SERVICE MANUAL - AndysArcade.De
Contents
1. VG 978 vineosames SERVICE MANUAL VG 978 CHASSIS CODE N 083000 VG 978 20 DISPLAY CODE N 083001 GENERAL DESCRIPTION The VG 978 TV MONITOR have been designed to give you the best performances and reliability Our Display Monitor is build up on strong metal frame and the circuits are all solid state in order to insure long life It is containing 1 POWER SUPPLY TRANSFORMER with very low stray flux low power consumption and it works at 50 Hz or 60 Hz on demand 16 SILICON DIODES 1 HV SILICON DIODE 12 SILICON TRANSISTORS 2 INTEGRATED CIRCUITS All the others components are very good selected TV MONITOR DISPLAY Mains Specifications POWER SUPPLY INPUT 77 110 V ac 220 V ac 50 Hz 10 POWER CONSUMPTION 35 Watts VIDEO INPUT Composite Video 0 5 3 Vpp 70 video 30 Sync EN Non Composite Video 0 35 5 Vpp INPUT IMPEDANCE Terminated 470 Ohm Unterminated 10 Kohm BANDWIDTH 7 Mhz 12 Mhz at 1db adjustable SENSITIVITY 0 3 Vpp Non Composite Video for 50 Vpp on CRT VIDEO AMPLIFIER DC Restored SYNC INPUT Composite Sync 1 5 Vpp negative input impedance 10 Kohm I Horizontal Syne 2 5 Vpp positive input impedance 20 Kohm Vertical Sync 2 5 Vpp positive input impedance 20 Kohm SCANNING FREQUENCY Horizontal 15 625 Hz Vertical 50 Hz Horizontal 15 750 Hz Vertical 60 Hz PICTURE TUBE 20BM6 A50 120W 20 1142. deflection 24BM1 A61 120W 24 114 deflection HIGH VOLTAGE 17 KV rated voltage at 0 microampere of picture tube current HORIZONTAL RETRACE TIME 12 microseconds maxtum RESOLUTION 560 800 lines minimum at picture centre CONTROL POSSIBILITY Scanning phase control with reference to signal video input ADJUSTMENTS Power supply voltage dc Brightness Contrast Vertical frequency Vertical amplitude Vertical linearity Horizontal frequency Horizontal phase Horizontal linearity Horizontal amplitude Focus ENVIRONMENT OPERATION Maximum amblent temperature 50 C AUDIO TONE BURST AMPLIFIER Optional u VG 978 CHASSIS VG 978 20 DISPLAY CODE 083000 COPE 083001 TOP VIEW Linen wie rare cam pu Te SIDE VIEW SIDE VIEW VG 978 DISPLAY REAR VIEW CRT GROUND CRT SOCKET N VER PE VERT VERT YOKE 31 V REGULATION HEIGHT HOLD LIN CONNECTOR FE ae DET 2 CONTRAST FUSE BRIGHTNESS MAIN HORIZ WIDTH HORIZ CONNECTOR HOLD LIN VG 978 CHASSIS TOP VIEW BOTTOM NOTES 1 UNLESS OTHERWISE IN DICATED ALL RESISTORS ARE IN OHMS 0 25 W J AND CERAMIC CAPACI TORS ARE IN PpICOFA RADS THE OTHER CAPA CITORS ARE IN MICRO FARDS REFER TO PARTS LIST FOR COMPLETE DE SCRIPTION 2 D C VOLTAGES TAKEN WITH RESPECT TO CHAS SIS GROUND WI
3. 309000 303471 301102 302222 301472 301102 306221 303E39 312600 313500 313300 311303 313400 313100 402001 402001 402001 402001 401000 406001 406002 413000 413001 411001 340001 351000 301103 301101 301563 301821 301221 REF R212 R214 R216 R218 R220 R222 R224 R226 R228 R230 R232 R234 R236 R238 R240 R242 R244 R246 R248 R250 R252 R254 R256 R258 R260 R262 R264 R266 R268 R270 p202 P204 C200 C202 C204 C206 C208 C210 C212 C214 C216 C218 C220 C222 C224 C226 Resistor 470 Ohm 0 25 W J Resistor 18K Ohm 0 25 W J Resistor 47K Ohm 0 25 W J Resistor 100 Ohm 0 25 W J Resistor 270 Ohm 0 25 W J Resistor 100 Ohm 0 25 W J Resistor 4K7 025 W J Resistor 56K Ohm 0 25 W J Resistor 2K7 0 25 W J Resistor 33K Ohm 025 W J Resistor 4K7 0 25 W J Resistor 10 Ohm 0 25 W J Resistor 220 Ohm 0 25 W J Resistor 1K Ohm 0 25 W J Resistor 47 Ohm 0 25 W J Resistor 680 Ohm 0 25 W J Resistor 4K7 0 25 W J Resistor 1K Ohm 0 25 W J Resistor 1K Ohm 0 25 W J Resistor 220 Ohm 0 25 W J Resistor 180 Ohm 0 25 W J Resistor 22 Ohm 0 25 W J Resistor 8K2 Resistor 1K5 0 25 W J Resistor 1K5 0 25 W J Resistor IK Ohm 0 25 W J Resistor 1K5 05 W J Resistor IM Ohm 1 W J Resistor IM Ohm 1 W J Resistor 22 Ohm 0 25 W J CONTROLS Carbon Trimmer 470 Ohm 0 25 W Carbon Trimmer 1K Ohm 025 W Miniature Trimmer 470 Ohm 0 125 W CAPACITORS Electr capacitor 22 MFD 16V P C Electr capacitor 100 M
4. 3 Ohm 0 25 W J Resistor 5K6 025 W J Rest r 12K Ohm 0 25 W J Resistor 12K Ohm 0 25 W J Resistor 180K Ohm 0 25 W J Resistor 100 Ohm 4 Wed re i lt CONTROLS Carbon trimmer 220K Ohm 0 25 W Corbon trimmer 100K Ohm 0 25 W Carbon trimmer 100K Ohm 0 25 W CAPACITORS Ceramic capacitor 4E7 nF 50V M Ceramic capacitor 4E7 nF 50V M Film copacitor 0 1 MFD 160V J P10 Film capacitor 0 1 MFD 160V J P10 Film capacitor 0 1 MFD 160V J P10 Film capacitor 0 1 MFD 160V J P10 Ceramic capacitor 220 PF 50V K Film capacitor 0 22 MFD 100V M P15 Electr capacitor 22 MFD 16V P C Electr capacitor 1000 MFD 25V P C Electr capacitor 100 MFD 25V P C Electr capacitor 1000 MFD 16V P C Ceramic capacitor 470 0V M PART N 301124 3013E3 301562 301123 301123 301184 306101 nn 351003 351006 351006 310100 310100 311200 311200 311200 311200 310712 311102 313101 313200 313201 313105 310101 REF D400 1C400 1C400 CN100 PTF100 F100 DIODES AND I C Silicon diode 1N4002 Integrated circuit TDA1170 Integrated circuit TDA1170 MECANICAL PARTS Mate N Lock AMP 1 480709 0 PIN 1 2 3 4 5 6 AMP 350218 1 Fuse holder 5x20 P C Fuse 0 63 A M CN300 M Male Connector PCP CFM 8 CN300 F DS100 DS300 Female Connector CFF6 CRT Socket CN 25 CRT Socket PCB 10 78 Trimmer Schaft 4 L20 mm Lateral C R T support right Lateral C R T support left Spring for Resistor R100 1 C 16 PINS Socket AM
5. FD 16V P C Electr capacitor 22 MFD 16V P C Electr capacitor 22 MFD 16V P C Electr capacitor 220 MFD 16V P C Electr capacitor 4E7 MFD 16V P C Electr capacitor 100 MFD 16V P C Film 0 1 MFD 100V M P10 Ceramic capacitor 100 PF 25V M Ceramic capacitor 470 PF 25 M Electr capacitor 22MFD 16V P C Film cap 0 047 MFD 250V M P10 Electr capacitor 10 MFD 250V AX Film cap 0 1 MFD 250V M P10 PART N 301471 301183 301473 301101 301271 301101 301472 301563 301272 301333 301472 301100 301221 301102 301470 301681 301472 301102 301102 301221 301181 301220 305822 301152 301152 301102 303105 303105 303105 301220 351000 351001 351002 313101 313102 313101 313101 313103 313104 313102 311101 310000 310001 313101 311303 313900 311300 REF DIODES TRANSISTORS AND C R T D200 Silicon diode 1N4148 D202 Silicon diode 1N4148 D204 Silicon diode 1N4148 D206 Silicon diode 1N4148 D208 Silicon diode 1N4148 D210 Silicon diode 1N4148 TS200 Transistor BC237 TS202 Transistor BC237 TS204 Transistor BC237 TS206 Transistor BC237 TS208 Transistor BC307 TS210 Transistor BC237 TS212 Transistor BF 717 757 CRT200 Cathode ray tube 20BM6 A50 120W or 24BM1 A61 120W HORIZONTAL RESISTORS R300 Resistor 2K7 0 25 W J R302 Resistor 1K5 0 25 W J R304 Resistor 1M5 0 25 W J R306 Resister 1M5 0 25 W J R308 Resistor 4M7 0 25 W J R310 Resistor 820
6. Ohm 0 25 W J R312 Resistor 2K7 0 25 W J R314 Resistor 4K7 0 25 W J R316 Resistor 1K2 0 25 W J R318 Resistor 100K Ohm 0 25 W J R320 Resistor 82K Ohm 0 25 W J R322 Resistor 10K Ohm 0 25 W J R324 Resistor 22K Ohm 0 25 W J R326 Resistor 56K Ohm 0 25 W J R328 Resistor 560 Ohm 0 25 W J R330 Resistor 82 Ohm 10 W J R332 Resistor 22 Ohm 05 W J R334 Resistor 0 5 Ohm 0 5 W J R336 Resistor 39 Ohm 0 5 W J R338 Resistor IK Ohm 05 W J R340 Resistor IM Ohm 1 WJ R342 Resistor 47 Ohm 0 25 W J R344 Resistor 47K Ohm 0 25 W J R346 Resistor 4K7 0 25 W J R348 Resistor 470 Ohm 0 5 W J CONTROLS P300 Carbon trimmer 220K Ohm 0 25 W P302 Carbon trimmer 22K Ohm 0 25 W P304 Carbon trimmer 4M7 Ohm 05 W PART N 401000 401000 401000 401000 401000 401000 411002 411002 411002 411002 411003 411002 412001 440000 440001 301272 301152 301155 301155 301475 301821 301272 301472 301122 301104 301823 301103 301223 301563 301561 309001 302220 3020E5 302390 302102 303105 301470 301473 301472 302471 351003 351004 351005 REF CAPACITORS C300 Ceramic capacitor 120 PF 50V K c302 Film capacitor 0 22 MFD 100V M P15 C304 Film capacitor 0 47 MFD 100V M P15 C306 Film capacitor 0 1 MFD 100V M P10 C308 Film capacitor 0 68 MFD 63V M P15 C310 Electr capacitor 4 7 MFD 16V P C C312 Film capacitor 0 1 MFD 100V M P10 C314 Film capacitor 4E7 nF 630V J P10 C316 Film capacitor 0 22 MFD 100V M P15 C318 Electr capacito
7. P 00530177 2 Heat Sink TS100 Heat Sink 15300 Frame Support for CN100 PCB 8 78 BILDSCHIRMSPIELGER TE GMBH amp CO KG Technical Service 2 06404 2073 PART N 402002 420001 420001 251000 251001 255000 331001 250000 252001 253000 110001 100002 100003 102001 254000 101000 101001 100005 100002 Massener Str 27 0 6302 LICH Germany amp 06404 2071 72 Telex 482 890 games
8. TH 1V IMPUT COMPOSITE VIDEO VOLTAGE READINGS ARE 10 3 FOR HORIZONTAL FRE QUENCY ADJUSTEMENT TO SHORT CIRCUIT TP H H AND TO REGULATE HORIZONTAL HOLD TRIM MER SO THAT THE IMAGE SHOULD APPEAR SETTLED ON THE SCREEN 4 5 HARMONIC CALIBRA TION IN ORDER TO OBTAIN BET TER PERFORMANCES YOU SHOULD HAVE TO MAKE A PRECISE TUNE COILS ALINEMENT T302 TRANSFORMER ACCOR DING TO NEXT POINTS a execute every adjustment of sync geometry ampli tude and linearity with your desired signal b connect the signal tra cing probe of oscillograph on T 302 insulated terminal see fig so that you can see wave form Z c adjust the brigthness on minimum level so that to see the raster indistinctly d adjust L 308 up to redu ce on minimum the oscil lation amplitude that you can see on wave form Z e adjust L 306 up to ob tain the maximum horizon tal amplitude thereafter to adjust again 1 308 so that you should have obtain the Smaller amplitude of above mentioned oscillations vw uw CAPACITORS SYNTHETIC FILM chbactrors CERAMIC SCHEMATI VIDEO AMPLIFIER Su C200 56K R206 ES E CONTRASTI 220 16 220 2 30 R234 2 R300 120 50 C300 EM 5 185 R302 TDA 1180 1 300 HORIZONTAL 22K HORI
9. Z 5 H HORIZ R302 R324 0 63AM F100 7207 te 0 250 VAC c100 POWER SUPPLY TO CHANGE WITHOUT NOTICE DESIGN AND SPECIFCATIONS ARE SUBJECT 2N 3055 BU 6060 ECB BD 441 BD 442 CRT200 208M6 A50 120W 248M1 A61 120W 1K5 R258 1N4148 1K5 D208 S PHARM ALIGN 14148 0202 24 250 C326 so R28 39 D300 i R 330 ROPOHIG 3 10 250 2 XBA 15 c332 332 c322 Gm e p 10 250 C320 i HORIZ DEFL YOKE tao venr 2K 1324 oywo JHH moes VERTICAL cae 31V ADJ 220K 1 400 1 16 03 100 VERT LIN WAVEFORMS E LI LI mI tuha U fe Q3evPP CetivPP B sv PP Hes Hever Kz4avpp tsosevep Mzz40VPP Y w e ve Hs 24VPP J 08VPP PS38 VPP Vla s svpP Vike 2ever v ISsaivPP xi OPERATING INSTRUCTIONS 1 The TV Monitor works normally at 220 Vac 50 Hz and with CCIR standard composite video signal 2 If it is necessary connect 110 Vac you must reverse the connections of T 100 as indicated on print circuit 3 For horizontal frequency adjustment to short circuit TP H H and to regula t
10. al positive sync input 2 5 Vpp with 25 K Ohm input impedance Connection for 470 Ohm input impedance Connection for 10 Ohm input impedance HOR HOR 3e OR Ae 3e S rr vo 40 SYNCIN VIDEO IN P 06 1 40 SYNCIN 2 20 vert we 5 vert 5 REPLACEMENT PARTS LIST POWER SUPPLY REF RESISTORS R100 Resistor 75 Ohm 15 W J R102 Resistor 470 Ohm 1 W J R104 Resistor 1 Ohm 0 25 W J R106 Resistor 2K2 0 5 W J R108 Resistor 4K7 0 25 W J 9110 Resistor 1 K Ohm 025 W J R112 Resistor 220 Ohm 4 W J R114 Resistor 0 39 Ohm 1 W J CAPACITORS C100 Film capacitor 0 1MFD 250VAC M P15 C102 Electr capacitor 2200 MFD 50V AX C104 Electr capacitor 10 MFD 35V P C C106 Film capacitor 0 047 MFD 250V P10 M C108 Electr capacitor 1000 MFD 40V P C C110 Electr capacitor 470 MFD 16V P C DIODES AND TRANSISTORS D100 Rectifier Diode BY251 IF 3A VR 200V D102 Rectifier Diode BY251 IF 3A VR 200V D104 Rectifier Diode BY251 IF VR 200V D106 Rectifier Diode BY251 IF VR 200V D108 Diode 1N4148 2100 Zener 56 ZPD 5V6 0 5 W 2102 Zener 12V ZPY 12 13 W TS100 Transistor 2N3055 TS102 Transistor BD442 TS104 Transistor BC337 CONTROLS AND TRANSFORMERS 7100 Power Transformer P100 Carbon Trimmer 470 Ohm 0 25 W VIDEO AMPLIFIER RESISTORS R202 Resistor 10K Ohm 0 25 W J R204 Resistor 100 Ohm 0 25 W J R206 Resistor 56K Ohm 0 25 W J R208 Resistor 820 Ohm 0 25 W J R210 Resistor 220 Ohm 0 25 W J PART N
11. e horizontal hold trimmer so that the image should appear settled on the screen 4 5 HARMONIC CALIBRATION In order to obtain better performances you should have to make a precise tune coils alinement on T 302 transformer according to next points a execute every adjustment of sync geometry amplitude and linea rity with your desired signal b connect the signal tracing probe of oscillograph on T 302 insula ted terminal see fig so that you can see wave form Z c adjust the brigthness on minimum level so that to see the raster indistinctly d adjust L 308 up to reduce on minimum the oscillation amplitude that you can see on wave form Z e adjust L 306 up to obtain the maximum horizontal amplitude the reafter to adjust again L 308 so that you should have obtain the smaller amplitude of above mentioned oscillations INPUT CONNECTIONS Composite video input 0 5 2 5 Vpp Connection for 470 Ohm input impedance Connection for 5 K Ohm input impedance 3 3 VIDEO IN gt 1 T pan oe 4 2 5 20 s Composite and non composite video input 0 5 2 5 Vpp Composite negative sync input 1 5 Vpp with 10K Ohm input impedance Connection for 470 Ohm input impedance Connection for 10 K Ohm input impedance 3e 6 3e 6 Lien gt VIDEO IN gt 0 i 4 2 SYNC IN 5 20 syne iu f 5 Composite and non composite video input 0 5 2 5 Vpp Horizontal positive sync input 2 5 Vpp with 40K Ohm input impedance Vertic
12. r 100 MFD 18V P C C320 Film capocitor 10 nF 250V M P10 C322 Film capacitor 0 22 MFD 100V M P15 C324 Film capacitor 0 033 MFD 400V J C326 Film capacitor 2E7 MFD 250V K P27 5 C328 Ceramic capacitor 470 PF 500V M C330 Electr capacitor 100 MFD 63V AX C332 Electr capacitor 10 MFD 250V AX C334 Film capacitar 22 nF 630V M P10 C336 Film capacitor 0 1 MFD 630V M P22 5 C338 capacitor 47 nF 250V M P10 DIODES TRANSISTORS AND I C 0300 Fost recovery diode RGP 01 16 or 2X BA159 0302 Fast recovery diode BA159 TS300 Transistor BD441 TS302 Transistor B406 D IC300 Integrated circuit TDA 1180 TRANSFORMERS AND COILS L300 50 uH L302 Linearti Hor L304 Horiz Width T300 Horiz Dryver T302 H V Transformer Deflection Yoke VERTICAL RESISTORS R400 Resistor 8K2 0 25 W J R402 Resistor 8K2 0 25 W J R404 Resistor 150K Ohm 0 25 W J R406 Resistor 330K Ohm 0 25 W J R408 Resistor 33K Ohm 0 25 W J R410 Resistor 1 Ohm 0 25 W J R412 Resistor 47K Ohm 0 25 W J PART N 310709 311100 311101 311201 311000 313104 311201 311500 313102 311400 311100 312300 311302 310300 313600 313900 311501 311502 311303 403001 403001 413002 413603 420000 342003 341000 341001 341002 341003 341004 301822 301822 301154 301334 301333 3011 0 301473 REF R414 R416 R418 R420 R422 R424 R426 Paco 9407 404 c402 C404 C408 C410 C412 C414 C416 C418 C240 C424 Resistor 120K Ohm 0 25 W J Resistor 3E
Download Pdf Manuals
Related Search