JVC GM-P420UG - Plasma Monitor Service Manual Download Page 41

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No. 51957

GM-P421U

GM-P420UG

Item

Test equipment

Test points

Ad justment

locations

Ad justment procedure

RGB offset
(480i)
adjustment

Oscilloscope

NT SC (480i)
Video signal
generator
(Ramp pattern)

CH01
WE04
(R cut off)
WE06
(B cut off)

1. Input the 480i video signal ramp pattern to the COMPONENT

terminal.

2. Change the value in the

＜

SERVICE MENU

＞

CH01 from “0”

to “2” to enter the tes t mode for RGB balance.

3. Adjust the values in the

＜

SERVICE MENU

＞

WE04 (R cut

off) and WE06 (B c ut off) so that the 3 lines on the left part of
the PDP s creen are aligned. Keep the WE05 (G cut off) intact.

4. Return the value in the

＜

SERVICE MENU

＞

CH01 from “2” to

“0”.

RGB offset
(1080i)
adjustment

Oscilloscope

Video signal
generator
(1080i Ramp
pattern)

CH01
WG04
(R cut off)
WG06
(B cut off)

1. Input the 1080i video signal ramp pattern to the COMPONENT

terminal.

2. Change the value in the

＜

SERVICE MENU

＞

CH01 from “0”

to “2” to enter the tes t mode for RGB balance.

3. Adjust the values in the

＜

SERVICE MENU

＞

WG04 (R c ut

off) and WG06 (B cut off) so that the 3 lines on the left part of
the PDP s creen are aligned. Keep the WG05 (G cut off) intac t.

4. Return the value in the

＜

SERVICE MENU

＞

CH01 from “2” to

“0”.

(RAMP pattern)

Align the 3 lines on the left part.

(RAMP pattern)

Align the 3 lines on the left part.

Summary of Contents for GM-P420UG - Plasma Monitor

Page 1: ...ERATING INSTRUCTIONS Appendix 1 1 SAFETY PRECAUTIONS 4 MAIN DIFFERENCE LIST 5 TECHNICAL INFORMATION 6 PRECAUTIONS FOR USE 8 SPECIFIC SERVICE INSTRUCTIONS 11 SERVICE ADJUSTMENTS 35 STANDARD CIRCUIT DIAGRAM Appendix 2 1 PARTS LIST 51 SPECIFICATION Pin assigment Dimensions 75 BASIC CHASSIS S3 SERVICE MANUAL 42 PLASMA DISPLAY MONITOR ...

Page 2: ...1V p p 75Ω Audio input Pin jack terminal 2 L R 500mV rms high impedance COMPONENT RGB B COMPONENT input BNC terminal 3 Y 1V p p 75Ω PB B Y 0 7V p p 75Ω PR R Y 0 7V p p 75Ω RGB input BNC terminal 5 Analog RGB R 0 7V p p 75Ω G 0 7V p p 75Ω B 0 7V p p 75Ω G on sync 1V p p 75Ω negative sync Horizontal sync HD HD 0 3 5V p p 1kΩ positive negative polarity Composite sync Cs Cs 0 3 5V p p 1kΩ positive neg...

Page 3: ... 92 75 92 75 regular 95 00 95 00 full 95 00 95 00 panoramic 95 00 90 00 RGB 15k 60Hz SMPTE 244M 59 94 15 734 14 32 910 525 768 485 zoom 95 00 71 25 regular 95 00 95 00 full 95 00 95 00 panoramic 95 00 90 00 PC RGB 15k RGB 15k 50Hz 50 00 15 625 17 73 1135 625 922 575 zoom 95 00 71 25 regular 100 00 100 00 PC98 NEC 56 42 24 82 21 05 848 440 640 400 full 100 00 100 00 regular 100 00 100 00 PC VGA 400...

Page 4: ...caution should be given to assure correct lead dress in the high voltage circuit area W here a short circuit has occurred those components that indicate evidence of overheating should be replaced Always use the manufacturer s replacement components 7 Isolation Check Safety for Electrical Shock Hazard After re assembling the product always perform an isolation check on the exposed metal parts of th...

Page 5: ...WB FX 4071A FX 4077A RGB INPUT PWB FX 6075A FX 6088A VIDEO INPUT PWB FX 6076A FX 6089A SP TERMINAL L PWB FX 6077A FX 6090A SP TERMINAL R PWB FX 6078A FX 6091A LED PWB FX 7026A FX 7031A TEMP SENSOR PWB FX 7035A FX 7037A LINE FILTER AUDIO PWB FX 9082A FX 9084A ROLL R LABEL LC20970 001A 0L LC20970 002A 0L FCC LABEL LC31038 011A CORE FILTER QQR0491 001 5 QQR0491 001 4 FRONT FILTER LC32041 001A LC31401...

Page 6: ...espective discharge electrodes Between these neon for discharging and xenon for generating ultraviolet rays are enclosed One picture element pixel is composed of Red Green and Blue RGB cells The cell pitch is 0 36mm horizontal 1 08mm per pixel by 1 08mm vertical As shown in Fig 1 the cells are arranged for each R G B color A pixel consists of each cell of R G B color The size of a cell is 0 36mm h...

Page 7: ...hting with the brightness as brighter as originally lighting 3 PIXEL FAULT SPECIFICATION Screen display Criteria for number of faulted cell Criteria for number of consecutive faulted cell Bright fault All black screen A zone 1 or less than 1 in each color B zone 2 or less than 2 in each color 2 or Less than 2 consecutively Red level 100 on entire screen Green level 100 on entire screen Dark fault ...

Page 8: ...Installation When installing the Monitor in a way not mentioned in A and B above consult your dealer Improper installation which obstructs the air stream may cause internal heat buildup and thus may caucus damage to the product 3 Retained Image and burning When the same pattern is displayed continuously for many hours the burning of the screen is occurred in the same manner as for a CRT This will ...

Page 9: ...The structure and strength of the wall where a PDP is installed should be checked beforehand so as to install the PDP safely without any accident It is necessary to set the cooling fan when install Vertically Refer to Precautions for use section 2 Desktop A PDP should be installed on a rigid floor or stand In order to prevent a PDP from turning over by an accident or earthquake safety measures sho...

Page 10: ...le carrier is selected advise them how to handle a PDP properly during transportation In addition a PDP should be insured for its physical damage before shipment This product is fragile because glass is widely used Thus the following requirements for transportation should be observed 1 Don t apply vibration and impact The glass of a PDP may be broken when the package is brought down on its side Wh...

Page 11: ... shown in Fig 2 3 Remove the 4 screws marked as shown in Fig 2 And than take off the cover 4 Withdraw the SIDE COVER toward you 5 Follow the same steps when removing the other hand SIDE COVER as shown in Fig 2 3 REMOVING THE TERMINAL BRACKET L R After removing the back cover and side cover 1 Remove the 3 screws marked as shown in Fig 3 2 Remove the 2 screws marked as shown in Fig 3 3 Remove the 4 ...

Page 12: ...emove the 2 screws marked as shown in Fig 5 2 Remove the 5 screws marked as shown in Fig 5 3 Withdraw the BACK FRAME L or R toward you Follow the same steps when removing the other hand BACK FRAME 6 REMOVING THE CHASSIS BASE After removing the back cover side cover terminal bracket back frame L R 1 Remove the 2 screws marked as shown in Fig 6 2 Withdraw the CHASIS BASE toward you Fig 5 A 2 D 5 BAC...

Page 13: ...2 screws marked attaching the CONTROL PANEL as shown in Fig 8 3 Withdraw the OPTICAL FILTER with flame toward you 9 REMOVING THE PW BOARD After removing the optical filter FRONT CONTROL PWB 1 Remove the 2 screws marked as shown in Fig 8 2 Remove the FRONT CONTROL PWB from CONTROL PANEL LED PWB 1 Remove the 2 screws marked as shown in Fig 8 2 Then remove the LED PWB from optical panel WIRE CLAMPING...

Page 14: ...4 If the value is different select the setting item with the SELECT key and set the correct value with the ADJUST key 5 Press the MENU EXIT key and return to the normal screen 4 PROCEDURE FOR reset OR all reset 1 The SET UP MENU is displayed 2 Select reset or all reset item with SELECT keyof remote control unit 3 Press ENTER key and the reset or all reset menu is displayed Fig 2 4 Press ENTER key ...

Page 15: ... the screen Fig 2 While mark is appears press the MENU key and VOL key simultaneously The word PLEASE DON T TOUCH Fig 3 will be display on the screen center While the words of PLEASE DON T TOUCH are display as shown in Fig 3 Press the SELECT key SERVICE MENU will be display as shown in Fig 4 2 SELECT ADJUSTMENT OF SERVICE MENU ITEM While the SERVICE MENU is displayed Press the up or down select ke...

Page 16: ...ing Value Setting Item Setting Value POWER OFF STATUS DISPLAY ON INPUT SELECT VIDEO A B CONTROL LOCK OFF VOLUME 10 REMOTE SWITCH MODE1 CONTRAST 10 HD SIGNAL MODE 1080i BRIGHT 00 WHITE BALNCE HIGH R GAIN 0 CHROMA 00 G GAIN 0 PHASE 00 B GAIN MAX PICTURE ADJ SHARPNESS 00 LOW R GAIN MAX H SIZE 00 G GAIN 0 H POSITION 00 B GAIN 0 V SIZE 00 PIXEL SHIFT OFF V POSITION 00 POWER SAVE OFF SIZE POSITION ADJ C...

Page 17: ...be initialized SELF CHECK BY LED This plasma display monitor is equipped with a self diagnosis function by the LED indication If an abnormality is detected the three LED indicators on the upper left of the PDP will turn on or flash SELF DIAGNOSIS ITEMS LED LIGHTING FLASHING LED Detected items upper center lower Priority E2PROM communication error 6 Panel alarm 5 High temp Power 4 High temp Temp se...

Page 18: ...y pressing the SELECT key and key 3 After moving the cursor to HOUR METER BLOCK Fig 2 press the ENTER key 4 Then the elapsed time will be as shown Fig 3 5 Press the ENTER key to display as shown in Fig 4 6 When the ENTER key is pressed again the elapsed time will be returned to 000000 Fig 5 Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 ...

Page 19: ... H10 000 AD OFFSET R W B11 000 AD OFFSET Pr W H11 000 AD OFFSET G W B12 000 AD OFFSET Y W H12 000 AD OFFSET B W B13 000 AD OFFSET Pb W H13 000 VIDEO HIGH RGB 15k HIGH DRIVE R W C01 239 DRIVE R W I01 250 DRIVE G W C02 255 DRIVE G W I02 254 DRIVE B W C03 255 DRIVE B W I03 255 CUT OFF R W C04 000 CUT OFF R W I04 001 CUT OFF G W C05 000 CUT OFF G W I05 000 CUT OFF B W C06 000 CUT OFF B W I06 000 BRIGH...

Page 20: ...VERT SIZE OFFSET C C47 255 R GAIN MIN C B11 000 HORI SIZE OFFSET C C48 000 R GAIN MAX C B12 127 VERT SIZE OFFSET C C49 255 G GAIN MIN C B13 000 DHSYNC CYCLE C C50 000 G GAIN MAX C B14 127 DHSYNC CYCLE C C51 255 B GAIN MIN C B15 000 DIN OVERERITE C C52 000 B GAIN MAX C B16 127 FREQENCY DATA SIZE POSI RANGE HORI FREQ ERROR C D01 003 HORI MIN C C01 080 VERT FREQ ERROR C D02 001 HORI MAX C C02 080 STA...

Page 21: ...04 018 HSYNC CYCLE L D A30 251 OPLL MDIV REF L D A05 125 HSYNC CYCLE H D A31 002 OPLL MDIV REF H D A06 000 DF ACT LINE ST L D A32 046 OPLL NDIV REF D A07 149 DF ACT LINE ST H D A33 000 reserved D A08 000 DF ACT LINES L D A34 249 reserved D A09 000 DF ACT LINES H D A35 001 reserved D A10 000 DF ACT PIXEL ST L D A36 096 reserved D A11 000 DF ACT PIXEL ST H D A37 000 reserved D A12 000 DF ACT PIXELS ...

Page 22: ...FY H D B24 000 W IN START REFY H D C24 000 W IN START REFX L D B25 001 W IN START REFX L D C25 001 W IN START REFX H D B26 000 W IN START REFX H D C26 000 V SYNC SOURCE D B27 002 V SYNC SOURCE D C27 002 VSYNC CYC LE L D B28 013 VSYNC CYC LE L D C28 013 VSYNC CYC LE H D B29 002 VSYNC CYC LE H D C29 002 HSYNC CYCLE L D B30 248 HSYNC CYCLE L D C30 248 HSYNC CYCLE H D B31 003 HSYNC CYCLE H D C31 003 D...

Page 23: ...TART REFY H D D24 000 W IN START REFY H D E24 000 W IN START REFX L D D25 001 W IN START REFX L D E25 001 W IN START REFX H D D26 000 W IN START REFX H D E26 000 V SYNC SOURCE D D27 002 V SYNC SOURCE D E27 002 VSYNC CYCLE L D D28 013 VSYNC CYCLE L D E28 013 VSYNC CYCLE H D D29 002 VSYNC CYCLE H D E29 002 HSYNC CYCLE L D D30 248 HSYNC CYCLE L D E30 251 HSYNC CYCLE H D D31 003 HSYNC CYCLE H D E31 00...

Page 24: ...RT REFY H D F24 000 W IN START REFY H D G24 000 W IN START REFX L D F25 001 W IN START REFX L D G25 001 W IN START REFX H D F26 000 W IN START REFX H D G26 000 V SYNC SOURCE D F27 002 V SYNC SOURCE D G27 002 VSYNC CYCLE L D F28 013 VSYNC CYCLE L D G28 013 VSYNC CYCLE H D F29 002 VSYNC CYCLE H D G29 002 HSYNC CYCLE L D F30 248 HSYNC CYCLE L D G30 248 HSYNC CYCLE H D F31 003 HSYNC CYCLE H D G31 003 ...

Page 25: ...T PIXELS REF L D H21 208 VERT W IDE UP D H47 000 INPUT ACT PIXELS REF H D H22 002 HORI START POS H D H48 000 W IN START REFY L D H23 001 HORI START POS L D H49 114 W IN START REFY H D H24 000 VERT START POS H D H50 000 W IN START REFX L D H25 001 VERT START POS L D H51 060 W IN START REFX H D H26 000 SIGNAL MODE D F52 024 H POSITION BLOCK SETTING No SETTING VALE SETTING No SETTING VALE VIDEO NTSC ...

Page 26: ... ZOOM P D 03 000 BW 60 PANORAMIC P B20 000 RGB15K60 PANORA P D 04 000 PAL REGULAR P B21 000 RGB15K50 REGULAR P D 05 000 PAL FULL P B22 000 RGB15K50 FULL P D 06 000 PAL ZOOM P B23 000 RGB15K50 ZOOM P D 07 000 PAL PANORAMIC P B24 000 RGB15K50 PANORA P D 08 000 PAL N REGULAR P B25 000 VGA400 56 REGULAR P D 09 000 PAL N FULL P B26 000 VGA400 56 FULL P D 10 000 PAL N ZOOM P B27 000 VGA400 70 REGULAR P ...

Page 27: ...24 DITHER B D04 007 SUB COLOR H S B09 008 NR GAIN CORE B D05 000 SUB COLOR L S B10 022 RGB 15k 50 M OVING SUB TINT H S B11 000 CODIN G SELECT B E01 001 SUB TINT L S B12 000 PRIMING CONT B E02 000 VIDEO SECAM GAMM ER B E03 002 LPF S C01 000 DITHER B E04 007 SUB BRIGHT S C02 016 NR GAIN CORE B E05 000 SHARPN ESS S C03 002 RGB 15k 50 STILL SUB CONTRAST S C04 112 CODIN G SELECT B F01 001 YC DLAY H S C...

Page 28: ...UB TI NT H S H11 0 0 0 S UB TI NT L S F12 0 0 0 S UB TI NT L S H12 0 0 0 D EVICE IN IT IA L VA LU E SET TIN G N o SET TIN G VALE SET TIN G N o SET TIN G VALE V PC 32 3 0 D I A 0 1 0 1 4 I A 2 9 0 0 0 I A 0 2 0 0 0 I A 3 0 0 0 0 I A 0 3 0 0 0 I A 3 1 0 0 0 I A 0 4 0 0 0 I A 3 2 0 0 0 I A 0 5 0 0 0 I A 3 3 0 0 0 I A 0 6 0 0 0 I A 3 4 0 0 0 I A 0 7 0 0 0 I A 3 5 0 0 0 I A 0 8 0 0 0 I A 3 6 0 0 0 I A ...

Page 29: ...caler1 window controls AD C RANGE scaler1 window controls SETTING ITEM SETTING ITEM SOFTMIXER CONTROL scaler1 2 nonlinear scaling coefficient Standard select scaler1 window controls Enable automatic standard recognition scaler1 window controls Input select scaler1 window controls picture start position scaler2 window controls luma chroma delay adjust scaler2 window controls helper delay register s...

Page 30: ...19 000 POW ER SAVE I B20 048 OPLL MDIV L I D20 159 TA1318 OPLL MDIV H I D21 009 OPLL NDIV I D22 149 NL CONTROL I D23 065 NL SWITCH I D24 000 NL X I D25 000 NL Y I D26 000 VIDEO CONFIG I D27 017 VIDEO SC I D28 008 VIN POLARITY I D29 000 VIN CONTROL I D30 000 VIN AC TIVE PIXELS L I D31 000 VIN AC TIVE LIN ES L I D32 000 VIN FLAGGED LINE I D33 000 VIN REGS MSBITS I D34 000 VIN FILTER GRP C0 I D35 000...

Page 31: ...000 V W IN GRP Y SIZE H I D37 001 DIN CONTROL 0 I D83 004 V W IN GRP X POS L I D38 001 DIN CONTROL 1 I D84 064 V W IN GRP X POS H I D39 000 DIN CONTROL 2 I D85 002 V W IN GRP X SIZE L I D40 085 DPLL DIV L I D86 000 V W IN GRP X SIZE H I D41 003 DPLL DIV H I D87 000 D W IN GRP Y POS L I D42 001 DIN THR ESHOLD I D88 008 D W IN GRP Y POS H I D43 000 CLAMP STAR T I D89 001 D W IN GRP Y SIZE L I D44 22...

Page 32: ...47 001 V CSC GRP C 4 L I D93 228 DISPLAY POLAR ITY I D48 003 V CSC GRP C 4 H I D94 001 CONTROL 3D I D49 000 V CSC GRP C 4 L I D95 000 X0 3D I D50 000 V CSC GRP C 4 H I D96 000 SEC T STAT GRP VIDEO0 L I D51 000 D C SC BIAS I D97 000 SEC T STAT GRP VIDEO0 H I D52 000 D C SC GRP C 0 L I D98 200 SEC T STAT GRP VIDEO1 L I D53 160 D C SC GRP C 0 H I D99 002 SEC T STAT GRP VIDEO1 H I D54 001 D C SC GRP C...

Page 33: ...000 WIN LENG GRP OSD B H I D12 000 SC THRESHOLD GRP VIDEO IN I D13 064 SC THRESHOLD GRP VIDEO OUT I D14 064 SC THRESHOLD GRP D ATA IN I D15 032 SC THRESHOLD GRP D ATA OU T I D16 032 OSD IN ADDR L I D17 000 OSD IN ADDR R I D18 000 OSD IN BLOCK LENGTH I D19 000 OSD SEC TIONS I D20 000 MSR YMIN I D55 000 OSD IN DATA I D21 000 MSR YMAX I D56 000 OSD IN CONTROL I D22 000 SDRAM W INDOW CONTROL I D23 000...

Page 34: ...I E17 255 FILTER C OEFF C6 E B07 000 GAMMER I E18 090 FILTER C OEFF C7 E B08 000 UPD64083GF FILTER C OEFF C8 E B09 000 MODE I F01 021 480p 720p 1080i CLOCK I F02 000 FILTER C OEFF C0 E C 01 000 DYC O I F03 193 FILTER C OEFF C1 E C 02 000 AD C IN I F04 034 FILTER C OEFF C2 E C 03 000 DY CORE LEVEL I F05 042 FILTER C OEFF C3 E C 04 000 DC COR E LEVEL I F06 036 FILTER C OEFF C4 E C 05 000 NR GAIN I F...

Page 35: ... instrument for warming up for at least 30 minutes before starting adjustment 5 If the input signal is not specified use the most appropriate signal for adjustment 6 Never touch parts such as variable resistors transformers and condensers not shown in the adjustment items of this service adjustment MEASURING INSTRUMENT AND TOOLS 1 DC voltmeter or digital voltmeter 2 Oscilloscope 3 Signal generator...

Page 36: ...No 51957 GM P421U GM P420UG 36 SERVICE MENU FLOW CHART ...

Page 37: ...No 51957 GM P421U GM P420UG 37 WIRING ADJUSTMENT LOCATIONS PDP BLOCK ...

Page 38: ...No 51957 GM P421U GM P420UG 38 CHASSIS BASE ...

Page 39: ...formly 172V 1 0V 2 Adjust the VR351 so that the voltage of the CNTP pin 1 becomes the panel Vd setting value specified value of the panel around 60V 1 0V NOTE The designated voltage value Vd Vs of the PDP is written on the little label posted on the back of the PDP VCO adjustment Color bar signal generator NTSC 1 Input the NTSC color bar signal to the VIDEO A terminal 2 Enter the SERVICE MENU and ...

Page 40: ...4 In the same manner as for 3 above connect the probe of the oscilloscope to the MAIN PWB TP PB 53 pin of IC 205 the highest bit and adjust the value with the SERVICE MENU WG13 AD input offset RGB offset NTSC adjustment Oscilloscope NTSC Video signal generator CH01 WC04 B cut off WC06 B cut off 1 Input the composite video signal ramp pattern to the VIDEO A terminal 2 Change the value in the SERVIC...

Page 41: ... screen are aligned Keep the WE05 G cut off intact 4 Return the value in the SERVICE MENU CH01 from 2 to 0 RGB offset 1080i adjustment Oscilloscope Video signal generator 1080i Ramp pattern CH01 WG04 R cut off WG06 B cut off 1 Input the 1080i video signal ramp pattern to the COMPONENT terminal 2 Change the value in the SERVICE MENU CH01 from 0 to 2 to enter the test mode for RGB balance 3 Adjust t...

Page 42: ...are aligned Keep the WA05 G cut off intact 4 Return the value in the SERVICE MENU CH01 from 2 to 0 RGB 15k VIDEO signal Ramp pattern Horizontal Frequency 15 75kHz Vertical frequency 59 94Hz RGB offset RGB 15k adjustment Oscilloscope PC Video signal generator CH01 WI04 R cut off WI06 B cut off 1 Input the RGB15k video signal ramp pattern to the PC IN terminal 2 Change the value in the SERVICE MENU ...

Page 43: ...SERVICE MENU WC01 R DRIVE and WC02 G DRIVE so that the color temperature becomes the HIGH adjusting point given the table Keep the value in the WC03 B DRIVE at 255 4 If the adjustment cannot be done according to the step 3 above return the values in the WC01 R DRIVE and WC02 G DRIVE to 255 temporarily and fixe the value in the WC02 G DRIVE to 255 Then adjust the values in the WC01 R DRIVE and WC03...

Page 44: ...E01 R DRIVE and WE02 G DRIVE so that the color temperature becomes the HIGH adjusting point given the table Keep the value in the WE03 B DRIVE at 255 4 If the adjustment cannot be done according to the step 3 above return the values in the WE01 R DRIVE and W E02 G DRIVE to 255 temporarily and fixe the value in the W E02 G DRIVE to 255 Then adjust the values in the W E01 R DRIVE and WE03 B DRIVE 5 ...

Page 45: ...U WG01 R DRIVE and WG02 G DRIVE so that the color temperature becomes the HIGH adjusting point given the table Keep the value in the WG03 B DRIVE at 255 4 If the adjustment cannot be done according to the step 3 above return the values in the WG01 R DRIVE and WG02 G DRIVE to 255 temporarily and fixe the value in the WG02 G DRIVE to 255 Then adjust the values in the WG01 R DRIVE and WG03 B DRIVE 5 ...

Page 46: ...s in the SERVICE MENU WA01 R DRIVE and WA02 G DRIVE so that the color temperature becomes the HIGH adjusting point given the table Keep the value in the WA03 B DRIVE intact 4 If the adjustment cannot be done according to the step 3 above return the values in the WA01 R DRIVE and W A02 G DRIVE to 255 temporarily and fixe the value in the W A02 G DRIVE to 255 Then adjust the values in the W A01 R DR...

Page 47: ...he values in the SERVICE MENU W I01 R DRIVE and WI02 G DRIVE so that the color temperature becomes the HIGH adjusting point given the table Keep the value in the WI03 B DRIVE intact 4 If the adjustment cannot be done according to the step 3 above return the values in the WI01 R DRIVE and WI02 G DRIVE to 255 temporarily and fixe the value in the WI02 G DRIVE to 255 Then adjust the values in the WI0...

Page 48: ...ke the black portions with significant black level White balance adjustment should be carried out beforehand The PICTURE ADJ in the MAIN MENU should be initialized Bright 480i adjustment Video signal grayscale 480i generator WE07 1 Input the 480i video signal gray scale pattern to the COMPONENT terminal 2 Adjust the value in the SERVICE MENU WE07 so that the 4 portion on the screen of the panel is...

Page 49: ...on the screen of the panel is shown up as a slight color tinting of the black while the 2 black portion do not gleam with the illumination intensity which is brighter than that of the preliminary electric discharge Care must be taken not to make the black portions with significant black level White balance adjustment should be carried out beforehand The PICTURE ADJ in the MAIN MENU should be initi...

Page 50: ...eezers and remove the chip part Transistors diodes variable resistors etc 1 Apply extra solder to each lead 2 As shown in the figure push the part with tweezers and alternately melt the solder at each lead Shift and remove the chip part Note After removing the part remove remaining solder from the pattern 2 How to install Chip parts Resistors capacitors etc 1 Apply solder to the pattern as indicat...

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