JVC DT-V1710CG Service Manual Download Page 48

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1-48 (No. 52152)

CONTRAST ADJUSTMENT (HDTV)

Notes:

•

Perform the following adjustments after completing

the Screen Voltage Coarse adjustment.

•

Set the CONTRAST data in the Setup Menu to “00”.

•

The value adjusted at the SR adjustment becomes

the reference value for the following adjustments.
When this data is changed, it is required to re-adjust
the data of all of the adjustment signals (HDTV, SDTV
and NTSC/PAL). When re-adjusting the 1080/60i
signal, use the SI.

– Standard value (SR) adjustment –

(1) Apply the 1080/60i crosshatch signal to INPUT A (Terminal

Y on the Component/RGB Input Card).

(2) Set the CONTRAST potentiometer on the front panel to

the center click position.

(3) Connect the oscilloscope across TP-47G and TP-GND.
(4) Adjust

SR01

in the Service Menu to set the voltage

amplitude <A> in the figure on the right to the voltage
shown in the Table 1.

– Other signals adjustments –

(5) Apply the 1080/60i crosshatch signal to INPUT A (Terminal

Y on the Component/RGB Input Card).

(6) Set the CONTRAST potentiometer on the front panel to

the center click position.

(7) Connect the oscilloscope across TP-47G and TP-GND.
(8) Adjust

SI01

in the Service Menu to set the voltage

amplitude <A> in the figure on the right to the voltage
shown in the Table 1.

(9) Vary the adjustment signal and adjustment data, and

re-perform adjustments in steps 5 to 8 above (see Table
1).

4.10.8 CONTRAST ADJUSTMENTS

1 Vertical interval

(V. sync)

<A>

Adjustment Signal Adjustment Data Adjustment Voltage <A>

COMMON(1080/60i)

SR1

30 V ± 2 V

1080/60i

SI01

30 V ± 2 V

1080/50i

SK01

32 V ± 2 V

1080/24spF

SL01

33 V ± 2 V

720/60p

SM01

32 V ± 2 V

720/50p

SN01

32 V ± 2 V

Table 1

Measuring Instruments

Signal generator (Crosshatch signal)
Oscilloscope

Card (Slot)

Component/RGB Input Card (Slot 1)

Test Points

TP-47G [CRT SOCKET PWB]
TP-GND [CRT SOCKET PWB]

Adjustment Points

S*01 (Contrast) [Service Menu]

Summary of Contents for DT-V1710CG

Page 1: ... V1710CG E For the specifications adjustments or part lists of optional board IF C01PNG NTSC PAL video input card and IF C01COMG Component RGB input card refer to service manual DT V1700CG E No 51899 TABLE OF CONTENTS 1 PRECAUTIONS 1 3 2 SPECIFICSERVICEINSTRUCTIONS 1 4 3 DISASSEMBLY 1 5 4 ADJUSTEMNT 1 13 5 TROUBLESHOOTING 1 73 ...

Page 2: ... HD serial digital using the IF C12HSDG Installing an optional input card in SLOT1 2 or 3 is required INPUT A INPUT B Terminals on the input card in SLOT1 INPUT C INPUT D Terminals on the input card in SLOT2 INPUT E INPUT F Terminals on the input card in SLOT3 Point of contact connection 1 line D sub connector 15 pin 3 line Serial connection 1 line D sub connector 9 pin compliant to RS 485 1W mona...

Page 3: ...r of the complete product 8 Do not check high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10kΩ 2W resistor to the anode button 9 When service is required observe the original lead dress Extra precau...

Page 4: ...EL Please check the destination and the version of your model by RATING LABEL DT V1710CG U FOR NORTH AMERICA MODEL DT V1710CG E FOR EUROPE AND ASIA MODELS SECTION 2 SPECIFIC SERVICE INSTRUCTIONS INDICATED DT V1710CGU INDICATED DT V1710CGE ...

Page 5: ...as required 2 Remove the two screws 12 and pull the CHASSIS BASE toward the front to remove it 3 While disengaging the claw D on the CHASSIS BASE that is engaged with the rear of the SPEAKER lift the SPEAKER to remove it see Fig 2 4 Remove the three screws 13 and then remove the PB BRACKET 5 Unplug the S CORRECTION PWB from the connector on the MAIN PWB CAUTION Before turning the power on ensure t...

Page 6: ...OINT BRACKET SLOT CHASSIS PB BRACKET SIDE BRACKET SIDE BRACKET CONTROL BASE CRT SOCKET PWB MOTHER PWB TOP COVER SIGNAL PWB REMOTE PWB REAR PANEL SLOT PANEL FRONT VR PWB FRONT CONTROL PWB Speaker back side BOTTOM COVER REMOVING THE SPEAKER A E D B 14 14 14 12 12 14 4 17 4 16 4 4 2 2 10 8 8 8 6 13 13 13 7 5 11 2 2 2 15 1 2 3 2 2 1 10 1 ...

Page 7: ...tion coil 2 Keep the demagnetization coil at a distance of more than 1 5 cm from the CRT screen and the main unit during use 3 When demagnetizing the CRT screen hold the demagnetization coil perpendicularly to the CRT screen 4 When demagnetizing the outer cabinet of the unit use the demagnetization coil in the orientation as shown below ...

Page 8: ...T screen release the demagnetization coil power button 5 If the color irregularities are still observed repeat the above steps once more 3 2 3 DEMAGNETIZING THE OUTER CABINET OF THE UNIT 1 While holding the power button of the demagnetization coil move it to approach the outer cabinet of the unit Keep the demagnetization coil at a distance of more than 1 5 cm from the cabinet 2 Keep the demagnetiz...

Page 9: ... off and unplug the power cord from the power outlet 2 Replace the Memory IC with a new Memory IC storing the initial setting value data 3 Plug the power cord into the power outlet and turn the unit on 4 Check the SETUP MENU and set its items as required 1 While holding down the key press the VOL key 2 The SETUP MENU appears Fig 1 3 Check the items in the SETUP MENU by comparing them with the data...

Page 10: ...PTE Apply the Component signal COLOR TEMP BAL COLOR TEMP LOW HIGH LOW BLUE DRIVE MIN MAX 127 steps 000 RED DRIVE MIN MAX 127 steps 000 GREEN CUTOFF MIN MAX 205 steps 000 BLUE CUTOFF MIN MAX 205 steps 000 RED CUTOFF MIN MAX 205 steps 000 SIZE POSI ADJ H SIZE 20 20 00 Reduced to 00 20 during the under scan mode H POSITION 20 20 00 V SIZE 20 20 00 V POSITION 20 20 00 ZOOM H SIZE 20 00 00 ZOOM V SIZE ...

Page 11: ...OL FREQ HIGH LOW OFF HIGH SLOT CONDITION Type of boards installed in the rear panel slots INPUT A F SLOT1 INPUT A B SLOT2 INPUT C D SLOT3 INPUT E F sub menu POSITION LOWER UPPER LOWER AREA MARKER MARKER SELECT OFF LINE S HALF HALF L S BLK BLK L OFF ZOOM OFF ON OFF ASPECT SELECT 4 3 13 9 14 9 4 3 SAFEY AREA OFF 80 88 90 OFF R MARKER SELECT OFF LINE S HALF HALF L S BLK BLK L OFF R ZOOM OFF ON OFF R ...

Page 12: ... tweezers 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 indi...

Page 13: ...other than those that should be set before each adjustment reset them to the initial values according to the table on page 1 10 before proceeding to the adjustment Correct adjustments will not be possible unless the values of the functions are reset to the initial values 4 3 SETTING ITEMS Begin adjustments with the primary items and then proceed to the secondary items 1 to 3 PRIMARY ADJUSTMENT ITE...

Page 14: ...ENTS AND FIXTURES 1 DC voltmeter or digital voltmeter 2 Oscilloscope 3 Color analyzer colour temperature meter 4 High voltage voltmeter 5 Signal generator Should be compatible with the following signal specifications 6 Scale made of non metallic material 7 IF C01PNG NTSC PAL Video Input Card 8 IF C01COMG Component RGB Input Card 4 5 FOCUS AND SCREEN ADJUSTMENT HOLES The rear panel has the adjustme...

Page 15: ... 13 5 27 12 74 25 74 25 74 25 74 25 74 25 H period 910 768 858 864 858 864 1980 1650 2750 2640 2200 H sync 68 56 63 63 63 63 40 40 44 44 44 44 44 44 H back p 58 70 59 68 59 69 260 260 144 188 144 188 144 188 H disp 768 624 720 720 720 720 1280 1280 1920 1920 1920 V period 263 312 263 312 525 625 750 750 562 562 562 V sync 3 3 3 3 6 5 5 5 5 5 5 V back p 14 19 13 19 30 39 25 20 15 15 15 V disp 243 2...

Page 16: ... FRONT FRONT UPPER FOCUS 1 MIDDLE FOCUS 2 LOWER SCREEN TOP VR505 COVN_V VR504 CONV_H VR501 X RAY TP G TP XR VR502 H VOLTAGE TP 47B TP 47R TP 47G E1 U V R S D P H T T TP GND CN011 CN010 CN004 CN001 CN002 CN003 CN005 S CORRECTION PWB HV CONTROL MODULE PWB SUB DEF MODULE PWB F901 CN010 CN0RD CN00R CN011 TOP ...

Page 17: ...SAGE DISPLAY Fig 4 SERVICE MENU SIGNAL BLOCK Adjustments of the contrast brightness chroma and phase WHITE BALANCE BLOCK Adjustments of the white balance DEFLECTION BLOCK Adjustments of the deflection circuitry CPU BLOCK Setting of the entire system by means of the control values of the microcomputer This block is usually not adjusted in servicing Do not touch it except for adjustment items CC41 a...

Page 18: ...VOL keys 3 Exiting from the Service Menu 1 After completing the adjustment of an item press the MENU key to return to the submenu 2 Press the MENU key again to return to the Service Menu 3 Press the MENU key again to return to the normal screen SIGNAL BLOCK SA VIDEO NTSC SB Y C NTSC SC VIDEO PAL SD YC PAL SE COMP 480 60i SF COMP 576 50i SG COMP 480 60p SH COMP 576 50p XXXXX X XXXXX XXXX XXXX XXXX ...

Page 19: ...BALANCE BLOCK WI COMP 1080i HIGH WJ COMP 1080i LOW WK COMP 1035 60i HIGH WL COMP 1035 60i LOW WM COMP 1080 50i HIGH WN COMP 1080 50i LOW WO COMP 1080 24psF HIGH WP COMP 1080 24psF LOW EXIT MENU SELECT ENTER WHITE BALANCE BLOCK 1 3 WHITE BALANCE BLOCK 2 3 XXXXX X XXXXX XXXX XXXX XXXX XXX S A01 XXXXX X XXXXX XXXX XXXX XXXX XXX S I01 SA VIDEO NTSC SI COMP 1080 60i SIGNAL BLOCK SA VIDEO NTSC SB Y C NT...

Page 20: ...ER EXIT MENU ENTER FPGA VERSION FPGA VERSION XXXXX X XXXXX XXXX XXXX XXXX XXX CPU BLOCK SIGNAL BLOCK WHITE BALANCE BLOCK DEFLECTION BLOCK CPU BLOCK DIAGNOSIS UPC1884 ADJ TA1276 ADJ HOUR METER EXIT MENU SELECT ENTER EXIT MENU SELECT ENTER SERVICE MENU CA MENU UPDATE CPU PROGRAM E2PROM VERSION FPGA VERSION INITIALIZE EEPROM UPDATE CPU PROGRAM Necessity PC cable terminal software CURRENT Ver UPDATE C...

Page 21: ...4 063 018 S B02 BRIGHT HIGH 128 127 000 S B03 CHROMA 064 063 000 S B04 PHASE 064 063 000 S B05 APERTURE 064 063 000 S B06 BRIGHT LOW 128 127 000 S B07 Y DL 000 001 000 Fixed value S B08 R Y PHASE 000 003 000 Fixed value S B09 R B GAIN 000 003 002 Fixed value S B10 G Y PHASE 000 003 001 Fixed value S B11 G B GAIN 000 003 003 Fixed value SC VIDEO PAL S C01 CONTRAST 064 063 018 S C02 BRIGHT HIGH 128 ...

Page 22: ...G B GAIN 000 003 003 Fixed value SF COMP 576 50i S F01 CONTRAST 064 063 018 S F02 BRIGHT HIGH 128 127 000 S F03 CHROMA 064 063 000 S F04 PHASE 064 063 000 S F05 APERTURE 064 063 000 S F06 BRIGHT LOW 128 127 000 S F07 Y DL 000 001 000 Fixed value S F08 R Y PHASE 000 003 000 Fixed value S F09 R B GAIN 000 003 002 Fixed value S F10 G Y PHASE 000 003 002 Fixed value S F11 G B GAIN 000 003 003 Fixed va...

Page 23: ...001 000 Fixed value S I08 R Y PHASE 000 003 000 Fixed value S I09 R B GAIN 000 003 003 Fixed value S I10 G Y PHASE 000 003 002 Fixed value S I11 G B GAIN 000 003 000 Fixed value SJ COMP 1035 60i S J01 CONTRAST 064 063 000 S J02 BRIGHT HIGH 128 127 000 S J03 CHROMA 064 063 000 S J04 PHASE 064 063 000 S J05 APERTURE 064 063 000 S J06 BRIGHT LOW 128 127 000 S J07 Y DL 000 001 000 Fixed value S J08 R ...

Page 24: ...ONTRAST 064 063 002 S M02 BRIGHT HIGH 128 127 000 S M03 CHROMA 064 063 000 S M04 PHASE 064 063 000 S M05 APERTURE 064 063 000 S M06 BRIGHT LOW 128 127 000 S M07 Y DL 000 001 000 Fixed value S M08 R Y PHASE 000 003 000 Fixed value S M09 R B GAIN 000 003 003 Fixed value S M10 G Y PHASE 000 003 002 Fixed value S M11 G B GAIN 000 003 000 Fixed value SN COMP 720 50p S N01 CONTRAST 064 063 000 S N02 BRI...

Page 25: ...GH 128 127 000 S P18 576i BRIGHT LOW 128 127 000 S P19 480p CONTRAST 064 063 007 S P20 480p BRIGHT HIGH 128 127 000 S P21 480p BRIGHT LOW 128 127 000 S P22 576p CONTRAST 064 063 007 S P23 576p BRIGHT HIGH 128 127 000 S P24 576p BRIGHT LOW 128 127 000 S P25 1080 60i CONTRAST 064 063 007 S P26 1080 60i BRIGHT HIGH 128 127 000 S P27 1080 60i BRIGHT LOW 128 127 000 S P28 1035 60i CONTRAST 064 063 007 ...

Page 26: ...ERSCAN BRIGHT HIGH 128 127 000 S Q18 PAL COMPOS UNDERSCAN BRIGHT LOW 128 127 000 S Q19 PAL Y C OVERSCAN CONTRAST 064 063 011 S Q20 PAL Y C OVERSCAN BRIGHT HIGH 128 127 000 S Q21 PAL Y C OVERSCAN BRIGHT LOW 128 127 000 S Q22 PAL Y C UNDERSCAN CONTRAST 064 063 011 S Q23 PAL Y C UNDERSCAN BRIGHT HIGH 128 127 000 S Q24 PAL Y C UNDERSCAN BRIGHT LOW 128 127 000 S Q25 480i OVERSCAN CONTRAST 064 063 011 S...

Page 27: ...POS ZOOMSCAN CONTRAST 064 063 009 S S02 NTSC COMPOS ZOOMSCAN BRIGHT HIGH 128 127 000 S S03 NTSC COMPOS ZOOMSCAN BRIGHT LOW 128 127 000 S S04 NTSC Y C ZOOMSCAN CONTRAST 064 063 009 S S05 NTSC Y C ZOOMSCAN BRIGHT HIGH 128 127 000 S S06 NTSC Y C ZOOMSCAN BRIGHT LOW 128 127 000 S S07 PAL COMPOS ZOOMSCAN CONTRAST 064 063 009 S S08 PAL COMPOS ZOOMSCAN BRIGHT HIGH 128 127 000 S S09 PAL COMPOS ZOOMSCAN BR...

Page 28: ...W 128 127 000 S S40 720 50p ZOOMSCAN CONTRAST 064 063 009 S S41 720 50p ZOOMSCAN BRIGHT HIGH 128 127 000 S S42 720 50p ZOOMSCAN BRIGHT LOW 128 127 000 ST HD SD MODE S T01 NTSC COMPOS HD SD CONTRAST 064 063 000 S T02 NTSC COMPOS HD SD BRIGHT HIGH 128 127 000 S T03 NTSC COMPOS HD SD BRIGHT LOW 128 127 000 S T04 NTSC Y C HD SD CONTRAST 064 063 000 S T05 NTSC Y C HD SD BRIGHT HIGH 128 127 000 S T06 NT...

Page 29: ... 128 127 000 W C04 CUTOFF R 128 127 000 W C05 CUTOFF G 128 127 000 W C06 CUTOFF B 128 127 000 WD PAL COMPOS Y C LOW W D01 DRIVE R 128 127 000 W D02 DRIVE G 000 W D03 DRIVE B 128 127 000 W D04 CUTOFF R 128 127 000 W D05 CUTOFF G 128 127 000 W D06 CUTOFF B 128 127 000 WE COMP 480 576 i HIGH W E01 DRIVE R 128 127 000 W E02 DRIVE G 000 W E03 DRIVE B 128 127 000 W E04 CUTOFF R 128 127 000 W E05 CUTOFF ...

Page 30: ...0 W I04 CUTOFF R 128 127 000 W I05 CUTOFF G 128 127 000 W I06 CUTOFF B 128 127 000 WJ COMP 1080 60i LOW W J01 DRIVE R 128 127 000 W J02 DRIVE G 000 W J03 DRIVE B 128 127 000 W J04 CUTOFF R 128 127 000 W J05 CUTOFF G 128 127 000 W J06 CUTOFF B 128 127 000 WK COMP 1035 60i HIGH W K01 DRIVE R 128 127 000 W K02 DRIVE G 000 W K03 DRIVE B 128 127 000 W K04 CUTOFF R 128 127 000 W K05 CUTOFF G 128 127 000...

Page 31: ...00 W O04 CUTOFF R 128 127 000 W O05 CUTOFF G 128 127 000 W O06 CUTOFF B 128 127 000 WP COMP 1080 24psF LOW W P01 DRIVE R 128 127 000 W P02 DRIVE G 000 W P03 DRIVE B 128 127 000 W P04 CUTOFF R 128 127 000 W P05 CUTOFF G 128 127 000 W P06 CUTOFF B 128 127 000 WQ COMP 720 60p HIGH W Q01 DRIVE R 128 127 000 W Q02 DRIVE G 000 W Q03 DRIVE B 128 127 000 W Q04 CUTOFF R 128 127 000 W Q05 CUTOFF G 128 127 0...

Page 32: ...1 DRIVE R 128 127 000 W V02 DRIVE G 000 W V03 DRIVE B 128 127 000 W V04 CUTOFF R 128 127 000 W V05 CUTOFF G 128 127 000 W V06 CUTOFF B 128 127 000 WW COMMON HIGH NOTE When the value of item WW is changed it is necessary to readjust white balance HIGH of all signals W W01 DRIVE R 000 127 070 W W02 DRIVE G 064 W W03 DRIVE B 000 127 060 W W04 CUTOFF R 000 255 050 W W05 CUTOFF G 000 255 050 W W06 CUTO...

Page 33: ...6 CORNER DISTORTION W 032 032 000 D B07 CORNER DISTORTION S 032 032 000 D B08 PARALLELOGRAM DISTORTION 032 032 000 D B09 TRAPEZOIDAL DISTORTION 032 032 000 D B10 HORIZONTAL ARC DISTORTION 032 032 000 D B11 VERTICAL LINEARITY S CORRECTION 016 016 000 D B12 VERTICAL LINEARITY C CORRECTION 016 016 000 DC PAL COMPOS Y C OVER D C01 HORIZONTAL SIZE 064 064 016 D C02 VERTICAL SIZE 064 064 010 D C03 HORIZ...

Page 34: ...32 002 D E09 TRAPEZOIDAL DISTORTION 032 032 003 D E10 HORIZONTAL ARC DISTORTION 032 032 000 D E11 VERTICAL LINEARITY S CORRECTION 016 016 005 D E12 VERTICAL LINEARITY C CORRECTION 016 016 003 DF 480 60i UNDER D F01 HORIZONTAL SIZE 064 064 009 D F02 VERTICAL SIZE 064 064 024 D F03 HORIZONTAL POSITION 064 064 000 D F04 VERTICAL POSITION 064 064 000 D F05 SIDE PIN DISTORTION 032 032 000 D F06 CORNER ...

Page 35: ...TY S CORRECTION 016 016 000 D H12 VERTICAL LINEARITY C CORRECTION 016 016 000 DI 480 60p OVER D I01 HORIZONTAL SIZE 064 064 028 D I02 VERTICAL SIZE 064 064 015 D I03 HORIZONTAL POSITION 064 064 012 D I04 VERTICAL POSITION 064 064 005 D I05 SIDE PIN DISTORTION 032 032 002 D I06 CORNER DISTORTION W 032 032 000 D I07 CORNER DISTORTION S 032 032 000 D I08 PARALLELOGRAM DISTORTION 032 032 000 D I09 TRA...

Page 36: ...64 025 D L03 HORIZONTAL POSITION 064 064 000 D L04 VERTICAL POSITION 064 064 000 D L05 SIDE PIN DISTORTION 032 032 000 D L06 CORNER DISTORTION W 032 032 000 D L07 CORNER DISTORTION S 032 032 000 D L08 PARALLELOGRAM DISTORTION 032 032 000 D L09 TRAPEZOIDAL DISTORTION 032 032 000 D L10 HORIZONTAL ARC DISTORTION 032 032 000 D L11 VERTICAL LINEARITY S CORRECTION 016 016 000 D L12 VERTICAL LINEARITY C ...

Page 37: ... 000 D O07 CORNER DISTORTION S 032 032 000 D O08 PARALLELOGRAM DISTORTION 032 032 000 D O09 TRAPEZOIDAL DISTORTION 032 032 001 D O10 HORIZONTAL ARC DISTORTION 032 032 000 D O11 VERTICAL LINEARITY S CORRECTION 016 016 002 D O12 VERTICAL LINEARITY C CORRECTION 016 016 000 DP 1035 60i UNDER D P01 HORIZONTAL SIZE 064 064 012 D P02 VERTICAL SIZE 064 064 030 D P03 HORIZONTAL POSITION 064 064 000 D P04 V...

Page 38: ... 032 000 D R10 HORIZONTAL ARC DISTORTION 032 032 000 D R11 VERTICAL LINEARITY S CORRECTION 016 016 000 D R12 VERTICAL LINEARITY C CORRECTION 016 016 000 DS 1080 24pF OVER D S01 HORIZONTAL SIZE 064 064 030 D S02 VERTICAL SIZE 064 064 010 D S03 HORIZONTAL POSITION 064 064 037 D S04 VERTICAL POSITION 064 064 000 D S05 SIDE PIN DISTORTION 032 032 017 D S06 CORNER DISTORTION W 032 032 000 D S07 CORNER ...

Page 39: ...AL LINEARITY C CORRECTION 016 016 000 DV 720 60p UNDER D V01 HORIZONTAL SIZE 064 064 017 D V02 VERTICAL SIZE 064 064 028 D V03 HORIZONTAL POSITION 064 064 000 D V04 VERTICAL POSITION 064 064 001 D V05 SIDE PIN DISTORTION 032 032 001 D V06 CORNER DISTORTION W 032 032 000 D V07 CORNER DISTORTION S 032 032 000 D V08 PARALLELOGRAM DISTORTION 032 032 000 D V09 TRAPEZOIDAL DISTORTION 032 032 000 D V10 H...

Page 40: ...RSCAN VERTICAL POSITION 064 064 001 D Y06 NTSC UNDERSCAN SIDE PIN DISTORTION 032 032 012 D Y07 PAL OVERSCAN VERTICAL SIZE 064 064 005 D Y08 PAL OVERSCAN VERTICAL POSITION 064 064 001 D Y09 PAL OVERSCAN SIDE PIN DISTORTION 032 032 012 D Y10 PAL UNDERSCAN VERTICAL SIZE 064 064 005 D Y11 PAL UNDERSCAN VERTICAL POSITION 064 064 001 D Y12 PAL UNDERSCAN SIDE PIN DISTORTION 032 032 012 D Y13 480i OVERSCA...

Page 41: ... VERTICAL LINEARITY C CORRECTION 016 016 003 D Z06 55 65Hz FOCUS PARABOLA 032 032 000 D Z07 720 60p VERTICAL LINEARITY S CORRECTION 016 016 000 D Z08 720 60p VERTICAL LINEARITY C CORRECTION 016 016 000 D Z09 720 60p FOCUS PARABOLA 032 032 030 D1 ROTATION PURITY D 101 ROTATION 032 031 017 D 102 PURITY 128 127 000 D2 COMMON D 201 HORIZONTAL SIZE 000 127 063 D 202 VERTICAL SIZE 000 127 063 D 203 HORI...

Page 42: ...N 032 032 000 C E13 PAL 576 50i TRAPEZOIDAL DISTORTION 032 032 002 C E14 PAL 576 50i HORIZONTAL ARC DISTORTION 032 032 000 C E15 480 60p CORNER DISTORTION W 032 032 000 C E16 480 60p CORNER DISTORTION S 032 032 000 C E17 480 60p PARALLELOGRAM DISTORTION 032 032 000 C E18 480 60p TRAPEZOIDAL DISTORTION 032 032 002 C E19 480 60p HORIZONTAL ARC DISTORTION 032 032 000 C E20 576 50p CORNER DISTORTION W...

Page 43: ...V 10 Observe the waveforms of TP 47R and TP 47B adjust the SCREEN VR so that the amplitude voltage A of the AKB pulse become to 25V 2V 11 Apply the 1080 60i crosshatch signal to INPUT A 12 Adjust the FOCUS VR1 and VR2 so that the entire image is in focus 1 Vertical interval V sync AKB pulse V BLK A 25V 2V 4 10 1 SCREEN VOLTAGE COARSE ADJUSTMENT HIGH VOLTAGE COARSE ADJUSTMENT Measuring Instruments ...

Page 44: ...rn the VR501 clockwise until the voltmeter reading is 5 5 V 9 Turn the VR501 slowly clockwise until the point at which the X ray protector starts operation The power turns off at the first operation and then turns on again 5 seconds later At the second operation the power turns off and the LED of the INPUT SELECT D of the front panel blinks When two operations are done consecutively it stops at th...

Page 45: ... the VR502 in the adjusted position 8 Set the CONTRAST and BRIGHT potentiometers on the front panel to the center click positions 4 10 4 HIGH VOLTAGE ADJUSTMENT S CORRECTION PWB MAIN PWB Front side TP XR TP G Front side Min Max Min Max VR505 CONV_V VR504 CONV_H VR502 H VOLTAGE VR501 X RAY CN0RD CN00R Top surface view of S CORRECTION PWB VR505 VR504 VR502 VR501 CN0RD CN00R VR502 VR501 FOCUS ADJUSTM...

Page 46: ...an 1 5 mm 1 5 mm or less above or below the middle line If the reference point which is the vertical center position on the left of the image reference points is deviated adjust DM04 to correct it 4 10 6 IMAGE ROTATION ADJUSTMENT Escutcheon Screen size Reference point 1 5 mm 1 5 mm S CORRECTION PWB MAIN PWB Front side Front side Top surface view of S CORRECTION PWB TP XR TP G VR505 CONV_V VR504 CO...

Page 47: ...e 1080 60i crosshatch signal with circle pattern to INPUT A Terminal Y on the Component RGB Input Card 3 Turn the VR504 to optimize the horizontal convergence value at the center of the screen turning the potentiometer counterclockwise shifts BLUE toward the right with respect to RED 4 Turn the VR505 to optimize the vertical convergence value at the center of the screen turning the potentiometer c...

Page 48: ...he voltage shown in the Table 1 Other signals adjustments 5 Apply the 1080 60i crosshatch signal to INPUT A Terminal Y on the Component RGB Input Card 6 Set the CONTRAST potentiometer on the front panel to the center click position 7 Connect the oscilloscope across TP 47G and TP GND 8 Adjust SI01 in the Service Menu to set the voltage amplitude A in the figure on the right to the voltage shown in ...

Page 49: ...re adjust the data of all of the adjustment signals HDTV SDTV and NTSC PAL When re adjusting the 1080 60i signal use the SI 1 Apply the 480 60i crosshatch signal to INPUT A Terminal Y on the Component RGB Input Card 2 Set the CONTRAST potentiometer on the front panel to the center click position 3 Connect the oscilloscope across TP 47G and TP GND 4 Adjust SE01 in the Service Menu to set the voltag...

Page 50: ...nts When this data is changed it is required to re adjust the data of all of the adjustment signals HDTV SDTV and NTSC PAL When re adjusting the 1080 60i signal use the SI For the adjustment of the 1080 60i signal use the Component RGB Input Card 1 Apply the NTSC crosshatch signal to INPUT C Terminal VIDEO1 on the NTSC PAL Video Input Card 2 Set the CONTRAST potentiometer on the front panel to the...

Page 51: ...tments When this data is changed it is required to re adjust the data of all of the adjustment signals HDTV SDTV and NTSC PAL When re adjusting the 1080 60i signal use the SI For the adjustment of the 1080 60i signal use the Component RGB Input Card 1 Apply the NTSC crosshatch signal to INPUT D Terminal Y C on the NTSC PAL Video Input Card 2 Set the CONTRAST potentiometer on the front panel to the...

Page 52: ...re adjusting the 1080 60i signal use the SI 1 Apply the 1080 60i component color bar signal to INPUT A 2 Set the CHROMA and PHASE potentiometers on the front panel to the center click positions 3 Connect the oscilloscope across TP 47B and TP GND 4 Adjust SR03 in the Service Menu to set the level difference between waveforms 1 and 4 in the figure on the right to 0 V 2 V 5 Adjust SR04 to set the lev...

Page 53: ...quired to re adjust the data of all of the adjustment signals Component NTSC and PAL When re adjusting the 1080 60i signal use the SI For the adjustment of the 1080 60i signal use the Component RGB Input Card 1 Apply the NTSC 75 color bar signal to INPUT C Terminal VIDEO1 on the NTSC PAL Video Input Card 2 Set the CHROMA and PHASE potentiometers on the front panel to the center click positions 3 C...

Page 54: ... When this data is changed it is required to re adjust the data of all of the adjustment signals Component NTSC and PAL When re adjusting the 1080 60i signal use the SI For the adjustment of the 1080 60i signal use the Component RGB Input Card 1 Apply the PAL 75 color bar signal to INPUT C Terminal VIDEO1 on the NTSC PAL Video Input Card 2 Set the CHROMA and PHASE potentiometers on the front panel...

Page 55: ...not deviated If it is adjust DM04 again 9 Adjust DM11 DM12 and DM04 repeatedly until the center position and vertical linearity are optimized 10 Adjust DM09 to optimize the trapezoidal distortion observe the second vertical lines from the left and right edges as the reference 11 Adjust DM08 to optimize the parallelogram distortion observe the second vertical lines from the left and right edges as ...

Page 56: ...izes of the rectangles at the center of the image and those at the left and right ends to be identical 8 Adjust DN12 to set the sizes of the rectangles at the center of the image and those at the top and bottom to be identical 9 Ensure that the center position is not deviated If it is adjust DN04 again 10 Adjust DN11 DN12 and DN04 repeatedly until the center position and vertical linearity are opt...

Page 57: ...timize the horizontal arc distortion 13 Adjust DE05 so that the second vertical lines from the left and right edges are linear 14 If there is an extreme corner S shape distortion adjust DE07 to optimize it this adjustment is usually unnecessary 15 If there is an extreme corner W shape distortion adjust DE06 to optimize it this adjustment is usually unnecessary 16 Apply the 480 60i size adjustment ...

Page 58: ...rve the second vertical lines from the left and right edges as the reference 13 Adjust DF10 to optimize the horizontal arc distortion 14 Adjust DF05 so that the second vertical lines from the left and right edges are linear 15 If there is an extreme corner S shape distortion adjust DF07 to optimize it this adjustment is usually unnecessary 16 If there is an extreme corner W shape distortion adjust...

Page 59: ...ustment is usually unnecessary 12 If there is an extreme corner W shape distortion adjust CE05 to optimize it this adjustment is usually unnecessary 13 Apply the 480 60i size adjustment signal to INPUT A 14 Ensure that the vertical amplitude of the image is 193mm If it is not adjust DY13 again 15 Adjust DY14 so that the vertical position of the image comes at the center of the CRT screen 16 Vary t...

Page 60: ...at the center of the CRT screen 16 Vary the adjustment signal and adjustment data and re perform adjustments in steps 1 to 15 above see Table 13 175mm Make these lines linear Screen size Scanning size 100 Adjustment Adjustment Adjustment Data Step No Signal Vertical Vertical Side Pin Corner Corner Parallelogram Trapezoidal Horizontal Position size Distortion Distortion W Distortion S Distortion Di...

Page 61: ...p and bottom to be identical 8 Ensure that the center position is not deviated If it is adjust DA04 again 9 Adjust DA11 DA12 and DA04 repeatedly until the center position and vertical linearity are optimized 10 Adjust DA09 to optimize the trapezoidal distortion observe the second vertical lines from the left and right edges as the reference 11 Adjust DA08 to optimize the parallelogram distortion o...

Page 62: ...gram distortion observe the second vertical lines from the left and right edges as the reference 13 Adjust DB10 to optimize the horizontal arc distortion 14 Adjust DB05 so that the second vertical lines from the left and right edges are linear 15 If there is an extreme corner S shape distortion adjust DB07 to optimize it this adjustment is usually unnecessary 16 If there is an extreme corner W sha...

Page 63: ...he vertical position of the image comes at the center of the CRT screen 16 Vary the adjustment signal and adjustment data and re perform adjustments in steps 1 to 15 above see Table 16 90 90 80 80 80 193mm 90 Make these lines linear Screen size Adjustment Adjustment Adjustment Data Step No Signal Vertical Vertical Side Pin Corner Corner Parallelogram Trapezoidal Horizontal Position size Distortion...

Page 64: ...djust CE06 to optimize it this adjustment is usually unnecessary 12 If there is an extreme corner W shape distortion adjust CE05 to optimize it this adjustment is usually unnecessary 13 Apply the NTSC mono scope signal to INPUT C 14 Ensure that the vertical amplitude of the image is 175mm If it is not adjust DY04 again 15 Adjust DY05 so that the vertical position of the image comes at the center o...

Page 65: ... 3 Set the PHASE CHROMA BRIGHT and CONTRAST potentiometers on the front panel to the center click positions 4 Observe the AKB pulse waveforms of TP 47R TP 47G TP 47B and ensure that the voltage A of the smallest AKB Pulse color is 25V 2V If it is not readjust it using the SCREEN VR 5 Apply the 1080 60i component 10 step gray scale signal to INPUT A 6 Turn the BRIGHT potentiometer on the front pane...

Page 66: ...enu to 00 The values adjusted with WW become the reference values for the following adjustment When this data is changed it is required to re adjust the white balance data of all of the adjustment signals Component NTSC and PAL When re adjusting the 1080 60i signal use the WI 1 Apply the 1080 60i component 10 step gray scale signal to INPUT A 2 Set COLOR TEMP of COLOR TEMP BAL in the Setup Menu to...

Page 67: ...Menu to 00 The values adjusted with WX become the reference values for the following adjustment When this data is changed it is required to re adjust the white balance data of all of the adjustment signals Component NTSC and PAL When re adjusting the 1080 60i signal use the WJ 1 Apply the 1080 60i component 10 step gray scale signal to INPUT A 2 Set COLOR TEMP of COLOR TEMP BAL in the Setup Menu t...

Page 68: ...el to the center click positions 4 Adjust WA01 and WA03 in the Service Menu using the color temperature meter so that the color temperature is set as shown below Do not touch WA02 Color temperature HIGH D9300 x 0 283 y 0 297 Reference value 5 Ensure that the white balance tracking is correct from the gray scale steps with lower color temperatures to those with higher color temperatures If the whit...

Page 69: ...o that the 0 black area in the gray scale signal lights up slightly Be sure to avoid degradation of the black color White Balance LOW D65 5 Set COLOR TEMP of COLOR TEMP BAL in the Setup Menu to LOW 6 Adjust SR06 so that the 0 black area in the gray scale signal lights slightly Be sure to avoid degradation of the black color Other signals adjustments White Balance HIGH D9300 7 Apply the 1080 60i co...

Page 70: ...e ASPECT button on the front panel to OFF and the UNDER SCAN button to ON to set the scanning size to underscanning for the 4 3 ratio 8 Adjust SP14 so that the 0 black area in the gray scale signal lights up slightly Be sure to avoid degradation of the black color 9 Set the ASPECT button on the front panel to ON to set the scanning size to underscanning for the 16 9 ratio 10 Adjust SQ29 so that th...

Page 71: ... so that the scanning size is 16 9 6 Adjust SQ02 so that the 0 black area in the gray scale signal lights slightly Be sure to avoid degradation of the black color 7 Set the ASPECT button on the front panel to OFF and the UNDER SCAN button to ON to set the scanning size to underscanning for the 4 3 ratio 8 Adjust SP02 so that the 0 black area in the gray scale signal lights up slightly Be sure to a...

Page 72: ...so that the scanning size is 16 9 6 Adjust SQ08 so that the 0 black area in the gray scale signal lights slightly Be sure to avoid degradation of the black color 7 Set the ASPECT button on the front panel to OFF and the UNDER SCAN button to ON to set the scanning size to underscanning for the 4 3 ratio 8 Adjust SP05 so that the 0 black area in the gray scale signal lights up slightly Be sure to av...

Page 73: ...The main microcomputer detects any abnormalities in communication on the I2 C and causes the LEDs to blink At the same time the unit is turned off to protect it but the LEDs keep on blinking At this time the main microcomputer does not accept commands except for the POWER switch on the front panel 2 How to cancel the LED blinking Press the POWER switch on the front panel to turn the unit ON again ...

Page 74: ... shown on the high select CLEAR A new screen appears Press the VOL on the front panel to select YES This clears the trouble history in the self diagnosis mode and the symbols displayed to the right of all of the items become 3 Trouble history The trouble history of each item is counted up to 9 The figure is held in the memory until the trouble history is cleared As a result the displayed trouble h...

Page 75: ...ENU MUTIN G SCREEN S CHEC K A SPECT A REA MARKER UNDE R SCAN P ULS E CROS S COLO R OF F SLOT 2 C D SLOT 3 POWER E F I NPUT SELECT VOLUME SLOT1 A B DEGAUSS MENU MUTING SCREENS CHECK ASPECT AREA MARKER UNDER SCAN PULSE CROSS COLOR OFF SLOT2 C D SLOT3 POWER E F INPUT SELECT 466 5 454 415 286 68 2 5 1 5 DIMENSIONS No 52152 1 75 ...

Page 76: ... No 52152 Printed in Japan WPC VICTOR COMPANY OF JAPAN LIMITED AV Multimedia Company 12 3 chome Moriya cho Kanagawa ku Yokohama Kanagawa 221 8528 Japan ...

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JVC DT-V1710CG, Service Manual, Page: 48 / 76

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