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Huang Approved by Jack Lin Date06/29/01 REV0 Revision Change Record: REV. 00 Change Contents Date 06/29/01 ' " , ----------------------------------------------------------- . /0------------------------------------------------------------------- . + " 1---------------------------------------------------------------------------- . 2 " -------------------------------------------------------------------- . . ------------------------------------------------------------------------- . $ 3 ! ------------------------------------------------------------------- . 4 3 ------------------------------------------------------------------- . 5 " -------------------------------------------------------------------------------- . & " ------------------------------------------------------------------ $ '# 6 --------------------------------------------------------------- $ '' " ----------------------------------------------------------------------- $ !" # $ +' / ! ----------------------------------------------------------------------- $ + 7 ! ------------------------------------------------------------- ++ "---------------------------------------------------------------------------------- $ $ % #" # & 2' 3 0 ------------------------------------------------------------ 4 2 0 ------------------------------------------------------------ 4 ##### ' .' 8 ---------------------------------------------------------------------------- 5 . - ------------------------------------------------------------------------- 5 .+ " ------------------------------------------------------------------------------- 5 .2 ------------------------------------------------------------------- 5 .. / -------------------------------------------------------------- 5 .$ ----------------------------------------------------------------- 5 .4 3----------------------------------------------------------------------- 5 .5 7 0 ----------------------------------------------------------------- 5 $ ### ( $' (8 / -------------------------------------------------------------------- & $ ! -------------------------------------------------------------------- & $+ ---------------------------------------------------------------------- $2 8 -------------------------------------------------------------------------------------- & $. 8 1 ------------------------------------------------------------------ & $$ 9 ------------------------------------------------------------------- & $4 ------------------------------------------------------------------------------- + & & $5 1! ------------------------------------------------------------------------- '# $& / ------------------------------------- '# $'# 1 --------------------------------------------------------------------- '# $'' 8 // --------------------------------------------------------------------------- '# $' ------------------------------------------------------------------------- '# $'+ ---------------------------------------------------------------- '# $'2 ) / ------------------------------------------------------------- '# $'. : ----------------------------------------------------------------------------------- '' $'$ ! ----------------------------------------------------------------------- '' $'4 ---------------------------------------------------------------------------------- '' $'5 ( --------------------------------------------------------------------------- '' $'& / ---------------------------------------------------------------- '' $# - ! ------------------------------------------------------------------- '' $' ------------------------------------------------------------------------- '' & )#" # 4' 8 --------------------------------------------------------------------------- ' 4 ;( !<------------------------------------------------------------------ ' 4+ -------------------------------------------------------------------------------- ' ' )!*###+#, ( -#.# &' ) ; - <----------------------------------------------------------- '+ & --------------------------------------------------------------------- '+ &+ ---------------------------------------------------------------------- '+ #/##!)#/##! 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×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ser control BOSD function control Power switchSoft power control Function select buttonMENU↵ Adjustment control button 1Power switchPush-on / push-off switch for soft power control 2LED indication Status LED Power on Green Power saving Amber Over range freq. Amber Power off Off 3Function select button Press the ‘MENU’ button to display OSD menu Press the ‘’ button to select menu function or sub-function Press the ‘↵’ button to enter the select function 4Adjustment control button Push the increased ‘’ or decrease ‘’ button for the desired adjustmentall adjustment are memorized automatically immediately 18 a Contrast Brightness Input Level Reset b Zoom H-Position H-Size V-Position V-Size c Pincushion Pin Balance Trapezoid Parallel Rotation d 9300 K 6500 K User e ENGLISH DEUTSCH FRANCAIS ESPANOL ITALIANO f H-moire V-moire OSD H-Position OSD V-Position Degauss 19 a function control Push the ‘’ button to select the Contrast / Brightness / Input level / Reset item Contrast control Press the ‘’ button to increase contrast to decrease contrast to decrease brightness Brightness control Press the ‘’ button to increase brightness Input level Press the ‘’ button to select Input level 0.7V / 1.0V Reset controlSize / Geometry / Color / Moire Returns adjustment back to factory setting only if the monitor is operating in a factory preset mode If you make an adjustment you don’t like, press button ‘↵’ to recall factory setting b function control Push the ‘’ button to select the Zoom / H-Position / H-size / V-Position / V-size / Reset item Zoom control Press the‘’ button to enlarge H-Size V-Size to diminish H-Size V-Size H-Position control Press the ‘’ button move picture to right side move picture to left side H-Size control Press the ‘’ button to enlarge H-Size to diminish H-Size V-Position control Press the ‘’ button move picture to up move picture to down 20 V-Size control Press the ‘’ button c to enlarge V-Size to diminish V-Size function control Push the ‘’ button to select the Pincushion / Pin Balance / Trapezoid / Parallel / Rotation item Pincushion control Press ‘’ button to expand the picture side to diminish the picture side Pin-balance control Press ‘’ button to expand the picture side to diminish the picture side Trapezoid control Press ‘’ button to expand the top side and the button side be diminish to diminish the top side and the button side be expand Parallel control Press ‘’ button the top side shift right and the button side shift left the top side shift left and the button side shift right Rotation control Press ‘’ button d to rotate clock wise to rotate counterclockwise function control Press the ‘’ button to select 9300 K / 6500 K / User color item User color control Press the ‘’ button to select R / G / B colorthen press the ‘↵’ button to enter the color Push the increased ‘’ or decrease ‘’ button for the color adjustment 21 e function control Press the ‘’ button to select ENGLISH / DEUTSCH / FRANSAIS / ESPANOL / ITALIANO language then press the ‘↵’ button to enter the language f function control Push the ‘’ button to select the H-Moire / V-moire / OSD H-Position / OSD V-Position / Degauss item H-Moire control Press the ‘’ button cancel H-Moire V-moire control Press the ‘’ button cancel V-Moire OSD H-Position control Press the ‘’ button move OSD to right side move OSD to right side OSD V-Position control Press the ‘’ button move OSD to up move OSD to down Degauss control Press the ↵ button to produce screen degaussing 22 "! "! 23 , .&/0+ 12'$ '# " *# +, -, $ ! % *&'$ (# "'$ ) "#$ ! % &'$ (# "'$ ) 24 2.4 X-RAY radiation protection FBT pin5 output one pulse to pass through D417 and C424 integration DC voltageand through ZD403, D418 IC401 pin25when anode voltage abnormal increaseFBT pin5 and IC401 pin25 voltage to be increasedtoo As IC401 pin25≅8VIC401 X-RAY protection circuit immediately activeH-Driver and B-DriverVOUT no output The X-RAY radiation protection circuit used in this monitor is a latching type the monitor will shown down and continue until turn-off the monitor with power switch 3.1 Horizontal driver circuit The output of IC401 pin26 H-Driver connect to Q402 H-Driver transistor makes Q402 active ON/OFF functionpush H-output Q401 to reach secondary via induction of T402For T402 is a transformer of reduced voltage and converted poleQ401 will be turn off when Q402 is onon the contrarywhen Q402 is turn off and Q401 will be on 3.2 Horizontal output circuit Horizontal output circuit is composed by Q401Horizontal Transistor T401FBT D401C401 and C416 H-Driver circuit output via T402 to switch Q401 ON/OFF to output saw tooth wave and make DY able to control the circuit scanning of elections in the CRT L403L404C413C415and C417 modify Horizontal linearity switching individually Dai RL401Q414 Q416 3.3 EW-Pincushion and width control circuit The voltage across C420 can be varied in accordance with vertical parabolic wave form and DC voltage which is generated by two stage drive Q411Q412Q409The peak yoke current is increased in proportion to the voltage across C414as the voltage across C420 is decreased for compensating the pincushion effectThe parabolic waveform and DC voltage are generated from IC401 pin24 28 4.1 Video amplifierIC601 The video amplifier module is composed of three amplifiers for RedGreenBlue channel The video input signal is fed to the video preamplifier IC601LM1269pin6 Redpin7 Greenpin5 Blue through AC coupling capacitorC601C601C603 The clamping pulse comes from IC301 pin33 IC602 output amplifier for B.R.G channel respectively 4.2 On Screen DisplayOSD IC604 IC604NT6827is a on screen display generator, pin5 for H-sync inputpin10 for V- sync inputThe IC604 is controlled by IC301 via SCLSDA bus IC604pin7pin8 The on screen display signal is output from pin15r pin13g pin14band OSD BLK to IC601 pin2 pin1pin3pin4 4.3 Auto Beam Limit CKTABL CKT When beam current pass through Q403 over 400uAthe voltage build at base of Q418 will be low enough to turn on Q418then the voltage of pin22 of IC601 will be pulled down accordingly to reduce the video preamplifier gain output 4.4 Brightness Control Brightness is controlled by varying the DC voltage of G1 with the IC301 PIN1PWM 4.5 Blanking CKT IC501TDA9309pin3 vertical blanking pulse are fed to the base of Q501The blanking pulse O/P is coupled to G1 by C507 Horizontal blanking pulse are fed to IC601 pin24 and let video O/P amp cut off during the period of horizontal retracewhile mode changeIC301 pin19 will pull high to turn offThe G1 voltage will down to –180V then CRT will cut off the video output IC301 pin3 PWM to tilt circuitQ211 and Q213 control flow of current of Rotation coilwhen the base of C215 increase from 0 to 12VAs Q211 will turn on graduallythe current starts from 14V to 6.3V via Rotate coilWhen C215decrease from 12V to 0Vthe current will change from 6.3V to GND 29 $%' 6.1 HS/VS Processor HS/VS input pin39HS pin40VS IC301 individually to work on frequencypolarityprocess of H+V and power savingthen output horizontal syncpin33and vertical syncpin32of positive polarity to IC401 TDA9113 pin1pin2 6.2 PWM Control The PWM control of IC301 is pin1, pin2 and pin3. The PWMThe eight groups of PWM output via RC after rectified may control each function Pin1Brightness Pin2Rotation Pin3DACABL 6.3 Power saving / Mute / LED control IC301 pin17pin18 are power saving control pinthe condition of power saving and mode change pin19 will change from Low to Hi and active Mute function Normal Active L H Mute SUS H L (Off mode) PD H L (Off mode) IC301 pin17SUSfunction as LED controlthe mode is as listed Power On Power saving Over range freq Hi Low Low Pin17 6.4 CS controlCS1 ~ CS3 To count H-SYNC by the output frequencythen output the cumulating as listed Freq. CS1 CS2 CS3 < 30K 0 0 0 30K~34K 0 0 0 34K~36.5K 1 0 0 36.5K~41K 1 0 1 41K~45K 0 1 0 45K~52K 0 1 1 52K~62K 1 1 0 62K~71K 1 1 1 30 2.4 X-RAY radiation protection FBT pin5 output one pulse to pass through D417 and C424 integration DC voltageand through ZD403, D418 IC401 pin25when anode voltage abnormal increaseFBT pin5 and IC401 pin25 voltage to be increasedtoo As IC401 pin25≅8VIC401 X-RAY protection circuit immediately activeH-Driver and B-DriverVOUT no output The X-RAY radiation protection circuit used in this monitor is a latching type the monitor will shown down and continue until turn-off the monitor with power switch 3.1 Horizontal driver circuit The output of IC401 pin26 H-Driver connect to Q402 H-Driver transistor makes Q402 active ON/OFF functionpush H-output Q401 to reach secondary via induction of T402For T402 is a transformer of reduced voltage and converted poleQ401 will be turn off when Q402 is onon the contrarywhen Q402 is turn off and Q401 will be on 3.2 Horizontal output circuit Horizontal output circuit is composed by Q401Horizontal Transistor T401FBT D401C401 and C416 H-Driver circuit output via T402 to switch Q401 ON/OFF to output saw tooth wave and make DY able to control the circuit scanning of elections in the CRT L403L404C413C415and C417 modify Horizontal linearity switching individually Dai RL401Q414 Q416 3.3 EW-Pincushion and width control circuit The voltage across C420 can be varied in accordance with vertical parabolic wave form and DC voltage which is generated by two stage drive Q411Q412Q409The peak yoke current is increased in proportion to the voltage across C414as the voltage across C420 is decreased for compensating the pincushion effectThe parabolic waveform and DC voltage are generated from IC401 pin24 28 4.1 Video amplifierIC601 The video amplifier module is composed of three amplifiers for RedGreenBlue channel The video input signal is fed to the video preamplifier IC601LM1269pin6 Redpin7 Greenpin5 Blue through AC coupling capacitorC601C601C603 The clamping pulse comes from IC301 pin33 IC602 output amplifier for B.R.G channel respectively 4.2 On Screen DisplayOSD IC604 IC604NT6827is a on screen display generator, pin5 for H-sync inputpin10 for V- sync inputThe IC604 is controlled by IC301 via SCLSDA bus IC604pin7pin8 The on screen display signal is output from pin15r pin13g pin14band OSD BLK to IC601 pin2 pin1pin3pin4 4.3 Auto Beam Limit CKTABL CKT When beam current pass through Q403 over 400uAthe voltage build at base of Q418 will be low enough to turn on Q418then the voltage of pin22 of IC601 will be pulled down accordingly to reduce the video preamplifier gain output 4.4 Brightness Control Brightness is controlled by varying the DC voltage of G1 with the IC301 PIN1PWM 4.5 Blanking CKT IC501TDA9309pin3 vertical blanking pulse are fed to the base of Q501The blanking pulse O/P is coupled to G1 by C507 Horizontal blanking pulse are fed to IC601 pin24 and let video O/P amp cut off during the period of horizontal retracewhile mode changeIC301 pin19 will pull high to turn offThe G1 voltage will down to –180V then CRT will cut off the video output IC301 pin3 PWM to tilt circuitQ211 and Q213 control flow of current of Rotation coilwhen the base of C215 increase from 0 to 12VAs Q211 will turn on graduallythe current starts from 14V to 6.3V via Rotate coilWhen C215decrease from 12V to 0Vthe current will change from 6.3V to GND 29 $%' 6.1 HS/VS Processor HS/VS input pin39HS pin40VS IC301 individually to work on frequencypolarityprocess of H+V and power savingthen output horizontal syncpin33and vertical syncpin32of positive polarity to IC401 TDA9113 pin1pin2 6.2 PWM Control The PWM control of IC301 is pin1, pin2 and pin3. The PWMThe eight groups of PWM output via RC after rectified may control each function Pin1Brightness Pin2Rotation Pin3DACABL 6.3 Power saving / Mute / LED control IC301 pin17pin18 are power saving control pinthe condition of power saving and mode change pin19 will change from Low to Hi and active Mute function Normal Active L H Mute SUS H L (Off mode) PD H L (Off mode) IC301 pin17SUSfunction as LED controlthe mode is as listed Power On Power saving Over range freq Hi Low Low Pin17 6.4 CS controlCS1 ~ CS3 To count H-SYNC by the output frequencythen output the cumulating as listed Freq. CS1 CS2 CS3 < 30K 0 0 0 30K~34K 0 0 0 34K~36.5K 1 0 0 36.5K~41K 1 0 1 41K~45K 0 1 0 45K~52K 0 1 1 52K~62K 1 1 0 62K~71K 1 1 1 30 32 32 23 24 26 25 27 28 29 42 1Deflection Presets 2Power Supply Alignment 3Size & Geometry Adjustment 4Video Alignment / function memory recall 5Focus adjustment 45 1. All specification must be met over line voltage range of 90vac to 264VAC 50Hz / 60Hz, unless otherwise specified 2. Operating temperature range is 0 to 40 with a relative humidity of 10% or less to 90% 3. The monitor must be operational in a usable state within 30 minutes after turn-on 4. All signal levels are measured assuming termination at the monitor’s input jacks or in its characteristic impedance 5. An ambient lighting level of 400 to 600 Lux is assumed when setting brightness for raster extinction threshold 6. All purity related specifications must be met without external degaussing 7. All controls must have excess rangeno control may be left at an end stop when proper alignment is completed 8. The monitor is not required to meet specs during the following but must toleratewithout damage to the CRT or circuitsany sequence or combination of power on and offsignal on and offunplugging of power or signal erraticwrong frequency or noisy inputs while at any possible settings of user accessible controls likewisethe monitor should survive extended periods of operation with line voltage reduced below the specified minimum 9. An isolation transformer should be used when performing alignment and testsPortions of the power supply board are hot groundThe remaining boards are cold ground 10. Discharge of CRT anode should be done only to CRT ground strap 11. Geometric measurements are assumed to be made along a straight surface with a flat rule or template 46 16 17 18 19 20 22 21 41 23 24 26 25 27 28 29 42 30 31 32 34 33 35 38 36 37 43 40 39 41 44 42 43 44 1Deflection Presets 2Power Supply Alignment 3Size & Geometry Adjustment 4Video Alignment / function memory recall 5Focus adjustment 45 1. All specification must be met over line voltage range of 90vac to 264VAC 50Hz / 60Hz, unless otherwise specified 2. Operating temperature range is 0 to 40 with a relative humidity of 10% or less to 90% 3. The monitor must be operational in a usable state within 30 minutes after turn-on 4. All signal levels are measured assuming termination at the monitor’s input jacks or in its characteristic impedance 5. An ambient lighting level of 400 to 600 Lux is assumed when setting brightness for raster extinction threshold 6. All purity related specifications must be met without external degaussing 7. All controls must have excess rangeno control may be left at an end stop when proper alignment is completed 8. The monitor is not required to meet specs during the following but must toleratewithout damage to the CRT or circuitsany sequence or combination of power on and offsignal on and offunplugging of power or signal erraticwrong frequency or noisy inputs while at any possible settings of user accessible controls likewisethe monitor should survive extended periods of operation with line voltage reduced below the specified minimum 9. An isolation transformer should be used when performing alignment and testsPortions of the power supply board are hot groundThe remaining boards are cold ground 10. Discharge of CRT anode should be done only to CRT ground strap 11. Geometric measurements are assumed to be made along a straight surface with a flat rule or template 46 1. Defection Presets Control pots VR101VR401VR403 are set at middle point. ScreenFocus VR set to min 2. 3. Power Supply Alignment 2.1 Input VGA480signal & beam current set at 0µA 2.2 Adjust VR101 until TP201 = 77V 0.3V at TP201 2.3 Adjust VR403 until voltage at TP208 = 67.5V 0.5V for CPT / LG CRT 68V 0.5V for SDI CRT Size & Geometry Adjustment 3.1 Raster Centering 3.1.1 Input cross hatch pattern at 60K 1024*768 Hz mode 3.1.2 Adjust contrast to 10FLadjust screen just raster visible 3.1.3 Adjust VR401 to center raster on screen such that the horizontal distance from the midpoint of the left display edge to the left bezel edge is within 2mm of the distance from the midpoint of the right display edge to the right bezel edge 3.2 Picture Size Input mode 1~9 signal adjust V-sizeH-size to achieve H-SIZE310mm 2mm V-SIZE235mm 2mm 3.3 Picture Centering Input mode 1~9 adjust V-position H-position such that the picture is centered with the screen 47 3.4 Geometry Adjustment 3.4.1 Input mode 1~9 3.4.2 Pincushion and barrel distortion 3.4.3 Trapezoid and parallelogram distortion trapezoid / parallelogram 1.5mm 3.4.4 Rotate adjustment 4. Video Alignment / function memory recall 4.1 Input 1024×768 60KHz full black pattern 4.2 Set Brightness 100%Contrast 0%turn the G2 knob to obtain raster light O/P about 0.4 FL 4.3 Adjust RGB bias Control to meet following chromatically spec 9300K x = 0.283 0.003y = 0.297 0.003Y = 0.6 0.3 FL 6500K x = 0.313 0.003y = 0.329 0.003Y = 0.6 0.3 FL 4.4 Adjust Brightness to 50%Contrast 100% 4.5 Apply 70mmx70mm green window patternadjust G-Driver to obtain green window pattern light O/P about 33 FL (9300K) 48 4.6 Apply white window patternadjust R-DriverB-Driver to meet following chromatically spec 9300K x = 0.283 0.003y = 0.297 0.003Y = 40 1 FL 4.7 Apply 70mmx70mm green window patternadjust G-Driver to obtain green window pattern light O/P about 32 FL (6500 k) 4.8 Apply white window patternadjust R-DriverB-Driver to meet following chromatically spec 6500K x = 0.313 0.003y = 0.329 0.003Y = 40 1 FL 4.9 Apply full white pattern 4.10 Adjust OSD ABL to obtain light O/P =30 0.5 FL 4.11 Apply full white patternadjust contrast from max to 10FL and check the chromatically meet following spec x (at contrast30) – x (at contrast10) 0.010 y (at contrast30) – y (at contrast10) 0.012 4.12 Functions “All mode recall” Push button “” and power switch onthe picture should restore to that of factory mode 5. Focus Adjustment 5.1 Apply signal ALL “mE” pattern at 1024*768 60K mode 5.2 Set Brightness 50%Contrast 100% 5.3 Set focus control for best focus 49 1. Fixture adjust procedure ."* , /% 0)$) % !" #" $%& - '% ()* , +% 51 - 2. Fixture Connect a. Fixture adjustment " # " $ ! 52 b. Used OSD adjust 1. Push MENU & buttonthen push power on 2. Push MENU buttonthen select ‘User Color’ item , the OSD into adjustment mode 3. After size & geometry adjustthe adjustment value save in ‘SI’ item 4. After color adjustthe adjustment value save in ‘S9’ or ‘S6’ item 5. Command define Contrast Brightness ABL ABL Adjust TOP Corner Bottom Corner SI Save Size & Geometry r R cut-off g G cutoff b B cut-off S9 Save 9300K GTF Save R R drive G G drive B B drive S6 Save 6500K INIT Initial 53 1. Power supply is defective 2. Horizontal deflection circuit is defective 3. The raster don’t appear 4. Vertical deflection is defective 5. Video is defective 54 1. Power supply is defective % . "# % . . & "$ % . . ! ! . "$% "# $ % . '( !)( !* $ "! !+ !* !, !+ !- ( . ( 55 2. Horizontal deflection circuit is defective 5 "++ 4 4 ! 4 #, ! 5 .$6 - " #" 4 #,-.! 5 "6 #" 4 #,8 %/%/% 5 .6 $ #" 4 #,#" $ 5 $6 % & & 4 % 5 %" &'()*& 4 - "/%"/ 0' 4 1 #"/1"/ #"2/#"/#"/#"+/ %3/#"$ 5 .6 5 #7 56 3. The raster don’t appear The raster don't appear Is the C425= -200V normal? No R457, D420 are defective Yes Does the CRT heater glow red? No Yes Heater voltage approx. 6.3V Turn the FBT screen clockwise Does the entire screen light up? Is the voltage at the heater pin9 of CRT socket normal? Yes Video circuit Q419, Q420 IC301 pin1 brightness control are defective No FBT is defective 57 No D206,Q208 are defective 4. Vertical deflection is defective / 0$ (% # */3 $0 10 1 2 "/3& 0+ +! . 1*/3 $0 * 0* 2 . * !4+/ 143/2 . "0 ." $001 ! !+ 2 "% &+/ 3/ 10$ 58 5. Video is defective ! , &,51 6 - , 9 ! )(& * + . '(&. ,/ . 0 9 *1 6 ! $ % & '(& 9 ! "### 51 6 1 '(& * 9 78(,*1 86(+1 8(&&1 9 , 59 ! &(2" 3& 43%43&

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