Zenith SM-Z-90 Servisní příručka

SM-Z-89-37Double-Density Disk ControllerServiceManual2NI'Ndata~systemsZENITH DATA SYSTEMSSAINT JOSEPH, MICHIGAN 49085581;-8Copyright © 1982Zenith

2-4ILDOUBLE-DENSITYDISKCONTROLLERHARDWAREUNITZERO (DS1)uHARDWAREUNITONE (DS2)[,,.,.J~~Ir--_~CUTPROGRAMMING[~~~,~J~I,n,~"lMODULEuHARDWAREUNITTWO (

DOUBLE-DENSITYDISKCONTROLLER----l12..5~,.,-'+'.'.1.i('.1-1.'.1.JPROGRAMMINGMODULEHardware Unit Zero (OS1)f,·,-'·'·&

2-61L-DOUBLE-DENSITYDISKCONTROLLERHARDWAREUNITZEROHARDWAREUNITONE, )HARDWAREUNITTWO[,~-JI II..".J~",1_ _---.CUTPROGRAMMINGI~~~,~Jul~MODULEuu

__________12:-7DOUBLE-DENSITYDISKCONTROLLER,PROGRAMMING MODULESRefer toFigure2-7onPage 2-8 as you readthefollowing information.Usethefollowing informa

2-8,~DOUBLE-DENSITYDISKCONTROLLERFigure2·7Z-89-37 Double-Density Disk Controller Board.PartnumberHE 181-3614.uu

DOUBLE-DENSITYDISKCONTROLLER--'13:-1Circuit DescriptionRefer totheBlock Diagram (fold-out from Page 4-1)whileyou readthefollowing CircuitDescript

3-21L...DOUBLE-DENSITYDISKCONTROLLERCONTROL LINES (P2)Please refer totheSchematic Diagram (fold-in)whileyou read this description.All ofthedisk contro

DOUBLE-DENSITYDISKCONTROLLER13,.3U6CONTROL DECODERANDINVERTERU6 is a programmable logic array,designedtodecodeaddressandreadandwriteconditions forthec

3-41l...DOUBLE-DENSITYDISKCONTROLLERU14RAW READ LATCHU14lengthenstherawreadpulsefromthediskdrive electronics to a sizereadablebythe1797 (U12).U15DRIV

DOUBLE-DENSITYDISKCONTROLLER----'14-1p------~-------------~-------------------------------------------------~------------------------------------

111...DOUBLE-DENSITYDISKCONTROLLERTableofContentsSPECIFICATIONS 1-1RECONFIGURATION2-1'foChangetheInternalDrive " 2-1ToRearrangetheDrive Nu

4-21L-DOUBLE"DENSITYDISKCONTROLLERTOREARRANGE THE DRIVE NUMBERS...Refer tothefollowing chartandFigure4-1,andselect the configurationthatfits your

DOUBLE-DENSITYDISKCONTROLLER14..3HARDWAREUNITZERO (DS1)HARDWAREUNITONE (DS2)HARDWAREUNITTWO (DS3)I[::J~.I II:~n:22,.,..,...,...,.,JCUTI I...,7...

4-41DOUBLE-DENSITYDISKCONTROLLERHARDWAREUNITZERO(051)ll-l-l-l-l-l-l~1..1-..1nPROGRAMMINGMODULEHARDWARE UNIT ONE(052)ll-l-l-l-l-l-l~l..1-3nPROGRAMMINGM

14..5DOUBLE-DENSITYDISKCONTROLLER_t )HARDWAREUNITZEROHARDWAREUNITONEHARDWAREUNITTWOI IFigure 4-4Single-sided drives (H-17-1)programmedforH-88-1 Contro

4-61i...-DOUBLE-DENSITYDISKCONTROLLERSTARTING THE DIAGNOSTIC PROGRAMSTo startthediagnostic programs, bootupthesystem usingeitherthehard- or soft-sect

DOUBLE-DENSITYDISKCONTROLLER14--7o 4. 'Typetheletter BandpresstheRETURN key.Theterminalwilldisplay:H:BootYouwillhear some clicking noises fromthe

4-81'--DOUBLE-DENSITYDISKCONTROLLERDISK CONTROLLER CHECKOUTTheDisk Controller Checkout isusedto verifytheoperation oftheZ-89-37diskcontrol-ler ci

DOUBLE-DENSITYDISKCONTROLLER14..9Torespondtothisquestion,checkto makesuretheredlighton drive 0 is glowing.Ifit is,enterY.Otherwise, enter NandturntoPa

4-10,'--DOUBLE-DENSITYDISKCONTROLLERDISK CONTROLLER CHECKOUT ERROR MESSAGESPrompt:AreAllDriveMotorsTurning?Iftheyare not turning, be surethatpowe

DOUBLE-DENSITYDISKCONTROLLER...114-11GENERAL DRIVE/CONTROLLER DIAGNOSTICTheGeneral Drive/Controller Diagnostic, or TEST, is a diagnostic utilityused

DOU8LE·DEItIITYDISKCONTROlLER---...1111General Drive/Controller Diagnostic 4-11Initiating the General Drive/Controller Diagnostic 4-11Available Test

4-121"--DOUBLE-DENSITYDISKCONTROLLERTEST willnowask forthehardwareunitnumberofthedrive youwanttested. Forexample:WHICHDRIVE(0/1/2)?Atthis prompt,

DOUBLE-DENSITYDISKCONTROLLER14,.13Whenyou haveinserteda soft-sectored disketteandpressedRETURN,thesystemwillprint:DoubleDensity<YES>?Ifyouwantth

4-141l...DOUBLE-DENSITYDISKCONTROLLERD - GENERAL DRIVE CHECKOUTThepurposeoftheGeneral Drive Checkout is to verifythatyoursystem isreadingfromandwriti

__________14-15DOUBLE-DENSITYDISKCONTROLLER.Ifyou haveharderrors,thebestapproachistoexitthisprogram (type Eattheoptionmenu), formatanotherblankdiskett

WARNINGInserttheHitreturn4-161DOUBLE-DENSITYDISKCONTROLl.ERThefirst speed to be tested is 30 millisecondspertrack.Theprogramwillattemptfasterstep rate

DOUBLE-DENSITYDISKCONTROLLER...14-'17Tobeginthealignmentprocedure,insertthealignment disketteintothedrivewhosehardware configurationnumberappea

4-181""""-DOUBLE-DENSITYDISKCONTROLLERuu

DOUBLE-DENSITYDISKCONTROLLER----l15..1ServiceRECALIBRATIONYou willneedthefollowingequipmentto calibrateyourDisk Controller Board:• A Digital Voltmeter

5-211...--DOUBLE-DENSITYDISKCONTROLLERVCO BIAS ADJUSTMENTWarmuptheComputerfor aminimumof 15minuteswiththelidclosed.Connect yourDVMto testpoint1ontheH-

15..3DOUBLE-DENSITYDISKCONTROLLER_Figure 5-1Z-89-37.PartnumberHE 181-3614

IVIL'DOUBLE-DENSITYDISKCONTROLLERuuu

5-41DOUBLE-DENSITYDISKCONTROLLERVCO CENTER FREQUENCYADJUSTMENT(WITH OSCILLOSCOPE)Connecttheoscilloscope'sinputlead to testpoint2.Settheoscillosco

________________---JIfi-5DOUBLE-DENSITYDISKCONTROLLER.IN CASE OF DIFFICULTYIfyoursystemdoesnotoperate properly, makethefollowing checks.PROBLEM POSSIB

5-61DOUBLE-DENSITYDISKCONTROLLERDECIMAL TO OCTAL TO HEX TO ASCII CONVERSIONIIIIIIIVDECOCTHEXASCIIDECOCTHEXASCIIDECOCTHEXASCIIDECOCTHEXASCII000000NUL32

DOUBLE-DENSITYDISKCONTROLLER16.,1Replacement Parts List(Double-densitydiskcontrollercircuitboardpartnumberHE 181-3614.)CIRCUITPARTDESCRIPTIONCIRCUITPA

6-211..-DOUBLE-DENSITYDISKCONTROLLERMISCELLANEOUSPART NUMBERHE 181-3614HE 134-1158HE 134-1074HE 134-1163DESCRIPTION89-37 controller board16 conductor

DOUBLE-DENSITYDISKCONTROLLER~l7··1SemiconductorIdentification ChartINTEGRATED CIRCUITSCOMPONENTNUMBERU1U2PARTNUMBERHE 443-885HE 443-754MAYBEREPLACEDWI

7-21DOUBLE-DENSITYDISKCONTROLLERIntegratedCircuits(Cont'd.)uCOMPONENTNUMBERPARTNUMBERMAYBEREPLACEDWITHIDENTIFICATIONU3HE443-91274LS148VeeINPUTSIN

DOUBLE-DENSITYDISKCONTROLLER17--3IntegratedCircuits(Cont'd.)COMPONENTNUMBERU7U8U9U10U11PARTNUMBERHE 443-730HE 443·727HE 150-107HE 443-757HE 443·8

7-41__--------------DOUBLE-DENSITYDISKCONTROLLERIntegrated Circuits (Cont'd.)uI 3 4 57SELECTIAIBIY2A2B2Y-----OUTPUT-----OUTP:JTINPUTS INPUTSVeeiO

DOUBLE-DENSITYDISKCONTROLLER...,117..5C,IntegratedCircuits(Cont'd)COMPONENTNUMBERPARTNUMBERMAYBEREPLACEDWITHIDENTIFICATIONU16 HE 443-998 WD1691

DOUBLE-DENSITYDISKCONTROLLER11,.tSpecificationsTheZ-89-37 Double-Density Disk Controller interfacestheZ-89/90ComputerwiththeZ-37FloppyDisk.*TheControl

7-6ILDOUBLE-DENSITYDISKCONTROLLER

••DOUBLE.DENSITYDISK.CONTROLLER~__.;..._18~1Circuit Board X-RayViewNOTE: To findthePART NUMBER of a component forthepurpose of ordering areplacement p

Z-89-37 DOUBLE-DENSITY DISK CONTROLLER BOARDPartnumberHE181-3614.Shownfromthecom-ponentside.•

8-21DOUBLE..DENSITYDISKCONTROLLER•

1-21DOUILE..DENSITYDISKCONTROLLERu

DOUBLE-DENSITYDISKCONTROLLER12.,1ReconfigurationTo reconfigurethesystem, choosetheinstructions belowthatfittheapplicationandperform those steps.TO CHA

2-21_-----------DOUBLE-DENSITYDISKCONTROLLER• SetswitchSW501, section 4 (ontheCPU logic circuit board)to1.TheZ-37connected drives arenowtheprimarydriv

_________12:-3DOUBLE-DENSITYDISKCONTROLLER.TO REARRANGE THE DRIVE NUMBERS...Refer tothefollowingchartandFigure2-3,andselecttheconfigurationthatfitsyou