Wyse WY-100 Maintenance Manual Download Page 36 | Manualshive

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Summary of Contents for WY-100

Page 1: ...WY l 00 Display Terminal Maintenance Manual WYSE I I I I...

Page 2: ...WY 100 DISPLAY TERMINAL MAINTENANCE MANUAL Wyse No 88 009 01...

Page 3: ...No TitLe 88 003 01 WY 100 DispLay TerminaL Reference ManuaL TRADEMARKS WY 100 is a registered trademark of Wyse TechnoLogy COPYRIGHT NOTICE Copyright 1982 84 Wyse TechnoLogy ALL Rights Reserved WorLdw...

Page 4: ...s or fitness for any particuLar appLication are discLaimed The specification and information are subject to change without prior notification The right to revise this document without obLigation to no...

Page 5: ...Page iv...

Page 6: ...and Data Buffer 1 7 Video Circuits 1 8 CRT ControLLers 1 8 Dot Clock and Dot Serializer 1 10 Character ROM 1 10 Attributes Synchronization and Generation 1 11 Asynchronous Communications Interface 1...

Page 7: ...r and Description Keyboard PCB 99 003 01 REV B Part Number and Description Monitor PS PCB 99 002 01 REV T Part Number and Description Monitor Power Supply PCB ASSY 99 002 02 REV N Monitor Power Supply...

Page 8: ...nitor Power Supply 99 002 03 Schematic D ag ram E 6 E 7 Block Diagram for Troubleshooting F 2 No Power Troubleshooting Flowchart Part 1 F 3 No Power Troubleshooting Flowchart Part 2 F 4 No Power Troub...

Page 9: ...contents 4...

Page 10: ...munication interface does seriaL to paraLLeL data format conversion provides baud rate generation and controL signals for an RS 232 modem port and a serial printer port The keyboard interface is the l...

Page 11: ...J2 9 J2 10 J2 11 J2 12 logic board module 1 2 Signal Name GND AA TXD BA RXD BB RTS CA CTS CB GND AB oeD CF 12 V 12 VA DINRET DOUTRET 12 VA 12 V DTR CD Signal Name PGND PRXD PGND Description ShieLd Gr...

Page 12: ...3 5 V 5 V J3 4 SCAN 2 Scan Line 2 J3 5 SCAN 1 Scan Line 1 J3 6 SCAN a Scan Line a J3 7 SCAN 3 Scan Line 3 J3 8 SCAN 5 Scan Line 5 J3 9 SCAN 6 Scan Line 6 J3 10 SCAN 4 Scan Line 4 J3 11 KEY IN Key Inpu...

Page 13: ...l memory access instruc 2B 3B 88 and during I O ports P10 through P16 are used for outputting row and column addresses during keyboard scan P17 is a beLL enable signal It is used by the microprocessor...

Page 14: ...I n CT o III a 3 o a c r eo I VI CONTROL 8276 LOGIC I __ CRT CNTRLR 1 VIDEO CIRCUITS 8276 CRT CNTRLR VIDEO I HRT I VRT Figure 1 IOOIC OOAID BUXI DIJGWol 2651 UART IBUFFER J 1 RS 232 MODEM PORT PRINTE...

Page 15: ...E 150ms I I 2 0 0 m s Oms 70ms h 7 7 jX ADDRESS XT 17 lX _ Iol OPA L CTA I IOi IJ JUT_ _ JX DATA I N 1ZT17 u 350 ms QID1 _____________ 4_8Q __ ID S_____________ 40ms 160 IDS P23 P20 P2HiQX A ll A 8 XP...

Page 16: ...x 4 static memory components 6A 13A external to the processor It is accessed by the processor to refresh the screen and to update the text The lower address lines are Latched by an 8 bit Latch 3A on...

Page 17: ...e processor for setting timing parameters It is aLso used to reset the J K fLipfLop SE after each character row refresh BRDY is an interrupt request signaL asserted by the 8276 7B at the beginning of...

Page 18: ...HARACTER L 77 xy AL ID 0 ff ff 2 C ROM 275 ms ATTRIBUTE i 7 Z 7 7 dA____ _ _ VA U D 77 0 ________ CODES Figure 3 oor VIDED T IMJN CHARACTER CLOCK r CCLK 54 1125 ms 0 HDR 60 Hz fl ms j S IC n 16 6666 m...

Page 19: ...since each character celL is 10 dots wide It aLso provides the appropriate timing signal to reload the dot serializer 70 with the next character pattern and to reinitiaLize itself The dot serializer 7...

Page 20: ...are centered around the 2651 UART 4B This chip performs the seriaL to paraLLeL data con version for RS 232 data communication as weLL as detecting parity framing and overrun errors In addition signaLs...

Page 21: ...Logic board moduLe 1 12...

Page 22: ...n Assignment J 5 1 J5 2 J5 3 J5 4 J5 5 J5 6 J5 7 J5 8 J5 9 J5 10 J5 11 SignaL Name GND GND 5 V SCAN 2 SCAN 1 SCAN a SCAN 3 SCAN 5 SCAN 6 SCAN 7 KEY In 3 0 fYH QHAb 2s e QH Description ShieLd Ground Si...

Page 23: ...ID IV I IV ADDRESS FROM LOGIC BOARD ADDRESS FROM LOGIC BOARD 4 COLUMN ADDRESS 3 ROW ADDRESS COLUMN DECODER 16 V KEYSWITCH MATRIX 128 Positions 8 LV 1 ROW SELECTOR Figure 5 KEYIDAm BUXX DnGRl M OUTPUT...

Page 24: ...DIP switch is cLosed and its row and column position is selected by the code presented on J5 4 through J5 10 a Logic 0 is fed back to the Logic board on J5 11 3 3 KEY SWITCH MATRIX The keyboard has 10...

Page 25: ...keyboard module 2 4...

Page 26: ...m and Figure D 2 Circuit Diagram 230 VAC AC CORD FUSE 115 VAC 1A 230 VAC 0 5A AC CONNECTOR 1 I 1 I ON OFF SWITCH 94 006 01 80 160 02 2 BRIGHTNESS _____ J CONTROL 94 007 Oil M e affffr m V YOKE __ iR 9...

Page 27: ...is This pcb contains the power suppLy horizontaL and verticaL defLection circuits and the video circuits of the terminaL 4 1 5 VOLT SUPPLY This circuit consists of U2 see Appendix G Q2 and other mis c...

Page 28: ...oLtage of the video us is an integrated vertical defLection circuit see Appendix G A verticaL drive signaL is provided by the Logic board assembLy at pin 7 J4 This signal provides the vertical synchro...

Page 29: ...r attached to two insulated wires connected to the AC power connector and the ON OFF switch mounted on the termi nal chassis By connecting these two wires to pins 3 and 5 first and third pins from the...

Page 30: ...pins 3 and 20 of the printer D connector c Set aLL the switches of the Left most DIP switch to a 0 or OFF position 8 Turn on the terminaL again setting the ON OFF switch at approximateLy the fuLLy cL...

Page 31: ...d to the required orienta tion on the screen 2 Attached to the yoke are two concentric magnet rings each with its own adjustment tab By rotating these two magnet rings the dispLay can be centered on t...

Page 32: ...02 1 80 930 00 1 80 930 01 1 80 900 30 Description 2114L 1K X 4 Static RAM 8039 Microprocessor 8276 ControLLer 2651 USART Program ROM EROM 2732A Character Generator ROM 2716 1 74LSOO 74LS02 74LS04 74L...

Page 33: ...tor 10K ohm 1 4W Carbon FiLm Resistor 680 ohm 5 1 4W Carbon FiLm Resistor 25 Pin P Connector 12 Pin Header 0 156 Center 10 Pin Header 0 156 Center 24 Pin Socket IC 28 Pin Socket IC 40 Pin Socket IC D...

Page 34: ...II _____ TCI7 H O 6 tI l I Figure A f LOGIC CIRCUIT DIAGRAM I I I I if 8 c I I 1 WYSE TECHNOLOGY lIw t If j l t 1 J 1 Wy 100 LOGIC CIRCUIT DIAGRAM 2 18 82 Qb 004 01 REV E appendi x A 3...

Page 35: ...ITEM 0 l u o s DRAWN 4 rIY SETECHN0 LOGY 4 t oc g i t CH ECII ro SUlfN IIOUC CE TITlE 9q 004 r I o c io 1ft C A 1 4 _ t r rs n NG ER 2 23 LOA DI JG DlAG RA 1 UI OIO 1000 eft elm MANUf CTUR I NG SC A...

Page 36: ...01 14 1 80 800 01 15 88 50 015 01 16 9 80 900 08 17 2 80 900 02 18 1 80 930 09 19 3 80 920 07 Description FAB PCB DIP Switch 8 Pos IC MC14051B IC LM339 IC 74LS156 Conn 12 POS Diode IN914B Frame KB Key...

Page 37: ...i5 3 11 0 I 0 O 1 v IS C CI 74I SI 1I 6 r 35 5 1 IS s ll It 35 1 t _ J7 f 0 r s v 4 tJ J t v 4 I Q 0 SV 1 3 4 It l __ t e III 4 J Sl J e rt n v A 2 4 k n e_ rc i j sv 4 4 n Figure B 1 KEYBOARD SCHEMA...

Page 38: ...CT lUU rlfllSE rv 1 SDM s CO EIMtI U v 1 n D ou f l r I L I 0 1r _r L _T _ C t t s t Z V l M SM f w f Vfilc T J I o Figure B 2 KEYBOARD LOADING DIAGRAM 9 I I l I I I 5 I 3 f WYSE LOADING DIAGRAM t I...

Page 39: ...BU407D Horizontal Deflection IC INS401 Diode LM723C Voltage Regulator IC MC7812 CT LM340T 12 MC7912 CT LM320T 12 2NS830 Transistor PN2222 TIP 120 IN914B Heat Sink TDA 1170 Flyback Transformer Lineari...

Page 40: ...ctrolytic 220uF 25V Capacitor ELectrolytic 47uF 25V Capacitor Electrolytic 0 1uF 100 V Metalized Polyester 0 22uF 400V Metalized Polyester 0 022uF 400V Metalized Polyester 10uF 100 V Metalized Polyest...

Page 41: ...5 R17 R19 R21 Resistor R28 65 1 80 900 21 150K ohm 1 4W 5 R16 Resistor 66 1 80 900 22 270K ohm 1 4W 5 R8 Resistor 67 2 80 900 23 470K ohm 1 4W 5 R6 R7 Resistor 68 1 80 900 06 1 6K ohm 1 4W 5 Rework ba...

Page 42: ...1 2 IIY h J 17r L 11Z I 1 o 011 JIII o OQa cao o C31 2 1 JM1_ _ o I Aprl INS IALATION PAl 80 0 02 To i Q ACH Q2 i A J K i A APPJ 1 NYl orJ 1 sv lloN p S NG To 51 S3 T b EACH A80 1 Q J Q AtJD a SoJ b S...

Page 43: ...1 o z i o 0 V o s m 0 en C V V r 0 0 I o o N SO I o en n J m 3 i n b o lo I iRS ol T L 002 c R R V SoH e o 0 I R S 1t lOOV uS o V Col J S 1coU 2 5 v Q l l 96 00 o 2 V Wt Se TECijA OLOG Z T O V n R cvN...

Page 44: ...M7812 IC LM7912 Transistor PN2222 IC BU407D IC TDA 1170 Transistor 2N5830 Rectifier VARO VS048 CoiL Width Adjustment CoiL Linearity Transformer Driver Transformer FLyback Choke 6 8uH 100mA Capacitor E...

Page 45: ...hm 1 4W 5 R413 Resistor 40 1 80 900 11 3 3 ohm 1 4W 5 R412 Resistor 41 1 80 900 12 47 ohm 1 4W 5 R301 Resistor 42 2 80 900 13 68 ohm 1 4W 5 R304 R414 Resistor 43 2 80 900 14 220 ohm 1 4W 5 R602 betwee...

Page 46: ...1 4W 5 Resistor 200 ohm 1 4W 5 Resistor 1 2 ohm 4W 5 Resistor 15 ohm 1 2W 5 Resistor 120 ohm 1 2W 5 Resistor 11 ohm 1 4W 5 Resistor 120K ohm 1 2W 5 Resistor 680 ohm 2W 5 Resistor Connector 9 Pin Conn...

Page 47: ...3 A CYIONH J3 L 1a m o o o o CI o o o o o appendix D 4 N 1 3H lQ lQQ 66 o E a CD c CD Z c o J N o I N o o I 0 0 J Q Q en a w 3 o Q a o I Z o E r a V...

Page 48: ...1 r r 6 14 OKE I 1170 R5 IaDI t t T l W It I I I I I I If I I i I i I Ic I i Norf ALL RES15T t RS AR y w Xc P THO iE DEN OTE1 I j CIF CUIT DIAGRAM I I I l iWYSE TECHf JOLO JY C 6 0r 02 REV N I _ l _ _...

Page 49: ...70 N Transistor TIP120 Transistor PN2222 Transistor BU406D Transistor BF459 Transistor BF257 Transistor BSX 20 Diode RGP5100 Diode BY 398 Diode BR 851 Diode IN4002 Diode IN4148 Diode ZENER 6 2V 5W Dio...

Page 50: ...0 20 68K ohm 1 4W 5 R313 Resistor 40 3 80 900 35 100K ohm 1 4W 5 R209 R210 R220 Resistor 41 1 80 900 35 200K ohm 1 4W 5 R304 Resistor 42 1 80 900 65 220K ohm 1 4W 5 R305 Resistor 43 1 80 900 22 270K o...

Page 51: ...apacitor ELectroLytic C205 6 8mF 25V 70 1 80 930 11 Capacitor ELectroLytic C310 10mF 25V 71 1 80 930 17 Capacitor ELectroLytic C210 22mF 160V 72 1 80 930 01 Capacitor ELectroLytic C216 47mF 25V 73 1 8...

Page 52: ...MP 1mF 250V C305 C307 C308 5 C309 C203 C211 C213 C303 90 1 80 940 10 Capacitor PP 033mF C204 200V 5 91 1 80 120 23 Conn Lock 3P J5 MoLex09 74 1031 92 1 80 120 04 Conn Lock 4P J4 MoLex09 74 1041 93 1...

Page 53: ...l 1112 1104 mL e o f l _ J l T 1 __ 1102 11102 0 0 iO V LIN 0 V HOLD 7 V H IGH fOCUS IIIGMT I 7 2 Vl203 VUOI V VI303 VI30 1222 VI301 1304 _1 lIT II fg I am I g I _I u C204 lc12o 1202 0 lT Y e201 Vc20...

Page 54: ...TION D4TE IIPPROVED R l 1_ r_ __1 VP 203 FOCUS i 4PPFlOV4LS DATe 1 M4TEIIIAL DFlAWN H 5H N R c MOi ITCR T H A J t 94 004 0 I 6i E L_ J6 P6 U o 0 I WYSE TECHNOLOGY t Wy 100 200 MONITOR PS 1 1CHECKED _...

Page 55: ...a there are differences troubleshooting moni 99 002 02 Monitorl similar design but Troubleshooting to the component level is not supported by Wyse Technology These flowcharts are designed only to ass...

Page 56: ...2 01 Pea ss l303 ISPLIly M MO e y I IDI O CONTIIlOL L A 82 7 VII O SltScN S Z POwE MONITOA POlNE SUpp Y c i1E IdoARP INTC F ACC IfEYdOAFfD Figure F 1 BLOCK DIAGRAM FOR TROUBLESHOOTING r DISPLAY It J 1...

Page 57: ...NO v e O NO IAlSf e c r FUSe HOI Dc c ANi A c WIJC III r Fa BIC s SHolC T FVS 3L OWN e HE CK FoR SHO tT AT Q Ji Q lZ waN s ANi lIeAr SIN I Figure F 2 NO POWER TROUBLESHOOTING FLOWCHART PART 1 appendix...

Page 58: ...3 Ac o AT Q Z ZQ BASe TO I E TTOJC i i H C K FoR i k r S r G 3AL c e A r DIOD t3R perc 13 s Ar BAse 0 __ Q2 1 I C Iu m t iii 01 Jill r 5 I OJ 00 f J 1 3 Figure F 3 NO POWER TROUBLESHOOTING FLOWCHART P...

Page 59: ...NO 5 YES 50o Jl u k W J 0 n O Z Z 3t cr 8l Q J III l l 2 c r _ I R 7C r I _1____ __ _ Figure F 4 NO POWER TROUBLESHOOTING FLOWCHART PART 3 appendix F 5...

Page 60: ...I r N O NO H R rrsr CHEC Ii MIPS 80 4 0 OR AACI1ED rRAc E S REPAIIl AS N I11t l I i Figure F 5 NO VIDEO TROUBLESHOOTING FLOWCHART appendix F 6...

Page 61: ...11r IS r C r MIps 8oA i rotC CRACI i I ACES Figure F 6 NO BRIGHTNESS CONTROL TROUBLESHOOTING FLOWCHART appendix F 7...

Page 62: ...S5Allfl _ J iRe rEST J A CMO vI MIPS BoARD 0 5 500 n L I A S Tc 77 Q I r I I E CL6 Re n sr Id 1C I J I z 3 l 01 2 0 OJ lL l i Figure F 7 NO HORIZONTAL DRIVE TROUBLESHOOTING FLOWCHART appendix F 8 w 0...

Page 63: ...IIYSPE c r 1 1 S BoIt Folio C QAC I b r AlA Co so lit 3 x Figure F 8 NO VERTICAL DRIVE TROUBLESHOOTING FLOWCHART Q it v III I 11 2 0 z l k z appendix F 9...

Page 64: ...appendix F 10...

Page 65: ...Appendix G NOTICE Exact component specification must be obtained from the manufac turers data book appendix G 1...

Page 66: ...appendix G 2...

Page 67: ...eyboard connector 2 A B C Add Qtyl Assy 2 9 1 1 1 1 2 1 2 If REV B move the stake pin jumper from W3 to W4 If REV C cut the trace at W3 W4 If REV D the option cannot be the following components Descri...

Page 68: ...appendix H 2...

Page 69: ...logy 3040 North First Street San Jose California 95134 TWX 910 338 2251 Telephone 408 946 3075 Eastern Region 516 293 5563 Midwestern Region 313 227 5011 Southern Region 305 862 2221 Southern Californ...

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