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EK-RV20P-IP-001
May 1988
36 pages
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7.7MB
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Document:
RV20/RV20-P Optical Disk Drive Subsystem Illustrated Parts Breakdown
Order Number:
EK-RV20P-IP
Revision:
001
Pages:
36
Original Filename:
OCR Text
EK-RV20P.[P-001 RV20/RV20-P |LLUSTRATED OPTICAL DISK DRIVE SUBSYSTEM |PARTS R BREAKDOWN -y HOW TO USE THE IPB GENERAL This IPB is compiled following the organization and nomen- Description - Lists the name of the part and pertinent specifications (when required). Asterisks preceding the description denote the subordination of the part to the next MAJOR ASSEMBLY LOCATOR (When Apbllcablel DEC Part No. - Lists the Digital part ordering number. A blank ‘ clature of the englneerlng drawing structure higher assembly. The!MalorAssembly Locator (first illustration) is anindex that provides a description and a figure reference for all illustra- in this column indicates a Dlgltal part number was not assigned at the time of publication.” _ tions used in this. manual Ty . ECG Cut-In-The notation at the top of this, column indicates the ‘ECO level of the system (option), at- which the IPB was INDENTED PARTS LIST This manual identifies each assembly belng broken down,;;,( initially prepared. Subsequent ECO level designations, that (figure reference caliout), and all parts of that assembly. .‘modify existing parts or add new pans’to.‘the device, are Further breakdown of.an assembly is shown by an asterisk (*) ~inserted in the ECO Cut-in column next to the part that is preceding theitém -caliouts inthe Descrlptldn Column. The added or modmed subordination of thatitem with respeet to thexMaiqr Assembly. A single asterisk preceding an item description indicates that ,_'Und On Code - Letters in this column correspond to the .number of asterisks preceding an item is used to denote the Variation-codés assigned in Figure 1. Parts.with an Alpha notation(s) are used only in those option variations. A blank ? mdlcates thatthe part is used on all qp;ron variations. the item is part of the major assembly being illustrated. Items that are subordinate to single asterisks items,;are’denoted by two asterisks (**) and immediately follow the related single asterisk item. Addmonal asterisks are used, as required; to denote further subordlnatlon This system of part identi- Ref Flg No. -~ A crossrreference betweén illustrations. For each Major Aésernbly, the number in this'éolumn denotes the figure of the next higher assembly. For all subassemblies, the number in this coiumn denoles the lugure showing additional fication, provides a means for the user to identify the next higher assembly item and make alternate selections for parts when the reaulred replacement part ol assembly lS not o » lmmedlateiy avaulable e o ‘ detalled breakdcwn e | pAm- nuueea/pmr bescmmeaa SORT SECTlON be B eV Parts are;sortéd both numerically: ahg: alphabetically by _COLUMNGALLOUT DESCRIPTION Flgure and lto”m}' IAdicates the flgure number and item .desc'.rlptlon referenced to a location wltmntbe IP8, by figure number and ltem number ¢ . ., RN N . R . . A . LPRINTING. . " 4 el .‘;,'. .'.-‘A': " -, .- < R - ' y ‘X Ve N4 ecoLEVEL 00000-00000 ! R ;’5‘ ’ ! v?x“) < , . ed 7). w ] . DATE N v’fi;‘ 'l( * ... . K oo MY .. . - REVISION HISTORY 7w 1st Printing |RV20-P . ’ ,v , N . y pAM ,‘L ;' ,; R ‘e Y I T 2 it . . ‘.3:,,-' ; Tt al 1 e " K, f,’ v EL ) C :T\l('"" N &'-. i.:i. . . T JN»~w¢.r‘ . ,,,,, R o e 'f'i rate D\pul Eqmpmem Corporauon reserves the right. wuhout notice, to make substitutions and modificationsin the specifications of products documented .. in this manual and further reserves the night w0 withdraw any of these prbducu fi'bm the market without notice. LS - -Copynihiol9fi fi%Dinu‘lEqmpmm Corporation. All nghu resmcd. ll'. 7 - }f, IR ..AL SR P vl —— Dlgml Equlpmem Corporation is not responsible for errors which may ! appear in the technical description ( including illustrations and photograpiis) ~'of the products covered by this manual None of the descriptions containedin this manual imply the granting of any license whatsoever to make, use or sell equipment constructedin accordance therewith. Printed n U.S.A. Wiberei+Teevo.)YTPFTT-.&fi\.«wus$+ PorY.--.AotLL0 . AetBte¢BTNSi w-ioyYatageP2R5T.-fvgkyY.e.bfl»so~yLs.iheod---.iseSRSotbSfs]4.eParee5TRTt) [%k Ai3 SAmeTR‘eesAP0oeyXVKI2FeRyéAyAlIboFtBN - v o P ’ . b # 'y 13 -- % -. "EA ;9. .n uK > . ;v . 4f i\\ Ear .. i; Sl12Y 13gts e<B-Lw io5Nb P--Resldv LRULR - eN ki [ B TbR UERFIE ir (SRS PR3 Bt ) 3W]R ALEASA - YR - . b m&JX eaeoAzPa IT i - . ¥."y.TAR -iy tev-Do' N, .W PNSe-2B .. R 3 Y .L ¥ i 3 .. i TyWiIlR4D7ELWedeKo%nipa%]DoFon - ‘.L31tens<J.e.-ySelbr[_rRe ¢..-'y.eeR3g»e.oT‘SOtLS efaee t -e >s 7,: i pSst 5 Ly o+ [4 4 %, 3%. JNl dlijgitall PARTS LIST RV20P-01 Figure 1. RV20-P Optical Disk Drive Subsystem (Sheet 1 of 4) IPB-RV20 a1 PARTS LIST 13 RV20P-01A Figure 1. RV20-P Optical Disk Drive Subsystem (Sheet 2.0f 4] IPB-RV20 dligl [tall PARTS LIST £ w \.“ . = - -t . . . T v T N e * ~ Y Bt AS SHOWN & = - v i L * R et P . N § - el N o T R N . BC17Y CABLE REF. FIGURE 2 T i : RV20P-018 Y% Eiqure 1. RV20-P Optical Disk Drive Subsystem (Sheet 3 of 4) t : 3 IPB-RV20 T AT cerdad VRS IR T B 708002, i 21 FARTS LIST EXISTING E RV20-PG/PH or & i RV20-PV/PW AS SHOWN N e e s ‘o ) i « oiNAyo F s-, AP Ge Aoz P b= L >~ L T PP ¥-g.i -SL: %3 4vdo kTA£ bl3ebfpetae-eeeo-l eBeLNU & et o o -4 & * -t "BC17Y CABLE S 1 e ER - REF. FIGURE 2 e . IPB-RV20 . ' Figure (4 Lok Lot et Vi ".1 3 [ " g7, Gl -1 ELm e Y ;fK * . . e - < R. L »- [. . S ~4 Y T A - - [4 . - Q: . y 1. RV20-P Optical Disk Drive Subsystem (Shéé; »4' df 4) S R e DESCRIPTION DEC USED ON PART NO. CODE Code A — Used on Model RV20-PA Code B — Used on Model RV20-PB . Code € — Used on Model RV20-PC Code D — Used on Model RV20-PD RV20-PA 'RV20-PB RV20-PC RV20-PD Code E — Used on Model RV20-PE Code F — Used on Model RV20-PF Code G — Used on Model RV20-PG Code H — Used on Model RV20-PH J — Used on Model RV20-P Code | Code K — Used on Model RV20-PK RV20-PE . Code M — Used on Model RV20-PM “ Code N'— Used on Model RV20-PN RV20-PM | RV20-PF RV20-PG RV20-PH RV20-PJ RV20-PK " ‘Code L — Used on Model RV20-PL RV20-PL RV20-PN CodeP~- Used on Model RV20-PP 1-. Code R- Used on Model RV20-PR |- Code S =Used on.Model RV20-PS RV20-PP Code U- Used on Model RV20-PU RV20-PU “’che W — Used on Model RVZQ-PW RV20-PW RV20-PR RV20-PS "Code-T -Used on‘Model RV20-PT RV20-PT | #'Code V — Used on Model RV20-PV RV20-PV N “. “*Frame, 40 Inch w/o Interlock _*RV20-A MASTER RACK MOUNTABS;.E DRIVE | *RV20-B SLAVE RACK MOUNTABLE DRIVE 70-23213-02 30-27256-02 30-27256-01 *Power Controlier 60 Hz R H874.0 ) l"Power ControHer50 Hz s HB74-E ‘ ~~»?F3eta|ner U Nut NQ 10-32 ’Screw Seh‘Tappcng Truss Hd No} 10-32 x 1/2 ;’MeuntmgWeldment Bustle Door | *Screw, Sems HexSiot-No. 1/4-20 x.3/4 *Scréew, Sems Phl Pan Hd No. 10-32 x 5/8 *Bezel Assembly, 10.5 *Bezel, Plastic, Kick-Plate - o *Screw, Phi Pan Hd No. 10-16 x 5/8 *Washer, Split Lock *Cable Tie Mount, Adhesive Back . *Cable Tie, Bundle 90-00063-39 70-23121-01 74-21903-00 i e MP PSUW 74-22244-00 12-21368-02 70-22137-01 70-22472-02 *Door Assembly, Bustle (3 Hi Cab) *Bezel Assembly, 5.25” COFHKM 74-37240-02 *Panel Assambly, End *Cover, Top ABEGJL NRTV 90-09988-14 'Bragket Asseribly,’'Receptacle, Left *Bracket, Rear Vent Support 90-07786-00 BCEFGH RSTUVW 74-37240-01 *Bracket Assembly, Receptacle, Right @Bracket Retainer Trim S<CH0WV$IVIZIrRCITOTMMOO®Pp RV20-P OPTICAL DISK DRIVE SYSTEM H9544-LA 70-23905-01 | ABCDEF JKLMRS 70-23906-01 74-33251-01 90-09573-00 90-07906-00 90-08264-00 90-07032-00 1PB-RV20 ECO FIG. & DEC ITEM DESCRIPTION PART NO. 70-23519-01 23 *Bracket, Chassis Assembly 24 *Bracket, SDI Interface 74-32005-01 *Cable Clamp, Screw Mounted 90-07088-00 25 26 27 *Standoff, Male/Female No. 10-32 x 2 90-00001-22 *Screw, Sems Hex Slot No. 10-32 x 1/2 90-09988-05 LABELS (Not Shown) *Label, ‘‘Serial/Power, Made in USA" *Label, “FCC, Class A, Peripheral” *|abel, “Caution, Stability RA81" IPB-RV20 36-17674-01 36-17880-03 36-20554-01 CUT-IN RV20-P USED ON CODE REF FIG )LPESnWwe"4y-eTyeysABe LoNsS-| e ClnIl RN P-RISARB .- L .. etW.CdeE ) { 3 i { RV20-A/B DISK DRIVE OPTICAL h) . . . o A ., - . ; t |, o- ;. . | ~ - ‘_ , ki I'd . . i ] -~ ) PARTS LIST RV20P-02 Figure 2. RV20 Optical Disk Drive System— Major Assembly Locator IPB-RV20 ECO Fl&G ITEM DESCRIPTION VENDOR DEC PART NO. | PART NO. CUT-IN Rv20-P REF |USED ON| FiIG CODE RV20 OPTICAL DISK DRIVE — MAJOR 2—- ASSEMBLY LOCATOR RV20-A SINGLE MASTER DISK RV20-A RV20-B SINGLE SLAVE DISK SUBSYSTEM 50/60 Hz RVv20-8 SUBSYSTEM, 50/60 Hz 1 2 | *Printed Circuit Assemblies 4,5 75112015 *CARD RACK ASSEMBLY 3 | "BASEPLATE ASSEMBLY 4 | *Maintenance Panel Assembly BCEFGH RSTUVW ‘ 5 | *BEZEL ASSEMBLY, FRONT 6 | *Power Supply Assembly, DC 75115027 29-26434-00 75115248 ' 29-26430-00 75110002 30-27662-02 29-26458-00 29-TBA—— | 29-d68oo] o ¢ BC17Y-20 4,6 4 4,8 4 ACCESSORIES 7 | *Optical Media Cartridge, (RV02K-01) 8 | "Terminator Assembly (ISI) ' 9 | "Cable, ISI Interface, 7° ) 10 | *Cable, LES! (Not Shown) IPB-RV20 8 R dig tla ) PARTS LIST 7 RV20P-03 Figure 3. Chassis Assembly IPB-RV20 ECO FIG. & ITEM 3- DESCRIPTION VENDOR DEC PART NO. | PART NO. CHASSIS ASSEMBLY 1 | *Chassis, Side 2 | "Chassis, Rear 3 | *Chassis, Intermediate 4 | "Chassis, Front 5 | "Screw, Metric Pan Hd M4-10 6 | *Chassis, Bottom Cover 7 | "Washer, Lock, Dome 8 | *Cover, Top Rear 9 | *Cover, Top Front 10 | *Screen, Left 11 | *Stiffener, Front Member 12 | *Screen, Right 13 | *Nut, Push On, .125 Dia Snd 14 | *Washer, 15 | *Screw, IPB-RV20 75114337 75114333 75114335 76114331 75119161 75112000 15424292 75112001 75112002 75112055 93530790 75112054 93539003 TBA TBA 10 S —_— _ —_— CUT-IN USED ON CODE REF FIG ) digiltla PARTS LIST PART OF ITEM 21 PART OF ITEM 21 RV20P-04 \ Figure 4. Unit Assembly 11 IPB-RV20 DESCRIPTION VENDOR DEC PART NO. PART NO. UNIT ASSEMBLY, 50 Hz, 60 Hz 1 | *Chassis Assembly 75115028 2 | *Power Supply Assembly, DC 3 | *CARD RACK ASSEMBLY 29-26430-00 75112015 4 | "BASEPLATE ASSEMBLY 75115027 5 | *Screw, Pan Hd, Lock, M4-8 8 | *Stiffener, Front Member 75119159 75114339 7 | *Stiffener, Intrmdt Member 751120860 8 | *Bracket, Cable Hold 75112051 9 | *Fan Assembly, Tube Axial DC 10 | *Retainer, Fan 1 *Nut, Hex, M4 x 12 12 | *Spacer, Shock Mount 13 | *Washer, Snubbing 14 | "Mount, Resilient 15 | *Mount, Resilient 16 | “Screw, Washer M4-10 17 | *Cable, Power Supply Signal 18 | *Harness, Power Supply Voltage 19 | *Cable, Internal Power Assembly 20 | *Screw, Pan Hd Star Washer M4-10 21 | *"BEZEL ASSEMBLY, FRONT (See Note) A 29-26455-00 75110941 75119161 75111155 75110049 15423738 15423739 15429160 29-26443-00 75115034 75119122 29-26442-00 75115248 22 | **Fiiter, Grill 29-26454-00 23 | *"Filter, Air 30 PPI 29-26448-00 24 | *1/0 PANEL ASSEMBLY 25 | *Cable, Main Power 29-26461-00 — 29-26446-00 - 26 | *Trough, Front Cable 75112043 29 | *Maintenance Panel Assembly —_— 29-26434-00 31 | *PCA, Operator Panel 32 | "Lens, '‘Start/Stop”’ 33 | *Lens, ‘‘Write/Protect” —_— —_— _— 29-26438-00 29-26452-00 29-26453-00 27 | *Trough, Rear Cable 28 | *Cable, Maintenance Panel 751156229 75110770 30 | *Cable, Operator Panel S 34 | *Lens, 'Power Indicator’’ IPB-RV20 _ 12 29-26441-00 TBA USED ON CODE dgtla ) PARTS LIST - th0fl el)=V- N A S RV20P-05 Figure 5. Card Rack Assembly 13 IPB-RV20 F I&G . ITEM DESCRIPTION NO. VENDOR PART NO. ECO DEC cUTN USED ON .F:.EGF 29-26459-00 A PART NO. CODE CARD RACK ASSEMBLY 5— 1 | *PCA, DRIVE SUBSYSTEM | Controller RV20A —_— 2 | "PCA, ECC 3 | *PCA, ISI 4 | *PCA, Servo/Drive Control 5 | *PCA, Modulator Demodulator Synchronizer | ————— —_— 6 | *PCA, Read/Write Control 7 | "PCA, Servo Systems 8 | *PCA, Error Signal Generator 9 | *CARD RACK ASSEMBLY 10 | "Plate, Nut *Plate, Bar 1 12 | *Screw, Metric Mach Hd w/ Split Washer 13 | *PCA, Backplane IPB-RV20 S 75112015 75111335 ‘ 75111281 75110936 14 29-26429-00 29-26427-00 29-26435-00 129-26439-00 129-26428-00 29-26437-00 29-26436-00 29-26460-00 NO. dilg [t ) PARTS LIST RV20P-06 Figure 6. Baseplate Assembly (Sheet 1 of 7) 15 I‘PB-RVZO dig!tla ) PARTS LIST RV20P-06A Figure 6. Baseplate Assembly (Sheet 20f7) IPB-RV20 16 dig) tla ) PARTS LIST RV20P-068 Figure 6. Baseplate Assembly (Sheet 3 of 7) 17 IPB-RV20 g‘é 25 a1 PARTS Llsg RV20P-06E Figure 6. Baseplate Assembly (Sheet 4 of 7) IPB-RV20 18 2020080 PARTS LIST RV20P-06F Figure 6. Baseplate Assembly (Sheet 5 of 7) 19 |PB-RV20 dditla ) PARTS LIST 25 —38 RV20P-06G Figure 6. Baseplate Assembly (Sheet 6 of 7) IPB-RV20 20 flfl@lflflfl> PARTS LIST pETALL [ RV20P-06J Figure 6. Baseplate Assemb/y (Sheet 7 of 7) 1 ~ 21 IPB-RV20 - | Fl&G. ECO ITEM NO. 6— DESCRIPTION VENDOR DEC PART NO. | PART NO. CUT-IN USED ON ?ch; CODE BASEPLATE ASSEMBLY 1 | "Baseplate 2 | *Magnet Motor Positioner Assembly 3 | *Carriage Assembly 75114341 75111102 4 | "Rail, Upper Carriage Guide 75110802 S | "Rail, Lower Carriage Guide 6 | "Trough, Flex Cable 7 | "Screw, Pan Hd Lock M4-12 8 | *Screw, Pan Hd Lock M4-8 9 | "Screw, Pan Hd Lock M4-16 10 | *Washer, Flat M4 11 | *Carriage Interlock Assembly 12 | *Spacer, Sleeve 13 | *Plunger, Tip Mount Carriage Interiock 14 | *Plunger, Tip Carriage Interlock 15 | *Screw Lock Washer Assembly Pan M4-10 16 | *Guardband Sensor Assembly 17 | *Screw, Pan Hd Washer M2-8 18 | *PCA, Baseplate Terminator (ISl) 19 | "Screw Asseambly, Washer Pan Hd M4-10 20 | *Pin, Cartridge Guide 21 | *Clamp, Plate Mounting Loop 22 | *Tie Strap, Electrical 23 | "Support, Flex Cable \ 24 | *Clamp Loop ' 25 | "Spindle Assembly 26 | "Torque Tube Assembly 27 | *Door Lock Solenoid Assembly 28 | *Cable, Ground Strap 29 | *Screw, Pan Hd Starwasher M4-10 30 | *Clamp Loop 31 | "Motor Assembly, Spindle DC 32 | *Pulley, DC Motor, 60 Hz 33 | "Pulley Insert 34 | *Screw, Pan Hd Lock M2-56 35 | "Washer, Shouldered, Non-Metal 36 | *Belt, Spindle Pulley Flat 37 | "Cover, Motor 38 | *Adaptsr Hub 29-26426-00 75110803 75110812 75119161 75119159 75119162 91975616 29-26469-00 75114379 75114382 75114380 15429160 15423384 75116011 756119160 76111047 15424310 94277400 75110843 15423715 ~ 75111287 75111054 75119122 15423720 75112019 15423061 15423648 75110604 39 | *Door Detent Assembly 40 | *Tachometer Sensor Assembly 75110867 43 | "Washer, Snubbing 44 | "Mount Resilient 45 | *Mount Resilient 75110049 15423738 15423739 41 | *Screw, Pan Hd Lock M4-8 42 | "Spacer, Shock Mount 75119159 75111155 46 | "Guide Assembly, Right Lower Cartridge 47 | *Guide Assembly, Left Lower Cartridge 48 | *Guide, Left Upper Cartridge 49 | *Guide, Right Upper Cartridge 75111398 75111397 75111109 75111107 IPB-RV20 : 22 29-26433-00 29-26457-00 29-26425-00 : 29-26456-00 29-26431-00 29-26447-00 29-26424-00 29-26451-00 ' 29-26432-00 1 DESCRIPTION 50 *Pin, Cartridge Locating 75111046 51 75111334 53 *Cable Asssmbly, Internal Power *Link Roller *Link, Cartridge Door Right 75111332 55 *Spring, Door Link, Right *Spring, Door Link, Left 75111392 52 56 87 *Link, Cartridge Door Left *Bushing, Pivot 58 *Bumper, Right Upper Cartridge Guide 59 *Brush, Spindle Grounding 61 *Cable, Terminator Signal (P21) *Capacitor, Retract *Screw, M3 x 0.5 63 *Clamp, Capacitor DEC USED ON PART NO. CODE 75115034 75111393 75111333 75110609 75110934 29-26476-00 29-26445-00 75115228 15423434 92466006 29-26440-00 *Bearing, Spindle 23/24 IPB-RV20 ) PARTS LIST RV20P-07 Figure 7. 1/0 Panel Assembly 235 1PB-RV20 DESCRIPTION 71— VENDOR 29-26461-00 1/0 PANEL ASSEMBLY 1 | *Cable Assembly, Internal 1/0 2 | "Washer, Split Lock M4 3 | *Washer, Flat M4 4 | "Washer, Shouldered Non-metal 5 | *Screw, Pan Hd Machine M4-20 6 | *Panel, I/0 Std 7 | "Plate, Electrical Shield 8 | *Harness Assembly, Terminator 9 | *Bracket 10 | "Bail *Nut, Plain Hexagon M4 11 12 | *Ground Strap, Rear Panel External 13 | *Screw, Pan Hd No. 4-40 x 3/8 14 | *Washer, Lock Spring No. 4 15 | *Washer, Flat No. 4 16 | *Cable, LESI IPB-RV20 DEC PART NO. | PART NO. 91975691 29-26462-00 91975616 15423648 91976749 75114579 15423871 —_— 75118837 75118839 91975740 91743086 93225203 09027903 —_— 26 29-26444-00 29-26450-00 ' 29-26463-00 USED ON CODE 2020080 PARTS LIST RV20P-08 Figure 8. Bezel Assembly, Front 27 IPB-RV20 DESCRIPTION | BEZEL ASSEMBLY, FRONT 1 VENDOR DEC USED ON PART NO. PART NO. CODE 75115248 | "Bezel, Front 75114995 2 | *Lens, Front Bezel 75114534 3 | *Door, Bezel 75114997 4 | °Seal, Clad Urethane Foam 75115486 5 | "Seal, Clad Urethane Foam 75115485 6 | "Retainer, Filter Grill 7 | "Washer, Flat Metric 75115365 15423191 8 | "Screw, Captive 75110942 75110937 9 | *Spring, Filter Grill 10 | *Latch, Filter Grill 11 | *Cover, Door Handle 75118375 75115304 12 | *Filter, Air 30PPI 13 | *Grill, Filter 2,4 29-26448-00 _— 29-26454-00 75115556 75115557 29- TBA Decals (Not Shown) *Decal, ''Operator Panel" *Decal, ''Control Unit I.D." IPB-RV20 28 RV20/RV20-P" lliustrated Parts Breakdown EK-RV20 P-P-001 READER’'S COMMENTS - Your comments and suggestions will help us in our efforts to improve the quality of our publications. How did you use this manuai? (Circle your response.) Why? r Unacceptable 1 b O v OOy Table of Contents, Index lllustrations, examples Overall ease of use v Completeness Fair WWWwWLWWww Good A‘Ah«hhh Excellent NNNNNN§ 3. Please rate the manual on the following categories. (Circle your response.) —h No O —d Did the manual meet your needs? Yes O ok 2. (e) Training (f) Other (Please specify.) (c) Maintenance (d) Programming (a) Installation (b) Operation/use — 1. 4. What things did you like most about this manual? 5. What things did you like /east about this manual? 6. Please list and describe any errors you found in the manual. Description/Location of Error Page Name Job Title Street Company State/Country Department Telephone Number Postal (ZIP) Code Date City | THANK YOU FOR YOUR COMMENTS AND SUGGESTIONS. Please do not use this form to order manuals. Contact your representative at Digital Equipment Corporation. or (in the USA) call our DECdirectTM department at this toll-free number: 800-258-1710. ¢ 1987 by Digital Equipment Corporation. MYO ——__—._—_.—-.—.—————-——-—-—---“¢ _-———-——-—-——._.—_—.———-,——_——.—-———-——-.— dlilgliltlall N —— — —— — S - S — “\“ BUSINESS REPLY MAIL FIRST CLASS PERMIT NO. 33 MAYNARD. MA POSTAGE WILL BE PAID BY ADORESSEE DIGITAL EQUIPMENT CORPORATION Educational Services/Quality Assurance 12 Crosby Drive BUO/EO8 Bedford, MA 01730-1493 USA —*-*————~-—_—-H_“- —-——H-——--—_-———-~—_-“—-‘-—- FOLD HERE AND TAPE. DO NOT STAPLE. No Postage Necessary if Mailed in the United States
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