ViewSonic P95f+-1 Service Manual
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ViewSonic P95f+-1 Service Manual

19” digital controlled color monitor
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Service Manual
ViewSonic P95f+-1
P95f+B-1
Model No. VCDTS23956-1
19" Digital Controlled Color Monitor
(P95f+/B_SM_538 - Rev. 1a – May 2002)
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

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  • Page 1 Service Manual ViewSonic P95f+-1 P95f+B-1 Model No. VCDTS23956-1 19” Digital Controlled Color Monitor (P95f+/B_SM_538 - Rev. 1a – May 2002)  ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...
  • Page 2 Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.

  • Page 3: Table Of Contents

    PRECAUTIONS AND NOTICES................1 OPERATING INSTRUCTION..................3 SPECIFICATIONS ....................4 ADJUSTMENT ......................6 CURCIT DESCRIPTION ..................11 TROUBLE SHOOTING ...................14 IC BLOCK DAIGRAM .....................21 PCB LAYOUT......................27 SCHEMATIC DIAGRAM.....................29 EXPLODED PARTS VIEW AND PARTS LIST ............30 SPARE PARTS LIST....................31 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 4: Precautions And Notices

    The use of substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire, X-RAY radiation or other hazards. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 5 The picture tube used in this monitor employs integral implosion protection. Replace with tube of the same type number for continue safety. Do not lift picture tube by the neck. Handle the picture tube only after discharging the high voltage completely. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 6: Operating Instruction

    5. This monitor has power saving function following the VESA DPMS. Be sure to connect the signal cable to the PC. 6. If your P95f/b Series color display requires service, it must be returned with the power cord. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 7: Specifications

    1024(H) 1152(H) Vertical : 1200(V) 1024 (V) 1200 (V) 480(V) 624(V) 768(V) 870(V) Fh (kHz): 106.250 79.976 93.750 35.000 49.725 60.241 68.681 Fv (Hz) : 85.000 75.025 75.000 66.667 74.550 74.927 75.062 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 8 • 15 Dimensions Monitor: Carton: 575(W) × 526(H) × 655(D) mm Monitor: 460(W) × 466(H) × 470(D) mm 16. External Connection : 17. Regulations: UL, CSA, FDA, FCC, TÜV/GS, CE, MPR-II,TCO’95 TCO’99 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 9: Adjustment

    MENU Key until the OSD window changed to the Factory preset window. C. The Factory preset window contains the following functional controls. Select one of the controls. Then press the Up/Down Key to adjust it's value for the optimum picture. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 10 ROTATION, COLOR TEMPERATURE are common mode saved in the memory. Don't needed adjust it individual at every timing Mode and save in the memory. Model select: for factory only, service engineer can't change it. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 11 Top corner H-CONVERGENCE Bottom corner T.L.PURITY V-GAIN T.R.PURITY V-OFFSET B.L.PURITY H-MOIRE REDUCE B.R.PURITY V-MOIRE REDUCE(No use) N.S.PURITY H-FOCUS BURN IN V-FOCUS DEGAUSS ROTATION MOIRE ADJ V-LINEAR SBQ DISABLE LINEAR BALANCE MAX Hfreq ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 12 D. Adjust focus VR2 to a fine horizontal line. E. Repeat step C & D. 5. Purity Adjustment A. Be sure that the display is not being exposed to any external magnetic fields. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 13 C. According to the actual condition of appearance，Aim at corresponding position select the T.L purity , T.R purity , B.L purity , B.R purity , and N.S purity function to correct the purity circumstance. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 14: Curcit Description

    This phase detector is similar to the PLL1 detector and compares the line flyback pulse at pin 1 with the oscillator saw-tooth voltage. The PLL2 detector thus compensates for the delay in the ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 15 Q705, Q706 Brightness Control CKT Q701 Vertical Dynamic Focus Control AMP BD901 Bridge Rectifier for AC Source D909 Rectifier for Start Power Supply D907 Clip Diode for Snubber CKT D906 IC901 VCC Supply ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 16 Push Pull Driver for Q911 D856 ~ D858 DC Restoration for CRT Bias Adjustment D850 , D852,D854 Protection Diode for Q801, Q802, Q803. Q850 ~ Q852 DC Restoration for CRT Bias Adjustment ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 17: Trouble Shooting

    CHECK BRIGHTNESS CIRCUIT Q705, Q706, RELATIVE CKT. Q703, Q706, Q707 RELATIVE CKT. CHECK VOLTAGE OF THE CRT CATHODE ABOUT 60V TO 70V REFER ITEM 6-2 “ABNORMAL REFER ITEM 8-2 DISPLAY” "ABNORMAL DISPLAY" ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 18 CHECK Q801 AND RELATIVE CKT R.G.B. APPROACH STANDARD 3. ABNORMAL DDC (PLUG & PLAY) CHECK IC101 PIN 5 VOLTAGE ABOUT 5V CHECK Q102 GOOD OR FAIL CHECK SIGNAL CABLE OR H802 PIN 3, 4 DATA OUTPUT ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 19 SCREEN ABOUT 500V TO 800V ABOUT 400V TO 700V LESS THAN 500V LESS THAN 400V CHECK FBT RELATIVE CIRCUIT EXCEED 800V EXCEED 700V CHECK FBT & CRT RELATIVE CIRCUIT OR REFER ITEM 7-1 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 20 CHECK THE COLLECTOR VOLTAGE OF Q410 ABOUT 900Vpp AT FH:31KHZ OF Q403 ABOUT 1100Vpp AT FH:31KHz CHECK Q410, D412, C424, H-DY Q408, CHECK T401, T402, Q402, Q403, R449 D408, C418, C419, H-DY ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 21 4. ABNORMAL HORIZONTAL LINEARITY CHECK L401, Q407, R447, C448 CHECK T402, Q413, R448, C428 AND IC101 PIN19~23 CS AND IC101 PIN 20, 21, 22, 23 SWITCHER Q429~Q433 Q415~Q419 CS SWITCHER IC403, Q410, Q411, Q420 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 22 6-7 SIDE-PIN CUSHION DISTORTION READJUST SIDEPIN CHECK IC401, Q404, Q405, Q406 CHECK IC401 RELATIVE CKT RELATIVE CKT. 6-8 POOR FOCUS READJUST FOCUS CONTROL CHECK FOCUS CONTROL UNIT, FOCUS LEAD WIRE, CRT SOCKET & CRT ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 23 CHECK POWER SAVING C.K.T(OFF-MODE) Q911 FAILURE CHECK T901 O/P CHECK Q912, Q914, Q915 CHECK 80V, 55V, 14.5V CHECK 180V, 80V, CHECK Q901 16V, 6.5V CIRCUIT 6.3V CIRCUIT CHECK IC901 IC901 FAILURE CHECK Q901 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 24: Ic Block Daigram

    IC BLOCK DAIGRAM IC101 NT68F65 IC102 M24C08/16 E2/NC IC201/IC202 LM324N ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 25 IC901 3842 SET/ Vref Vref RESET U.V.L.O. INTERNAL LOGLC BIAS 1/2 Vref C.S. COMP COMP. LATCH OSCILLATOR Ct/Rt ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 26 IC402 TC4538 IC601 TDA8172/TDA9302 OUTPUT SUPPLY STAGE FLYBACK VOLTAGE SUPPLY GENERATOR NVERTING INPUT OUTPUT NVERTING NPUT GROUND ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 27 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 28 I C-BUS REGISTERS HORIZONTAL AND VERTICAL SUPPLY COINCIDENCE DETECTOR X-RAY PROTECTION FREQUENCY DETECTOR REFERENCE CONTROL H/C-SYNC INPUT PLL2,PARALLELOGRAM, PLL1 AND HORIZONTAL AND POLARITY PIN UNBALANCE AND H-OUTPUT H-POSITION OSCILLATOR CORRECTION SOFT START STAGE ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 29 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 30: Pcb Layout

    8. PCB LAYOUT C876 R853 FB806 R852 C854 R874 C837 IC801 C858 C855 C829 C853 R838 D856 GND1 C804 C870 GND2 C809 R879 R845 C831 R840 F839-1-2 SDA SCL R844 C838 J809 C832 C816 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 31 COMIN SH-B G.LED COMIN ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 32: Schematic Diagram

    PART NO:41A31-094 07/17/2001 07/19/2001 12/11/2001 01/02/2002 02/18/2002 03/26/2002 1/4W NOTES: This schematic,we cannot guarantee the accuracy of this information, after the date of publication and disclaims liability for changes, errors or ommissions. ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 33: Exploded Parts View And Parts List

    10. EXPLODED PARTS VIEW ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

  • Page 34: Spare Parts List

    11. SPARE PARTS LIST Location Parts No. Specification Remark A9B2X-1HSVSC 19"COLOR MONITOR FOR VIEWSONIC CMA9B2XNVWH CHASSIS FOR A9B2X-1HSVSC PW2 1A 503503 47 SCREW FOR CRT 5A 38 8 RUBBER WASHER 11A 112500 WIRE MOUNT 11A 115 1 FBT CLIP 12A 381500...
  • Page 35 TACT SWITCH TSVB-2 95A205T 3006A Wire Harness C407 67A 309471 3T 470UF +-20% 16V C411 64A176J474 1T .47UF +-5% 100V C421 65A 1K101 2A 100PF 1KV Z5P C422 67A 305470 9 47UF +-20% 100V ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 36 0.01UF 1K Z5U CC905 65A 44210013T 10PF +-5% NPO 50V FOR IC901 CN902 33A3074 1 2P PLUG D421 93A2100 152T BYM26E/PHILIPS 93A1060 652T F R D BYV26C D425 D432 93A1040 252T F.R.D UF4004/GIT ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 37 73A 174 2 GA 25MH FILTER L903 73A 259 2 30UH +/-15% L904 73A 259 2 30UH +/-15% L905 73A 259 2 30UH +/-15% L907 73A 259 2 30UH +/-15% 73A 253121 H 125MH L908 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 38 FOR Signal SW901 77A411A 2 S PUSH SWITCH T401 79A 167121 H DRIVER TRANSFORMER T402 73A 147508 H LINEARITY COIL T403 79AA9B1 1 FBT BY SAMPO T404 79A 167112 GA FOCUS COUPLING COIL ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 39 C211 65A 450104 7T 0.1UF +80-20% 50V Y5V C212 65A 450104 7T 0.1UF +80-20% 50V Y5V C215 65A 450104 7T 0.1UF +80-20% 50V Y5V C216 65A 450104 7T 0.1UF +80-20% 50V Y5V ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 40 100PF +-5% NPO 50V C470 65A 44210113T 100PF +-5% NPO 50V C475 67A 305339 7T 3.3UF +-20% 50V C477 65A 450104 7T 0.1UF +80-20% 50V Y5V C601 64A176J224 1T 0.22UF +-5% 100V ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 41 C952 67A 309100 7T 10UF +-20% 50V C957 65A 44410213T 1000PF +-10% Y5P 50V D102 93A 64 1152T DIODE 1N4148 D201 93A 64 1152T DIODE 1N4148 D202 93A 64 1152T DIODE 1N4148 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 42 93A 64 1152T DIODE 1N4148 D715 93A 64 1152T DIODE 1N4148 D716 93A1100 1A52T BYV26E /PHILIPS D902 93A 64 1152T DIODE 1N4148 D905 93A 64 1152T DIODE 1N4148 D906 93A1030 152T HER104 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 43 TIN COATED J042 95A 90 23 TIN COATED J043 95A 90 23 TIN COATED J044 95A 90 23 TIN COATED J045 95A 90 23 TIN COATED J046 95A 90 23 TIN COATED ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 44 TIN COATED J100 95A 90 23 TIN COATED J101 95A 90 23 TIN COATED J102 95A 90 23 TIN COATED J103 95A 90 23 TIN COATED J104 95A 90 23 TIN COATED ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 45 TIN COATED J164 95A 90 23 TIN COATED J165 95A 90 23 TIN COATED J166 95A 90 23 TIN COATED J167 95A 90 23 TIN COATED J168 95A 90 23 TIN COATED ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 46 57A 446 1 T TRAN.2SC1213AC/HITACHI Q216 57A 619 1 T 2SA673AC/HITACHI Q217 57A 446 1 T TRAN.2SC1213AC/HITACHI Q218 57A 619 1 T 2SA673AC/HITACHI Q219 57A 446 1 T TRAN.2SC1213AC/HITACHI Q220 57A 619 1 T 2SA673AC/HITACHI ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 47 61A 60210252T CFR 1K OHM+-5% 1/6W R134 61A 60210552T CFR 1M OHM+-5% 1/6W R135 61A 17222052T CFR 22OHM+-5% 1/4W R136 61A 60210152T CFR 100 OHM+-5% 1/6W R137 61A 60210152T CFR 100 OHM+-5% 1/6W ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 48 CFR 4.3K OHM+-5% 1/6W R247 61A 60222252T CFR 2.2K OHM +-5% 1/6W R249 61A 60210352T CFR 10K OHM+-5% 1/6W R250 61A 60243252T CFR 4.3K OHM+-5% 1/6W R251 61A 60222252T CFR 2.2K OHM +-5% 1/6W ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 49 61A 60224352T CFR 24K OHM +-5% 1/6W R415 95A 90 23 TIN COATED R416 61A 60247252T CFR 4.7K OHM+-5% 1/6W R417 61A 60210352T CFR 10K OHM+-5% 1/6W R418 61A 17222252T CFR 2.2KOHM+-5% 1/4W ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 50 61A 60227252T CFR 2.7K OHM+-5% 1/6W R488 61A 60247252T CFR 4.7K OHM+-5% 1/6W R489 61A 60247252T CFR 4.7K OHM+-5% 1/6W R490 61A 17210052T CFR 10OHM+-5% 1/4W R491 61A 17210152T CFR 100OHM+-5% 1/4W ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 51 CFR 10 OHM +-5% 1/6W R739 61A214Y75352T MGFR 75K OHM +-5% 1/4W R740 61A 60247152T CFR 470 OHM +-5% 1/6W R741 61A 17210152T CFR 100OHM+-5% 1/4W R742 61A 60251152T CFR 510 OHM +-5% 1/6W ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 52 93A 39 8252T HITACHI HZ12A2 ZD404 93A 39 7752T HZ5C1 7.78-8.19V DIODE ZD701 93A 39 9152T MTZJ8.2B/ROHM ZD702 93A 3951352T HZ6C2/HITACHI ZD901 93A 39 5852T ZD HZ24-2/HITACHI ZD902 93A 3911352T ZD HZ20-2/HITACHI ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 53 64A176J103 1T 0.01UF 5% 100V C818 64A176J104 0T 0.1UF 5% 63V C819 65A 44210113T 100PF +-5% NPO 50V C820 65A 4501047TV 0.1UF +80-20% 50V Y5V C821 65A 4501047TV 0.1UF +80-20% 50V Y5V ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 54 DIODE 1N4148 D804 93A 64 1152T DIODE 1N4148 D805 93A 64 1152T DIODE 1N4148 D806 93A 64 1152T DIODE 1N4148 D808 93A 64 1152T DIODE 1N4148 D809 93A 64 1152T DIODE 1N4148 ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 55 TRANSISTOR BF422/PHLIPS Q852 57A 493 10 T TRANSISTOR BF422/PHLIPS Q853 57A 419 P T TRAN 2SC945P/NEC TAPING Q854 57A 419 P T TRAN 2SC945P/NEC TAPING Q855 57A 419 P T TRAN 2SC945P/NEC TAPING ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 56 R862 61A 17215352T CFR 15K OHM +-5% 1/4W R863 61A 17268152T CFR 680 OHM +-5% 1/4W R864 61A 17268152T CFR 680 OHM +-5% 1/4W R865 61A 17268152T CFR 680 OHM +-5% 1/4W ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 57 705A9B1VC93 01 DB901 ASS'Y 90A6038 1 HEAT SINK M1A1130 7128 SCREW 3.0x8 DB901 93A 50460 7 GBJ4J 705A9B2XC57 1V Q410/Q427/D412 ASS'Y 32A3028 7 MICA 52A6016 4 SPRING PIECE 90A 36750906P HEAT SINK ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...
  • Page 58 R716 61A 17215352T CFR 15K OHM +-5% 1/4W TP902 95A201F 50252 25"PULSE LINE 705A9B1VR56 01 IC803 ASS'Y 90A 355 2 A HEAT SINK M1A1730 6128 SCREW M3x6 IC803 56A 551 5 LM2435T ViewSonic Corporation P95f+/B-1 Confidential – Do Not Copy...

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