Страница 1: ...DT2 2MRR SERVICE MANUAL DT2 D12 SERIES DATA DISPLAY TERMINALS ZENITH RADIO CORPORATION 1000 MILWAUKEE AVENUE GLENVIEW ILLINOIS 60025 PRINTED IN U S A AUG 1979 2 00 923 951...
Страница 2: ...RT 2 SUBJECT IMPLOSION PROTECTION 1 All Zenith picture tubes are equipped with an integral implosion protection system but care should be taken to avoid damage during installation Avoid scratching the...
Страница 3: ...e going standard VIDEO 1 0V to 2 5V P P internal or customer supplied 500n contast control for higher input levels Positive polarity for white characters Other polarities are available for horizontal...
Страница 4: ...through a coupling network consisting of C110 and CR103 The resulting Lock signal is rereceived by one side of a precision astable multivibrator at the 4 emitter of 0103 The astable multivibrator cir...
Страница 5: ...ERT DRIVE en VIDEO INPUT HORIZ DRIVE n 0 U VERT VERT OSC AMP VIDEO DRIVER MONOSTABLE ASTABLE MULTIV f MULTIV VARIABLE TIME VERT OUTPUT VIDEO I OUTPUT I YOKE H V HORIZ HORIZ HORIZ DRIVER 4 OUTPUT SWEEP...
Страница 6: ...w C C W 0 z z z za z z 0 Q z 1 1 0 I c 0 a a w 0 I I Na wO 9 1 0 I I I I a a a CJ a o 1 w O a CJ a a a 0 XLC CJ w III III III I l 2 3 4 5 6 7 8 9 10 Optional A Horizontal drive signal 15750Hz 500Hz 1...
Страница 7: ...l to adjust the regulated B of the monitor to 15V Check for proper adjustment 6 Adjust the phase control to center the video information within the raster The contrast control may have to be adjusted...
Страница 8: ...TO SWEEP HORIZ r UOI WIDTH BlK YEl _ lEADS YOKE 00 FOCUS RED BLUE 1 7 LEA OS Y0 KE GND B CRT SOCKET VERT SIZE BRIGHTNESS...
Страница 9: ......
Страница 10: ...4te S tII RI22 3 9921 46 laxm 83 IO IRm SHIi He 9JW 1IE 1 1O 1 1II 1 41 1 41 1 41 V RI28 63 10184 20 lOOK OHM RESISTOR 10 CARBON COMP 1 1RX128 3 1 5 RI29 63 8197 H201 1202 lK OHM RESISTOR 1 51 FILM 1...
Страница 11: ...PF 0 CRI09 CRID3 OSC IV 6 CRIOr L L _ Dp_ _ _ C_ A_L_ __ _ __I_ a I l RIOI CIOI 0 2A I L __ ________ cy_ _ _ _ _ Io F _ _ H_ _ _Z _ ________________________ _ ______________________ ________________ L...
Страница 12: ...f f j 7 l R 22 CI03 I 160PF RI03 8 2K RIDS Cl22 C10S CI08 Rtt7 RIDS RI07 560 Rill 2Y HOR I Z B2 5S 5EiOPF CI 130PF X 82PF 3 9K QI05 2671 200K rr 511 DRIVER f r cJJ 2 Sf R 2 CR OS tl R 4 Y QI02 QI03 QI...
Страница 13: ...1 11ft R201 63 1183 330 OHM RESISTOR t5 CARBON COIIP 1 21 H202 83 1110 18 OHM RESISTOR t51 CARBON ct IMP 1 2 R203 83 1198 2 2KOHM RESISTOR HIK CARBON COMPo 1 21 a204 63 7821 10K OHM RESISTOR 1B1 CARBO...
Страница 14: ...OLT AC INPUT REF NO PART NO 22 7154 13 22 7152 08 22 7717 09 22 7154 08 63 7769 63 7715 63 10449 69 BLK GND DESCRIPTION LEGEND 14 RED 15VDC 800mA TO 0502 ON CHASSIS FRAME CONNECTW WHT YEL WIRE TO LEFT...
Страница 15: ...HORIZONTAL YOKE PLUG BLKIYEL 1I0 V1220V A Co INPUT 50f60 Hz POWER SUPPLY 15 AC INPUT l R 0 7 560 I I I I I I I I I...
Страница 16: ...in parallel 103 284 Diode 1N4820 103 295 02A Diode BA245 103 295 03A Diode 1N4148 103 298 04 Diode 1N4822 103 298 05A Diode 1N5398 212 76 Diode 1N4005 212 76 02 Diode 1N5061 121 699 Transistor MPSA 70...
Страница 17: ...n VIDEO J6 2 HALF INTENSITY 1 BRIGHTNESS 500n c GRN PIN8 SCREEN c BRIGHTNESS Ii 2 J6 7 VIO GND PIN 10 FROM 3 P C BD J6 1 BRN GND PIN 1 TO MONITOR J6 3 ORG VSYNC PIN 9 J6 4 YEL HSYNC PIN 6 J6 5 BLU 15V...
