Shugart SA800, Maintenance Manual

Page 1: ...SASOO SOl DisketteStorageDrive 2 J 2 J 2 J C J ShUgart Associates ...

Page 2: ...SA800 801 DisketteStorageDrive 2 J 2 2 C J Copyright 1977 Shugart Associates ...

Page 3: ...res Page 2 3 4 5 6 7 8 9 Diagnostic Techniques Preventive Maintenance Removals Adjustments Physical Locations SAS09Exerciser Connections SASOO SOl PCB Component Locations SASOO SOl L ogic Manual SASOO SOl Schematic Diagrams 3 5 7 17 21 22 23 31 ...

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Page 5: ...uilt on a PCB whose dimensions are 8 x 8 The Exerciser PCB can be used in a stand alone mode or it can be built into a test station or used in a tester for field service The Exerciser is designed to enable the user to make all adjustments and check outs required on the SA800 801 drives when used with the SA 120 alignment diskette The exerciser has no intelligent data handling capabilities but can ...

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Page 7: ... the written data and or track not detected during the write operation that may cause a soft error during a read 4 Worn or defective load pad The following procedures are recommended to recover from the above mentioned soft errors I Reread the track ten 10 times or until such time as the data is recovered 2 If data is not recovered after using step access the head to the adjacent track in the same...

Page 8: ... Improper carriage torque To recover from a seek error recalibratc to track 00 and perform another seek to the original track TP 2 3 4 5 6 7 10 II 12 16 21 24 25 26 27 Read Data Signal Read Da ta Signal Read Data Differentiated Read Data Differentiated Signal Ground Signal Ground Signal Ground Index Head Load Index and 80 I Sector Pulses Read Data Data Separator Time I Data Separator Time 2 Write ...

Page 9: ...ted in Figure 1 During normal preventive maintenance perform only those operations listed on the chart for that preventive maintenance period Details on adjustments and service checks can be found in the maintenance manual Observe all safety procedures 3 3 Cleanliness Cleanliness cannot be overemphasized in maintain ing the SA800 80 1 Do not lubricate the SA800 801 oil will allow dust and dirt to ...

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Page 11: ...alled between capacitor clamp and base 4 1 2 Motor Drive Pulley a Loosen set screw and remove pulley b Reverse procedure for installation Note When installing a new pulley the drive pulley must be aligned with the spindle pulley so that the belt tracks correctly 4 2 Side Cover Removal a Retract screw from upper casting wall suffi ciently to allow the side cover to be rocked out b Lift cover off sc...

Page 12: ...n a Remove side cover Section 4 2 b Disconnect the wires to the actuator terminals solder joints c Swing out the cartridge to guide assembly Section 4 3 8 d Remove screw holding the actuator to the cartridge guide CAUTION Restrain the head load arm to pre vent its impact with the head e Reverse the procedure for installation 4 61 2 Head Load Actuator Adjustment a Remove side cover b Energize Head ...

Page 13: ...9 Black H R7 Brown 6 L6 Red and B R2 Orange c Remove cable clamp holding wires from detector 9 d Remove screw holding detector to the base plate and remove assembly e To install reverse procedure 4 7 2 Index Sector Photo Transistor Potentiometer Adjustment a Insert Alignment Diskette SA 120 b Using oscilloscope monitor TP I2 Index sync internal negative DC coupled set vertical scale to 2 V cm c Ad...

Page 14: ...ocedure No adjustment necessary CARTRIDGE GUIDE ADJ TOOL MOUNTING SCREW ADJUSTING SCREW FIGURE 6 CARTRIDGE GUIDE ADJUSTMENT 10 4 9 1 Cartridge Guide Removal a Perform steps 4 3 through 4 6 1 b Remove C clip form pivot shaft Reference Figure7 c Remove pivot shaft d Tilt the cartridge guide slightly and remove it from the upper pivot e To install the cartridge guide reverse the procedure PIVOT SHAFT...

Page 15: ... from P2 connec tor Black 10 LI 0 Red 2 L2 Brown 5 L5 and Orange 8 8 Note This step is only necessary if the stepper motor is to be replaced d Loosen 2 screws and swing clamp down to allow withdrawl of motor CAUTION DO NOT LOOSEN THREE SCREWS COATED WITH GLYPTOL 11 e Remove the grommet on the cable that is inserted into a slot on the Track 00 Detector bracket f Turn stepper shaft until the carriag...

Page 16: ... be within 70 amplitude of each other If the lobes do not fall within the specification continue on with the procedure Reference Figure 9 f Loosen the two mounting screws which hold the motor clamp to the mounting plate CAUTION DO NOT LOOSEN THREE SCREWS COATED WITH GLYPTOL g Rotate the stepper motor to radially move the head in or out If the left lobe is less than 70 of the right turn the stepper...

Page 17: ...ained 4 11 5 Head Penetration Adjustment Note This adjustment is not normally done in the field The only time that this adjustment need be done is when the stepper mounting plate has been loosened or removed a Place the penetration tool PIN 50380 on the gauge block and insure that the gauge reads 030 3 on the small hand and zero the dial for the large hand This results in a reading of 030 EVEN AMP...

Page 18: ...rriage stops Check that stop is 020 010 between collar and carriage 14 d If clearances are not within tolerance continue on with adjustment procedure e Turn DC power ON f Step carriage to track 02 g Loosen Track 00 stop collar h Grasp end of lead screw in back of stepper motor with a pair of pliers and manually turn lead screw clockwise to the track 01 position Next detent position on stepper moto...

Page 19: ...sectors have equal to or less amplitude than the middle 2 sectors Reference Figure 13 15 I C LI IMOTOR CAPACITOR STEPPER PLATE P N50112 41 1 f 00 111R H STEPPERPLATE M MOUNTING SCREWS L H MOUNTING 0 SCREW DO NOT I LOOSEN i ATTH mNT AC DRIVE MOTOR TO OBTAIN THE PROPER ADJUSTMENT DRIVE REAR VIEW FIGURE 12 j Re tighten the 2 R H screws If either of the outside 2 sectors increase in amplitude greater ...

Page 20: ...e e Install the light and push button assembly by reversing the removal procedure f No special orientation is required when installing P6 onto the PCB No adjustments are required to the push button assembly f Adjustment of the door lock should not be necessary If it has to be the gap between the armature tab and the latch should be 015 010 This adjustment can be made by loosening the two screws on...

Page 21: ...P1 CONNECTOR P2 CONNECTOR 5 PHYSICAL LOCATIONS DOOR HANDLE ACTIVITY LITE PUSH BAR FUNCTIONAL FACE PLATE DRIVE BELT 17 SECTOR I NDEX PHOTO TRANSISTOR ...

Page 22: ...LATE HEAD LOAD SOLENOID MOTOFi CAPACITOR P4 CONNECTOR P5 CONNECTOR STEPPEF MOTOR P1CONNECTOR DRIVE MOTOR LEAD SCREW DAMPER SPINDLE TFiACK ZERO STOP R W HEAD TRACK ZERO DETECTOR CARRIAGE ASSEMBLY TRACK ZERO FLAG 18 ...

Page 23: ...WRITE PROTECT DETECTOR INDEX SECTOR LED 19 EJECT MECHANISM ...

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Page 25: ...SA 800 801 D C POWER CABLE 0 DRIVE SWI TCH ES INDICATOR LITES 21 6 SA809 EXERCISER CONNECTION D C POWER CABLE FROM POWER SUPPLY STEP RATE POT SA 809 EXERCISER ...

Page 26: ... I Jumper Plug Installed as Shipped Test Point SA800 801 PCB Component Location 22 ...

Page 27: ...23 SA800 801 LOGIC MANUAL ...

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Page 29: ...OTECT CAN BE ORDERED WITH 0 NP ALLOW WRITE WHEN WRITE PROTECTED X ANY OF THE ABOVE Ul 8 16 32 S IG OR 32 SECTORS c o 0 ALTERNATE INPUT IN USE X 0 2 4 61 S 10 2 14 16 18 NINE ALTERNATE I o PINS X I 01 02 D4 DO S CUSTOMER I NSTALLABLE DECODE DRIVE SELECT OPTION X TABLE II C ALTERNATE INPUT HEAD LOAD X FACTORY CUT TRACE OPTIONS r INUSE LED FROM DRIVE SELECT IJ X Y INUSE LED FROM HD LD X PCB TRACE TRA...

Page 30: ...TP26 D I TEST POINTS I rn lG 11 rP6 J6 I I o o o J3 o E DO 25 o 1 l I I II J5 0 OD 0 r 26 0 1 A o 01 10 HL ClCJ 00 0024 gg X OS r1il RI CI I 2 00 RR 0 I B O O gg gw II PI I 88 027 H OOT4 0 T588T 10 I 800 I 49 I 50 t 0 LJ 4 I 0 00 I f 4 3 5 81 0 0 0 0 P3 4 I NOTES A I 0 0 00 DENOTES CUT TRACE JUMPER OPTION MUST CONFORM TO ENGINEERING SPEC ES 30 EC HISTORY SHUGRRT nSSOCIRTES I 2 0 DENOTES T O T POIN...

Page 31: ...B3 I 1 B2 BI I ____J BO 5V110 I I FOUR I 04 BIT 1 4 A3 COMP 02 I J A2 74L85 01 J AI 1 M US T CONIIFORIMITIOIEINGI IN EE Ri NG SPE C IESi3llOOO OIii EC HIS T OR Y iSijr 1 UlC I 1jRIT r1 S C 1 1 j il n T F i L_ il NOTES MATERIAl TOlERANCE UNLESS DATE NO Tm E A OJ GND WHEN INACTIVE AND 1 5VDC WHEN ACTIVE OTHERWISE NOTED 6 15 READ WRITE INDEX SECTOR 2 CONNECTOR SYMBOL REFERENCE l JI V J2 W J31 J6 CASE...

Page 32: ...PROT R4 DA030 r 2 INDE X LED LI DA030 W GND INDEX R3 DA030 T R K 00 LED I v DA030 2 GND TRK 00 R2 DA030 2 GND TO DOOR _ CLOSED SW DA040 B NOTES I OJ GND WHEN ACTIVE 24VDC WHEN IN AC TIVE MUST CONFORM TO ENGINEERING SPEC ES30000 0 ECHlSTOAY SHUC r lRT r lSS H lrlTE_S A A 2 CONNECTOR SYMBOL REFERENCE W JI W J2 W J5 MATERiAl T t DA TITLE STEPPER CONTROL I 13 ALL ODD NUMBERED PINS ON JI CONNE C lOR AR...

Page 33: ...OTECT GRY WRITE PROTECT EB OPTIONAL BLK OA020 LED LED DET WHT 5V WR iJROT DA020 L R E D _ _ PROT B GN gA O USE BlKl B iJ IN USE LED BRN LED DAOIO B AI r f 0 2 1 1 I LJ 0v I NOTES CD GND WHEN INACTIVE AND 1 5VDC WHEN ACTIVE MUST CONFORM TO ENGINEERING SPEC ES30000 0 ECHISTORY SHUGRRT r lSSOClnTES A MATERIAL TOLERANCE UNLESS DATE NO OTHERWISE NOTED 15 039 LINEAR XX RELEASED FOR ASSEMBLY CASE DEPTH l...

Page 34: ...SED DAOIO HEAD LOAD S0LENOID GND TO DOOR ORG CDOOR I RED CLOSED sw CLOSED SW OA020 GRN SLU n IOJ HE AD J O V VIO U 24V TO SOLENOID I I I I I j Sl I I lI NOT E5 MUST CONFORM TO ENGINEERING SPEC ES 3OllOO O U 0 1 r1 S C I f I 1T A AI IJ GND WHEN ACTIVE 24V WHEN INACTIVE MATERIAL TOLERANCE UNLESS DATE TITLE MOTORS SOLENOID SWITCH OTHERWISE NOTED 1 7 I i i5 OR 230 VAC XX I 7 UNEAR CASE DEPT I XXX Of I...

Page 35: ...31 SA800 801 SCHEMATIC DIAGRAMS ...

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Page 37: ... v f C l 4 I 015 IO IC01c th 00 c 4 19 x e l 0lZjlr X I Ir O T eD 14 2EMOVC i 1MF 2 F1ZOM oao AtJD 1 l ALl II J eol 4 c sg ou 0 ____4 _ _ _ __ __f c 40 c 1 2e E viO 12 14 C1210 Cb Cil8 1Z14 TP2 7 I IZE FelZ E e O Ic A IO l l i lb r U6Er O U E xesoo 012 V e C cLe c r 1 1 1CI c a 0 5V t 0 00 0 Z 4 J ETUI2t J ___11 PULL UP ao E _ WQrn C e A _ e g 6 __ A I B 5V c o ...

Page 38: ...CE UNLESS OTHERWISE NOTED MUST CONFORM TO ENGINEERING SPEC ES 3000lHl MATERIAL HARDNESS AHGULAR APPRO I4 l f 1 I SHEET 2 OF L SURFACE E_S 4 RSlourSIDE MAX 0 SCALE DOC COOE PART NO I REV EC TREATMENT eN INSIDE MAX I l SI00 2 101D2 1 __ 1 LINEAR _ XxxX x t OET A IL fIA o d t o l I R EL EASE D FrOR ASSE MB LY_ 1 CASE DEPTH 1 DESIGN 1 2 S1oo I I PULL UP X QO 9 eo 1 l U 14 5 12 R 1 1 tOil 3C R EA OV oB...

Page 39: ...B 34 DA iA 39 13 12 4 STEI l l i TP8 34 II 0 29 20 2D 46 IJ Q JT LlO n 7 27 24 J lCI S V OUTEN UUJ20748 CR I CRI3 5 1 IB IN4Q 3 o Bl MlR I 25 5 G 1 9 IIIJ4003 A 1J I400 LB 2 Q 32 TS1 I 5 1 5v I e o I R TP2 IB 2 R 4 7 cr 10 Rbb 2C 24 9 8 14 10 L5 i SV 4 7K IIJE j GIC M R2 Z RS7 RS6 ID 1 Ie 15 22K b2 lOt 7 RbO 1 3 18 8 270 vv 47 t D TK ilI f 8 T MiR3 23 II 0 L 2 2 Rf B Ie 7 CRI2 CRI4 Cf tG 240 MTR4 ...

Page 40: ... r CliSfoMiR DI 0 0 I i 10 II lSTA llE 1 021 Obi 7 A Bo OPi o 1 2 r D41J 0 or 15 A A Q 3 13fZ 12 I I I V II 6 0 J 1 lB A B I L 6 0 I 14 63fo A B B I L F J RIS CRI FC lrCRS R20 O 2C _ __ 3 L _L _ _K__ _S_ J C 4 r I 5l K 4 4 rl O l 17 00 F L 51 I l T 2 l 5 f c l o s 3E r 1 7 CIS CIA rzx I p e 5 9 0 CRI 3E 1500 2 1 0 1 0 2 _ _ _ 3 t 5 jt_ 1_ _ __ _ I I r y yy 5C 8 r 0 5 5 _2Q7 12 3 r Ir l oS 2 r 24V ...

Page 41: ...A l 2 EA D GA Te C e OO REb D WI E t t _ _i XSBOO 4 5VA l2U1e I 9 0 3K 1 8 N C12IZ RI R 7 310 UJD6 X I E CTO JI 21 l O V SEL n X5e oO DOOR C LOSED 1 5800 OR x SSOO W PROTECT l 2 L 4 __I JV I Iw l ll 10K TRACK e20 li o RG r I c c Uo D12 I W 0 ol J As e Me Y 2 5 04 2 l105 I A 11c I IA I L l I 1 _ O F0 rO EN N E _ f ro l S E E IG A L l f l _ _ l _F _ _ L Of I LI_ 1 _ S 5_0_ Li _ _ _ _ _ _ _ _ __ _ __...

Page 42: ...0 1404 1474 140 1 1402 1400 TVPE E Sf OQ1 k l uc I it ED r 41 E M001 _ z ecc t J lb LL i eo t JOTE5 Ut JLf 5S OT E JJ15E SPE c IED I A L L RE SISi0125 Atte IU O 1 4W S o 2 ALL CA PAC TOQ JI l E II oJ WC lZOr Jl It AD 5Ov 8D 1dIo 3 A LL p JOUC ORc A e OOk H lOeyo 4 ALL OlODE A t2 110 14 48 s ALL i2 A TOIZ A R E 2 1 J1 1 A P I lOICJl TI c U T nU Le oP I oru 1 0 DIC A T S JUMPEIZ oP O 8 C O lI J TC l...

Page 43: ... 50575 4 2 78 ShUgartAssociates 435 Oakmead Parkway Sunnyvale California 94086 Phone 408 733 0100 TWX 9103399355 SHUGART SUVL PRINTED IN U S A ...

Page 44: ... The interface is identical at each connector b The LSI PCB does not use the 5V 15V pins at J5 The pin at J5 is not terminated to anything 2 Optional Feature a All functions available on the fully loaded 801 are on the LSI PCB b An add trace option NFO prevents the head from being forced out past tract 0 c An add trace option TS enables true FM data separation maintaining synchronization during ad...

Page 45: ...bus e No adjustment of the sector separator or data separator is necessary Enclosed you will find a circuit diagram and a component overlay to help you understand the PCB All the SA800 Series drives will be shipped in a SA801 config uration to change to a 800 1 or 2 simply move the jumper from position 801 to 800 on the PCB Since we are delivering the new PCB in the lQ80 I would appre ciate feedba...

Page 46: ...DID ijij j T 00 00 NFO 0 0 RR o 0 0 0 0 DC 00 D 00 C 00 I Roo s DSl OO DS2 00 T2 DS3 00 DS4 00 i T5 T6 i l 8 L_ l 00000 DOD 00 TITLE PCI M1TW CJAIK F ILM L YE flSM O fERl 800 S II L YEI 3 fIF 5 PMT MUMIlE It i SH COO c n ISCH E I I C I M 25135 0 1062 I ...

Page 47: ...34 CL 7 IlD 5 0 8 5 s 0 33 4 7t OS 10 5 O 6 C3l r sf i J 3 O 7 10 v 44 In fan fR31 4 7 0 SO 4 7K _ _ j 10 H ZW 13 7 O 00J0 1Io 1 30 J ZT cU 1 l a ocx 3b I I 1 4 a8 2 1 reP I I 4a 34 STEu e 3 13 2 34 I I I 0 29 IJ OJT 4B 27 OUTEJ j GI S J a l 1 25 I 5 tf IT I I w z __ lll1l OOOQ Cl D D 1u li I lE Tl CCoq _IT I Q mC 1Jl t I I M I s i 1 d I lbll 240 B I OJT JT EI 1 LE AD OAt 5 lCI7 24 Ie 5 81 1 S 7 L...

Page 48: ... I J o lAo I CR3 J 8 I I 6 i I L_ __ J L v 8 S l 1l II I I I 0 I 5 t I 3 I 2 NIl I1E DO l II jA T r I 12s13 s I I r I 5 J N JT r YJ ltT et I J l Q sv SO I W 0 0 I J fc _ rrl bAle IUZ 4 11 3 U R A 5V 00 01 D I T J ULC T I I F l l c C I In 4 0 l rA Q CT Z _ _ _ _ _ r 0lY 100 L tRl 1 C Iolll l n p 0 1 a 0 ew I C l VI c f llC T 3 T C 31 C TI Ie ell l a l T 1 5I r tl L _ 13 IS 24 V 1 0 I Oo L CI t c 3 ...

Page 49: ...G 8 I I I 8 tTl ruWCTlCJ o 0 c l J G s 0 8 g J g C7 U I j IV CD tJ w I I 0 0 1 o EQQJ Eill QQ _ 8 8 8 0 r r r I r r I I 71 s s d l 7 iE G8G o o o o o 00 50574 43 FIGURE 7 7 PCB COMPONENT LOCATIONS PIN 25136 7 18 ...