Power Supply

After troubleshooting procedures have been completed, the power supply voltages must be checked once again before the drive can be tested. This is to insure that the Burn-In test is testing a properly adjusted drive.

8.6.5 Bum-In Test

The Burn-In test is the final endurance test of the drive, revealing any malfunctions as hard or soft errors. This program tests the seeking, reading and writing abilities of all drives connected to the host computer.

The Burn-In test should be run, at a minimum, overnight after all repairs and adjustments on the drive have been completed. If any sectors experience errors, the Track Diagnostic program should be executed for all tracks containing suspect sectors to determine if these are recurring errors. If the errors persist, the tracks should be spared (drive Diagnostic utliity PARAM).

49

YES

SYMPTOM

1. Drive platters won't turn.

A. All LEOs off and stay

3. Unable to update Controller firmware

A. All LEOs go off, remain off

B. Busy LED lights and remains lit

CORVUS DEALER SERVICE

CAUSES

ac power improperly selected.

+12V misadjusted

+12V not present at drive mechanism

+12V not existent or not adjustable

Brake solenoid not releasing Drive motor defective

Mirror switches set wrong Interface card defective

Replace power supply Adjust brake mechanism

Replace drive sealed mechanism

Check and set properly Replace interface card Replace interface cable Replace Controller ROM Replace Controller PCA Replace backplane Controller unit address switches Set switches correctly set incorrectly

Controller ROM defective Replace Controller ROM Controller PCA defective

Drive mechanism defective

Drive not ready.

Bad track in firmware area HDA

Controller PCA defective Drive sealed mechanism defective

Drive format blown Controller ROM defective Controller PCA defective Drive sealed mechanism defective

51

Replace Controller PCA Replace drive mechanism

Turn on FORMAT switch, toggle RESET switch

Replace drive sealed mechanism Replace Controller PCA

Replace drive sealed mechansim Reformat drive

Replace Controller ROM Replace Controller PCA Replace drive mechanism

CORVUS DEALER SERVICE

SYMPTOM CAUSES RECOMMENDED REPAIR

4. CRC FORMAT CHECK will not begin or finish

A. Busy LED lights and Front bezel switches incorrect Check switch settings remains lit, or FAULT

Controller ROM defective Replace Controller ROMs LED only remains lit

Format not intact Reformat drive Controller PCA defective Replace Controller Drive sealed mechanism Replace drive mechanism defective

5. Unable to spare track

A. All LEOs off and remain Controller ROM defective Replace Controller ROM

off Controller PCA defective Replace Controller PCA

Drive sealed mechanism Replace drive mechanism defective

Maximum number of tracks Replace drive mechanism already spared (31 total)

6. Drive will not execute Servo Exercise under Diagnostic

A. Busy LED remains lit Power supply voltages Check voltages, adjust or replace supply

misadjusted as needed

Drive sealed mechanism Replace drive mechanism defective

7. Computer boots into monitor (Apple)

A. Drive goes BUSY, then Boot image corrupted Recreate boot image (see Corvus user

READY guide)

Boot program on Corvus utility Recreate boot image using good copy of

diskette corrupt utilities

Boot ROM on interface Replace Boot ROM PCA bad

Interface PCA defective Replace Interface PCA 8. Drive will not Boot

A. Busy LED lights and Drive does not contain Create boot image on drive (see user's

remains lit boot image manual

Boot ROM on interface PCA Replace Boot ROM defective

Interface PCA defective Replace Interface PCA

SYMPTOM

B. READY light remains lit

9. I/O errors during normal operation

A. Normal LED display or all LEOs off and remain off

10. Heads slam against inner crash stop (toward hub) A. Busy LED lights and

remains lit

ll. Sector destroyed during normal operation

A. Busy LED lights and remains lit

CORVUS DEALER SERVICE

CAUSES

Controller ROM defective Controller PCA defective Drive sealed mechanism defective

Mirror switches set incorrectly Front panel switches set incorrectly

Interface board defective Interface cable defective

Software currently running on host system defective

Boot image corrupted Defective track

Controller ROM defective Controller PCA defective Power supply voltages out of tolerance Power supply voltages out of tolerance

Power supply voltages intermittant or can't adjust Controller ROM defective Controller PCA defective Drive sealed mechanism defective

Boot ROM (where applicable) or interface board defective

S3

RECOMMENDED REPAIR Replace Controller ROM Replace Controller PCA Replace drive mechanism Set switches properly Set switches correctly Replace interface board Replace interface cable

Replace software with known good copy and reexecu te

Recreate boot image (see user's manua\) Execute CRC FORMAT CHECK. Spare any tracks returning errors

Replace Controller ROM Replace Controller PCA Adjust power supply Replace power supply Replace drive mechanism

Update Controller Firmware Check voltages, adjust if necessary Replace supply

Replace Controller ROM Replace Controller rCA Replace drive mechanism

Replace boot ROM. If problem persists, replace Interface PCA

SYMPTOM

12. Motor speed varies

13. Low motor speed

CORVUS DEALER SERVICE

CAUSES

ac power surge during read/write operation

Power supply voltages out of tolerance

Controller PCA defective Weak media spot on platter surface

Defective drive sealed mechanism

+12V out of tolerance dc cable to drive defective Loose dc connection at drive +12 V non-existent or not adjustable

Drive motor defective

ac input voltage set incorrectly See # 12. above Incorrect ac power setting Power supply voltages incorrect Defective Controller ROM Defective Controller PCA

RECOMMENDED REPAIR

Determine quality of ac power supplied to Corvus and host. Determine types of devices on same ac circuit. Large power consuming devices should not share power with the disk drive.

Check and adjust voltages Replace Controller PCA

Determine tracks affected and spare Replace drive mechanism

Check and adjust voltage

Check wiring, replace supply if bad

Clean connector pins, make sure connector is seated properly

Replace power supply

Replace drive sealed mechanism Check and adjust

Update firmware

Reformat drive and update firmware See #12 and 13 above

Set switches correctly Replace Con toller PCA Replace drive mechanism Replace Controller ROM

Replace 4118 RAM on Controller PCA Replace Controller PCA

Check and adjust

Adjust or replace supply as necessary Replace Controller ROM

Replace Controller PCA

SYMPTOM

D. All LEOs stay on

15. Head oscillates after drive is turned on

A. BUSY LED lights and remains on

CORVUS DEALER SERVICE

CAUSES

Paddle board cable connected wrong

Defective paddleboard Defective paddleboard cable Defective drive sealed mechanism

Defective backplane Power supply voltages incorrect

Defective Controller PCA Defective drive sealed mechanism

Controller Firmware corrupted Format corrupted

Power supply voltages incorrect Power supply defective

Controller PCA defective Drive sealed mechanism defective

55

RECOMMENDED REPAIR

Check paddleboard cable connections Replace paddleboard

Replace cable

Replace drive mechanism Replace backplane

Adjust or replace supply as necessary Replace Controller PCA

Replace drive mechanism

Update firmware

Reformat and update firmware Adjust power supply

Replace power supply Replace Controller PCA Replace drive mechanism

CORVUS DEALER SERVICE

APPENDIX A

GLOSSARY

CORVUS DEALER SERVICE

GLOSSARY

BACKPLANE OR MOTHERBOARD: two-slot printed circuit board which accepts the Mirror PCA (when installed) and Controller PCA.

BIT: single binary digit. Smallest representative unit of data, several of which make up characters (A-Z, 0-9, etc.). Bits may be either a one or a zero, on or off, set or reset. This may be shown by either a signal being present or not, or by a

signal changing states or being constant. .

BLOCK: a relative quantity of data bytes. The Corvus disk defines one block to contain 512 bytes of data, the smallest addressable unit within the drive. The host operating system may define a block as 128, 256 or 512 bytes in length.

Externally, since the disk drive handles data in sectors, no apparent conflict appears to the host system.

BRAKE OR SOLENOID BRAKE: immediately after power-down, this mechanism engages, so as to minimize contact time between heads and disk surface, and brings the platters to a stop.

BYTE: any multi-bit digital value, usually eight bits long. The Corvus disk drives use eight-bit bytes.

CABINET OR ENCLOSURE: the cabinet which contains the IMI drive mechanism, power supply and fan. The front bezel attaches to the cabinet basepan. Two screws at the rear of the cabinet secure the cabinet top to the basepan.

CONTROLLER OR Z-80 CONTROLLER OR INTELLIGENT CONTROLLER: the disk controller circuitry including the Z-80 microprocessor and support logic.

CORCOM: the rear bezel unit which accepts the power cord, and contains the line filter, line voltage PCB and fuse.

CYLINDER: all data tracks in common vertical alignment. There are 306 concentric cylinders on all H-series drives.

The Model 6 has two tracks per cylinder, the Model 11 has four, and the Model 20 has 6.

DISK MECHANISM OR SEALED MECHANISM: the IMI disk drive assembly consisting of platters, drive motor, head assembly and stepper-motor mechanism, all in a sealed, cast aluminum body. The above components inside the

; sealed mechanism are not field-servicable and the unit is not to be opened by any other than a Corvus factory facility, otherwise the warranty will be void.

DMA OR DIRECT MEMORY ACCESS: method by which data is transferred at a very high rate, independent of the processor. The processor is put into a "wait" state, where it does no data manipulation. The DMA circuitry takes care of all details, using the Z-80 address bus for destination or origin address for data transfer.

DVM: Digital Volt Meter. A meter used for measuring voltages, which shows output by means of a display consisting of changing digits, proportional to the voltage measured.

FIRMWARE or CONTROLLLER FIRMWARE: Z-80 code contained in the first two cylinders of the drive consisting of routines for the Spare Track Table, Virtual Drive Offset table, Pipes, and Semaphore Status Flags. The appropriate routines are downloaded from the Firmware are into the on-board RAM for execution by the Z-80 Controller at power-on time.

FRONT BEZEL: the front panel of the cabinet, containing the Paddle board PCA and logo.

GROUNDSTRAP: located at the lower end of the spindle in the drive sealed mechanism, the grounds trap consists of a copper metal strip terminating with a carbon button which rides on the spindle end. This device discharges any static charge which may build up on the platters or spindle.

HEAD: in the Winchester disk, very low-mass glass-ferrite, aerodynamic-shaped component, containing a wire winding. There is one head for each data surface which float 18 microinches above the platters on a cushion of air.

When current passes through the winding, an electromagnetic flux is induced into the platter surface representing a bit.

HEADSTACK: casting to which all heads are attached. Located in the top of the heads tack is the microchip responsible for head selection and signal buffering.

IC: Integrated Circuit. A hybred, densely populated wafer of silicon containing many resistors and transistors.

56

CORVUS DEALER SERVICE

MEGABYTE: one million bytes.

MFM (MODIFIED FREQUENCY MODULATION): a method of writing information on a magnetic surface which allows a higher bit density to be used, therefore increasing storage capacity while decreasing size.

MOTOR CONTROL PCA: printed circuit board responsible for monitoring the spindle motor speed and adjusting this as necessary.

NRZ (NON-RETURN TO ZERO): digital representation of information used by microprocessors.

PADDLEBOARD: the small PCA located on the front bezel, which contains the three LEOs and four function switches.

PCA: Printed Circuit Assembly. The Printed Circuit Board, assembled with all its components.

PCB: Printed Circuit Board. Epoxy board with a copper circuit etched onto it. The PCB is the bare board without the usual components such as resistors, transistors and integrated circuits.

PLATTER: circular disks coated with a magnetic oxide that will retain a magnetic flux induced by the read/write heads.

Both surfaces of each platter contain data. The 10-megabyte drive has two platters, while the 20-megabyte has three.

REAR BEZEL: the rear most panel area of the cabinet, containing the flat cable connectors for the interface cable, video connectors, power cable and fuse holder. Serial number is located on the rear bezel, also.

SECTOR: each track is divided radially into 20 segments. Each segment is one sector, and contains one block of data, one CRe value, and header information required by the disk controller.

SINUSOIDAL WAVE: a wave form that represents periodic oscillations.

TRACK: all points on one surface with the same radius. Tracks are configured concentrically on each surface.

WINCHESTER TECHNOLOGY: a unique design first developed by IBM as a means to reduce the size of a disk drive while increasing its capacity and removing the posibility of contamination of the disk components. The result was a disk unit much smaller than the traditional 14-inch disk platters with equivalent capacity. This is due to new head design and the use of the sealed-environment used with the disk drive which does not allow the external atmosphere inside the disk mechanism. Inherent in this design is heads that rest on the platters after the drive is powered off. The Corvus disk system uses International Memories Incorporated (lMI) Winchester disk drives.

READ/WRITE PCA: the printed circuit assembly responsible for changing the data received from the heads in MFM format and amplifying and shaping the data signal before passing it on to the Controller circuitry for manipulation.

CORVUS DEALER SERVICE

APPENDIX B

H-SERIES PARTS LIST

DESCRIPTION DRIVE CABLE 34-PIN DRIVE CABLE 2o-PIN PDLBD·-BKPLN CABLE

CORVUS DEALER SERVICE

H-SERIES PARTS LIST

CORVUS DEALER SERVICE

APPENDIXC

INTERNAL CABLING CHART

CORVUS DEALER SERVICE

H-Series Drive Internal Cabling Chart

The following references of "left" and "right" are as seen from the front of the drive cabinet.

All H-Series Drives Flatcables:

-Mechanism-to-Controller (34-pin) Mechanism: One edge forward Controller: one edge to the left -Mechanism-to-Controller (20-pin)

Mechanism: one edge forward

Controller PCA: top connector only, one edge to the left -Paddleboard-to-Backplane (20-pin)

Paddleboard: one-edge down Backplane: one-edge to the left -Backplane-to-Host Interface (34-pin)

Backplane: one edge to the left

Host Interface: refer to the Installation Guide Dc Power Cables:

- To Drive Mechanism:

Yellow wire forward - To Backplane:

Yellow wire right

The following references of "left" and "right" are to a drive mechanism that is held upside-down, with the IMI serial number label to the

left.

Drive mechanism:

-Motor Control PCA:

Brake connector: located at left end

Drive motor connector: located at right end

Track zero switch flatcable connector: 90-degree rotation before connecting to molex pins NOTE:

On Motor Control PCA assembly number 811-01908, the drive motor connector (J-22J will have an open pin after all connectors are attached. This open pin will be at the right end of the connector.

-Read/Write PCA:

Stepper motor connector: yellow wire nearest the case

2PL

FUSE

"I'

^{, ' >}

,f'

".-"",' I

I

'. STRIPE

/ /

I

/

, ~

1 - - -_ _ , 3 2PL

NEXTASS\'

\ \~

7⁸ - - - - ' ,

DETAIL'A^N

~J05CALE

USED ON

UNLESS OTHERWISE ~ OIMENSIONS AIlE 1M

TOLEMNCES ON

-APPLICATION

REVISIONS

OESCRIPTION OATE APPROVE

REL FOR PROO

~

_8005-^{110 '0'} ₈₀₀₅ ^~:Q'I

6MB _{091~ .,m'58} bMB/1i _{09'55 09161} '111.18 09153 09159

111 ... 6/ .. _{09156 09162} 20"6 ₀₉₁₅₄ O<JIElO

20"'8/" 09157 09163

*.

*aIZ!IOT _ _

COR\IQSSYSI~"131

s..

* •

FINAL ASSY 'H' DRIVE

r22\4Dl

,---<,1

~Fb _~PL ^@

I

~ %ER

4 ^~ I _I ^~

^I

I ^f

i

\ ®

(5)

_.~

@2PL

V 20'

~~II

@2PL

REVISIONS

PeO RE DESCRIPTION DATE APPROVED

~2PL

R£L FOP, i'RDO

_ - - - 1 1 0

•• CORVOS S'YST'EMS

• ~ 2D2!IO'T",*-.s.. ___ CA~lll

TlIOe _ _ _ _ _

1_ .... ^{_10 _ _ ...}

..

_-_._--. -_ _ --+ _ _ _ -1 U~~~H~

-""-""-"'--~

....

--~~ ~---~

TOUAAHCUON

DOTI!OFDIIo\WIOOQ

- -^-~,---I --- ^---~

NEXTAaY USED ON

APPlICATION

UNLESS OTHEI'IWISE PEClFIED DIMENSIONS ARE IN INCHES

TOLERANCES Off

~EE PARTS :":ST

Th .. doC"""" contIIIM profIIWt..,.

,"format ... ancIle ~ 'IINII" 1M uptWMd

__ .. _m __

COf'd*tion thae It _"', not: tie

_ 1O . . . _oIcoowue

S~.

OAT! 01' DllAWlNG

9-22-81

*

*

*

CORV(JS SYSTEMS 2Il2!IOTaoie _ _ Son'-.CA~1)1

* •

SCA~E I : I

6MB FOAM

TOP COVER

8056

2PL

o

o

o

,2)

^REF.

\ \

\ \

\ \

\

','0

Gn

\

\ \

\ ^\

/

\

/

\ ^\ "

33

jg ..

34 J6

2 SWl ^-3

3"f-

i~

®2PL I

JD

/

I

111 -

gl

2 30 X

0

0

o

\

\

@

\

UNLESS OTHERWISE SPECI~IED DIMENSIONS ARE IN INCHES

TOLERANCES ON

n

~

~--;

++-

r-:

I

i

I i

nua doc","*" contain. propr...,

u'ttonnMlOI'l Ind II <leti.,.. upon ,he

•• ~ c:andiUon 11'1a! .l will not: 0.

u . . . dIrwc1~ Of IndtrKttJ In .,.". • . ,

_1D __

^ef~

SYSTeIlllS

REVISIONS

DESCRIPTION DA TE APPROVED

*.. *

^~ CORVOS SYSTEMS 2D2901""" _ _ s...-CA 9'5 131

~---+---~ ~ ~~

;t XX ;to """"N., 'N<i ~:::::...

GMQ

'~("'K?LA"I':::-D

NOTES: UNlESS OTHHWISE Sl'lCIfIlD

7 6 5

4

PCB SHEAR TOLERANCE

XXX - 050

CAMA"ILLO,CALIF. tao 10 (801).8.-1101

-I

PARTS LIST ~-- ^{owe. NO. p L. ~ 2..} 4 13 - \ 0 \

^SHEET

L.

OF

2- ^REV.

^lEE

UI'MB . . .

INT. I

ITEM

NOTE QTY

POWER ONE

DESCRIPTION. VENDOR NO. REF.

DEI.

NO.

REQD

STO PART NO.

J

I 41Z-- 5'2-4\6 C.~\ ASS 1 S W/5S 52.0415

2. ^\ 02>\ - 52.10'59 .\l\\ PR\N1t:,D '-N\R\"-\G BO~Rt) 52420 AI

~ , DB'L-52.775 \R~NSFORN\~R T\

~

5" I \ l \ -

^{I [ )}

rL

~

S T ^{k 1\ N}

^{~ \~}

^T'D R

^~M

3'-lll D...'L

en ^\

^f

l \ '- \ D'L lD \

\~J\N ~'()

T nR

~_\llDS~C1

CL~

1 \ I l I - 10 2..h 2- ,Rr\hlS\STOR. 2.hl ~D155 0.4

B 3 32.0 - \D'2.Q,'2; ~\L~)(\N5ULATOR)

Of 3 3'20 - \O'Z.qO

~N_J\\"&~

1-0

^--~

10 La 350-

\O'Lo~

SC k l \jJS,

~.~.

La - 32.

^{I ' i}lb

--11 4

^3~t)-

\DlnD'Z..

^f ,.I' ^{tJ~- ~} \ ~ ^I

^{' t} L ^P

_5/~o

_T\ J

ⁱ

12 2 316-20'-:'64 ^{i'y' V'v'}

^{~\ 6. ~' '..:..}

13 REF 52659 ^{r.)C H E.}

^~,A-T

ⁱ C

~ GM,,"IGB/ACC~"

-.~1II1otO Al~

PARTS LIST ^{~,. ~~·PL.} 52659 - \0\ ^tHEET 2 oF4 ^REV.

^SEI

&&

^{SHT. I}

rTlM _HOT! QTY flOWIR

)NI:

DEICRI'TION. VENDOR NO. R". DEI.

NO.

"(GO

ITO 'ART NO.

I / 505- 524 21 P R I r~ T F [) Vv I R'

^I

t~ cJ ^{pJrjf\ r-\} tJ _{52420 AI}

^I

I

2

ⁱ

3 ^{F,)EF TR ;-\Nc) F() f~ j'/\ C R} 52775 ^T\

LJ

5 ^{2 /}

~4_?()y.2,'7

PC) r t ^{r~ T- 10 Iv E} T f'l~ 500..n.. R

^{J j}

16

b ;,; ^Ir.q

/ ' , ' , j " / { \

r

^{! , -,-}

E !v T

ⁱ

J /"/ \ [ r' f !~\ 2K ^{RII) )9}

I

7

8 ^{t?- Il}

^)~

)(., -; '/ !-/

_L 1-' (" _{- ~,} ) (

T ,/

, < ' . . . . f l . I~·

22 2 W e--I \/\)

..

J-l

F-) _{, - ) j} C

b

9 ^{I /51 ,'~,,!} !e' ^{~ 1_0- 12 V'J ~~\C!() C F RI1}

\

f

/0 I /Cj'.'-/ -",

' ) I ' _ J ' .J '. I

I 5 ..n.

^{~ ~ c~,}

\

^{1\ /}

\

^_~l

c

c~ C

(F RIS

r-/ ^{I ~}

^I

3 ^{15CJ -?f ,~{, I}

^'? [ r " " ^r

j /v ^{c:: 9!} (F

12 ^{h.. _,} I _,' ; .

^j;'

I. 2 K

^{L/ 1 , _ / . (j ~}

RB, 18,22

,I )

I ^{j -2 0 ~} 72 ^~ _3.6K

^~

R 21

- 11 3 '?()3<?3 i 'i O-'l. R9, 25,7

/5 ^{2 -20327 47...(L R4L24}

^I

/0

^I

/ 7 _{2. '-Z0367} , 2.2K , _{RIO, 17}

/S

_{_}

^{I /50} '(7()3 /5 RE~; /~ T (jF: 4.7 K Y4 W 5% CF R)Z

... -

L.-ttI\ BISHOP GRA'"HtCSIACCUPRESS

• . , "IEOROER NO A1162'1

66

PARTS LIST ^~".

&£."..,.. . .

^~~~·PL. 52659- \0\

SHEET

3

^OF

4

SHT. I ^{REV. SEE}

ITEM

NOTI

QTY

POWER ONE

DESCRIPTION. VENDOR NO. REF. DEI.

NO. REQD STD PART NO.

19 ₃ /5(J-Z()356 RESISTOR 750J4W 5% CF RI3

_J

20} 3

ZO I 150-20307 RfSJST[)R 6.8.A.Y4)/V 5% CF R23

21 , _{l50- 20373 RESISTOR 3.9K} 'l4W5% CF R2.

22. ^2. 13{)-/O287 Ie V()LTASE RE6:fJLATOR hl1723 /)I;L

23

2w4 ^{I 17Z - /()24 q} TRAN515 TDR ZNb5S1 ^{(1/ .}

25 ^{REF 17/- /~Z45 ~} 2N3771 02

26 V?~F 17/ -/()Z61 , ^{ZIV6569 Q3}

27 ^REF 17/- 10262 TRA1V5/S TtJR ZN 3[)55 QLI

28

C1 3 11/-/()Z5J DI[)DE fA 20f) V IN4(){) 3 CR)J ~ 9

30 4 /1 /-/OZ 56 ^~ hA 5DY ^{NIR 750} CR 2;3) ~8

3) 2 11/- /()Z S2 ^{_~A / {)(J V} IN51tJI CR 6

_J

J

^J

32 / 1/2-/DZ 73 r· ^{ZEIVER I{)V} /IV 75BA CRS

^I

33 ^I /12-/0[){)6 DJDDE ZENER S.6V IN 752 A CRJO

34 ^{I liZ -10608} DIODE ZEN[R 3bV IN 974B CRI2

35 ^{I IbO-/COI3} SCR .BA 50V S05{)BLS3 SCR

^J

~RTS LIST ~ ^{;r'·PL. 5Zb59-IOI I . . T-1} o'-I.~~

':... MOTII:::D iTD-;A~~o. D.IO,,,'TION.

^VENDOR

NO. R.' .•••.

37 ^I IO/-2f)QSI CAPACITfJR S ELECT IQDDOL35 CI

;38 _{J 10/-/01ID} ^j

^~

_{100/35 C2}

39 ^Z 10/-/0/ II I/~o C4 /6

ltfJ'D ^/ /[)/-2{J812 ^• /()()O/35 C5

~ '1 ^{I IOI-IDI08} , ^{IOOO/lto C9}

.4z

^'

^{/ IOI-Z0950} , ^{£-LEcr e4 Q(){) /6 [,6}

_'-13 ^{2 104-/0093} C/-lPA CITDR. MYLAR _ f){)I/I()O _C3

_J

₇

44.

45

46 ^{2 32/-/0679 I.e,} saCKEr 14 P//v FOR: U ^I, l

47 ^I 4{)Z-/3CJ20 IlEATSINK fOR: 0.1

48 ^{J 350-10663 SCREW £-} 32)( '" SELf TAP rOR: 01

49 ^{I 352-/02/8 SCREW 6-32x 5/ 16 rOR: =CR I}

5D

51 Z 916- 21208 WIRE Ib AW6 BlK b

^H

¥I" ^{x Ya T} A.A

52- ^I 916-21032 WIRE f6AW6 WHT bYla

^N

r" x ¥e T AT

53 ^{2 916 - 2.1097 WIRE} tbAW6 BRN 5" 3/,,-)( 3/e T B B

4Y~"

...

o

c

B

A

8

THIS OI\AWlNG AND T).t1E INFOf'IIMATION IT t:C\INTAINS ARE THE '"M)PERT'¥ OF 'II • .aNO AJIIl TO !If USED

~~~~e~ __________________________________________________________________ -4 __ ^{~'~ Q~}

~ lo~---:s~1

A. """", ... 1-'''' +SV, PI""7-'-foJD

e. '" PIN .. PIN

,1.-.

^{!w, PN e .. w.JD}

_'441 ~5-2.4-b.8.IIIZ./~.lb,I9,ZO)

j~-9~

_ _ _ .... _ T D l I I " C I C I I f f _ 8

-REDUCE WI? CURRENT:

o

c

B

A

8 7

"'--""-"-"--

OM..y_.,.._O'_~~_ _""-"""0' _ _ _

10. _

--.

-R)(..D CR'3, ~414S

II RQ~---~---r----~I~ USI ~e~ ________________ -=~

________

^~

________________________________

^~

__________

^~~~~~~~_

9 LSIO

R U41,SI6'3 U52,6ZS129 U'53,B25IZ~ L143, LSlf4

'- r.

^RZ2

-t<

^~~

'--_____

15"-!r;;- ~ r;;-;~~=---.;6H~

U50 ~~~ __________________________________ ~

I LS'!Z

o

C0401'MANO 8iJ$ ')4IJ-ltJO

[ >

o

nil DRAWING AND THE IIIfOIIIIIATION IT COM-

J

TAM AIlE THE PIIOI'EIITY OF . . AND AIlE TO

o

C

S

A

8

THIS DRAWING AND THE IfIfOfIMATIOH IT CON-TAINS ARE THE PfIOPERTY OF 1M! AND ARE TO

D S 1 0 RPl

~-~

8

'~'S DPAW'NG AND THE INFORMATION IT CON·

fA,NS A~E THE PROPERTY OF ,101' AND ARE TO Sf JSED ONLY FOR THE PURP'lSE OF MANU·

l"".tr"'I.'DING DARTS FOR 111.11

J:25-1 ""~. PK.K uP

~~ __________________ ~ ______________________________________________________ ~~~~~ ____________________________ -=-~N~D~E~X~_SH-Z

JZ5'-z.

D

.A

.

A& ^'"

B~~H~

^__

~

________________________________________________________________________________________________ -41 __________ ^{-_PO __ W __ [R __}

L_O_5~S7

~5V4_-~9~~39

NOTES.: UNL ESS OTHEflCWJSE SPECIFIEO.

I. It, , OI"E~S'O"'S '~C"F"

2

R1 R2 C1 C2 R3 R4 CR1 CR2

R9 R 10

~~11 R12 R13 R14 R17

R20 R21 R22 C5

~ . ~R23

L---.JGND R 18 ( ) 5 U 1 a ^{2 ' - /} "'c{'i

~U2

R5§:Jf)CR4R15

• C3 C11

---C=:J-+ C4 R6

---L=l22

N

+ ^CIT]

Q:

_C6 ^-c::=J-R19 J24 ^U4

^{I )}

~ ⁾

U3 U5 MOTOR

U6

~

rnnJ -c::::J- C 8 U9 U7

I

_U8

~ I ~

_U10

⁾ 10

^{m JJ <}

TP2 R36

I ~ I~ •

CONTROL

::J

^TP1 _U11) ^J23

o

TIll DRAWING .,., THE IIFOMIATIOH IT COM-T~ /II1II THE I'fIOf'IIITY OF III .,., AIlE TO

o

NOTES: UNLESS OTHERWISE SPECIFIED.

I.

2.

3.

ALL RESloSiORS ARE IN OHMS (.r..), 1/4W,5%.

ALL CAPACITORS ARE MICROFARADS (p.FJ.

NOT USED; (9, RI6

DItf._ DaTE MfMOCiIES

M.L.IFF 9-1:1-82 ."CO·I:/PCQA ~E:

-,

^{CIID. DATE} MOTOR CONTROL

R9 R 10 t- R 11 R12 R13 R14 R17

R20 R21 R22 C5

~GND R18

n

^R2~/N

U1 Q2,-/

'Of

)"2 R5§::JfJCR4 R1S

• C3 C

11

--c=t-+ C4 R6

----c~2

+

Q:

_C6

U3

~

C7 -r:=:J- ^U7 -c::::::::::J- ^{C8 U9 un}

I) I ) I ) ) 10

^{::0 m}

-c::::::::J- U 4

<

R19 J24 U8 U10 TP2 R36

~ I ~ I~ •

us MOTOR CONTROL

U6

~ :::J

^TP1 _U11)

80

c

o

~~_R~/2~?~I.=S~K~ __________ ~ _____________________________________________ -~C~H~IP~~~e~~~-?~~I_%

'"

LSI4-

o~---.---=======~~~v---~H~O~SE~L~Z_'_~~T

^t

') +$V

All (MIII(tIt.IOfII 1NC11(1 TOUIIWIICI.I

o

_ _ ~_~~·~R~O~\~~B~L~E~ ______________________________ ~q~

5HT-1

AA 1~.I.~ 502.::...<f.,"",:C""'-~---jt--_+-^{_ _} ---ir-=:26:::-:::~:::-O=-2_~"T._I_-_2_0_'_ ... ",

~~ ____ ~ ______ -' __ ~ ____ ~ ____ ~~~_'_---___ ·-+ __ =~~·~~i

2

8

__________ . _____ ~~--+_-+-=-2_7:_-lP42 ________________ __ -+-+--+-_+--=2-=f3-1P41

D

•

C22,'24<lpF 1 v'/'/I?"::"'--!""'+---+---'

.> RL+~ C20

J3

R88

g--

^{C21 R95 ~} _____________________________ ~

L_---'

Dans le document CORVUS SYSTEMS H-SERIES 5.25-INCH WINCHESTER DISK DRIVE (Page 75-0)