Zenith ZVM-131 Скачать руководство пользователя | Manualshive

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Содержание ZVM-131

Страница 1: ...SERVICE MANUAL Color Video Monitors Models ZVM 131 133 135 136 585 30 1 860 23 1...

Страница 2: ...rvice Bulletins SERVICE DATE BULLETIN OF CHANGED NUMBER ISSUE PAGE S PURPOSE OF SERVICE BULLETIN LIMITED RIGHTS LEGEND Contractor is Zenith Data Systems Corporation of S1 Joseph Michigan 49085 The ent...

Страница 3: ...uipment 19 Troubleshooting 19 Fault Isolation Procedures 20 CONTENTS Alignments and Adjustments 21 Main Board Adjustments 21 RGB Cutoff and G2 Adjustments 21 RGB Drive Adjustments 21 Vertical Center a...

Страница 4: ...tage and Horizontal Sweep Board Component 1 General Troubleshooting 20 Location 42 2 Monitor Major Assemblies 52 20 High Voltage and Horizontal Sweep Board Waveforms 3 Cable Assemblies 53 42 4 Main Bo...

Страница 5: ...itors together with their export versions the ZVM 133 E and ZVM 136 E have no audio capability and their inputs are limited to those computers with an RGB output The ZVM 133 and ZVM 136 are the same e...

Страница 6: ...nt Panel Power switch Power indicator Brightness Contrast GREENIWHITE switch Rear Panel Focus RGB connector Page 6 Internal Horizontal centering Width Horizontal oscillator Vertical centering Height G...

Страница 7: ...ach 390 pixels horizontal by 240 lines non interlaced or by 480 lines interlaced 5 volts positive polarity digital signal NTSC 1 volt unterminated or 75 ohm terminated 1 volt to 5 volts horizontal 1 v...

Страница 8: ...36 only 640 dots 25 lines of 80 characters 640 pixels horizontal by 240 lines non interlaced or by 480 lines interlaced 5 volts positive polarity digital signal NTSC 1 volt unterminated or 75 ohm term...

Страница 9: ...NTSC 1 volt unterminated or 75 ohm terminated 1 volt to 5 volts horizontal 1 volt to 5 volts vertical RGB 20 MHz Composite 3 MHz RGB 70 nanoseconds Composite 100 nanoseconds 0 35 to 3 5 Vrms 50 Kil A...

Страница 10: ...DRIVE control for the de sired brightness level g If the dark areas color areas or both appear faded or washed out turn the BLACK LEVEL Page 10 control counterclockwise If the light back grounds and c...

Страница 11: ...AUDIO AMPLIFIER OR RECORDER FROM COMPUTER OR OTHER AUDIO SOURCE Installation Figure 2 ZVM 131 and ZVM 135 Controls and Connectors FOCUS Page 11...

Страница 12: ...II I I Page 12 CONTRAST CONTROL GREEN WHITE SWITCH POWER INDICATOR I i 8 tll I POWER SWITCH rR GBl Z 100 LOW PROFILE COMPUTER Figure 3 ZVM 133 and ZVM 136 Controls and Connectors ill j Installation...

Страница 13: ...color by pulling out on theCONTRAST GREENI WHITE control Installation 3 Turn on the computer and monitor power switches The power indicator on the front of the monitor should light 4 After the monitor...

Страница 14: ...he main board by connector 3T8 A positive temperature coefficient thermis Page 14 tor R3245 controls AC current flow through the degaus sing coil When monitor power is turned on a high AC cur rent wil...

Страница 15: ...n interfaced to the main board through connector E Circuit Descriptions The RED signal is supplied to the base circuit of emitter follower transistor 02501 During its quiescent state the base of 02501...

Страница 16: ...d at connector o The audio signal is supplied to either connector 9E4 or at pin 18 of OB 25 connector The signal is converted from digital to analog in IC1451 and then goes to the speaker through capa...

Страница 17: ...urrent drive capability The gain on each respective signal is Circuit Descriptions therefore equal to each other The BLUE signal drives the base of 01705 through pin 6 of buffer IC1700 RGBllnput The i...

Страница 18: ...tronics Corporation AC Leakage Test To prevent electrical shock after reassembly perform an AC leakage test on all exposed metal parts of the monitor Do not use an isolation transformer to perform thi...

Страница 19: ...rvicing Digital voltmeter High impedance input zero to 1000 volts zero to one megohm Heath Model SM 2215 or equivalent Variable power supply Zero to 120 VAC rms 3 amps Heath Model IM 5210 or equivalen...

Страница 20: ...ector 3F3 on the main board If the voltage is from 4 5 VDC to 12 VDC pro ceed to step 3 If the voltage is less than 4 5 VDC replace the main board With a DVM measure the voltage at pin 2 of con nector...

Страница 21: ...gray raster appears 4 Readjust G2 until the raster just disappears Servicing RGB Drive Adjustments Apply a white field on the entire CRT This can be with a video source or with a Z 100 or Z 100 PC com...

Страница 22: ...5M JUMPER 11 HORIZONTAL HORIZONTAL 0 V OSCILLATOR OSCILLATOR o n ADJUST TEST POINT 95 VOLT D ADJUSTMENT I VERTICAL 1 9 CENTER VERTICAL HEIGHT GREEN RED BLUE DRIVE DRIVE DRIVE tJ U RI F f BLUE GREEN RE...

Страница 23: ...D HORIZONTAL SWEEP BOARD r9S VOLT lH TEST POINT P1 JUMPER H P2 JUMPER WIDTH STEP BOARD Figure 6 WIDTH SELECTION JUMPERS SHOWN IN POSITION FOR ZENITH COMPUTERS High Voltage and Sweep BoardlWidth Step B...

Страница 24: ...th computers P1 should be in the upper vertical posi tion and P2 should be in the lower vertical position Page 24 With P1 and P2 in the lower vertical position the width of the display is much wider t...

Страница 25: ...4 60 V _5 FL YBA CK 6 PULSE 11 E4 26VDC j TP7 J JC TP6 RED BLUE CUTOFF CUTOFF R170 R17 R2390 CHROMA NULL PHASE ADJUSTMENT 1 14 1 l J 28 21201915 21 12VDC 13 i FIG E 5VDC B a1728 v P P Figure 7 A1 Al...

Страница 26: ...is recommended 5 Check to see if the screen is filled with the test char acter and if the width and height of the display are correct 6 Make any necessary adjustments see Alignments and Adjustments i...

Страница 27: ...120 REM label bars 130 LOCATE 13 S 140 PRINT TAB S BLACK TAB 1S BLUE TAB 2S RED 1S0 PRINT TAB 3S MAGENTA TAB 4S GREEN TAB SS CYAN 160 PRINT TAB 6S YELLOW TAB 7S WHITE 170 REM end of program 180 END S...

Страница 28: ...Page 28 Servicing...

Страница 29: ...ZVM 135 SEE FIGURES 33 AND 34 POWER _ INDICATOR L tJDISPLAY DRIVE ITJ 2 A 7____________________________________________________ 1 BLACK LEVEL I ICOLOR LEVEL SEE FIGURES 10 11 AND 12 crl 2B7 P ________...

Страница 30: ...r r I PO WE R SWITCH 150VDC 8POWER INDICATOR SEE FIGURES 19 20 AND 21 r SWEEP MODULE AND POWER SUPPLY ASSEMBLY A lll 06 03 I A l0632 03 HIGH VOLTAGE POWER SUPPLY SEE FIGURE 24 RGB GAIN CONTROL MODULE...

Страница 31: ...Figure 10 AudiolVideo Sync Board Component Location...

Страница 32: ...Signar Composite Input Page 32 W1 11 O 1VIDIV 2mseclDIV Zero Ref DC 1V DIV 2msec DIV Zero Ref DC 1V DIV fOj lsec DIV Zero Ref DC fV DIV 10j lsec DIV Connector E Pin RED Signal eRGB input Zero DC 1VID...

Страница 33: ...188 1 V F Z FILTERED IR ill 0 R1766 108 PI PI 0 R1711 150 on on B r TP7 r TP6 5 VDC on 0 68 FLY 188 f f 2S A1453 C14S1 22K on z O N 0 on on 0 f u l u R1451 1 81 9 J T u 10 11 I 220 ill RU62 tV CQ1726...

Страница 34: ...Page 34 Servicing...

Страница 35: ...TERED l1 3K R17B2 L1781 22UH 18PF C 8 22UH L178 Z 18PF C 85 10 4w7B C2 10 9 230 05 tit I j I R2276 W36 1 2K 1 v X FIL TE P c L C E 0174 R17B7 3 K 1 t r C01745 121 E 8m1B 3K y X FILTERED C01746 121 E 8...

Страница 36: ...Page 36 Servicing...

Страница 37: ...CR171 T ii II 551A Cl1737 CQ1707 121 a 1a19A 21 5 c R1727 Ii M Ii 121 I 11 5 _ lo C K______ __ llc 22 W t_ _ C0178B 121 lalgA r 895A Cl171 Z FILTEREO 1 I 14 338 J 121 r L TI F R1841 Y II i B Ii 13 R1...

Страница 38: ...Page 38 Servicing...

Страница 39: ...t CONTRAST R1732 ill I c R1718 L 01 121 1 M711 1 I 1 11714 121 111 f11 r r r A1719 Ql 3 R 1 71111f r t t L JU 121 181 11O 3l1li R1727 CR1782 r j 4 leu 1 CA171 CRI788 R172 3ee 1 CR1715 Ul723 I A1715 A1...

Страница 40: ...VIDIV 1OJ lsec DIV lA I I Il Ill f bt 1 I IH Conn I J I If 1 ector 303 p 60VPP In 5 I I 1 1 Conne ctor 3G3 Pin 2 Base Drive I I f H I 1 I 1 1 Connect or 3G3 Pin 5 Video Output r I U 1 I H r I J H I Co...

Страница 41: ...3473 C3456 L320t l T5 S 3 9K l200PF 35 1 R3412 140 CC R321B 2 21 0 R2504 4 7K R2S03 PROV R2507 t 3K IIIlCF R34S2 6 BK R2506 t BO EO OR VE R2508 7 SK DC ll 51K __ HI R321S 2 DC 26 CC 3241 R3233 r j MF...

Страница 42: ...i I ri 1t 1 Base of Q3209 I f 111 l11li 11111 I I Emitter QX3207 j J J I lIr Ir r I T T I III Base QX3202 Figure 20 r l or Zero Ref DC 2VIDIV 10 sec DIV Zero Ref DC 1VIDIV 10 sec DIV Z ero Ref DC 1VI...

Страница 43: ...A 10632 01 I ______ _ 1 2 6E O ________ J _ _ _ _ _ _ _ J r I I I I 3T3 TO 3V3 3240 1 3 1 1 11 1 1 I 1 1 1 1 3W3 REFERENCE ONLY OecOLTACE SOURCE 0 10 DC VOLTAGES TRANSISTOR AND I IRACKtT ASSEW8LY I I...

Страница 44: ...I 0 I BLU RED I i s _ _ ec I TO 9 186 03 SWEEP MODULE NOTE WIRE HOLES 2a GA Figure 23 Width Step Board Schematic Page 44 R3240 BLKO o HIlT GRA 0 I a u I I 0_ t r I Ii il 3 VIO u 0 o B 204 943 04G o BL...

Страница 45: ...Pin 3 5A2 Connector Blue Signal Composite input Video Output Board High Resolution Waveforms ZH 2 Ref DC 2VIDIV 10j lsec DIV Ref DC 2V DIV 1OJ lsec DIV Page 45 2 oRC CNo F 5 I i i I 2 i 3 L I L L b 1...

Страница 46: ...ND HOR SWEEP BD o FOCUS 1t1 TSl IlLUE VIDEO OUTPUT l lUll l t RED I EATIUI VIDEO auTour I L ______ I NDTt I 1 FIJ aISTOI I fW lltlffTT N tIS onclltlI I NDTE S UIIl 11TH CUICUlT IlUtJIPIX atSJ TOIIS II...

Страница 47: ...ROWN 1 MIDAIR l _ R E D___ 1 1 t ORANGE B L A C K I 2 2 t f 3 3 f 5Kfi Figure 31 Primary Control Board A 12800 Schematic QTY 1 1 1 1 1 ITEM PART NUMBER ITEM 063 10770 17 085 01559 02 019 00733 07 050...

Страница 48: ...EVEL 1 I i i 2B7 I TO 9 230 03 VIIlEO INTERFACE o TINT o SHARP NESS FLYING CONNECTORS UI LIGHT 1 LJ 1 _SE_N_SO_R J 204 895 10 20 4 89 5 17 B R IQH T______________ JI _ TO 9 230 03 Figure 34 I 12 VDC S...

Страница 49: ...Disconnect the cables holding the input panel to the main board HIGH VOLTAGE AND HORIZONTAL SWEEP ASSEMBLY 77 WARNING Discharge the high voltage at the anode lead to the CRT using a jumper lead connec...

Страница 50: ...to the cabinet and pull the speaker toward the rear and away from the cabinet Page 50 SECONDARY CONTROL ASSEMBLY ZVM 131 and ZVM 135 135 1 Remove the back cover 10 and the top cover 20 2 Disconnect th...

Страница 51: ...ginal design be modified or altered without permission from Zenith Electronics Corporation All compo nents should be replaced only with types identical to those Parts List in the original circuit and...

Страница 52: ...oard 79 114 802 Screw bracket to sweep and power supply assembly 80 12 8228 Main board left mounting guide Page 52 REFERENCE DESIGNATOR 81 82 83 85 90 91 92 93 100 103 104 105 105 110 115 120 125 ns n...

Страница 53: ...et bottom ZVM 131 Table 3 Cable Assemblies ZDS PART NUMBER DESCRIPTION A 9882 o1 A 9925 OS A 9919 43 from primary control board A 9882 o8 A 9882 17 A 9919 26 A 9913 29 A 9917 A 10080 includes housing...

Страница 54: ...1000 F electrolytic x x x x x x x C2501 22 7621 42 220 pF disc x C2502 22 7621 42 220 pF disc x C2503 22 7621 42 220 pF disc x C2504 Provision for 01 F C2504 22 7859 10 220 F electrolytic x x x x x x...

Страница 55: ...403 22 7773 18 033 I LF polyester x x x x x x x C3404 22 7773 17 027 I LF polyester x x x x x x x C3405 22 7775 08 0068 I LF polyester x x x x x x C3407 22 7710 01 1 0 Il F electrolytic x x x x x C340...

Страница 56: ...C3436 22 7742 10 001 j l F axial x C3436 22 7774 12 01 j l F polyester x x C3450 22 7739 29 27 j l F polyester x C3450 22 7619 41 200 pF disc x x x x x C3453 Provision for 22 07709 06 C3461 22 7710 01...

Страница 57: ...8 86 799 Connector pins 3 x x x x x 3T8 86 799 Connector pins 2 x x x x x 2A8 A 9915 62 HousinglTerminal Assy x x 3V3 86 799 Connector pins 2 x x x x x 3W3 86 799 Connector pins 3 x x x x 2M 78 3065 C...

Страница 58: ...x CR3211 103 254 01 Low voltage x x x x x x x CR3214 103 284 Low voltage x x x CR3214 103 326 Low voltage x x x x CR3217 103 377 04 Low voltage x x x x x x x CR3219 103 330 Low voltage x x x x x x x C...

Страница 59: ...76 02 PC board x x x x Transistors 02101 Assembly x x x x 19 957 03 Clip x x x x 121 1072 Transistor x x x x 126 2028 01 Heat sink x x x x 02101 121 1072 01 Transistor x 125 2028 03 Heat sink x 02102...

Страница 60: ...x x x x x Resistors RX2101 63 10565 32 22 0 film x x x x x R2102 63 10243 56 220 0 film x x x x x x R2103 63 10235 88 4 7 k o film x x x x x x R2104 63 10243 11 3 0 film x x RX2104 63 10243 11 3 0 0 f...

Страница 61: ...film x x x x R2502 63 10235 90 5 6 ka film x x x x x R2502 63 10235 87 4 3 ka film x x R2503 63 10235 56 220 a film x R2503 63 10235 58 270 a film x x x x R2504 63 10235 80 2 2 ka film x R2504 63 102...

Страница 62: ...x R2518 63 10235 73 1 1 kG film x x x x R2519 63 10235 93 7 5 G film x x x R2519 63 10235 82 2 7 kG film x x x x R2519 63 10233 92 6 8 kG film x R2520 63 10235 80 2 2 kG film x R2521 63 10235 59 300 G...

Страница 63: ...ilm x x x x x x R2540 63 10235 56 220 n film x R2540 63 10235 48 100 n film x x x x x x R2541 63 10235 54 180 n film x x x x R2542 63 10235 53 160 n film x x x x R2542 63 10235 72 1 k n film x x R2543...

Страница 64: ...lm x x x x x x R3234 63 10565 14 3 9 n film x x x x x x R3239 63 10244 20 100 kil film x x x x x x R3241 93 2104 Washer x x R3241 63 8246 4 n wirewound x x R3241 63 08246 4 0 n wirewound x x x x x R32...

Страница 65: ...10235 82 2 7 kfl film x x x x x R3428 63 10235 74 1 2 kfl film x x R3429 63 10235 76 1 5 kfl film x x x x x x R3431 63 10235 80 2 2 kfl film x x x x x x R3432 63 10235 79 2 kfl film x x x x x R3432 63...

Страница 66: ...x x R3466 63 10235 86 3 9 kil film x x x x x x x R3467 63 10235 94 8 2 kil film x x x x x x x R3468 63 10236 10 39 kil film x x x x x x x R3469 63 10235 72 1 kil film x x x x x x x R3470 63 10236 16 6...

Страница 67: ...995 82 pF disc x x x x x x C3211 22 7777 20 047 J l F polyester x x x x x x C3212 22 7234 560 pF disc x x x x x x C3213 22 7775 16 022 J l F polyester x x x x x x C3214 22 7775 10 0068 J l F polyester...

Страница 68: ...Wire 22 gauge x x x x x x 204 840 02 Printed circuit board x 204 840 03 Printed circuit board x x x x 204 840 05 Printed circuit board x Diodes CR3202 103 142 01 Low voltage x x x x x x CR3203 103 330...

Страница 69: ...x x x x RX3209 63 10235 72 1 kO fiim x x x x x x RX321 0 63 7805 3 3 kG carbon x x x x RX3210 63 7787 1 1 kO carbon x x RX3211 63 10818 3 0 kO film x x x x x x RX3213 63 10236 08 33 kO film x x x RX3...

Страница 70: ...90 0 wirewound x x x x x x R3262 63 10565 65 5100 film x x x x x x R3263 63 10565 65 5100 film x x x x x x R3264 63 10243 71 9100 film x x x x x x R3279 63 n57 220 0 carbon x x x x R3279 63 n29 470 ca...

Страница 71: ...01 Printed circuit board Table 7 Horizontal Ouput Transistor and Bracket Assem bly A 111 05 REFERENCE DESIGNATOR Transistor Q3208 Parts List ZDS PART NUMBER 121 01029 01 078 03080 01 DESCRIPTION Trans...

Страница 72: ...ideo out blue L5103 20 3907 12 10 II H peaking 05102 N A Assembly with heat sink L5104 20 3907 12 10 II H peaking 121 1034 NPN video out rad 05103 N A Assembly with heat sink 121 1034 NPN video out iJ...

Страница 73: ...film R5122 63 10235 92 6 8 kil film L5102 20 3907 25 Coil RCF R5123 63 10235 27 22 il film L5103 20 3907 25 Coil ReF R5124 63 10235 27 22 il film L5104 20 3907 25 Coil ReF R5125 63 10235 27 22il film...

Страница 74: ...10235 72 1 kfi film CR1705 103 142 01 Low voltage silicon R1730 63 10235 72 1 kfi film CR1706 103 279 10 Zener 5 1 volt CR1707 103 142 01 Low voltage silicon CR1708 103 142 01 Low voltage silicon Tran...

Страница 75: ...pF axial lead x x x C1456 22 7563 28 22 jJ F poly x x x C1457 22 7613 12 1000 pF disc x x x C1459 22 7861 10 220jJ F electrolytic x x C1459 22 7709 12 470 jJ F electrolytic x C1460 22 7708 06 22 jJ F...

Страница 76: ...22 7862 01 1 F electrolytic x x x x C2252 22 7859 07 33 F electrolytic x C2253 22 7742 10 1000 pF axial lead x x x x C2257 22 7742 10 1000 pF axial lead x x x x C2281 22 7390 05 33 F electrolytic x x...

Страница 77: ...C2401 22 7742 10 1000 pF axial lead x C2402 22 7859 07 33 jLF electrolytic x C2403 22 n42 10 1000 pF axial lead x C2411 22 n42 02 220 pF axial lead x C2412 22 n49 31 62 pF axial lead x Diodes CR1301...

Страница 78: ...ultrasonic x Integrated Circuits IC1301 221 105 Signal sync scan processor x x x x 78 3014 02 socket x x x x IC1451 221 98 Audio monolithic x x x IC1701 221 290 RGB gain control x x 78 3014 02 socket...

Страница 79: ...x L2376 95 3080 Transformer x L23n 20 3831 Filter x L2378 20 3887 20 coil x x x x L2401 20 3887 17 coil x L2402 20 3907 17 x L2403 Wire 22 gauge x L2427 20 3904 Tunable tint centering x Transistors 01...

Страница 80: ...x x x 01734 121 499 01 NPN x x x 01735 121 1019 PNP x x x 01736 121 1084 NPN x x x 01737 121 1019 PNP x x x 01738 121 551 NPN x x x 01739 121 895 NPN x x x 01740 121 1019 PNP x x x 01741 121 1019 PNP...

Страница 81: ...35 80 2 2 kn film x x x R1464 63 10236 12 47 kG film x x x R1701 63 10235 88 4 7 kG film x x x x R1702 63 10235 75 1 3 kn film x x x x R1703 63 10235 66 560 G film x x x x R1704 63 10235 48 100 G film...

Страница 82: ...7 Idl film x x x R1734 63 10235 48 100G film x x x R1735 63 10235 48 100G film x x x R1736 63 10235 48 100G film x x x R1737 63 10235 72 1 kG film x x x R1738 63 10235 83 3 kG film x x x R1739 63 102...

Страница 83: ...0235 18 82 kn film x x R1769 63 10235 02 18 kn film x x R1769 63 10235 06 27 kG film x R1770 63 10235 72 1 kn film x x x R1771 63 10235 38 39 n film x R1771 Wire 22 gauge x R1772 63 10934 96 681 n fil...

Страница 84: ...O film x x R1805 63 10235 76 1 5 kO film x x x R1806 63 10235 82 2 7 kO film x R1806 63 10235 88 4 7 kfi film x x R1807 63 10235 76 1 5 kO film x x x R1808 63 10235 82 2 7 kfi film x R1808 63 10235 88...

Страница 85: ...10235 48 100 0 film x x x x R1844 63 10235 48 100 0 film x x x x R1845 Wire 22 gauge x x x R1845 Wire 22 gauge x R1846 Wire 22 gauge x x x R1846 Wire 22 gauge x R1847 63 10236 15 k o film x x x R1848...

Страница 86: ...64 470 n film x x x x R2382 63 10236 04 22 kil film x R2382 63 10236 84 22 kil film x x x R2383 63 10235 48 100 n film x x x x R2385 63 10235 84 3 3 kn film x x x x R2387 63 10235 64 470 n film x x x...

Страница 87: ...35 48 63 10857 02 63 10235 52 63 10235 52 63 10235 66 63 10235 64 63 10235 76 85 1628 85 1628 01 78 3096 02 78 3096 01 69 346 03 54 952 02 DESCRIPTION Control 300 n film 300 n film 100 n film Control...

Страница 88: ...kG tint R7126 63 10235 87 4 3 kG film R7127 63 10235 82 2 7 kG film R7128 63 10235 78 1 8 kG film R7131 63 10857 87 Control 5 kG brightness R7132 63 10235 72 1 kG film R7133 63 10235 72 1 kG film R713...

Страница 89: ...I t Parts List Page 89 I I NOTE PICTURE TUBE MOUNTS GO ON THE INSIDE OF FLANGES Figure 35 Monitor Exploded View ff II I CAREFULLY SLIDE A GROUNDED FLAT SCREWDRIVER TIP UNDER THE LIP OF THE ANODE LEAD...

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