NEC JC-1401P3A User Manual Download

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Summary of Contents for JC-1401P3A

Page 1: ...Horizontal sync Positive Negative Vertical sync Positive Negative Composite sync TTL Level Positive Negative ka Composite sync on Green Video NOTE The above specifications are subject to change Video...

Page 2: ...UT...

Page 3: ...3 Weight 15 2 kg Side 4 Controls Rear Controls Power Switch Manual Switch Color Switch Text color Switch TTL ANALOG Switch Top Controls Brightness Control Contrast Control V Size Control V Position Co...

Page 4: ...ICAL 5 GROUND ENHANCED GRAPHICS PROFESSIONAL GRAPHICS TTL 64 16 COLORS ANALOG ASSIGNMENT OTHER COMPUTERS ANALOG SEPARATE COMPOSITE SYNC ON 8 COLORS 16COLORS 64 COLORS peers EO SECONDARY GREEN o PRIMAR...

Page 5: ...e 1 0 3 to 0 5 17 72 1766 16 1 to 17 8 5 56 to 62Hz 13 84 16 11 166 12 to 17 mS and O R 0 8 to 4 0 0 066 Otol mSandQ O R 0 8 2 0 2 fH 5 Horizontal x om H wu ms Pins Vertical Qms Rms Sms Range 1 64 5 5...

Page 6: ...8 D p A D B 5 B A 2 and 2 B 545 VERTICAL M A Sync Polarity Negative TUL Equalizing Pulse is available EXAMPLE TIMING same 25 5 2 31 5kHz SO TS 39 2 31 75 64 5 to 28 6 5 15 5 to 35kHz 3214 2452 201048...

Page 7: ...ompatible with the IBM Professional Graphics Adapter the IBM Enhanced Graphics Adapter the IBM Color Graphics Adapter and other IBM compatible graphics adapters MultiSync s wide compatibility makes it...

Page 8: ...switch is OFF MultiSync automatically works in the IBM mode and adjusts itself to the scanning frequency resolution and color requirements of the IBM compatible graphics adapter being used When this s...

Page 9: ...n to the input signal of the graphics adapter being used Refer to instructions accompanying the graphics adapter information on the input signal and refer to No below TEXT COLOR SWITCH Refer to No TEX...

Page 10: ...TROL Used to adjust the picture brightness of the screen CONTRAST CONTROL Adjusts the display to the contrast preferred by the user BRIGHT CONTROL 69 V SIZE CONTROL V HOLD CONTROL Or POSITION CONTROL...

Page 11: ...ion to the left TEXT swiTcH This switch controls the text mode of MultiSync When it is ON the text of the display will appear in one color selected by the TEXT COLOR SWITCH No 2 3 and 4 of the dip swi...

Page 12: ...screw driver as per Fig 1 Fig 3 Stand the display correctly so the JC 1401P3A name on the base be seen from the front NOTE When turning the displag in any direction do not apply any sudden pressure 1...

Page 13: ...5 BOARDS SWITCHING REGULATOR POWER SUPPLY BOARD PWE 107 INTERFACE BOARD PWE 110 VIDEO BOARD PWE 122 CRT BOARD PWE 123 DEFLECTION BOARD PWE 105 CONTROL BOARD PWE 125A LED BOARD PWE 125B USER CONTROLS P...

Page 14: ...mm _ L WIDTH COiL L505 3 LINEARITY COIL 1504 K ADJUSTMENT CONTROLS V LINEARITY 2 VR401 V LINEARITY 1 VR402 SUB HEIGHT 1 VR403 SIZE PIN CUSION VR404 BIAS VR405 V MODE VR451 SUB HEIGHT 2 VR452 SUB H CE...

Page 15: ...2 SUB CONTRAST CONTROL VR703 R GAIN CONTROL VR704 G GAIN CONTROL VR705 B GAIN CONTROL VR706 6V ADJUST CONTROL VR707 TTL ANALOG SWITCH SW801 MANUAL SWITCH SW802 TEXT COLOR SWITCH SW803 NO 2 3 4 COLOR S...

Page 16: ...SW REG PWB LAYOUT 85V ADJ VR651 En it HIGH VOLTAGE CONTROL 652 EET V LIMITER F a VR653 isl T E...

Page 17: ...izing TTL level negative positive separate composite Scanning Frequency H 15 kHz 35 kHz V 60 Hz Unless otherwise specified adjust at signal 6 22 kHz SW REG UNIT 1 1 B VR651 85V LINE Adjust VR651 to be...

Page 18: ...at factory Do not attempt to readjust 3 Video PWB pre Adjustment 6V ADJUST VR707 VIDEO PWB PWE 122 Figure 2 1 6V adjustment Adjust VR707 so that the voltage between TP701 and GND is 6V 0 05V DC 4 Main...

Page 19: ...5 so that the entire picture ap pears 2 H V ADJ VR2001 The H V ADJ VR2001 is permanently sealed at factory Do not attempt to readjust 3 linearity Adjust L504 for the optimum H linearity at this time t...

Page 20: ...t pin 5 should be low d Applies the signals in above steps a b and c and check that the vertical amplitude for each is 180 2 mm If readjustment is necessary start from step a and proceed in order 4 3...

Page 21: ...eference color Remove the TP401 GND and TP901 TP902 shorts NOTE Perform the cut off adjustment in as dark a place as possible as this will facilitate white tracking 4 Adjustment of sub brightness a e...

Page 22: ...at the display is not being exposed to any external magnetic fields 2 Ensure that the spacing between the Purity Convergence Magnet PCM assembly and the CRT stem is 29 mm 1 mm See below diagram 3 Prod...

Page 23: ...e crosshatch pattern on the display 6 Vertical green and magenta lines are converged by varying the angle between the two tabs of the 6 pole magnets 7 Horizontal green and magenta lines are converged...

Page 24: ...2 0 0 f E i 2 En g iio EX E I E o s o 4 N N is e o 81 e f A A 91 e PESA N dsA HH BB cage K ERES x O I S N S u31 SV1 A s 9 NS ot e N N o we S S o uf e AN A fo l 60X 10a A 3 3215 1132 3A 1 72012 10 5 2...

Page 25: ...L L 4j 91x ae et 7 ino WWE sp 3215 1132 YOLOVYVHD TV LNOZI IOH 72012 LOG A 0334 H INI 08 55 WO3 85 WOU 12485 v Vd WO 0091 9A1 2075 Hi...

Page 26: ...af 609 E 8 e pe o m NI Pete ANNA N LIA N ol s ino 440 ILL 24465 14N JUN 3ZIS1139 ADNANOAAS 21143 1 7 oO3xdJH 32012 10 22975 0 5 2 m 5 z qub v L 9 5 v 2 A...

Page 27: ...oe s S L L 3 a u s 3215 1139 YOLOVAVHD AON3n0O3 J o SINN em Espere spans BR E AON3nO314 feon sm SES 3 0334 8 14815 MSL AOdNIA L WOJ VIVO WOU 1 12085 VI VO 009 pen AdH Ad A dsuN YN 14N 9012 6 8 L 5 Y 2...

Page 28: ...aracters or less 3 digit 5 Number of indication characters horizontal Nht or less 3 digit 6 Horizontal sychronization position Nht or less 3 digit V 1to 16 H H 1 to 15 chr Total raster adjustment 31 H...

Page 29: ...Drive Width Step Width OPTION PARAMETERS OP 1 0 off 1 OP 2 0 off 1 OP 3 0 off 1 OP 4 0 off 1 5 0 non inverted 1 inverted OP 6 0 non inverted 1 inverted 7 0 non inverted 1 inverted 8 0 non inverted 1...

Page 30: ...7 08 211650 o 01 vl 08 08 801 8 66 65 919706 01 8 88 08 vol 8 90 09 00006 0 979 1 01 8 88 08 voL 8 56 65 000752 008706 3 1320 0 191291945 1 zH 9125 18913A ZH 63402 105119 PAA Mays 21102 104 1914 1014...

Page 31: ...ECULIAR NOISE HIGH VOLTAGE GENERATED AT POWER SW ON OR STATIC ELECTRICITY NG CHECK OSC H DEF HV CIRCUIT REFER TO ITEM 5 CHECK 12V LINE MEASURED ON THE VIDEO PWB PWE 122 5V LINE BETWEEN POINTS AND P1 A...

Page 32: ...T SIGNAL WITHIN THE RANGE FOR WHICH ABL DOES NOT FUNCTION EVEN WITH MAXIMUM CONTRAST REFER TO THE ALIGNMENT PROCEDURE CHECK VIDEO CHECK VIDEO BIAS DRIVE AMP ON THE BRIGHTNESS CIRCUIT MEME me VIDEO PWB...

Page 33: ...BRIGHTNESS CONTROL TR908 TR905 TR906 TR907 VR901 VR906 OR ASSOCIATED CIRCUITRY FAILURES ABNORMAL CONTRAST CONTROL TR742 TR743 TR707 TR708 TR709 VR 701 VR706 OR ASSOCIATED CIRCUITRY FAILURE READ JUST W...

Page 34: ...4 NO BLANKING WORKS VISIBLE RETRACE LINE ON THE BACK RASTER CHECK BLANKING CIRCUIT TR504 ZD402 ON THE DEF PWB D 405 PWE 105 R 522 FAILURE TR745 ON THE VIDEO 761 PWB 122 D 701 D 702 D 703 FAILURE...

Page 35: ...SYNC MEASURED ON THE DEF PWB PWE 105 POINT TR502 BASE FREE RUNNING OR NO PULSE YES H OUTPUT CIRCUIT FAILURE 1 401 FAILURE TR502 OR TR503 FV CONVERTER AND 1502 ASSOCIATED CIRCUITRY FAILURE DEF YOKE FA...

Page 36: ...PROTECTOR ERROR CHECK SYNC CIRCUIT ON THE INTERFACE PWB PWB 110 MEASURED ON THE DEF PWB PWE 105 CHECK TP551 UTE ES SIGNAL CONDITION SEE ALIGNMENT PROCEDURE TP551 16V TP552 10V AT 25KHz HORIZONTAL FREQ...

Page 37: ...ONNECTOR S3 SEE F V CONV CIRCUIT ITEM 6 CHECK SYNC CIRCUIT ON THE INTERFACE PWB VERTICAL CHECK V SYNC MEASURED ON THE INTERFACE PWB PWE 110 POINT CONNECTOR S2 1 401 FAILURE ON THE DEF PWB MEASURED ON...

Page 38: ...WE 105 CHECK F V CONVERTER AND ASSOCIATED CIRCUITRY CHECK H WIDTH CORRECTION CIRCUIT TR554 TR556 C513 C514 C515 C556 ON THE DEF PWB PWE 105 CHECK S CORRECTION FOR H DEF CIRCUIT TR557 TR558 C522 C558 C...

Page 39: ...POINT IC 401 Q PIN Low IC401 C401 C509 ZD401 FAILURE 12 VOLT V SIZE IC 451 CORRECTION IC 553 CIRCUIT V MODE CIRCUIT SEE V MODE BELOW FAILURE IC 401 DEF IC 402 CIRCUIT DY C410 FAILURE V HEIGHT READJUST...

Page 40: ...E DEF PWB PWE 105 T 701 R 794 713 D 714 760 FAILURE b PICTURE CENTERING READJUST SUB H CENTERING SEE ALIGNMENT PROCEDURE CHECK F V CONVERTOR AND ASSOCIATED CIRCUITRY REFER TO ITEM 6 IC 401 CONNECTORL...

Page 41: ...EFA 10 11 SIDE PINCUSHION DISTORTION FAILURE READJUST VR404 ON THE POOR FOCUS READJUST FOCUS CONTROL DEF PWB PWE 105 415 C 416 TR404 TR405 T503 FAILURE FOCUS CONTROL UNIT FOCUS LEAD CRT SOCKET CRT FAI...

Page 42: ...ON CRT CONNECT Z MANUALLY AND CONFIRM DEGAUSSING EFFECT THEN NO EFFECT EFFECT BUT NOT ENOUGH TH601 CONNECTOR Z DEGAUSSING COIL MAKE SURE THAT THE FAILURE MONITOR IS DISTANT FROM ANY STRONG MAGNETIC FI...

Page 43: ...TERFACE PWB PWE 110 IC802 803 804 TR830 SW803 No 2 3 4 TEXT COLOR SW FAILURE 14 ABNORMAL COLOR AT TTL MODE CHECK INTERFACE PWB PWE 110 AT EGA MODE IC806 TR825 FAILURE NO EFFORT BY CONTRAST CONTROL TR8...

Page 44: ...0 seconds Disconnect 2 and insert the dammy Yes resister so that rated current is added between K3 K1 and 2 Figure 1 Next turn the power and check that 85V appears at K1 2 Check No Yes Check that F601...

Page 45: ...OFF wait 5 or As seconds then disconnect C1 C2 Next turn the power ON and Check that 120V appears at C1 Turn the power switch on and Check that D660 about 7V appears at both ends of R620 IC602 Check D...

Page 46: ...next page Table 1 C1 output voltage Horizontal Frequency KHz C1 Voltage V With no input signal about 45V should appears at C1 Figure 1 Rated load current at 1 and K2 terminal 0 015 R1 5 67KQ 7720 04...

Page 47: ...51 1 6 ASSOCI 2 R780 2 20 1 2W ATED C704 706 VIDEO PWB 3 R781 4 79 1 2W VOLTAGE AND ASSOCIATED CIRCUITRY 4 TR741 LINES 12V OF VIDEO AMP CIRCUIT USING PWE 122 CONNEC 12 Volts Supply IC755 INTERFACE 1 C...

Page 48: ...6 2 Setiaqqo xiNoo AS8 11238 3131714 u31V3H OL 3SYHd indlno H3 EHJANOO 1 32 4 2504 INAS A NOI 23143G M31V3H 31Vv3Vd43S INAS 1031409 i 1 4 svu no2 7103102 AY ASV LNOO 9 9 E NI 1VN9IS DNAS 103102 35665...

Page 49: ...PRINTED WIRING BOARD DEFLECTION PWB ARR Y PWE 105 Solder Side HAMM rH NE Piu tite A unap T 5 d 4 Sons i CONTROL PWB ASS Y PWE 125A CRT PWB ASS Y PWE 123 LED PWB ASS Y PWE 125B Solder Side Solder Side...

Page 50: ...SWITCHING REGULATOR POWER SUPPLY PWB ASS Y PWE 107 Solder Side VIDEO PWB ASS Y PWE 122 Solder Side galama ON n 3 4 L J...

Page 51: ...s INTERFACE PWB ASS Y PWE 110 Component Side fim D INTERFACE PWB ASS Y PWE 110 See through view of reverse side components...

Page 52: ...5 109439 20231 102841 Qc O uu o uy un 24 8447 21 H0 X3 9 51 5 OI LIW ONOW N 2LST 194NS 21 4108 4274 5 21 21295022 9129504 12025946 54115045 80115045 OLEASZ7HL 00112456 9664157 755415 059152451 0001215...

Page 53: ...3 8001901 7 LOLYA 30013 318 13 41 9001901 5 LO uA 0114 18253 4 ON 1443 4 30223 74211317 4 1 321235 118 4211017 4 4 3212 314 149 41 22211017 4 4 3015 3lsvISVgA M 12211317 9 00583 il3vIMN4A u 0221047 5...

Page 54: ...8311 13 1120185 2 xog 0132 018 24 428311 13 NO13YV2 CI 411713 31 114 13 4 124 9003 042 4024 2 3N3 14HL3A 9V 17201 852 15201 852 12201 352 5213 72 19599 272 S1VI331 98 9NID2wvd 2 18154 801141 92534 514...

Page 55: ...4 3272 214983272 4110040 005 14095 1005 214983272 10045 005 3143573 14022 ADDS 21 3272 34001 AQOS 21 392 2 09552 027 25562 027 55562 027 556202 7 580112 4 2 01141 42534 03 40 52530 60922809 59921307 1...

Page 56: ...40047 4114 191342 123523027 WIIG 1 13492 62272227 114 1 13872 52022327 1v134W 23 21542327 71911472 94520827 C uv uy C 14023945 397 3114 14138721 71529827 142095 AJOL 4114 2 85025227 10170 ADS 411372 6...

Page 57: ...TTT 149 21 18 0 801084...

Page 58: ...2SA733 C 254952 254953 2541018 256945 25 1473 2561730 2562001 5 23 1 25 430 95 1583 2SC1 2SC3811 B E 2 4 1 5 3 2SA1406 S9 SS NOTE A o E EMITTER 5 BASE 2 COLLECTOR 6 D DRAIN S SOURCE 2SC1941 B 2SD471...

Page 59: ...MODEL 1401 5 DIAGRAM PWE110 757 an EB eee 73v 13 50184 7 5 859 ow 1621 107 SW REG PWB HQ DMACDAR IC ARIN CHIQICOT TA...

Page 60: ...B PWE110 57 TR 5 95 0 57 0552 1 0Vp p EEE PWE 125A CONTROL PWB cm 8 w V POSITION HPOSITION 2 10K ve BRIGHTNESS 10K C1001 1 Q VRS 9 50 500 12555 uPD4066BC vat CONTRAST dys O mS RAIS R416 220 vx 24 19 5...

Page 61: ...R H TY LA _ RUN 590 0 579 1 0v 5 45w p EE CONTROL PWB diede fan y hei oFota Fape e ov 56 624 ov sw ewpsw 6 57 6 6 6 6 6V 6 6 a Je ss DIN 85 EE 16 we 250958 pwE123 Y it i ze xs il m i 3 T 55 K320 Lo as...

Page 62: ...0 xn SHED 12802 SN74LS367 vens x _ 1 532 5 g 25088 pus 1717 im R718 50H zn 220 te O 517407 _ PWE105 S 1 701 L 1 Se REG Qp 1 806 SN74LS136 8 15Vp p T 5 NS SN m N SEPARATE L 35V 753 390 25 1BM PROFESSIO...

Page 63: ...K cn ja 0732 R750 0 01p 100K TRI 2SC945 7 18715 25 945 R748 PWE105 8799 8703 5605 2 106 250381 rs 1111 O 875 R718 i 270 220 bip ae 105 5 0 7 712 25 3811 718 250945 8 59 TR733 25 1406 CENTER RI 73 RIS...

Page 64: ...S SOVOLTS OXCEPT OTMERMISE Che gd 25 4 4 09 2 0V INVERTED W R709 6703 TRST CONTROL HUN THE 97035 01 2 R742 2 2 58 I AME ME CONT 805 NORMAL i AZ F m TRIOS 6 VOLTAGES ANDWAVEFORMS DERTHEFOLLOWING SYNC V...

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