Service Manual ViewSonic P90f-1 Model No. VCDTS23483-1 19” Digital Controlled Color Monitor (P90f_SM_525 - Rev.
Copyright Copyright 2002 by ViewSonic Corporation. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of ViewSonic Corporation.
TABLE OF CONTENTS 1. PRECAUTIONS AND NOTICES...........................................................................1~2 2. SPECIFICATIONS ....................................................................................................3 3. TIMING CHART ........................................................................................................4 4. CONTROL LOCATION AND FUNCTIONS ..........................................................5~8 5. MECHANICAL PARTS & MECHANICAL ASSEMBLY .........
1. PRECAUTIONS AND NOTICES 1.1 SAFETY PRECAUTIONS 1) Observe all cautions and safety related notes located inside the display cabinet and on the displaychassis. 2) Operation of this display outside the cabinet or with the cover removed, involves at shock harzard from the display power supplies. Work on the display should not be attempted by anyone who is not thoroughly familiar with precautions necessary when working on high voltage equipement.
1.8 Voltage Breakdown Test Connent the live and neutral connections together. Switch the monitor on/off switch to on Apply 1500VAC RMS or 2250VDC, 50Hz for one minute between live and neutral shorted together and earth. Ensure no voltage breakdown occurs. 1.9 Earth Resistance/Continuity Test Measure the resistance between the signal cable metal shell and the earth pin in the A.C. socket. At a current of 25 amperes the resistance should be less than 100m.
2. SPECIFICATIONS CDT Scanning Freq. Video amplifier Resolution Modes Power User controls Size and deflection angle Screen type Horizontal pitch / Dot pitch Surface treatment Transmission rate Horizontal Frequency Vertical Frequency Applicable pixel rate Maximum Factory preset/User modes AC input range Max. power consumption Suspend Power Management Off Power Switch 19 inch 90 degree Flatron 0.
3. TIMING CHART Mode 1~ 13 : Preset Mode Mode 14,15,16: Only for H-size limitation and Auto-size 1 Mode NO. 25.175 Pixel Clock 640x400 Resolution 31.469 Horizontal Frequency 31.779 (A) Horizontal Period (B) Horizontal Pulse 3.813 Width (C) Horizontal Back Porch 1.907 (D) Horizontal Active Area 25.422 (E) Horizontal Front Porch 0.637 (F) H. Sync. Polarity 70.087 Vertical Frequency 14.269 (O) Vertical Period 0.064 (P) Vertical Pulse Width 1.112 (Q) Vertical Back Porch 12.712 (R) Vertical Active Area 0.
4. CONTROL LOCATION AND FUNCTIONS Front OSD ON/OFF Power S.
Function Keys Description: (a) Key function: Power switch: This is a “software Key”, Turns the display on and off. The power indicator will lit “Green” when the display is on. “1” key: Turn on /off OSD menu / Exist this menu to go back previous menu. : Down side to select item / decrease value. : Up side to select item / increase value. . keys are direct access for Contrast and Brightness adjustment. (b) “2” key: a select key / go to next sub menu.
In main menu (1), selected “main menu (1) and then pressing up or down key to the top or bottom of this menu, the next pressing will go to main menu(2) as below to others FIGURE 2 ( USER MODE OSD MENU 2 ) In main menu 2, if selected “ VIEWMATCH COLOR”, then pressing “2” key will display color sub menu as following. The three default color modes such as 9300k, 6500k, 5000k only can be set in factory, means, they can read and display only in this menu.
In main menu (2), if selected “LANGUAGE”, then pressing “2” key will display next sub menu as below to language. Select as below: If selected “view meter”, and then pressing “2” key will display next sub menu as below to show timing information.
. 5.
P90f Mechanical Parts list NO. M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 M13 M14 M15 M16 M17 M18 S1 S2 S3 S4 S5 S6 DESCRIPTION FRONT COVER BACK COVER FUNCTION KEY POWER LIGHT PIPE POWER KEY RUBBER WASHER RING CABLE LEFT BRACKET SPRING FINGER MAIN CHASSIS BRACKET RIGHT BRACKET REAR BRACKET PCB SPACER SUPPORT SWIVEL WASHER SWIVEL CLAMP SWIVEL BASE FOOT PAD SCREW BTBW M3X10 SCREW PHB+CW+RW M5X24 SCREW PZP M4X14 SCREW BTBW M3X8 SCREW PZP M4X16 SCREW PZP M4X20 ViewSonic Corporation 10 PART NO.
6. CONNECTOR PIN ASSIGNMENTS 6-1 The Pin-assignments of the 15pin D-sub male miniature connector are shown below: 1 6 11 6-2 15 Pin Min D-sub male connector PIN NO PIN DESCRIPTION 1 RED 2 GREEN 3 BLUE 4 NO CONNECTION 5 GROUND 6 R-GROUND 7 G-GROUND 8 B-GROUND 9 +5V PC97 10 GROUND 11 NO CONNECTION 12 SDA FOR DDC 13 H.SYNC. 14 V.SYNC.
7. MONITOR INSTALLATION Monitor Installation How to Install the Connections to your PC 7-1. Your monitor has two connection cables: .A signal cable which connects to your computer's VGA connector. Which is colored blue. 7-2. To ensure your safety when connecting the cable, always follow these six steps: (Ⅰ). Turn off the power to your computer and peripheral equipment. (Ⅱ). Position the monitor and computer so that you can easily access the rear panel of each unit. (Ⅲ).
8. ELECTRONIC CIRCUIT DESCRIPTION 8-1 SWTCHING MODE POWER SUPPLY SECTION 8-1-1 Features 1. AC input: 100Vac – 240Vac. 2. When Power Saving activated, change feedback to reduce the output voltage and shut down timebase and video circuit operation, thus power reduce to be less than 5W. 8-1-2 Circuit description: 8-1-2-1 EMI Noise Filter 8-1-2-2 C802 and C803 build as Y capacitors, C804 is X capacitor, L801 and L802 are Common Mode Choke, those build as a two steps Noise filter.
8-1-2-8 Under-voltage protection If Ac input voltage is too low, voltage across C844 will be too low that force Q814 to turn off and voltage across C822 rise up. When pin2 of UC3842 rise up to 2.5V, pin6 stop to drive output. Thus Q801 is protected. 8-1-2-9 Synchronization circuit UC3842 working frequency is fixed at 33.3 Khz by adjusting R817A. 8-1-2-10 Power Saving control At normal operating state, Q811 on, Q812 off, output voltage are normal.
When the sync signals are both exist, then IA01 will send Low at pin 13 to switch on the relay BR801 via Q104 and Q104A and thus produce a very high current circulate the degaussing coil and this signal will sustain for a certain period. Thus the display is demagnetized The sync signals are buffered by IA01 and output at pin 41, 42 to synchronize the timebase controller I301. IA01 will also initiate I301 by IIC bus build by pin 28(C.SCL), pin 27(C.SDA).
H. sync., V. sync feed from IA01 pin41,42 to I301 pin1 ,2. When the H. Freq. is over 110kHz or below 30kHz, I301 will shut down to protect the Horizon. output CKT from being damaged. The Horizon. oscillator is build by C303 and R301 and determine the Horizon. frequency range. C304, C305, R302 build up PLL 1 loop filter, Via Icon, the IIC-bus allows a linear adjustment of the Horizon. position by comparing relative phase of horizontal Sync. and oscillator saw-tooth(in PLL 1 loop) and feedback from Horizon.
8-3-2 HORIZONTAL OUTPUT STAGE The horizon. drive pulse output at pin 26 is pulled up to 12V to drive Q404 and then coupled via T401 to output transistor Q403 for on-off control. Thus saw-tooth current flow through Horizon. Deflection Yoke is obtained. The function of C-correction is to correct the asymmetrical non-linearity of picture. L402, L406 and Horizontal Yoke are in series for C-correction.
converter to drive horizontal deflection output Q433 via L401. The width, pincushion, trapezium information are modulated on the DC converter by changing the duty of the B+ drive. Moreover, the B+ duty is controlled with a charging circuit at same time. When the Q302 is OFF, the voltage at pin16 of I301 will linearly increase with a charge time of determining by R326 and C308 to modulate B+ duty Horizontal DC centering circuit is build by Q423, Q424.
When the voltage at pin 17 of I501 drops under 6V, contrast of display start to decrease. R167 set the light output where the contrast (or full white screen light output) start to drop. If the beam current is too high, Q118 will conduct and shutdown PWM controller (I101). Pin 7 of FBT provide negative bias for Grid 1 of CDT: Pin5 of I310 provide vertical blanking to base of Q108 via D113. Q108 collector pulse drops 63V to give a proper blanking level at Grid 1 of CDT.
Brightness control: Pin 2 of IA01 provides Brightness control. It feed through P903 to base of Q960 to vary R, G, B bias at cathodes simultaneously. 8-7 Convergence circuit Pin1 of IA01 provides a voltage (0 to 5V) to Q426, Q427, and Q428, then drive the Horizon. convergence coil of deflection yoke through P420.. Pin39 of IA01 provides a voltage (0 to 5V) to Q305, Q306, and Q307, then drive the vertical convergence coil of deflection yoke.
9. ADJUSTMENT The adjustment data with tolerance is only for setting to the optimum performance. SERVICE ADJUSTMENT LOCATIONS Main Board (parts side view)---PWB-0404 F1 R454 F2 G2 R167 R176 FBT Power Transformer R827 R817A PWB-0404 F1--------Variable Resistor on top of FBT for Static Focus adjust. F2--------Variable Resistor on middle of FBT for Dynamic Focus adjust. G2--------Variable resistor on bottom of FBT for Grid 2 set up. R167-----Full white brightness adjust.
9-2 High voltage a). Apply PC signal with 31.47kHz / 60Hz(640 x 480) Mode and full white pattern to the monitor. b). Connect AC input and power on the monitor. c). Brightness at center, contrast at maximum. d). Adjust R176 for Normal high voltage = 26.2kV 9-3 Full brightness setting (Timing Mode 91kHz /85Hz 1280 x 1024 mode) a). Apply Chroma 2250 pattern generator or PC signals with full white pattern to the monitor. b). Connect AC input and power on the monitor. c).
Item (3)Horizontal. Width Adj. (Every Mode) (4) Horizontal Phase Adj. (Every Mode) Adjustment Description SPEC. *Pattern: Crosshatch *Brightness: Center. Contrast: Max. *Enter Pre-set Mode *Select Horizontal Width Icon. *Press UP/DOWN to get 353mm 353 ±3 mm (Every Mode) *Pattern: Crosshatch *Brightness: Center. Contrast: Max. *Select Horizontal Phase Icon. * Press UP/DOWN to center display. A |A-B| <= 2mm (Every Mode) (5) Vertical Height Adj. *Pattern: Crosshatch (Every Mode) *Brightness: Center.
Item Adjustment Description SPEC. (b)Parallelogram (Every Mode) *Parallelogram Adj.: Select Parallelogram Icon Press UP OR DOWN Key. to correct the Orthogonality to the best. (c)Pincushion Adj. (Every Mode) *Pincushion Adj.: Select Pincushion Icon Press UP OR DOWN Key, to straighten Side Pincushion. (d)Trapezium Adj. (Every Mode) *Trapezium Adj.: Select Keystone Icon Press UP OR DOWN Key, to make picture geometric distortion the best. (e)Pin−corner Adj.
Item .9300°K bias Adj. Adjustment Description SPEC. *Enter preset OSD menu. *Mode 9: 1280 x 1024 Pattern : 11(Black pattern) *Brightness : set at 107.. Contrast : Max.. *Select color Adj. Icon. Select 9300°K first. The R,G,B bias initial setting should be in the 160 DAC value. Adj the screen VR on FBT to get 0.7+/-0.1FL *Adj. R,G,B bias until x = 0.283+/- 0.006 y = 0.297+/-0.006 Y =0.7 +/- 0.1 Ft/L .6500°K bias 5000°K bias ADJ (11).Brightness *Enter preset OSD menu.
.9300°K Gain Adj. .6500°K Gain 5000°K Gain ADJ (12) ABL setup *Enter preset OSD menu *Mode 9 : 1280 x 1024 *Pattern : 70mm x 70mm White block. *Brightness : 0.06FL(background) *Contrast : Max.. *Select color Adj. Icon. *Select 9300°K firstly *Disable R,B signal; only Green signal left. *Adjust Green Gain to get 28FL around *Adj. R,B Gain until x=0.283+/-0.006 y=0.297+/-0.006 Y = 37 to 42FL *Enter preset OSD menu *Mode 9: 1280 x 1024 *Pattern : 70mm x 70mm White block. *Brightness : 0.
(16) H Moire setting Normally set at 30 for resolution 1280 x 1024 mode (mode 8 and 9) And zero for all other modes (17) V.
10. TROUBLESHOOTING FLOW CHART SECTION 1 Q811 on, Q812 off NO LED light up ? NO Fuse open ? Check R807,R831 Q801 YES YES Check D801,D802 ,D803,D800? LED color is Amber ? YES C825 = 190V approx. ? NO NO Q811 on NO Check pin 23 of IA01 ( > 3.3V) YES YES pin 2 of I803 > 2.
SECTION 2 Blank Screen LED Amber YES Check signals from PC Check by entering Preset mode to obtain “No NO No NO Check pin 23,21of IA01 pin17= High, pin18= Low Check if XA01 waveform exist ? YES Go to SECTION 1 SMPS troubleshooting chart ViewSonic Corporation NO Check B+ (5V) to IA01 exist ? YES Replace MCU (IA01) 29 Confidential – Do Not Copy P90f-1
SECTION 3 LED Green No Raster Is DC Voltage at Pin2 of FBT Proper(80 V Approx.) YES NO Is the voltage at collector of Q433 proper ? YES NO Check SMPS DC O/P (SECTION 1) Go to SECTION 4 No raster ,but High Voltage exist NO Is the voltage 6.3V at heater? Check S.M.P.S (SECTION 1) YES Check P902 connection OK ? YES Check P904 connection OK ? YES Check Q121 output 300 Vp-p approx. NO Check I101 pin 2 > 2.
SECTION 4 No Raster High Voltage exist NO G2 = 400 to 650 V (Do not clockwise turn the Screen VR to extreme ) Replace T101(FBT) YES YES I301 Pin3 HUNLOCK HIGH ? Check IIC bus from Pin27,28 of IA01 to IA02,I301,I901 No NO P410 CONNECTION proper ? YES Check IA01 and its peripheral CKT NO TO SECTION 6 : Horiz. TO SECTION 5 : Vert. Line, No Vert. output line, No Horiz.
SECTION 5 Display is Vertical. Line (No Horizontal output) DC at Source of Q402 = 190Vapprox.
SECTION 6 Display is Horizontal. Line, (No Vertical. output) NO Pin 2 of I310 = 15V approx. Pin4 of I310 = -15.V approx.
SECTION 7 No video Raster exist Check OSD (I903) NO YES Check if Contrast is too low ? Check IIC Bus (P903A to P904). Press Enter key , there should be a sequential pulse appear for IIC communication YES Check R,G,B at CDT socket NO Check I904 input NO YES Check 82V, 190V for I904 and their peripheral CKT Check R,G,B signals at P901 YES Check I904 R,G,B output SECTION 8 No OSD NO Replace I904 Check IIC Bus (P903A to P904).
11. REPLACEMENT PARTS LIST WARNING: Replacement parts that have special characteristics important to safety should be replaced only with types identical to those in the original circuit or specified in the parts list. Before replacing any of these components, read carefully the product safety precautions.
CKT NO. Part no. Description CKT NO. Part no. Description C136 5213622091 C. EL 50V 22UF M C391 5275122191 C. ME 63V 0.22UF J C137 5271147401 C. ME 100V 0.47UF J C400 5223433301 C. PO 250V 33000PF J C139 5214019612 C. EL 100V 330UF M C401 5213447091 C. EL 25V 47UF M C301 5276110491 C. ME 100V 0.1UF J C401A 5236310491 C. BL 50V 0.1UF Z C302 5221168291 C. PO 50V 6800PF J C402 55206410112 C. EL 250V 100UF M C303 5247082191 C. CE 50V 820PF J C402A 5232310301 C.
CKT NO. Part No. Description CKT NO. Part No. Description C803A 5230105401 C. CE 400Vac 2200PF M C848 5233318191 C. CE 1KV 180PF K C804 5270112601 C. ME 275Vac 0.22UF K C849 5213633091 C. EL 50V 33UF M C804A 5270111091 C. ME 275Vac 0.1UF K C850 5230105501 C. CE AC250Vac 4700PF M C805 5232310301 C. CE 500V1000PF K C851 5230105501 C. CE AC250Vac 4700PF M C806 5232310301 C. CE 500V1000PF K C852 5213510213 C. EL 35V 1000UF M C809 5210313900 C.
CKT NO. Part no. Description CA26 5242210191 C. CE 50V 100PF J CA25 5242210191 C. CE 50V 100PF J CA27 5231310291 C. CE 50V 1000PF K SEMICONDUTOR DIODE CKT NO. Part no.
CKT NO. Part no.
CKT NO. Part no. Description D820 (RB) 6613002248 DIODE SWITCHING 1N4935 D820 (RC) 6611035644 DIODE RECTIFIER RGP10D D821* 6613003032 DIODE SWITCHING 1N4148-TD 75V 150mA (RA.RB.RC) D822* 6611007240 DIODE RECTIFIER 1N4002RL(RA.B.RC.RD) D823 (RA) 6615006443 DIODE ZENER RD6.2EB2-T1 5.99-6.24V D823 (RB) 6615009756 DIODE ZENER HZ6C2-TD 6-6.
IC CKT NO. Part no. Description I101 (RA) 6644063111 IC LINER UC3842BN I101 (RB) 6644063112 IC LINER DBL3842 I301 6644076308 IC LINER DEFLECTION TDA9116 SDIP32 I310 6644076000 IC LINER V-O/P TDA8172 7P I802 6640003800 IC VOLTAGE REGULATOR LM1117T 5.
TRANSISTOR CKT NO. Part no. Description Q104 6621015332 TRANSISTOR NPN HF 2SC1815Y Q104A 6621015332 TRANSISTOR NPN HF 2SC1815Y Q104A 6621015335 TRANSISTOR NPN HF H945P Q105 6621040730 TRANSISTOR NPN HF MPSA44 500V 0.
CKT NO. Part no.
COIL CKT NO. Part no. Description B801 5062122949 CORE, BEAD RH03506ST-B L101 5064433025 COIL, PEAKING TRF-8330J 33UH J L102 5064433025 COIL, PEAKING TRF-8330J 33UH J L103 5062122949 CORE, BEAD RH03506ST-B L105 5062124403 COIL, CHOKE B-6-22A (0), BC0610R6HB-B3 L106 5062122946 CORE, BEAD RH03506AT-B L300 5062118309 CORE, BEAD RH035047ST-Y7 L301 5064433025 CORE, BEAD TRF-8330J L401 5062419900 TRANS, HOR. DRIVG TLN-199 L402 5062230400 COIL, HOR.
RESISTOR CKT NO Part no. Description CKT NO Part no. Description R100 5130420206 R. CF 2W 2K J R159 5142110095 R. CF 1/6W 10 J R100A 5130420206 R. CF 2W 2K J R160 5142147195 R. CF 1/6W 470 J R101 5142433490 R. CF 1/2W 330K J R161 5142110195 R. CF 1/6W 100 J R102 5142433490 R. CF 1/2W 330K J R162 5142822995 R. CF 1/4W 2.2 J R103 5142162195 R. CF 1/6W 620 J R163 5130322203 R. MOF 1W 2.2K J R104 5142818395 R. CF 1/4W 18K J R164 5130310403 R.
CKT NO Part no. Description CKT NO Part no. Description R322 5142110195 R. CF 1/6W 100 J R432 5142815495 R. CF 1/4W 150K J R323 5142110195 R. CF 1/6W 100 J R437 5142847395 R. CF 1/4W 47K J R324 5142815395 R. CF 1/4W 15K J R438 5142815495 R. CF 1/4W 150K J R325 5142815395 R. CF 1/4W 15K J R439 5142110395 R. CF 1/6W 10K J R326 5142127395 R. CF 1/6W 27K J R440 5142110395 R. CF 1/6W 10K J R327 5142139295 R. CF 1/6W 3.9K J R441 5142110395 R.
CKT NO Part no. Description CKT NO Part no. Description R806 5142882495 R. CF 1/4W 820K J R850 5142110295 R. CF 1/6W 1K J R807 5130324803 R. FU MOF 1W 0.24 J R852 5142110395 R. CF 1/6W 10K J R808 5142815395 R. CF 1/4W 15 K J R856 5142810395 R. CF 1/4W 10K J R809 5142851495 R. CF 1/4W 510K J R857 5142812295 R. CF 1/4W 1.2K J R810 5142851495 R. CF 1/4W 510K J R862 5142151295 R. CF 1/6W 5.1K J R811 5130410303 R. MOF 2W 10K J R866 5130539903 R. MOF 3W 3.
CKT NO Part no. Description CKT NO Part no. Description RA23 5142110395 R. CF 1/6W 10K J RA39 5142110295 R. CF 1/6W 1K J RA24 5142151195 R. CF 1/6W 510 J RA40 5142810195 R. CF 1/4W 100 J RA24A 5142156295 R. CF 1/6W 5.6K J RA41 5142110395 R. CF 1/6W 10K J RA25 5142147295 R. CF 1/6W 4.7K J RA42 5142168395 R. CF 1/6W 68K J RA26 5142151295 R. CF 1/6W 5.1K J RA42A 5142822295 R. CF 1/4W 2.2K J RA27 5142110295 R. CF 1/6W 1K J RA43 5142139295 R. CF 1/6W 3.
BASE & PIN CKT NO Part no. Description P301 5057415224 WIRE ASS’Y W/15P CONNUL/CSA1007#24 L=330MM P302 5057404300 WIRE ASS’Y W/15P CONN UL/CSA1007#24 JST/JAE 400mm P400 5056203901 PIN RT-01N-2.3A P401 5056407801 BASE & PIN 2.36mm 4P(UL/CSA/TUV) P409 5056203901 PIN RT-01N-2.3A P410 5056203901 PIN RT-01N-2.
ASSEMBLY PCB-PFC CKT NO Part no. Description C1 5214147012 C. EL 100V 47UF C2 5213422191 C. EL 25V 220UF D1 6611035644 RGP10D D2 6613003032 1N4148 D3 6613003032 1N4148 D4 6615007834 HZ5C1 D5 6615007834 HZ5C1 I2 6644007300 LM358P P01 5056415567 BASE & PIN P02 5056405309 BASE & PIN Q1 6621015332 TRANSISTOR NPN 2SC1815Y Q2 6621015332 TRANSISTOR NPN 2SC1815Y R1 5142111495 R. CF 1/6W 110K J R10 5142113395 R. CF 1/6W 13K J R11 5142110295 R. CF 1/6W 1.
ASSEMBLY PCB PURITY ASSEMBLY, PCB-PURITY 5097609000 CKT NO. Description Part no. CAPACITOR C501 5236310491 C. BL 50V 0.1UF Z C502 5236310491 C. BL 50V 0.1UF Z C503 5236310491 C. BL 50V 0.1UF Z C504 5236310491 C. BL 50V 0.1UF Z C505 5236310491 C. BL 50V 0.1UF Z C506 5236310491 C. BL 50V 0.1UF Z C507 5236310491 C. BL 50V 0.1UF Z C508 5236310491 C. BL 50V 0.1UF Z C509 5236310491 C. BL 50V 0.1UF Z C510 5236310491 C. BL 50V 0.1UF Z C511 5236310491 C. BL 50V 0.
CKT NO. Part no. Description R503 5142127095 R. CF 1/6W 27 J R504 5142127095 R. CF 1/6W 27 J R505 5142827095 R. CF 1/4W 27 J R506 5142827095 R. CF 1/4W 27 J R507 5142827095 R. CF 1/4W 27 J R508 5142827095 R. CF 1/4W 27 J R509 5142827095 R. CF 1/4W 27 J R510 5142827095 R. CF 1/4W 27 J R511 5142827095 R. CF 1/4W 27 J R512 5142827095 R. CF 1/4W 27 J R513 5142127095 R. CF 1/6W 27 J R514 5142127095 R. CF 1/6W 27 J R515 5142127095 R. CF 1/6W 27 J R516 5142127095 R.
ASSEMBLY PCB-CRT DRIVE (PWB-0414) CAPACITOR CKT NO Part no. Description CKT NO Part no. Description C900 5242210191 C. CE 50V 100PF J C932 5236310491 C. BL 50V 0.1UF Z C900A 5242210191 C. CE 50V 100PF J C933 5216301091 C. EL 200V 1UF M C901 5213601091 C. EL 50V 1UF M C933A 5232356191 C. CE 500V 560PF K C902 5236310491 C. BL 50V 0.1UF Z C934 5213333191 C. EL 16V 330UF M C903 5216301091 C. EL 200V 1UF M C934B 5233310291 C. CE 1KV 1000PF K C904 5231347191 C.
SEMICONDUCTOR. DIODE CKT NO Part no. Description D901* 6613003032 DIODE SWITCHING 1N4148-TD 75V 150mA (RA.RB.RC.RD) D902* 6613003032 DIODE SWITCHING 1N4148-TD 75V 150mA (RA.RB.RC.RD) D903# 6611036040 DIODE RECTIFIER BAV21 D904 6613004934 DIODE SWITCHING 1SS133 D913* 6613003032 DIODE SWITCHING 1N4148-TD 75V 150mA (RA.RB.RC.RD) D931* 6613003032 DIODE SWITCHING 1N4148-TD 75V 150mA (RA.RB.RC.RD) D932* 6613003032 DIODE SWITCHING 1N4148-TD 75V 150mA (RA.RB.RC.
CKT NO Part no. Description L941 5062133201 BF30TA-2.5 X 3 X 1B L942 5064456845 COIL, PEAKING TRF-8568M 0.56UH K L951 5062122902 CORE,BEAD BL03RN2-R62T4 L953 5064010029 COIL, PEAKING TRF-3100J 10UH J L965 5062122946 CORE, BEAD RH03506AT-B L971 5062133201 BF30TA-2.5 X 3 X 1B L972 5064456845 COIL, PEAKING TRF-8568M 0.
RESISTOR CKT NO Part no. Description CKT NO Part no. R900 5142110295 R. CF 1/6W 1K J R939 5142868195 R.CF 1/4W 680 J R901 5142175095 R. CF 1/6W 75 J R939A 5142113295 R. CF 1/6W 1.3K J R902 5142113395 R. CF 1/6W 13K J R940 5062122949 BEAD CORE R903 5142118295 R. CF 1/6W 1.8K J R940A 5142191095 R. CF 1/6W 91 J R904 5142822095 R. CF 1/4W 22 J R942 5142113395 R. CF 1/6W 13K J R905 5142182295 R. CF 1/6W 8.2K J R943 5142824095 R. CF 1/4W 24 J R905A 5142113495 R.
RESISTOR CKT NO Part no. Description R987 5142120095 R. CF 1/6W 20 J R988 5142120095 R. CF 1/6W 20 J R991 5142139495 R. CF 1/6W 390K J R992 5142139995 R. CF 1/6W 3.9 J R993 5142110195 R. CF 1/6W 100 J R994 5142110195 R. CF 1/6W 100 J R995 5142856006 R. CF 1/4W 56 J R996 5142136095 R. CF 1/6W 36 J R997 5142136095 R. CF 1/6W 36 J R998 5142136095 R. CF 1/6W 36 J CKT NO. Part no.
Main PCB circuit(PWB-0404) 12.
Video drive circuit(PWB-0414) ViewSonic Corporation 59 Confidential – Do Not Copy P90f-1
Purity Circuit (PWB-0417) ViewSonic Corporation ViewSonic Corporation 60 Confidential – Do Not Copy P90f-1
PFC Circuit (PWB-0344) ViewSonic Corporation ViewSonic Corporation 61 Confidential – Do Not Copy P90f-1
14.
Video drive circuit(PWB-0414) 1 ViewSonic Corporation 63 Confidential – Do Not Copy P90f-1
ViewSonic Corporation 64 Confidential – Do Not Copy P90f-1
Purity Circuit (PWB-0417) ViewSonic Corporation 65 Confidential – Do Not Copy P90f-1
PFC Circuit (PWB-0344) ViewSonic Corporation 66 Confidential – Do Not Copy P90f-1
