shipping 2 1 4 Discs The ST 506 disc drive uses two non removable double sided 5 1 4 inch discs as the recording media The discs are designed upon curr ent iron oxide technology The actual disc dimensions are40mm inside diameter by 130mm outside diameter Thickness of the magnetic coating is 20 to 40 microinches increasing linearly from the inside diameter to the outside diameter The disc surfac...

Page 12: ...ides an index pulse to the recalibration circuit and to the interface of the ST 506 drive Once each revolution 16 67 ms the Index sensor outputs a pulse that is typically 200 microseconds in width The Index sensor used on the ST 506 drive is of the reluctance transducer type This cylindrical sensor incorporates a built in preamplifier The case of the sensor is grounded electrically which ties the ...

Page 13: ...ages against the spindle motor hub to slow the motor The pad contact material is of a rubber cork composition with wear life designed to exceed 20 000 cy cles When energized the brake will draw a maximum current of 267 milliamps The brake must be adjusted so that the contour of the pad contact matches the spindle motor hub When disengaged the dimension between the spindle motor hub and the pad con...

Page 14: ... square wave responsible for both selecting the motor coil to receive current and controlling the amount of current applied Current is supplied alternately to coils A andB as the Hall device senses the motors physical position Depending on the time between high going edges of the Hall effect sensor Ql will be turned off long enough for CS to charge to mor ethan 4 volts and force pin 1 of Comparato...

Page 15: ...ing circuit also inverts the speed error information and combines it with a carrier that properly biases the integrator 4 Pin 7 of Integrator A2 translates the error information into a level appropriate for biasing both halves of Ie AI which functions to control the current sourc e 5 The current control IC A3 supplies the proper amount of current for attaining proper speed as directed by IC AI Sea...

Page 16: ...latch Since the recalibration latch was reset at power on it will force the direction of the stepper motor outward If the heads are not positioned over Track each successive index pulse will increment the up down counter For each increment of the counter the phase encoder will select a stepper phase that moves the heads one half of a track closer to Track If the heads are behind Track they will mo...

Page 17: ... a signal to the controller that normal operations can begin The up to speed and recalibration latches will stay set until power is interrupted or drops more than 20 below normal If this occurs the recalibration sequen ce will again be initiated Seag ate Technology PAGE 12 5 1 82 ...

Page 18: ... to interface DRIVE SELECf 1 I DRIVE SELECT 2 WRITE GA1E 1 READY I DRIVE SELECf 3 fran interface r I to inter f ace I I DRIVE SELECf 4 I WRITE DATA SEEK XMPlEIE fran interface to interface A IVIlY I WR 1E FAU T I tnternal I I to interface I IIDEX to interface Drive Select serves only to gate other signals to or from the drive interface Without Drive Select the drive cannot read write or seek Seaga...

Page 19: ... will count down if the Direction line is high An increasing count will cause the PROM to select motor phases that move the heads toward Track The outputs from the PROM are active low which turn off the pre ddver transistors The inactive state of any pre driver transistor causes a current flow through the Darlington drivers To ensure fast head settling the stepper motor is always locked between tw...

Page 20: ...internal step pulse the retriggerable monostable multivibrator will time out and generate the Seek Complete signal Note that during the stepping routine the multivwrator is constantly triggered which maintains an inactive signal on the Seek Complete line Se ag ate Technology PAGE 15 5 1 82 ...

Page 21: ...6 o o 1 1 1 1 o 1 1 1 2 1 o 1 3 o o 1 2 4 1 1 o o 1 o 3 6 1 o o 7 o o o 8 1 1 2D PIN 1 1 1 1 1 I 0 0 0 1 1 I I 2D PIN 2 0 0 0 1 I 1 1 1 1 0 I I 2D PIN 3 1 1 0 0 I 0 1 1 1 1 I I 2D PIN 4 0 1 1 1 I 1 1 0 0 0 I IC 2C Step pulse encoding IC 2D Phase sequencing Seagate Technology PAGE 16 5 1 82 ...

Page 22: ...e center tap of the selected head is set to approximately 5 volts by the use of series resist or s By changing the ref er enc e to 5 volts 0 volts appears as 5 volts and the use of an actual negative voltag e is precluded Raw data riding on the 5 volt signal is amplified by the differential two stage amplifier before entering the low pass filter which attenuates the higher unused frequencies The d...

Page 23: ...o clock the output of the zero cross detector into the D type flip flop Any false clocks caused by a false zero crossing does not change the state of the flip flop The last differential receiver and 2 input Exclusive OR gate form a bidirectional monostable multivibrator that establishes the width of the data pulse output from the drive The line driver converts the data pulse to differential RS 422...

Page 24: ... provides a constant 25ma 50 ma peak to peak When active Reduced Write Current will pull approximately lma out of the current source nus reduces the peak to peak write current to approximately 46ma MFM write data is received by the line receiver and clocks the D type flip flop The driver transistors alternate write current between the windings of the selected head The center tap of the selected he...

Page 25: ...ctive The Head Unsaf e circuit monitors the head select output for the following conditions I No head selected 2 Multiple heads selected 3 Head selected for read during write 4 Head selected for write during read The above circuit constantly sums the head center tap voltage If the voltage exceeds the upper or lower threshold established by the resistor divider the circuit provides a Head Unsafe ou...

Page 26: ...face as an active Write Fault signal A low voltage fault condition will also turn off the write current source Additionally this fault condition will reset the up to speed and recalibration latches initiating an auto recalwration sequence Write Gate and write current are continuously tested If one is ever active when the other is not a fault condition will occur This signal is gated to the drive i...

Page 27: ...e the signal at Test Point 2 should resemble Figure 3 2 Test Point 3 Track Zero Sensod Test Point 3 may be used to monitor the Track Zero sensor A low logic level is a valid Track Zero indication Test Point 4 Ondex Sensod Test Point 4 may be used to monitor the Index sensor A highlogic level is a valid Index indication Only the leading edge of the pulse may be considered valid The typical signal a...

Page 28: ...ly the delay observed should be 50 to 60 nanoseconds A full track record of high frequency data UiL or l ll J should resemble 1 __ __ lSUJ V Test Point 15 Force Seek Outward Test Point 15 may be used to force the drive outward past Track Grounding this test point defeats the Clash stop prevention circuitry and allows the additional stepper motor travel This is a convenience feature for use in the ...

Page 29: ...Sr L 3 0ms J FiGURE 3 2 TEST POINT 2 LJ 5f STEP TIMING TEST POINT2 Lru I J 2 8ms 3 0ms TESTPOINT4 Jl n r S f L 200us typo 1 16 67ms 1 10 0 FIGURE 3 3 TEST POINT 4 INDEX SENSOR I t S TEST POINT 1 U I 500ns typo TEST POINTS I 1 S5 L1sms typo J PAGE 24 FIGURE 3 4 TEST POINT 5 SEEK COMPLETE TIMER ...

Page 30: ... TIMING MmWWf mvtyp I I I r I I I I I I I I I I I f I 1 1 JL 200n5 FiGURE 3 5 TEST POINTS 7 8 DIFFERENTIAL READ FILTER I I j TEST POINT 11 I L200n5 r 50 60ns TEST POINT 13 FIGURE 3 6 TEST POINTS 11 13 TIME DOMAIN FILTER PAGE 25 ...

Page 31: ...TEST POINT LAYOUT p e B PIN 20019 I 0 7 I 9 _ 4n IV ll _ PAGE 26 ...

Page 32: ...TEST POINT LAYOUT p e B PIN 20040 I 9 12 I 8 7 10 13 I 1 1 IV I 3 11 4 6 14 2 15 l 5 PAGE 27 ...

Page 33: ...Theory of Operations 2 5 51 506 Schematics Main Control P C B PIN 20019 Main Control P C B PIN 20040 Motor Control P C B PIN 20003 ST 506 Service Manual Seagate Technology PAGE 28 5 1 82 ...

Page 34: ...8 I 7 6 5 4 3 2 o n J o o c B A PIT CIlTA WRITE DATil PC 4DY zoo 8 _ _ _ _ _ 1 2 30 _ _ t II _ STEP _ DIRECTION L W 0 SEJ c r _ WKFIJI t T c EI tOUT ElVA t V tJ L w TY W AE TY ...

Page 35: ..._ _ 10 It A 02 16 E o 4 D j1 1 1 r 4 r __ 2_ J _ J _ __ lOC_ _q_ _OO_ 5 5 II C_12 l 0 t L f __ Sil7 L o 6 6 s 1277 Ok J 7 1D L_ r NOTES LE O THEl W e pECJ IEO I Z G I TANc E At uE AEE IN MS W S 2 A I 2 clQl fOe AeJ e IV CAPACITANCE VALViO A12E IN M CI20 ArzA IOO OS ACE IN 11 16 5 j IND CA CONN CToe 11 V INOICA1 CONNECTOI2 J l TH I2U 16 7 INDICATE TEST PolNT PIN PAf T NOT IN 6TAL i EO 7 7 6 r 8 8 f...

Page 36: ...41 ell J 6 10 LVA 1 2 v A ee 1 2K 1 2 1 29 1 10 I ll 1ZJ2 IO lOr lOt 10K 125 I I III 2 1lJ 1 2K J S l I 31 P 1 y 1 1 H l eo 5 VV Ir l 1 110 2 q P JV 1 r1 Hr I1 l II I t__ l _ __ n p DIl2 nON 4 IJl 2 L 1 IEJt O 1 1 __ n If AD 2 B c r J A 8 7 6 5 r 4 A ...

Page 37: ...l _ o t 1r 2 _ r f _ I f t _ re I 4 8 0 1 l 3 4 2 000 PON I 2 4 6 12 lfQ lq 20 5 6 NOT Sb l JN _ orHe l2WI e PEC IFIEO I 2E TAN li vN U6 Aee IN OHM 1 W 2 ALL I Y 12E T012S AIZ6 Ie w CAPJoi I AIJC E V Ae 11 1 1o 1l1ZD 60 20 4 DiODES laG 1N4I e 5 M INCI A e CONNE C oe 11 reo V INOluo T CONNE Toe J 2 THlZU 38 INDICATES TE POINT PI S l PA T NOT IN TALLIiC c 1 ro YU 12 ATE 50V 1 IO o lEI 7 t2c l 411 __...

Page 38: ...RELEASED FOR ASSEMBLY I __ tL1NEJ R O E S G N I 1 XXX MUST CONFORM TO ENGINEERING SPEC 30130 001 TOLERANCE UNLESS DTHERWISE NOTED PART NO SHEET 0 OF 0 2 0003 001 SCALE B SEA ATE TECHNOL APPRO EC HISTORY DATE NO TITLE pwB A5S Y MTt2 CNTI2L 9 3 2 C2 ZO I 4EMATIc MAX MAX INSIDE ES MATERIAL HARDNESS SURFACE TREATMENT NOTE S UNLESS OTHE2oW 5E SPEC IFIED I ALL e E SIST0C25 A12E IN OHM S W 5 2 ALL CAPAc ...

Page 39: ...mentally sealed Head Disc Assembly HDA must not be opened Seagate Technology considers a drive to be out of warranty if the HDA has been tampered with Any special tools or additional restictions wili be covered under the appropriate sections This sec tion of the ST 5 0 6 Servic e Manual will attempt to cover adjustments and repair of the field serviceable portion of the disc drive Any questions th...

Page 40: ...B mounting screws 2 Disconnect PI through P 8 noting their positions 3 Slide the Main Control P C B toward the rear of the drive and remove 4 Disconnect Motor Control P C B PI and P2 noting their orientation 5 Remove 2 6 32 x 1 4 Motor Control P C B mounting srews 6 Remove the Motor Control P C B 7 To reinstall reverse the above procedure using Loctite on the first three threads of all 6 32 screws...

Page 41: ...nting screw and verify that the contour of the hI ake pad aligns with the spindle motor housing 11 Route the brake solenoid wires through the retaining clip and connect P2 to the Motor Contlol P C B 12 Reverse steps 1 through 3 to replace the Main Control P C B using Loctite on the first 3 threads of all 6 32 screws 3 2 4 Index Sensor Tools Required 5 64 Hex Driver Loctite 242 30 Mil Shim 030 1 Re...

Page 42: ...ng wouDung 5CI eWe Kep 1aceme grouno spI1ng spacer and mounting screw 7 Center the ground spring over the spindle motor contact ball and tighten S Verify that the ground spring b ltton and spindle motor ball are clean and making good contact 9 Reverse steps 1 through 3 to replace the Main Control P C B using Loctite on the first 3 threads of all 6 32 screws 3 2 6 Track eSensor Tools Required 5 64 ...

Page 43: ...nt panel 8 To reinstall reverse the above procedure using Loctite on the first three threads of all 6 32 screws Note A water base hot welt glue way be used to secure the LED grommet assembly 3 2 8 Front Coyer LED Tools Required 5 64 Hex Driver Loctite 242 1 Remove 4 6 32 x 1 4 Main Control P C B mounting srews 2 Disconnect PI through P 8 noting their positions 3 Slide the Main Control P C B toward...

Page 44: ...e the Main Conuol P C B toward the reat of the drive and remove 4 Remove 2 6 32 x 1 8 front cover moun ting sc rews It is not necessary to remove the LED connector 5 Remove 4 6 32 x 5 16 side frame mounting screws washers grommets and spacers 6 Remove the right and left side frames 7 To reinstall reverse the above procedure using Loctite on the first three th reads of all 6 32 screws Seagate Techn...

Page 45: ...illustrated P arts Catalog 4 0 ll LUSTRATED PARTS CATALOG 4 1 Physical Locations 4 1 1 Drive Exploded View 4 1 2 Connectors Exploded View ST S06 Servic e Manual Seagate Technology PAGE 40 5 1 82 ...

Page 46: ...4 iI I I I 1 v 1V _ L B A ...

Page 47: ...A8LE P TO CONNECTORJG CONTROL PC B PRINT D CIRCUIT CABLE P5 TO CONNE CTOR J5 CONTROL PCB c B A RELEASEO FOR ASSEM8lY 1 SEAGATE TECHNOL 2 MUS CONFORM TO ENGINEERING SPEC EC HISTORY MATERIAL TOLERANCE UNLESS DATE NO TITLf OTHERWISE NOTED 1 7 81 A I LINEAR t t XXXXX O TAIL E A CASE DEP fH CIESIGN f J ll I HA RD N ES Sl _ _ _ t A N G UlA R t _ _t _ t _ _ _t 2A1 PRO r t SHE ET f 1 SURFACE I E S I IIS O...

Page 48: ...trated P arts Catalog 4 2 Component Locations 4 2 1 Main Control P C B PIN 20019 4 2 2 Main Control P C B PIN 20040 4 2 3 Motor Control P C B PIN 20003 ST 506 Service Manual Seagate Teclmology PAGE 43 5 1 82 ...

Page 49: ...0 0 0 Ci Cl 0 0 00 0 0 0 lil 9 0 0 0 l l 0 0 0 0 0 I I r I ITO rn Oi iii v r II 0 0 l A _ 0 0 0 Uo tOl 1 1 1 I J I I 5t i I W l ij i l III QI O oo OlL 0 r i 0 T I G 0 I 0 0A r 0 0 0 J J 0 0 ow o o WNG OO QS 0000 0 N J J J V Ol r J l0 0 0 0 0 0 0 0 0 0 I 0 0 0 0t 0 0 j 0 0 0 0 aJ 0 0 0 0 0 0 0 0 C J 0 0 aQ h I r H Y w i J H J J r 1 J J o 0 J J J 0 0 r i 0 0 9 0 0 0 0 O o 0 0 00 0 0 0 0 0 0 01 0 0 0...

Page 50: ... t 121 I J 2 f I C 27 I Jl _n I r J4 I I II L li O E J Q4 C CI2I cl2li 2 21 o j I 4 i 1 y I I 00 J5 125 1 1 e 2 1 1 3 es li 4 12 1 12 10 ell z 0 iF I 0 1 Clct f o 7 2 71 e R71 1 1 O I I leR4 ID I 14 2D I ep3 f2 P 2 1C I L I 2 I2Pl 1 I I AAAAAAA RClI RClO 1280 _ c 2 f1J lJ J7 11l lJJ8 oe C 8 iJ l C m J l CJl ...

Page 51: ...I TITLE 4 2 3 MOTOR CONTROL P C B PIN 20003 S H E E T O F 000 G 0000 o o o 0000000 000000 I A I A OOO OO O 0000000 JI 1 12 2 0 C 9 PAGE 46 ...

Page 52: ...rts Catalog 4 3 P arts Lists 4 3 1 Main Control P C B P N 20019 4 3 2 Main Control P C B PIN 20040 4 3 3 Motor Control P C B P N 20003 4 2 4 Spare P arts List ST 506 Service Manual Se ag ate Technology PAGE 47 5 1 82 ...

Page 53: ...CAP CERAMIC CERAMIC CAP CERAMIC I C 6330 1 I C 7408 I C 74123 I e 74574 loCo 7406 I C 74LS221 I C 7445 I C 26L532 I C 74586 I C 7410 I C 7438 I C 2074 I C 74191 I C 7400 I C 7402 I C 74LS14 I C 7407 I C 7404 I C NE592 I C 26L531 I C IM339 R PACK 220 330 1 s IlNf 7 PCS AMP 435704 7 I C SOCKET 16 PIN I C SOCKET 14 PIN CAP ELECIRQYrIC 22uf 16V TANT 4 7u 35V 10 PQYCARB lu 50V 10 DICDE 1N4148 DICDE 1N4...

Page 54: ...ESIS1t R 1 wl 5 220 Hi Rl 2 3 4 60 1 RESISTCR 1 4W 5 270 Cl M R14 61 8 RESISICR 1 4W 5 330 aM R5 6 7 8 21 24 29 38 62 5 RES IS It R Ijw 5 470 CHvi R15 2i 28 4S 46 63 2 RESISTCR 1 4W 5 620 Q M R39 53 64 26 RESISItR 1 fiN 5 1K RI8 31 32 52 58 59 62 64 66 75 78 79 81 89 90 97 102 104 65 3 RESISIrn 1 4W 5 1 5K RI6 17 26 66 1 RESISfCR 1 4W 5 2K R30 67 1 RESISTCR 1 4W 5 2 7K R76 68 8 RESISTCR 1 4W 5 4 7...

Page 55: ...ACK 220 330 1 6C SHUNT 7 PCS AMP 435704 7 6B 1RANS ARRAY 1PQ2907 CR Q2T2905 4H I C sa KET 16 PIN 6B I C sa KET 14 PIN 6C CAP CERAMIC 047u X7R 10 C4 CAP CERAMIC 33p NPO 5 C51 CAP ELECIRCLYfIC 22u 16V C27 CAP TANT 4 7uf 35V 10 C14 15 22 25 28 29 CAP CERAMITC 150pf 5 C17 24 CAP CERAMIC 068uf X7R 10 C21 CAP CERAMIC 100pf NPO 5 C8 CAP CERAMIC 330pf NPO 5 C10 CAP CERAMIC 470pf NPO 5 C20 CAP CE rrC 1uf Z...

Page 56: ... I L A LI I Q J 1 V A ILY L L V lk 66 1 RESISTCR l 4W 5 750 aM R88 67 2 RESIS1tR 1 4W 5 270 CH 1 R14 84 68 5 RESIS ICR 1 4W 5 330 aM R21 24 29 38 83 69 6 RESISIrn l wf 5 470 rnM R15 27 28 45 46 56 70 2 RESISTCR 1 4W 5 620 GM R39 53 71 16 RESISTCR 1 4W 5 lK R18 31 32 52 55 62 64 66 75 78 79 81 89 102 103 72 1 RESISTCR 1 4W 5 1 5K R26 73 1 RESISIrn 1 1 5 2K R30 74 4 RESISTCR 1 4W 5 4 7K R43 69 85 87...

Page 57: ...AP CERAMIC 068uf X7R CAP CERAMIC 00luf X7R CAP rnRAMIC 1uf Z5U DICDE 1N4005 DIeDE ZENER 6 2V 1N5234 DIffiEt 1N4148 IRANSISlCR 2N3904 RESIsrcR 1 5 10K RESISIrn 1 4W 5 47K Dec T C TrI 1 All 01 1V LA I L IU RESISIrn 1 4W 5 470 OHM RESIsrcR 1 4W 5 1 5K RESISIrn 1 4W 5 20K RESIsrcR 1 4W 5 510K RESISTOR 1 4Vl 5 lOOK RESIsrcR 1 5 1 2 MEG RESISIrn 1 4W 5 4 7K RESISTCR 1 2 130 OHM RESISIrn ZW 5 20 GfvI POr...

Page 58: ...Spinell e Brake Assmmly Index LID As semhly Ground Spring Assembly Shock Mount Shock NIDunt Spacer Shock Mount Washer Track Sensor Optical Inter Le t Side Fr arne Right Side Frame Front Cover Front Cover LID Front Cover LED Grannet DIP Shunt 7 Position 20003 001 20040 001 54026 001 54037 001 58061 001 52025 001 58023 156 16527 006 12616 001 64023 001 64024 001 62018 001 10850 003 13025 001 11825 0...