Tatung CM-1480 Service Information Download

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Summary of Contents for CM-1480

Page 1: ...SERVICE INFORMATION MODEL CM 1480 COLOUR DISPLAY MONITOR Code No 79 1191 2...

Page 2: ...3 OPERATING INSTRUCTIONS 3 1 CONTROLS AND CONNECTIONS 3 1 3 2 SET UP AND OPERATION 3 2 CHAPTER 4 ADJUSTMENTS 4 2 MONITOR ADJUSTMENT DEVICES 4 1 4 3 PREPARATION 4 2 CHAPTER 5 TROUBLE SHOOTING CHARTS 5...

Page 3: ...DIAGRAM Fig 7 1 MAIN CIRCUIT DIAGRAM 7 1 Fig 7 2 POWER CIRCUIT DIAGRAM 7 2 CHAPTER 8 REPLACEMENT PARTS LIST 8 1 ASSEMBLY AS lIS 8 1 8 2 ASSEMBLY PCB MAIN PWB 1323 02 8 1 8 3 ASSEMBLY PCB VIDEO PWB 132...

Page 4: ...64 colours DISPLAY CHARACTER 2000 characters 80CH X25 Rowan 8x8 dot atrix DISPLAY TIME RETRACE TIME RESOLUTION KISCONVERGENCE Horizontal mode 1 44 5us mode 2 39 37us Vertical mode 1 12 58ms mode 2 16...

Page 5: ...ENVIRONMENTAL DIMENSIONS WEIGHT Operation 100e to 35 e ambient Storage 40oe to 500e Humidity 50 to 80 non condensing Alitude to 7000 feet above sea level 365 W X 315 H X 400 D mm 13 5kg net 1 2...

Page 6: ...X RADIATION to 0 5 mR HR at 300 microamperes anode current For continued protection use the recommended replacement tube only and adjust the voltages so that the designated maximum rating at the anod...

Page 7: ...do not have the same safety characteristics as specified in the parts list may create shock fire X RAY radiation or other hazards 2 3 SERVICE NOTES 1 When replacing parts or circuit boards wrap the w...

Page 8: ...ctor switch adapts the monitor for operation from the local AC power source The vertical size adjustments mode 1 and mode 2 set the amount of vertical top to bottom raster deflection The horizontal ph...

Page 9: ...t a potentially lethal shock hazard 4 Turn on the computer and the monitor The front panel green LED should light The system prompt for the computer should be dis played 5 Adjust the left panel bright...

Page 10: ...26 R527 R566 R567 R523 R563 R593 R309 R306 R366 R326 R408 R468 R433 R493 R413 R473 R435 R333 R907 R451 t R813 Focus G2 EXTERNAL DESCRIPTION Left panel brightness control Left panel contrast control VI...

Page 11: ...or downwards Adjust R309 to stabilize the display by tur ning it first to one extreme and then backing off until the display just stabilizes Repeat this procedure from the opposite extreme until the...

Page 12: ...p ears 7 HORIZONTAL PHASE The horizcntal phase adjustment sets the left to right position of the display within the raster area To adjust horizontal phase 1 T rn the G2 central clockwise until the ras...

Page 13: ...controls to produce a white horizontal line This adjustment should be performed under low light To adjust the horizontal line precision 1 Remove the input signal from the monitor Disconnect video cab...

Page 14: ...us control for best overall focus centre top centre bottom centre left centre centre areas of the display for good focus Check the and right 4 Verify acceptable overall focus using the fill screen tes...

Page 15: ...y changing the angle between the 4 pole magnets until the red and blue lines overlap to form one magenta line Use a lOx or better magnifier to more recisely adjust the overlap once the line appears ma...

Page 16: ...ntre of the screen for proper convergence Repeat any steps as neq ssary 15 ADJUSTMENT AN TEST LOCATION 1 PCB MAIN adjustment and test location See Fig 4 1 2 PCB VIDEO DRIVE adjustment and test locatio...

Page 17: ...CJ04 R333 V D V Q301 C30J C304 DCD CD Q401 R409 R469 L401 j R469 CD Q405 Q305 R433 CD CD 0 R326 R435 J I OP4Q1 D l Q408 P404 P403 T401 0 Q402 0 0 o 0411 D D T402 0 T403 0 D C406 0 Q409 o Q410 Q412 0...

Page 18: ...543 P214 D D D a Q20B 00207 a DQ203 Q D Q210 D Q209 0206 D D a Fig 4 2 PCB VIDEO DRIVE adjustment and test location CD CD 0505 R523 R593 oa Q575 Q576 I 57 I 00506 P901 Q504 0990 KB KR o G20 o KG 0 G10...

Page 19: ...T801 CD R813 0801 R803 D 6 Q803 o Q802 DRBI5 Q801 F801 D RB02 le801 Fig 4 4 PCB POWER adjustment and test location 4 10...

Page 20: ...following safety notes carefully before attempting to troubleshoot or repair this monitor WARNING The anode of the CRT retains a potentially lethal voltage when the monitor is turned off Perform repa...

Page 21: ...letion of repairs 5 3 AC LEAKAGE TEST The repair and reassembly of the monitor can inadvertently cause a loss of electrical isolation between the AC power wires and the exposed metal parts of the loni...

Page 22: ...s shift 6 3 Colour bars should now be displayed Use this test in conjunction with the troubleshooting charts which follow this section 5 7 WHITE FIELD 1 Press F1 or F2 2 Press F4 or F5 F6 F7 F8 5 8 TR...

Page 23: ...III s o a c n C t s 1O n s III C t it Display Turn Present Monitor On And Display On Stable NO NO Power Supply Mam Board Colours Appear NorlTlal NO Display WillIe Field YES Allow Monitor T Run Check...

Page 24: ...eck Check Power YES 115 230V YES Internal YES Power YES Output Cord f SWitch Fuse f Switch I VOltages Ok Position Ok Ok Present Ok NO NO NO NO NO Replace Set Replace Replace Dead Unit Return To Factor...

Page 25: ...ify Waveforms At R G B Outputs And At Inputs To RGB rgb Drivers TO Narrow Problem Check RGB Compare To Waveforms Waveforms YES Pictured For At Correct Connectors Mode P207 P208 P209 All Similar All Pr...

Page 26: ...Check Waveform YES Present YES Inputs YES Transistors Missing Check Similar Q 504 505 506 R Completely Waveforms Q544 545 546 G At P207 P208 Q574 575 576 B P209 NO NO V ideo Board Horizontal RGB Drive...

Page 27: ...07 C414 Sync TP21 IC Q401 Only Ok INO H 5ync Input Bad Any YES Vertical J Horizontal Video Brightness Deflection YES Deflection YES Present Present 1 Present Board NO iNO lNO Check Check Anode YES Che...

Page 28: ...Only 0407 C414 Sync TP21 IC 0401 Ok INO H Sync Input Bad Any YES J Vertical JHorizontal YES Video J D ldlrness Deflection YES DePlection Present 1 Present Board P esent NO INO J NO Check Check AnOdj...

Page 29: ...56150 TT 2 94V 0 W 04 PWB I323 S0532132JO CHAPTER 6 P C B LAYOUTS R3e6 Fig 6 1 PCB MAIN COMPONENTS LAYOUT 0 r403 A457 T c 9 C 0408 C4H t J 6 0 _ N 6 R 2 R S3 10 zO 11 1 I...

Page 30: ...a 0 C jc 0 l i A59 0 050S0 RS24 0514 d l 0504e C B PWB 13J7 O G t 0512 OS02 T T 2 94V 0 a A a t E5SISO OS71 0 OSOl TR J 94v 0 0 __ A903 TP S2B J105 R901 P901 J104 H H KB KA G2 KG G1 l o TP S2G GO RSS...

Page 31: ...R821 J R822 OC825 DCOIL R80l AC 00 swO SW D 8ACO RB19 o C K 0 sw NY G RS17 UA a803 OBOS t N o J gO 0 0 110 220 _ I 0802 E_B A818 oBIl CB20 D C81B C8 3 C814 CB17 R81S D 0812 1 2 0 T o eD o i5 t u U g...

Page 32: ...PCB MAIN PWB 1323 02 CAPACITOR COC1 5213322091 C002 003 5231810391 C201 5213310191 C202 5231810391 C203 5213210191 C222 5213310191 C223 5213347112 C224 5213310191 C301 5222233391 C302 5213601091 C303...

Page 33: ...50V 4n7 C414 RA 5223795201 POLYPROPYLENE 1600V 9n5 5 C414 RB 5223295202 POLYPROPYLENE 1600V 9n5 5 C415 5223410401 POLYPROPYLENE 250V Ou1 C416 5214122012 EL 100V 22u C417 5271110501 POLYESTER 100V 1uO...

Page 34: ...5 CF 1 4W 15k R306 5160806110 VR lkO R307 5142810395 CF 1 4 11 10k R309 5162171720 VR 5kO R310 5142827395 CF 1 4W 27k R312 5142412190 CF 1 2 11 120 R R313 5142811395 CF 1 4 11 11k R314 5142891295 CF 1...

Page 35: ...3k3 R431 5142810495 CF 1 4 11 lOOk R432 5142810295 CF 1 4 11 1kO R433 5162171720 VR 5kO R434 5142810295 CF 1 4 01 1kO R435 5162901402 VR 3W 60 R R436 5130456003 KOF 2W 56 R R437 5130427103 KOF 2W 270...

Page 36: ...ECTIFIER GP15G 0307 6615007930 DIODE ZENER HZ11A 2 D308 6613001760 DIODE SWITCHING IS2076 0309 RA 6615009711 DIODE ZENER HZ6C 2LTE 0309 RB 6615006431 DIODE ZENER EOAOI 065B D401 0404 6613001760 DIODE...

Page 37: ...lOn Z5U C503 5213510091 EL 35V lOu C541 C542 5231810391 CD 50V lOn Z5U C543 5213510091 EL 35V lOu C571 C572 5231810391 CD 50V lOn Z5U C573 5213510091 EL 35V lOu RESISTORS R205 5142812295 CF 1 4 11 1k...

Page 38: ...6624005102 TR PNP BC307B 0501 AA 6621004500 TR NPN 2N2369 Q501 BA 6621026300 TR NPN 2SC641K Q502 AB 6621004500 TR NPH 2N2369 Q502 BB 6621026300 TR HPH 2SC641K 0503 6622002901 TR HPH BC237B 0541 AF 662...

Page 39: ...TIORS D501 0502 0541 0542 0571 D572 6613001730 DIODE SWITCHIHG 1S2076 Q504 AC 6621026000 TR HPH 2SC1507 Q504 Be 6621013700 TR HPH 2SC1514 0505 AD 6621004500 TR HPH 2H2369 0505 BD 6621014530 TR HPH 2SC...

Page 40: ...6 5142820195 CF 1 4101 200 R R807 5142812295 CF 1 4101 1k2 RBOB 5142412490 CF 1 2101 120k R810 5142415490 CF 1 2101 150k R811 5142827095 CF 1 4101 27 R RB12 5142810395 CF 1 4101 10k R813 5162101920 VR...

Page 41: ...AMIC 400V 4n7 RESISTOR R826 5142830490 CF 1 4W 300k COILS L202 5061102900 TOROID CORE L804 5061106900 LINE CHOKE 40 H 8 7 ASSEMBLY PCB INDICATOR PWB 1351 01 SEMICONDUCTORS 0001 6618014200 DIODE LED GR...

Page 42: ...CIRCUIT REF PART NUMBER DESCRIPTION 5057404103 SIGNAL CABLE D SUB 9P o...

Page 43: ...6644058800 IC TDA4601 5054410501 FU E 250V 2 5A 5061106600 CORE B01 ATlF 5062102400 COIL CHOKE TRF 9229 5062217000 COIL LOSS TSH 170 5062217000 COIL LOSS TSH 170 5062217000 COIL LOSS TSH 170 506221700...

Page 44: ...1 0806 V09E R8G5 390K R810 150K 1 2W R808 R812 120K 1 2W 10K R814 R813 0808 8 2K 10K V09E T C814 047u 630 1 RBI5 45K 6 T801 lOW 14 i 0818 E VI9G 15 I I C812 1500P 160CV II 9 R816 100 IW 161 I II I I...

Page 45: ...r I R G s PWB 1323 o Tp 21 on tr H SYNC I lc 10 CHAPTER 7 SCHEMATIC DIAGRAM Fig 7 1 MAIN CIRCUIT DIAGRAM 7 1...

Page 46: ...v zo _ tOO z_ uNO ZlII L_ 7 p f 2 f D o...

Page 47: ...i 9 I CHAPTER 7 SCHEMATIC DIAGRAM 7 1 MAIN CIRCUIT DIAGRAM 7 1 l...

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