Philips FIMI Page 20 Field Support Manual Download | Manualshive

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Summary of Contents for FIMI

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Page 3: ...ion is set The block which corresponds to the size to the title display pocket of the binder in which the publication is to be kept should be cut out and placed in the display pocket 1 1 1 a c c l l C 0 Jl s m T1 s c S e s 1 0 1 s a 0 c c I c __ Q Jl s m 9T1 s C s e ...

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Page 5: ...Field Support Manual Monitor 12 15 11 Fl MI PHILIPS Telecommunication and Data Systems PHILIPS ...

Page 6: ...hould any errors or omissions be discovered however or should any user wish to make a suggestion for improving this handbook he is invited to send the relevant details to CUSTOMER SERVICE DOCUMENTATION AND TRAINING P O BOX 245 7300 AE APELDOORN THE NETHERLANDS Copyright by N V PHILIPS GLOEILAMPENFABRIEKEN 1983 All rights are reserved Reproduction in whole or in part is prohibited without the writt...

Page 7: ...I I I I I I I I I PUB NO 12th I di git UPDATE PACKAGE SI NO PAGES DATE REMARKS I AFFECTED I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 2 I All 8305 Total revision and 15 version added I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I...

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Page 9: ...E 1 1 thru 1 7 2 FUNCTIONAL DESCRIPTION 2 1 thru 2 4 3 DETAILED DESCRIPTION 3 1 thru 3 6 4 DIAGRAMS 4 1 thru 4 3 5 LISTINGS not applicable 6 PARTS LIST 6 1 thru 6 21 7 MAINTENANCE 7 1 thru 7 6 8 WORKSHOP REPAIR 8 1 thru 8 13 8305 FIMI MON 1211 15 11 0 1 ...

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Page 11: ... 1 2 6 Electronics Board 1 3 1 3 TECHNICAL DATA 1 4 1 3 1 Performance Data 1 4 1 3 2 Power Requirements 1 4 1 3 3 Environment 1 5 1 4 INTERFACES 1 5 1 4 1 Electrical 1 5 1 4 2 Definition of Interface Signals 1 6 1 4 3 Mechanical 1 6 1 5 APPLICATION NOTES 1 6 1 6 INSTALLATION DATA 1 6 1 6 l Packing and Unpacking 1 6 LIST OF ILLUSTRATIONS FIGURE 1 1 MONITOR GENERAL VIEW 1 3 1 2 PACKING DETAILS 1 7 L...

Page 12: ...h includes details of the unit arrangement appertaining to FIMI Monitor applications as specified in section 1 5 1 2 1 SUPPORT FRAME AND CRT MOUNTING 12 INCH The support frame comprises four preformed metallic plates which provide when secured together by eight lock screws the main structural support for the CRT and pcb mounting racks The CRT is simply screw mounted to the left and right side plat...

Page 13: ...ontains the circuitry for video drive being directly mounted to the 7 pin connector of the CRT 1 2 6 ELECTRONICS BOARD This board is located in position 4 of the electronics rack in proximity to the CRT of special note is the external brigthness control potentiometer which from its mounting on the board protrudes below the CRT screen TOP PLATE CRT SIDE PLATE _ _ __ __ VIDEO AMPLIFIER PCB i I i j F...

Page 14: ...19 6608 MHz dot clock rate 2 808 MHz character rate 258 x 190mm display size 15 scan lines character block 25 rows frame 390 scan lines frame 50Hz frame refresh rate 19 5 KHz scan line refresh rate White Phosphor P4 standard with options of orange or green phosphor The power supply requirements for the monitor are Voltage Current Consumption 12VDC 180mV 200mA minimum 2A maximum 1 3 3 ENVIRONMENT T...

Page 15: ... Xl a 3 Spare Xl a 4 Spare Xl a 5 12V X2 al a2 a3 a4 a5 OV Signal Ground X2 bl b2 b3 b4 b5 Dynamic Focus Xe 1 OV Signal Ground Xe 2 Video Xe 3 Spare Xe 4 Brightness Xe 5 Focus Xp 1 CRT Heater Xp 2 64V Xp 3 12V Xp 4 Vertical Deflection Return Xt 3 Horizontal Deflection Return Xt 4 Horizontal Deflection Xt 5 Vertical Deflection Xt 6 Table 1 1 ELECTRICAL INTERFACES 8305 FIMI MON 1211 15 11 1 5 ...

Page 16: ...otes black 1 4 3 MECHANICAL Refer to related terminal Field Support Manual for cabinet or display interface details 1 5 APPLICATION NOTES The current applications of the FIMI Monitor are as follows Terminal P8042 UPL Terminal P8043 1 6 INSTALLATION DATA It is an essential requirement that the environmental conditions of the site where the monitor is to be installed conform to the specification det...

Page 17: ... I I l Sl 1250 MAX 8305 I I I I I I D I I I Figure 1 2 PACKING DETAILS FIMI MON 12 15 1 MONITOR POLVSTRENE PACKING INDUSTRIAL ADHESIVE TAPE LABEL CARDBOARD CONTAINER 6 CARDBOARD CONTA INER 7 SUPPORT BLOCKS B SECURING STRIPS 1 7 ...

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Page 19: ...ical Synchronization Circuit and 2 3 Deflection Amplifier 2 2 2 Horizontal Synchronization Circuit 2 3 2 2 3 Horizontal Deflection Amplifier 2 4 2 2 4 Video Amplifier 2 4 2 2 5 CRT Supplies 2 4 2 2 6 Cathode Ray Tube 2 4 LIST OF ILLUSTRATIONS FIGURE 2 1 BLOCK DIAGRAM FIMI MONITOR 2 3 8305 FIMI MON 1211 15 11 2 1 ...

Page 20: ...e in the beam intensity modulation over a short period Prior to modulating the beam the serial video input is amplified on the Video Amplifier board the output stage of which controls the current conditions in the CRT cathode The total CRT eletronics and video amplifier package requires only the one power supply voltage this being 12V th i s is derived from a power source also mounted in the monit...

Page 21: ...witching the primary winding of transformer in the CRT supplies circuit and to drive the horizontal deflection yoke winding 2 2 4 VIDEO AMPLIFIFER The video amplifier exhibits a fast response characteristic being held in permanent state of readiness by a voltage term derived from the 12V supply Upon reception of a video data pulse the output stage is switched hard on and then sharply off the resul...

Page 22: ...which are mounted the horizontal and vertical deflection yokes and the video amplifier pcb The CRT has three control grids BRIGHTNESS FOCUS and DYNAMIC FOCUS the anode EHT is fed directly from the CRT supplies circuit to the tube 2 4 FIMI MON 1211 15 11 8305 ...

Page 23: ...ontal Synchronization Timing 3 4 3 2 2 5 Logic Supply 3 4 3 2 3 Horizontal Deflection Amplifier 3 5 3 3 VIDEO AMPLIFIER 3 5 3 4 CRT SUPPLIES 3 5 3 4 1 14 5KV EHT SUPPLY 3 5 3 4 2 CRT CONTROL AND HEATER SUPPLIES 3 6 LIST OF ILLUSTRATIONS FIGURE 3 1 BLOCK DIAGRAM OF TOA 1170 CIRCUIT Ul 3 3 LIST OF TABLES TABLE 3 1 TRUTH TABLE FOR IC U51 3 4 8305 FIMI MOM 1211 15 11 3 1 ...

Page 24: ... The ramp waveform also appears at pin 1 in a buffered state Capacitors C4 and CS in conjunction with resistors R6 and R7 establish the waveform s linearity characteristic Potentiometer R7 allows adjustment of the curvature of the ramp The power amplifier operates with current feedback The output current of the amplifier flows through a resistor of small ohmic value RlO The resultant voltage drop ...

Page 25: ...the supply via C3 it increases until the power amplifier stage operates At the commencement of scanning the current starts to drop this causes a corresponding drop in yoke voltage the circuit then returns to the scanning condition The 24V supply for the TOA 1170 is derived from transformer T52 secondary pin 10 being rectified by V59 smoothed by capacitor C67 and then applied to a low pass filter f...

Page 26: ...pulse and therefore the timing of it s falling edge is dependent upon the fast RC time constant established by C53 R54 and R53 Potentiometer R53 allows adjustment for picture centering purposes Pin 13 output is linked directly to pin 9 Inputs at pins 10 and 11 are set permanently high via the 5V rail The falling edge of the input pulse presented at pin 9 triggers the second monostable producing an...

Page 27: ...nd horizontal scan is repeated until the next sync pulse from U51 The primary switching function of T52 is utilized in the generation of CRT supplies which will be fully described in section 3 4 3 3 VIDEO AMPLIFIER Transistor VlOl is switched on being forward biased by a base potential of 6 2V established by zener diode VlOO transistor Vl02 is off When the incoming video signal is applied to the b...

Page 28: ...ocus voltage is dynamic peaking at a period immediately before and after the horizontal sync pulse 6V This voltage is rectified by diode V58 and smoothed by C66 and provides the CRT heater supply 24V Rectified by V59 and smoothed by C67 to provide the VCC supply for the IC Lil 64V Rectified by V60 and smoothed by C68 to provi de the co11 ector voltage for the video amplifier and in conjunction wit...

Page 29: ...FIGURE 8305 4 lA 4 18 4 lC DIAGRAMS LIST OF ILLUSTRATIONS COMPONENT LAYOUT CRT ELECTRONICS PCB COMPONENT LAYOUT VIDEO AMPLIFIER PCB MONITOR ELECTRONICS AND CRT CIRCUITS FIMI MON 12 15 PAGE 4 2 4 2 4 3 4 1 ...

Page 30: ...2fJA 01506 A 01505 4 12 VERSION Figure 4 lA COMPONENT LAYOUT CRT ELECTRONICS PCB 1 R16 15 VERSION 6 C103 I 8 1 01 I I V102 C102 C104 Figure 4 18 COMPONENT LAYOUT VIDEO AMPLIFIER PCD 4 2 FIMI MON 12 15 8305 ...

Page 31: ...2 W c J 4 W ii POLYESTER t POLYCARBONATE iro POLYSTIRENE f 4r CERAMIC STYROFLEX ii ta16V f 25V g 40V Sa63V j 100V h 16QV Y 400V z SOOV W 630V Xr1KV y 2KV A BC5 7 R60 I A V53 BC 635 I vss 8YXss fm Xt5 Xu l J L J L7a FOCUS 280V xe1 w I 11 SKV I I I V103 MJl 18 315 Xd2 FOR EXTERNAL BRIGHTNESS CONTROL OPTION 15 ONLY __ _J II II NB C63 AND R72 12 DELETED FOR 15 VERSION ONLY Figure 4 lC MONITOR ELECTRON...

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Page 33: ...5 LISTINGS Not Applicable 8305 FIMI MON 12 15 5 1 ...

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Page 35: ...6 PARTS LIST 8305 FIMI MON 12 15 6 1 ...

Page 36: ...GENERAL ASSEMBLY 12 INCH 21 j f J 17 1 1 l ll il 0 540 15 16 14 6 2 FIMI MON 12 15 8305 ...

Page 37: ...d Assembly 9B 3122 996 47380 Spring lOB 2522 600 17027 Washer 4 2x12 NLN B 050 4 off llB 2522 163 01043 Pan tap Screw 4 2Xl6 UAN B 023 4 off 12B 3119 209 33540 Lead Xt assembly 13B 3119 209 30310 Sleeve 14B 5112 211 40180 Card guide 2 off 15B 5112 211 40170 Card guide 2 off 16B 5112 211 40220 Card lock 10 off 178 3119 208 54940 Printed Board Assembly 18B 3119 208 54950 Video Board Assembly 198 241...

Page 38: ...GENERAL ASSEMBLY 15 INCH I l I 9 10 7 4 5 8 3 6 4 FIMI MON 12 15 8305 ...

Page 39: ...4 30682 Table orange P2712 9300 941 30112 Tube green P2712 9300 941 10000 Tube white P2757 9300 941 20000 Tube green P2757 2B 3119 208 05210 Deflection unit 3B 3119 200 50270 Bread lead assembly 4B 3119 108 90850 Card assembly 5B 2122 996 47380 Spring 6B 3119 208 05250 Ground cable assembly 7B 3119 208 55570 PCB CRTOl 8B 3119 208 54950 PCB Video 9B Frame not used lOB Card holder not used 8305 FIMI...

Page 40: ...CRT ELECTONICS PCB 8 9 1112 13 1415 17 20 19 I 86 0 501A _ _ J 0250SA X2GJA 12 VERSION 891112 1517 8 10 1112 13 14 16 15 VERSION 6 6 FIMI MON 1211 1511 8305 ...

Page 41: ...22 352 68473 2022 552 01405 Description PCB CRT Electronics 15 inch PCB CRT Electronics 12 inch Bridging wire UAT 0238 9 off Connector 4SKT grey Connector 5SKT grey Connector 6SKT grey Connector 9 pin 2 off Heat sink Heat sink 3 off Screw M3x8 ST CD 2 off Screw M3xl4 ST ZN Lock Washer 3 ST 3 off Washer 3 2x7x0 5 ST 3 off Insulating bush 2 off Mica insulator 2 off Washer fl at Square nut M3 ST 2 of...

Page 42: ...CRT ELECTRONICS PCB 8 9 111213 14 15 17 20 19 86 01501A 01505 1 12 VERSION 8 9 1112 15 17 8 10 1112 13 14 16 15 VERSION OJ O C 02505C r 6 8 FIMI MON 12 15 8305 ...

Page 43: ...b resistor CR68 220E 5 72C 2322 212 83102 Carb resistor safety SR37 lKO 5 73C 2322 212 83108 Carb resistor safety SR37 lEO 5 74C 2322 212 83159 Carb resistor safety SR37 15E 5 75C 2322 211 23163 Carb resistor safety SR37 150E 5 76C 2322 205 23102 Metal resistor safety NFR2 1K05 5 77C 2322 212 23154 Carb resistor safety CR37 150K 5 78C 2322 212 23683 Carb resistor CR37 68K 5 79C 2322 242 13225 Meta...

Page 44: ...CRT ELECTONICS PCB 8 9111213141517 20 19 12 96 I 86 12 VERSION 01507A ___J 01505A 8 9 1112 15 17 8 10 1112 13 14 16 1 59 t J o 88 15 VERSION 02 07C 02505C r 6 10 FIMI MON 12 15 8305 ...

Page 45: ...682 Diode BA 159 99C 9331 355 30000 Diode BYX 55 350 lOOC 9331 178 80000 Zener diode BZX79 C24 lOlC 9334 151 00000 Integrated circuit TOA 1170 102C 9332 110 51682 Integrated circuit A7805 UC 103C 9331 667 30682 Integrated circuit SN74123N 104C 3122 200 21580 Connector 3SKT grey 15 inch only 8305 FIMI MON 12 15 6 11 ...

Page 46: ...VIDEO AMPLIFIER PCB 6 12 FIMI MON 12 15 8305 ...

Page 47: ...t F cap 630V lON 10 llC 2019 309 00054 Met PF cap lOOOV lOON 10 12C 2322 212 23102 Carb resistor CR37 lKO 5 13C 2322 181 73829 Met resistor SFR25 82R 5 14C 2322 211 23101 Carb resistor CR25 lOOE 5 15C 2322 211 23391 Carb resistor CR25 390E 5 16C 2322 192 31002 Met F resistor PR52 lKO 5 17C 2322 212 23221 Carb resistor CR37 220E 5 lBC 2322 212 23473 Carb resistor CR37 47K 5 19C 3122 108 20150 Coil ...

Page 48: ...22 124 1403 5322 124 14081 5322 121 40323 5322 121 40197 4822 121 40231 5322 121 40227 5322 121 4017 s 5322 121 44UI SJ22 121 44201 SJ22 121 40JOI 4822 121 40145 4822 121 41161 4122 121 40423 4122 121 40239 SJ22 121 44344 5322 121 44281 5322 121 54087 4822 121 50597 5322 121 541 5322 121 54127 822 122 30027 4822 122 30048 4822 122 30034 4822 122 30128 4822 122 J0053 4822 122 31174 4822 122 31504 5...

Page 49: ...ES 100 6 sw SX 2322 212 23102 4822 110 53107 RES ti 5X O SW 2322 212 23221 4822 110 53089 1 8 220 0 SW SX 2322 212 23473 4122 110 53152 1 1 471 o sw sx 2322 212 83102 4122 111 30108 RES UCO O SW SX 2322 212 83108 4822 111 JOJJ9 IES 1E 5X O SW 2322 212 831 Sl 4822 111 30156 RES 150 O SW 5X 2322 212 83159 4822 111 30027 IES 1SE 5X O SW 2322 214 13101 4122 110 23081 1 1 100 5X 1 1SW 2322 214 13103 a2...

Page 50: ...22 209 841 7 IC 8N74800H OO 5122 000 10090 5322 209 84915 IC N74811N 5122 000 10110 5322 209 84183 JC 8N74874N OO 5122 000 10130 5322 209 86062 IC 8N74L837JJ 5122 000 10200 4122 209 I06l1 UIJJ9AN 5122 000 10210 5322 209 IC TDA1060 5122 000 103 50 5322 209 8 5311 IC N74LSJ2A 5122 000 10480 SJ22 209 IS005 JC N74L8161N 5122 000 10600 5322 209 85862 JC 8N74L8240N 5122 000 10660 5322 209 85792 IC N74L8...

Page 51: ...1 178 60112 4822 130 14499 DIODE IZX79 B20 9331 178 80112 4822 130 34398 DIODE BZX79 B24 9331 178 90112 4822 130 34379 DIODE BZX79 C27 9331 3SS 30112 4822 130 3427 DIODE BYXSS O 9331 421 90112 4822 130 30817 DIODE IYXSS 600 9331 491 80112 4822 130 40854 TRANB 8C327 93J1 492 00112 4822 130 TRNtSISTDR IC337 9331 S92 00112 5322 130 J40 8 DIODE ZENER BZX87C12 9331 667 30112 S322 209 84194 IC SN74123N ...

Page 52: ...111 CAP 33HF 2222 4 5 5 64703 5322 121 50882 CAP 47HF 2222 630 01102 4822 122 30027 CAP 1000PF 1000V 10X 2222 630 01182 4822 1 2 30048 CAP 1 SNF 2222 630 01392 4822 122 30098 CAP 3900PF 2222 630 01471 4822 122 30034 CAP 470PF lOX CEIP 2222 630 01472 4822 122 30128 CAP 4 7NF 100V CER 2222 630 01681 4822 122 300 53 CAP 680PF RPLAT 2222 631 10279 4822 122 3004 5 CAP 27PF 100V 2222 631 10479 4822 122 ...

Page 53: ...473 5322 101 14048 POTNETER 4 K 2412 125 00039 5322 277 14232 SWITCH 2422 086 00181 5322 253 54033 FUSE REF 31J002 2422 132 01734 5322 280 24071 REEDRELAIB 3119 208 30750 5322 140 10205 TRAFO LINE OUTPUT 3119 208 51090 5322 150 10137 DEFLECTION UNIT 3119 208 54950 5322 216 21038 PCB VIDEO 3119 208 55570 5322 216 21235 PCB HAIN 3522 059 99310 5322 254 64001 FUSE 1A 2SOV T 4022 369 67971 5322 142 44...

Page 54: ...N74S11N IC SN74S2oH IC SN74 S74 N OO IC SN74LSJ73J LH339AN l UA 7912 IC TDA1060 IC SN74 LSJON IC N74LS32A IC SN74 LS1 16N IC N7 LS161N S122 000 10600 5322 209 85862 IC SN74L8240N S122 000 10630 5322 09 86334 IC 74 LS2 S S122 000 10660 5322 209 85792 IC N74LS273N 5122 000 10750 5322 09 85869 IC SN74LSJ7 AN 5122 000 10760 4 822 209 804 47 IC N74LS39JN 5122 000 10800 5322 209 86191 IC 74 808 5122 000...

Page 55: ...f BAM6 DIODE BZX79 C3Vo 9331 t77 60112 4622 130 30861 DIODE ZPD7 5 9331 177 90112 822 130 34297 Z DIODE BZX79 C10 9331 178 5011 482 130 3102 DIODE BZX79 818 9331 179 0112 4822 130 34499 DIODE BZX7Y B2v 9331 178 80112 4822 130 34398 DIODE BZX79 C24 9331 178 90112 4822 130 34379 DIODE BZX79 C27 9331 355 30112 4822 130 34275 DIODE BYX71 350 9331 421 90112 4822 130 30817 DIODE BYX55 600 9331 491 80112...

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Page 57: ...Materials 7 3 7 2 4 Cleaning 7 3 7 2 5 Adjustments 7 4 LIST OF ILLUSTRATIONS FIGURE 7 1 TROUBLESHOOTING FLOWCHART 7 2 7 2 ADJUSTMENT POINTS FIMI MONITOR 7 5 7 3A 12 INCH ACTIVE VIDEO DISPLAY SIZE 7 6 7 38 15 INCH ACTIVE VIDEO DISPLAY SIZE 7 6 LIST OF TABLES TABLE 7 1 ADJUSTMENT POINTS FUNCTIONS 7 4 8305 FIMI MON 12 15 7 1 ...

Page 58: ...ION CCT XI Bl TO XT 5 STOP PICTURE y vERTICALLv DISTORTED N COMPLETE HORI ZONTAL ADJUST MENT PROC R53 L51 L52 STOP COMPLETE VER TICAL ADJUST MENT PROC R2 RS R7 TROUBLESHOOT THE VERTICAL DEFLECTION CCT Xl B2 TO XT 6 TROUBLESHOOT VIDEO AMPLI FIER VlOl Vl02 AND 64 V SUPPLY CIRCUI N TROUBLESHOOT SUPPLY CIRCUIT VIDEO AMP N VlOl Vl02 FUNCTIONAL y CHECK HEATER ON CRT TUBE TROUBLESHOOT T52 V54 V53 V51 AND...

Page 59: ...ed the part number for which is given below TRIMMING TOOL 53322 395 54054 7 2 3 MATERIALS Materials required to carry out preventive maintenance are detailed below WIPERS SCOTT TYPE CLEANING FLUID 150 PROPYL ALCOHOL 7 2 4 CLEANING W ipe or brush clean all exposed surfaces for stubborn accumulations of dirt on the CRT screen a wiper dampened with cleaning fluid should be used Over longer periods th...

Page 60: ... bottom front right side of the monitor to a mid range position By adjusting the PRESET BRIGHTNESS potentiometer R73 obtain optimum character contrast without notice able character blooming with raster lines extinguished Adjust the FOCUS potentiometer R76 for optimum overall focus of the picture within the area between centre and upper left of the display Adjust the HORIZONTAL AMPLITUDE variable i...

Page 61: ... 26JA 01506A 0150SA 12 VERSION 15 VERSION Figure 7 2 ADJUSTMENT POINTS FIMI MONITOR 8305 FIMI MON 1211 15 11 7 5 ...

Page 62: ... I I I I I I I I I L ____ _ ________ J 01501 22 Smm Figure 7 3A 12 INCH ACTIVE VIDEO DISPLAY SIZE 22 5mm r I I I 18mm I I I 164mm I 18mm I I I 259mm I I I I I I I I I I I I L __ __ _I 01501 22 5mm Figure 7 38 15 INCH ACTIVE VIDEO DISPLAY SIZE 7 6 FIMI MON 12 15 8305 ...

Page 63: ...IGURE 8 1 MONITOR EXPLODED VIEW 12 INCH 8 3 8 2A VERTICAL DEFLECTION WAVEFORM 8 5 8 28 VERTICAL REFRESH PULSE WIDTH 8 5 8 3 HORIZONTAL SYNC TIMING 8 6 8 4 TRANSISTOR V53 COLLECTOR CONDITIONS 8 7 8 5 TRANSISTOR V54 BASE CONDITIONS 8 8 8 6 HORIZONTAL RETRACE 8 8 8 7 DYNAMIC FOCUS WAVEFORM 8 9 8 8 VIDEO RISE AND FALL TIME 8 9 8 9 TEST CONFIGURATION 8 10 8 10 MASK 2 AND FRAME ALIGNMENT 8 11 8 11 FRAME...

Page 64: ...he dismantling procedure 8 1 2 CRT ELECTRONICS PCB 3119 208 54940 Dismantling Procedure see figure 8 1 The CRT Electronics board 5 is mounted within the four position card rack 11 in the right hand slot slot 4 as viewed from the rear With the video Amplifier Board 1 removed see sub section 8 1 1 disconnect the EHT lead 12 from the CRT unit 2 Release the two board locking clips 14 located at the to...

Page 65: ...se sequence 8 1 4 SUPPORT FRAME 12 INCH VERSION Dismantling Procedure see figure 8 1 Remove the 4 position and 1 position card racks 11 and 21 from the support frame 10 by compressing the respective recess clips located in the top and bottom bracket plates Dismantle the support frame 10 by unscrewing the eight taptite screws 22 Disengage the corner assembly 25 from the top and bottom bracket plate...

Page 66: ...an be substituted by equipment with similar performance specifications 8 2 2 ADJUSTMENT PROCEDURES Vertical Deflection Circuit figure 8 2 a Set switch positions on the character generator DGlOO HA as follows DOTS CHA 9 CHA 80 HSYNC DELAY 01 HSYNC 09 HSCAN DELAY 08 FREQ BAND 4 TUNE DIAL 18 5 MHz VIDEO POSITIVE INTERFACE OUT LINES CHA 15 ROWS 24 VSYNC DELAY 01 VSYNC 04 VSCAN DELAY 16 60 CYCLES TEST ...

Page 67: ...l 8V and V2 45V 48V f Reset horizontal setting to 0 2mS on the oscilloscope and observe waveform see figure 8 28 for t2 450 500nS r 1 1 1 0 511 Figure 8 28 VERTICAL REFRESH PULSE WIDTH g Switch off supply and character generator on completion of adjustment disconnect 24VDC supply from PCB 8305 FIMI MON 12 11 15 11 8 5 ...

Page 68: ...et set the following switch positions Hori zonta1 Vertical Coupling lOuS div lV div DC c Switch on supply and character generator wait 30S warm up period Observe waveform on oscilloscope see figure 8 3 I t 2 i i 1 1 Figure 8 3 HORIZONTAL SYNC TIMING d Adjust PHASE POT R53 for tl 50uS Check that t2 18uS and V 4 2V e Switch off supply and character generator on completion of adjustment disconnect th...

Page 69: ...s not exceed 2A typical value 1 7A d Switch the 60 CYCLES TEST switch on the character generator to the TEST position and adjust the 1 bar 1 on the monitor screen for a stable condition by means of the tune di al knob on the character generator Return the 60 CYCLES TEST switch back to the 60 CYCLES position e With the frequency counter connected to Xl bl check that the horizontal hold is maintaine...

Page 70: ...igure 8 5 T r Vl i J _ tV2 1 015 1 Figure 8 5 TRANSISTOR V54 BASE CONDITIONS Check that Vl 3V and V2 8V h Connect a XlO probe to diode V55 anode and with the oscilloscope set at Hori zonta1 Vertical Coupling 20uS div 2V div DC observe the waveform shown in figure 8 6 the horizontal retrace sync pulse J Vl 02511 14 11 Figure 8 6 HORIZONTAL RETRACE Note that tl 53uS Vl 250V and V2 280 300V 8 8 FIMI ...

Page 71: ... terminal to pin 1 Pin 2 60 to OV DC Pin 3 600V DC Pin 4 230V DC Pin 8 6V Rl04 64V DC k Switch off the power supply disconnect the character generator and connect the pulse generator EH137 output t o Xl b3 signal ground to Xl a3 Set the pulse generator for the following output characteristics Pulse width 27nS Pulse amplitude 2 3V Pulse period 54nS Rise time 4nS Fall time 4nS l Using a type PM8932 ...

Page 72: ... adjust frame width by means of L51 and frame height by R6 see figure 8 11 If the correct frame height and width cannot be obtained check the 12VDC supply using multimeter PM2421 12VDC 180mV p Vertical Linearity Adjustment see figure 8 12 Select MASKl 3 and place at the top left hand corner of the screen area a count the number of comp1ete scan 1i nes and the dots of any part of a character remain...

Page 73: ... OF SCREEN IEEEEEEEEEEEEEEEEE I L _____ _J I I IccEEEEccEEEEEEEEc I L _____ _J IEEEEEEEE I EE EEEEEE MEASURE AT LEFT ANO RIGHT OF SCREEN I E I E _J I I E _J I E _J I I I _J 01572 Figure 8 10 MASK 2 AND FRAME ALIGNMENT _j FIMI MON 1211 15 11 01571 8 11 ...

Page 74: ...EEEEEE EEEEEEEEEEEE EEEEEEEEEEEE EEEEEEEEEEEE EEEEEEEEEEEE EEEEEEEEEEEE EEEEEEEEEEEE OIS11 VIDEO EDGE RASTER EDGE 1 7mm EEEI EEEEI ____ j 01501 Figure 8 11 FRAME HEIGHT AND WIDTH 112 TOP LEFT CENTER LEFT BOTTOM LEFT 1 3 A 8 Figure 8 12 MASK 1 3 AND VERTICAL LINEARITY FIMI MON 12 11 15 11 01509 0157 FRAME 8305 ...

Page 75: ...meter R76 and shall give a dot resolution defined as follows The frame area within a circle with a diameter measuring 90 of the picture width shall give a visible dark area between each dot Outside of the circular area dots must be recognizable Note this function is not adjustable bein controlled by the dynamic focus waveform 8305 FIMI MON 1211 15 11 8 13 ...

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