SERVICE MANUAL
Contents
1. VSSA GND VDD 2 5 2 5V VDDA 2 5 2 5V VSS GND R R for teletext Co By N VDD 3 5 3 5V G G for teletext P0 0 Address Data for scaler IC B B for teletext P0 1 Address Data for scaler IC BLANK COR Ys for Teletext P0 2 Address Data for scaler IC NC4 Not used P0 3 Address Data for scaler IC P1 7 Reset for Scaler IC H Reset 4 Not used NC5 Not used P0 5 Address latch Enable WR Write for memory P0 6 Not used RD Read for memory P0 7 Not used Not used ENE Not used Program ROM address for CPU STOP Not used Program ROM address for CPU OCF Not used Program ROM address for CPU EXTIF Not used Program ROM address for CPU CVBS Video for teletext Program ROM address for CPU VDDA 2 5 2 5V Test purpose VSSA GND 2 5V P2 0 Scart2 ID H Detect GND P2 1 key scan data 1 3 3V P2 2 key scan data 2 Program ROM address for CPU P2 3 Scaet1 ID H Detect Program ROM address for CPU NC1 Not used Program ROM address for CPU HS SSC Horizontal sync O Program ROM address for CPU VS Vertical sync Test purpose P3 0 Data Read for Scaler IC Program ROM address for CPU P3 1 Comunication for adjustment H TXD Prog2. 750 Pb Pr 0 35V p p 75 Q Y 1 V Positive Negative sync provided 75 Q Cb Cr 0 7V p p 75 Q DIGITAL Input DVI D signal link 19pin connector x 1 Digital input terminal is not compatible with computer signal Headphone 3 5 mm stereo mini jack x 1 Remote Control Unit RM C1816S AA R6 dry cell battery x 2 Design amp specifications are subject to change without notice 1 2 No YA369 1 1 SECTION 1 PRECAUTION SAFETY PRECAUTIONS EXCEPT FOR UK 1 The design of this product contains special hardware many circuits and components specially for safety purposes For continued protection no changes should be made to the original design unless authorized in writing by the manufacturer Replacement parts must be identical to those used in the original circuits Service should be performed by qualified personnel only 2 Alterations of the design or circuitry of the products should not be made Any design alterations or additions will void the manufacturer s warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom 3 Many electrical and mechanical parts in the products have special safety related characteristics These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage wattage
3. 3 3 REPLACEMENT OF CHIP COMPONENT 3 3 1 CAUTIONS 1 Avoid heating for more than 3 seconds 2 Do not rub the electrodes and the resist parts of the pattern 3 When removing a chip part melt the solder adequately 4 Do not reuse a chip part after removing it 3 3 2 SOLDERING IRON 1 Use a high insulation soldering iron with a thin pointed end of it 2 A 30w soldering iron is recommended for easily removing parts 3 3 3 REPLACEMENT STEPS 1 How to remove Chip parts Resistors capacitors etc 2 How to install Chip parts 1 As shown in the figure push the part with tweezers and Resistors capacitors etc alternately melt the solder at each end 1 Apply solder to the pattern as indicated in the figure NN b 1 E 2 Grasp the chip part with tweezers and place it on the solder Then heat and melt the solder at both ends of the chip part 2 Shift with the tweezers and remove the chip part Transistors diodes variable resistors etc 1 Apply extra solder to each lead Transistors diodes variable resistors etc 1 Apply solder to the pattern as indicated in the figure 2 Grasp the chip part with tweezers and place it on the solder WW 3 First solder lead A as indicated in the figure SOLDER SOLDER 2 As shown in the figure push the part with tweezers and A alternately melt the solder at each lead Shift and remove B the chip part 4 Then solder l
4. No YA369 4 7 ADJUSTMENT PROCEDURE 4 7 1 VIDEO CIRCUIT Measuring instrument Remote 1 ADJUST 1 Receive a PAL 75 all white signal control unit S013 R DRIVE Red drive 2 Set PICTURE MODE to STANDARD HIGHLIGHT S015 G DRIVE Green drive 3 Set ZOOM to FULL Signal S017 B DRIVE Blue drive 4 Set COLOUR TEMP to NORMAL generator 5 Select 1 ADJUST from the SERVICE MODE 6 Set lt 5013 gt R DRIVE lt 5015 gt DRIVE 26V inch and lt S017 gt B DRIVE to setting values of left Models Setting Value table LT 26A61BJ 146 7 Adjust to Keep one of lt S030 gt Red drive LT 26A61BU 146 lt 031 gt Green drive or lt S032 gt Blue LT 26A61BU C 140 drive unchanged then lower the other two LT 26A61SJ 140 so that the all white screen is equally white LT 26A61SU 140 throughout LT 26A61SU C 146 NOTE z Set one or more of lt S013 gt lt S015 gt and 32V inch lt S017 gt to setting values of left table Models Setting Value 8 Check that white balance is properly tracked LT 32A61BJ 146 from low light to high light If the white balance LT 32A61BU 146 tracking is deviated adjust to correct it LT 32A61BU C 140 9 Press the MUTING key to memoirze the set LT 32A61SJ 150 value LT 32A61SU LT 32A61SU C Test point Adjustment part Description SECTION 5 TROUBLESHOOTING This service manual doe
5. 2 1 W TV RF System CCIR B G D K L Colour System PAL SECAM NTSC 3 58 4 43 EXT only Stereo System NICAM B G 1 D K L A2 B G D K Teletext System FLOF Fastext level 2 5 TOP WST World Standard system Receiving Frequency VHF 47MHz 470 2 UHF 470MHz 862MHz Intermediate 38 9MHz B G D K L Frequency 33 4MHz 5 5MHz B G 32 9MHz 6 0MHz 1 32 4MHz 6 5MHz D K Colour Sub Carrier Frequency 4 43MHz 4 40625MHz 4 25MHz 3 58MHz 4 43MHz LCD panel 26V inch wide aspect 16 9 32V inch wide aspect 16 9 Screen Size Diagonal 66 cm H 57 6 cm x V 32 4 cm Diagonal 80 cm H 69 7 cm x V 39 2 cm Display Pixels Horizontal 1366 dots x Vertical 768 dots W XGA Audio Power Output 5W 5W Speaker 6 6 cm round type x 2 Oblique corn Aerial terminal VHF UHF 75 unbalanced coaxial EXT 1 EXT 2 Input Output 21 pin Euro connector SCART socket x 2 EXT 3 Input S Video Video Audio Mini DIN 4 pin x 1 Y 1 V p p Positive Negative sync provided 75 C 0 286 V p p Burst signal 75 1 V p p Positive Negative sync provided 75 O RCA pin jack x 1 500 mV rms High impedance RCA pin jack x 2 EXT 4 Input Component Video 1125i 750p 625p 525p 625i 525i RCA pin jack x 3 Y 1 V Sync signal x0 35V p p 3 value sync
6. Fixed 5001 5015 Video system setting 5 Fixed 0007 0031 1 OPTION Option Setting Fixed 0001 0004 SERVICE MENU 1 ADJUST 2 SELF CHECK Not used 3 12C STOP 4 OPTION Display only 1 ADJUST S001 51 R OF 126 PALSO FULL STD H 4 OPTION Do not adjust 0001 GAMMA TABLE 000 Fig 1 1 12 No YA369 3 2 3 SETTINGS OF FACTORY SHIPMENT 3 2 3 1 BUTTON OPERATION Setting item Setting position 3 2 3 2 REMOTE CONTROL DIRECT OPERATION Setting item Setting position PR1 10 PANORAMIC 3 2 3 3 REMOTE CONTROL MENU OPERATION 1 PICTURE Setting item Setting position 4 FEATURES Setting item OFF Setting position PICTURE MODE BRIGHT SLEEP TIMER OFF COLOUR TEMP COOL CHILD LOCK ID NO 0000 All CH off FEATURES APPEARANCE TYPE D DIGITAL VNR AUTO LOW BLUE BACK ON COLOUR SYSTEM Depends on PR CH AUTO 4 3 AUTO ASPECT 2 SOUND Setting item PANORAMIC Setting position FAVOURITE SETTING 5 SET UP Setting item Reset Setting position AUTO PROGRAM TV channel automatically set EDIT MANUAL PRESET CH only STEREO 1411 Stereo sound LANGUAGE ENGLISH Centre DECODER EXT 2 OFF Centre EXT SETTING Centre S IN BLANK OFF BLANK EXT 1 2 No YA369 1 13
7. required Taking notes of the connecting points connector numbers makes service procedure manageable Make sure that there is no bent or stain on the connectors before inserting and firmly insert the connectors 3 1 1 REMOVING THE STAND 1 Remove the JACK COVER 2 Remove the STAND COVER by sliding it in the direction of an arrow 3 Remove the 2 screws A then remove the STAND COVER 4 Remove the 2 screws B and 2 screws C then remove the STAND 3 1 2 REMOVING THE REAR COVER Remove the STAND 1 Remove the 8 screws D 1 screw E and 2 screws F then remove the REAR COVER 3 1 3 REMOVING THE POWER PWB Remove the STAND Remove the REAR COVER 1 Remove the 4 screws G and 1 screw H then remove the TERMINAL BASE 2 Remove the 8 screws J then remove the BACK BRACKET 3 Remove the 6 screws K then remove the POWER PWB SHIELD 4 Remove the 5 screws L then remove the POWER PWB 3 1 4 REMOVING THE MAIN PWB Remove the STAND Remove the REAR COVER Remove the TERMINAL BASE Remove the BACK BRACKET Remove the POWER PWB SHIELD 1 Remove the 7 screws M and 2 screws N then remove the MAIN PWB SHIELD 2 Remove the 6 screws P then remove the MAIN PWB 3 1 5 REMOVING THE KEY PWB Remove the STAND Remove the REAR COVER 1 Remove the 2 screws Q then remove the KEY PWB 1 10 No YA369 3 1 6 REMOVING THE LED PWB Remove the STAND Remove the REAR COV
8. 43 001 M009 A001 A003 D001 0051 SD01 SD15 DDO7 0031 Setting item Video system setting 1 Video system setting 2 Audio System Setting Video system setting 3 Video system setting 4 Video system setting 5 6 SETTING ITEM NO Setting item numbers are displayed For the setting item names to be displayed refer to INITIAL SETTING VALUES IN THE SERVICE MODE 7 SETTING VALUE DATA The SETTING VALUE is displayed 4 5 6 OPTION MODE Do not adjust Display of optin data setting 4 5 6 1 DESCRIPTION OF STATUS DISPLAY OPTION MODE SCREEN SETTINGITEM No SETTINGITEM SETTING VALUE DATA 1 SETTING ITEM NAME Setting item name are displayed The setting item numbers to be displayed are listed below Item No 0001 0004 Setting item optin data setting Do not adjust 2 SETTING ITEM NO Setting item numbers are displayed For the setting item names to be displayed refer to INITIAL SETTING VALUES IN THE SERVICE MODE 3 SETTING VALUE DATA The SETTING VALUE is displayed 4 6 INITIAL SETTING VALUES IN THE SERVICE MODE Perform fine tuning based on the initial values using the remote control when in the Service mode The initial values serve only as an indication rough standard and therefore the values with which optimal display can be achieved may be different from the default values But don t change the values that are not written in ADJU
9. ER 1 Remove the 2 screws R then remove the LED PWB 3 1 7 REMOVING THE SPEAKER Remove the STAND Remove the REAR COVER 1 Remove the 6 screws S then remove the SPEAKER L R CAUTION Please do not disassembly the SPEAKER When the speaker is decomposed the performance cannot be kept 3 1 8 REMOVING THE LCD PANEL UNIT Remove the STAND Remove the REAR COVER Remove the TERMINAL BASE Remove the BACK BRACKET 1 Remove the 6 screws T then remove the MAIN BASE 2 Remove the 6 screws U then remove the FRONT PANEL 3 Remove the 2 screws V then remove the TOP FRAME 4 Remove the 2 screws W then remove the BOTTOM FRAME NOTE Pay special attention not to break or damage on the FRONT PANEL The LCD PANEL UNIT is fixed to the FRONT PAMEL atthe back side by using double side adhesive tapes To remove the LCD PANEL UNIT remove the adhesive tape on the FRONT PANEL slowly SPEAKER TERMINAL BASE FRONT PANEL BACK BRACKET MAIN PWB LED PWB REAR COVER KNOB BASE 24 POWER pun ne Reg CONTROL PWB JACK COVER LCD PANEL UNIT TOP FRAME This exploded view shows the LT 32A61 series LT 26A61 series slightly differs from co 9e 5 98 gt gt og gt 55 75 75 58 RE o vo 7 48 INSULATOR Fig 1
10. GND B Used Used 6 AUDIO L input 500mV rms Nominal High impedance L1 Used L2 7 B input 700mV g w 759 Used Used 8 FUNCTION SW 0V 3V Used Used SLOW SW High 8V 12V High impedance 9 GND G Used Used 10 SCL T V LINK Not used Used SCL2 TV LINK 11 G input 700mV 759 Used Used 12 SDA Not used Used SDA2 13 GND R Used Used 14 GND YS Used Not used 15 R C input 700mV 750 Used R Used C2 R C 300MV p p 750 16 Ysinput FAST SW Low 0V 0 4V High 1V 3V 750 Used Used 17 GND VIDEO output Used Used 18 GND VIDEO input Used Used 19 VIDEO output 1 Negative sync 750 Used TV OUT Used LINE OUT 20 VIDEO Y input 1V p p Negative sync 759 Used Used 21 COMMON GND Used Used No YA369 1 7 2 4 HOW TO IDENTIFY MODELS BJ BU SJ and SU models AE is added to the serial No after at the Rating label BU C and SU C models CE is added to the serial No after at the Rating label MODEL No LT 26A60BJ LT 32A60BJ LT 26A60BU LT 32A60BU LT 26A60SJ LT 32A60SJ LT 26A60SU LT 32A60SU ute cE Indicated 2 5 TECHNICAL INFORMATION 2 5 4 LCD PANEL This unit uses the flat type panel LCD Liquid Crystal Display panel that occupies as little space as possible instead of the conventional CRT Cathode Ray Tube as a display unit Since the unit has the two polarizing filter that are at right angles to each other the unit adopts
11. HA 00 31 BRI COL 00 31 BRI TIN 00 31 PWM 00 31 Item name Variable range Setting value 5 S CON 00 63 31 5I S BRI 00 63 10 5 S SHA 00 63 35 5 S COL 00 63 52 5 S TIN 00 63 32 5P S CON 00 63 31 5P S BRI 00 63 10 5P S SHA 00 63 30 5P 5 COL 00 63 52 5P S TIN 00 63 32 HD75 S CON 00 63 31 HD75 S BRI 00 63 10 HD75 S SHA 00 63 45 HD75 S COL 00 63 52 HD75 S TIN 00 63 32 HD25 S CON 00 63 31 HD25 S BRI 00 63 10 HD25 S SHA 00 63 45 HD25 S COL 00 63 52 HD25 S TIN 00 63 32 PC S CON 00 63 35 PC S BRI 00 63 0 PC S SHA 00 63 40 S COL 00 63 52 PC S TIN 00 63 32 4 6 1 5 VIDEO SYSTEM SETTING 4 Fixed values Item name Variable range Setting value 4 6 2 OPTION MODE 5 R DR 00 63 30 4 6 3 OPTION SETTING Fixed values 5 GDR 00 63 26 5 BDR 00 63 30 5P R DR 00 63 30 5P GDR 00 63 26 5P BDR 00 63 30 HD75 R DR 00 63 30 HD75 G DR 00 63 26 HD75 B DR 00 63 30 HD25 R DR 00 63 30 HD25 G DR 00 63 26 HD25 B DR 00 63 PCRDR 00 63 PC G DR 00 63 PC B DR 00 63 Item name Variable range Setting value GAMMA TABLE 000 005 001 DIMMING 000 002 000 HPD SW 000 001 000 HPD DELAY 000 255 010 DVI MCLK 000 255 090 1 18
12. ITAL VNR PICTURE MODE This function cuts down the amount of noise in the original This function can adjust the picture settings automatically picture 2 2 MAIN DIFFERENCE LIST LT 26A61BJ BLACK LT 26A61BU BLACK Item PAINT COLOUR LCD PANLEL UNIT MAIN PWB LT 26A61BU C LT 26A61SJ LT 26A61SU BLACK SILVER SILVER QLD0370 002 JUK lt lt QAL0822 001 lt lt LT 26A61SU C SILVER QLD0408 001 JUK QAL0823 001 QLD0408 001 JUK QAL0823 001 lt LT 32A61BJ LT 32A61BU BLACK BLACK QLD0409 001 JUK lt QAL0825 001 PAINT COLOUR LCD PANLEL UNIT MAIN PWB LT 32A61BU C LT 32A61SJ LT 32A61SU BLACK SILVER SILVER QLD0371 001 JUK lt lt QAL0824 001 lt LT 32A61SU C SILVER QLD0409 001 JUK QAL0825 001 2 3 21 PINEURO CONNECTOR SCART EXT 1 EXT 2 P P Peak to Peak B W Blanking to white peak Pin assignment 20 18 16 14 12 10 8 6 4 2 21 19 17 15 13 11 9 7 5 3 1 Pin No Signal designation Matching value EXT 1 EXT 2 1 AUDIO R output 500mV rms Nominal Low impedance TV OUT Used LINE OUT 2 AUDIO R input 500mV rms Nominal High impedance Used R1 Used R2 3 AUDIO L output 500mV rms Nominal Low impedance Used TV OUT Used LINE OUT 4 AUDIO GND Used Used 5
13. JVC SERVICE MANUAL WIDE LCD PANEL TELEVISION LT 26A61BJ LT 26A61BU LT 26A61BUc LT 26A61SJ LT 26A61SU LT 26A61SU LT 32A61BJ LT 32A61BU LT 32A61BUc LT 32A61SJ LT 32A61SU LT 32A61SU BASIC CHASSIS 2 InteriArt T_i 7 F IAI E W 228 00 299 222 5 5 6 52 8866 5 1 PRECAUTION 422525 5 Rx 1 3 2 SPECIFIC SERVICE 5 1 7 3 DISASSEMBLY olx woah Me chee Da ERREUR ROUEN EUR RA 1 10 4 ADJUSTMENT a bud ei wari dade alee 1 15 5 TROUBLESHOOTING nk lun Rue E ADR eee 1 19 COPYRIGHT 2005 Victor Company of Japan Limited No YA369 2005 12 SPECIFICATION Contents LT 26A61BJ LT 26A61BU LT 26A61SJ LT 26A61SU LT 32A61BJ LT 32A61BU LT 32A61SJ LT 32A61SU Dimensions WxHxD 68 6 cm x 52 5 cm x 26 9 cm Included stand 68 6 cm x 47 4 cm x 12 1 cm TV only 82 0 cm x 60 2 cm x 26 9 cm Included stand 82 0 cm x 55 1 cm x 12 7 cm TV only Mass 14 9 kg Included stand 12 3 kg TV only 18 8 kg Included stand 15 4 kg TV only Power Input AC110V AC240 V 50 Hz 60 Hz Power Consumption 158 W Standby
14. No YA369 1 11 3 2 MEMORY IC REPLACEMENT This model uses the memory IC This memory IC stores data for proper operation of the video and drive circuits When replacing be sure to use an IC containing this initial value data 3 2 1 MEMORY IC REPLACEMENT PROCEDURE 1 Power off Switch off the power and disconnect the power plug from the AC outlet 2 Replace the memory IC Be sure to use the memory IC written with the initial setting values 3 Power on Connect the power plug to the AC outlet and switch on the power 4 Receiving channel setting Refer to the OPERATING INSTRUCTIONS and set the receive channels Channels Preset as described 5 User setting Check the user setting items according to the given in page later Where these do not agree refer to the OPERATING INSTRUCTIONS and set the items as described 6 SERVICE MODE setting Verify what to set in the SERVICE MODE and set whatever is necessary Fig 1 Refer to the SERVICE ADJUSTMENT for setting 3 2 0 SERVICE MODE SETTING BSERVICE MODE SCREEN BSETTING ITEM NOTE Setting As self check feature is not used in this TV items 2 SELF CHECK cannot be selected screen display only Setting items Settings Item No 1 ADJUST Video system setting 1 Adjust S001 S043 Video system setting 2 Fixed 001 M009 Audio System Setting Fixed A001 A003 SERVICE MODE SCREEN Video system setting 3 Fixed D001 D051 Video system setting 4
15. OR THE LCD PANEL When transporting the LCD panel of the unit use a special packing case packing materials A special packing case is used when a LCD panel is supplied as a service spare part 2 ATTACH PROTECTION SHEET TO THE FRONT Since the front display part of the panel is vulnerable attach the protection sheet to the front of the LCD panel before transportation Protection sheet is used when a LCD panel is supplied as a service spare part 3 AVOID VIBRATIONS AND IMPACTS The unit may be broken if it is toppled sideways even when properly packed Continuous vibration may shift the gap of the panel and the unit may not be able to display images properly Ensure that the unit is carried by at least 2 persons and pay careful attention not to exert any vibration or impact on it 4 DO NOT PLACE EQUIPMENT HORIZONTALLY Ensure that it is placed upright and not horizontally during transportation and storage as the LCD panel is very vulnerable to lateral impacts and may break During transportation ensure that the unit is loaded along the traveling direction of the vehicle and avoid stacking them on one another For storage ensure that they are stacked in 2 layers or less even when placed upright 1 6 No YA369 1 4 2 OPTICAL FILTER ON THE FRONT OF THE LCD PANEL 1 Avoid placing the unit under direct sunlight over a prolonged period of time This may cause the optical filter to deteriorate in quality and COLOUR 2 Clean the f
16. STMENT PROCEDURE They are fixed values 4 6 1 ADJUSTMENT MODE 4 6 1 1 VIDEO SYSTEM SETTING 1 4 6 1 2 VIDEO SYSTEM SETTING 2 Fixed values Item name Variable range Setting value Item No Item name Variable range Setting value 5 R OF 000 255 127 M001 IMV CON 000 255 105 516 OF 000 255 127 M002 MV SHA 00 63 09 5 B OF 000 255 126 M003 IMV COL 000 255 147 5P R OF 000 255 127 M004 IMV TIN 000 255 051 5P G OF 000 255 127 M005 GAIN 000 255 120 5P B OF 000 255 126 M006 ERRLimit 000 127 022 HD75 R OF 000 255 127 M007 PC R GAIN 000 255 099 HD75 G OF 000 255 127 M008 PC G GAIN 000 255 099 HD75 B OF 000 255 126 M009 PC B GAIN 000 255 101 HD25 R OF 000 255 127 HD25 G OF 000 255 127 HD25 B OF 000 255 126 R DRIVE 000 255 150 G DRIVE 000 255 126 B DRIVE 000 255 117 HD R DR 32 31 00 HD G DR 32 31 00 HD B DR 32 31 00 CL R DR 32 31 01 CL G DR 32 31 01 CL B DR 32 31 08 WM R DR 32 31 00 WM G DR 32 31 7 WM B DR 32 31 16 HD CL R DR 32 31 01 HD CL G DR 32 31 00 HD CL B DR 32 31 00 HD WM R DR 32 31 HD WM G DR 32 31 HD WM B DR 32 31 PC R OF 000 255 PC G OF 000 255 PC B OF 000 255 PC R DR 32 31 PC G DR 32 31 PC B DR 32 31 PC CL R DR 32 31 PC CL G DR 32 31 PC CL B DR 32 31 PC WM R DR 32 31 PC WM G DR 32 31 PC WM B DR 32 31 PC AUTO WB 0 1 4 6 1 3 AUDIO S
17. YSTEM SETTING Fixed values Item name Variable range Setting value S BASS 00 16 8 S TRE 00 16 8 3D LEVEL 00 63 31 4 6 1 4 VIDEO SYSTEM SETTING 3 Fixed values Item name Variable range Setting value S CON 00 63 20 S BRI 00 63 47 S SHA 00 15 0 S COL 00 63 35 S TIN 00 63 32 RGB S COL 000 127 51 S CON 00 63 25 S BRI 00 63 35 5 S SHA 00 63 46 515 COL 00 63 53 5I S TIN 00 63 35 5P S CON 00 63 24 5P S BRI 00 63 35 S SHA 00 63 18 5P S COL 00 63 51 5P S TIN 00 63 35 HD75 S CON 00 63 29 HD75 S BRI 00 63 32 HD75 S SHA 00 63 30 HD75 S COL 00 63 52 HD75 S TIN 00 63 34 HD25 S CON 00 63 29 HD25 S BRI 00 63 32 HD25 S SHA 00 63 30 HD25 S COL 00 63 52 HD25 S TIN 00 63 34 No YA369 1 17 item name Variable range Setting value 4 6 1 6 VIDEO SYSTEM SETTING 5 Fixed values PC S CON 00 63 25 PC S BRI 00 63 35 TXT S CON 000 127 TXT S BRI 000 127 RGB S CON 000 127 RGB 5 BRI 000 127 STD BRI 00 31 STD CON 00 31 STD BRI2 00 31 STD SHA 00 31 STD COL 00 31 STD TIN 00 31 SFT BRI 00 31 SFT CON 00 31 SFT BRI2 00 31 SFT SHA 00 31 SFT COL 00 31 SFT TIN 00 31 BRI BRI1 00 31 BRI CON 00 31 BRI BRI2 00 31 BRI S
18. azard After re assembling the product always perform an isolation check on the exposed metal parts of the cabinet antenna terminals video audio input and output terminals Control knobs metal cabinet screw heads earphone jack control shafts etc to be sure the product is safe to operate without danger of electrical shock a Dielectric Strength Test The isolation between the AC primary circuit and all metal parts exposed to the user particularly any exposed metal part having a return path to the chassis should withstand a voltage of 3000V AC r m s for a period of one second Withstand a voltage of 1100V AC r m s to an appliance rated up to 120V and 3000V AC r m s to an appliance rated 200V or more for a period of one second This method of test requires a test equipment not generally found in the service trade b Leakage Current Check Plug the AC line cord directly into the AC outlet do not use a line isolation transformer during this check Using a Leakage Current Tester measure the leakage current from each exposed metal part of the cabinet particularly any exposed metal part having a return path to the chassis to a known good earth ground water pipe etc Any leakage current must not exceed 0 5mA AC r m s However in tropical area this must not exceed 0 2mA AC r m s Alternate Check Method Plug the AC line cord directly into the AC outlet do not use a line isolation transformer du
19. e 1 3 3 INSTALLATION REQUIREMENTS To ensure safety in an emergency such as an earthquake and to prevent accidents ensure that measures are taken to prevent the TV dropping or falling over It fixes in a band TV Stand Diagram differs from actual appearance 1 3 4 NOTES ON HANDLING 1 WHEN TAKING UNIT OUT OF A PACKING CASE When taking the unit out of a packing case do not grasp the upper part of the unit If you take the unit out while grasping the upper part the LCD PANEL may be damaged because of a pressure Instead of grasping the upper part put your hands on the lower backside or sides of the unit 2 AS FOR PRESSING OR TOUCHING A SPEAKER Be careful not to press the opening of the speaker in the lower part of the unit and around them since the decorative sheet on the surface of the openings may be deformed No YA369 1 5 1 4 HANDLING LCD PANEL 1 4 4 PRECAUTIONS FOR TRANSPORTATION When transporting the unit pressure exerted on the internal LCD panel due to improper handling such as tossing and dropping may cause damages even when the unit is carefully packed To prevent accidents from occurring during transportation pay careful attention before delivery such as through explaining the handling instructions to transporters Ensure that the following requirements are met during transportation as the LCD panel of this unit is made of glass and therefore fragile 1 USE A SPECIAL PACKING CASE F
20. e SERVICE MODE SCREEN 4 5 5 2 DESCRIPTION OF STATUS DISPLAY SETTINGITEM No SETTING ITEM SETTING VALUE DATA SIGNAL SYSTEM ZOOM MODE PICTURE MODE 1 SIGNAL SYSTEM The signal displayed on the screen is displayed COLOUR TEMP PAL50 PAL50Hz Composite S video PAL60 PAL60Hz Composite S video SECAM SECAM NTSC3 NTSC3 58 NTSC4 5 4 43 525l 525i Component 525P 525p 625l 625i Component 625P 625p 750P6 750p 60Hz PCVGA VGA PCXGA PC XGA 2 ZOOM MODE State of the screen mode is displayed NOTE In ADJUSTMENT MODE the screen mode can be set only to FULL When it is entered to ADJUSTMENT MODE it is automatically changed to FULL even if the setting is in other screen mode 3 PICTURE MODE State of the picture mode is displayed NOTE In ADJUSTMENT MODE the picture mode can be set only to STANDARD When it is entered to ADJUSTMENT MODE it is automatically changed to STANDARD even if the setting is in other picture mode 1 16 No YA369 4 WHITE BALANCE State of the colour temperature is displayed NOTE In ADJUSTMENT MODE the colour temperature can be set only to NORMAL When it is entered to ADJUSTMENT MODE it is automatically changed to NORMAL even if the setting is in other colour temperature 5 SETTING ITEM NAME Setting item name are displayed The setting item numbers to be displayed are listed below Item No 5001 50
21. eads A B b s After removing the part remove remaining solder from the pattern 1 14 No YA369 SECTION 4 ADJUSTMENT 4 1 ADJUSTMENT PREPARATION 1 The adjustment using the REMOTE CONTROL UNIT is made on the basis of the initial setting values The setting values which adjust the screen to the optimum condition can be different from the initial setting values 2 Make sure that connection is correctly made AC to AC power source 3 Tum on the power of the TV and measuring instruments for warming up for at least 30 minutes before starting adjustments 4 If the receive or input signal is not specified use the most appropriate signal for adjustment 5 Never touch the parts such as variable resistors transformers and condensers not shown in the adjustment items of this service adjustment 4 5 BASIC OPERATION OF SERVICE MODE 4 5 1 HOW TO ENTER THE SERVICE MODE 1 Press INFORMATION key and MUTING key on the remote control unit simultaneously to enter the SERVICE MODE SCREEN Fig 1 SERVICE MODE SCREEN SERVICE MENU 1 ADJUST 2 5 CHECK 3 12C STOP 4 Not used Display only Fig 1 NOTE self check feature is not used in this TV 2 SELF CHECK cannot be selected screen display only Before entering the SERVICE MODE confirm that the setting of VCR TV DVD switch is at the TV side If the switches have not been properly se
22. etc Replacement parts which have these special safety characteristics are identified in the parts list of Service manual Electrical components having such features are identified by shading on the schematics and by on the parts list in Service manual The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the parts list of Service manual may cause shock fire or other hazards 4 Don t short between the LIVE side ground and ISOLATED NEUTRAL side ground or EARTH side ground when repairing Some model s power circuit is partly different in the GND The difference of the GND is shown by the LIVE 1 side GND the ISOLATED NEUTRAL side GND and EARTH 8 side GND Don t short between the LIVE side GND and ISOLATED NEUTRAL side GND or EARTH side GND and never measure the LIVE side GND and ISOLATED NEUTRAL side GND or EARTH side GND at the same time with a measuring apparatus oscilloscope etc If above note will not be kept a fuse or any parts will be broken 5 When service is required observe the original lead dress Extra precaution should be given to assure correct lead dress in the high voltage circuit area Where a short circuit has occurred those components that indicate evidence of overheating should be replaced Always the manufacturer s replacement components 6 Isolation Check Safety for Electrical Shock H
23. ilter surface by wiping it softly and lightly with a soft and lightly fuzz cloth such as outing flannel 3 Do not use solvents such as benzene or thinner to wipe the filter surface This may cause the filter to deteriorate in quality or the coating on the surface to come off When cleaning the filter usually use the neutral detergent diluted with water When cleaning the dirty filter use water diluted ethanol 4 Since the filter surface is fragile do not scratch or hit it with hard materials Be careful enough not to touch the front surface especially when taking the unit out of the packing case or during transportation 1 4 3 PRECAUTIONS FOR REPLACEMENT OF EXTERIOR PARTS Take note of the following when replacing exterior parts REAR COVER FRONT PANEL etc 1 Do not exert pressure on the front of the LCD panel filter surface It may cause irregular COLOUR 2 Pay careful attention not to scratch or stain the front of the LCD panel filter surface with hands 3 When replacing exterior parts the front LCD panel should be placed facing downward Place a mat etc underneath to avoid causing scratches to the front filter surface SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2 1 FEATURES T V LINK When you have a T V LINK compatible VCR connected to the EXT 2 Terminal on the is easier to set up the VCR and to view videos ZOOM This function can change the screen size according to the picture aspect ratio DIG
24. n alterations or additions will void the manufacturer s warranty and will further relieve the manufacturer of responsibility for personal injury or property damage resulting therefrom 3 Many electrical and mechanical parts in the product have special safety related characteristics These characteristics are often not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement components rated for higher voltage wattage etc Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual Electrical components having such features are identified by shading on the schematics and by A on the Parts List the Service Manual The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may cause shock fire or other hazards 4 The leads in the products are routed and dressed with ties clamps tubing s barriers and the like to be separated from live parts high temperature parts moving parts and or sharp edges for the prevention of electric shock and fire hazard When service is required the original lead routing and dress should be observed and it should be confirmed that they have been returned to normal after re assembling WARNING 1 The equipment has been designed and manufactured to meet international safety standards 2 I
25. normally black mode where light does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals 2 5 1 1 SPECIFICATIONS The following table shows the specifications of this unit Specifications Item 26V TYPE LCD PANEL UNIT 32V TYPE LCD PANEL UNIT QLD0370 002 JUK QLD0408 001 JUK QLD0371 001 JUK QLD0409 001 JUK Maximum dimensions W x H x D 626 mm x 373 mm x 52 mm 626 mm x 373 mm x 47 5 mm 760 mm x 450 mm x 50 mm 760 mm x 450 mm x 45 mm Weight 4 7 kg 4 2 kg 7 0 kg 7 2 kg Effective screen size Diagonal 660 mm H 576 mm x V 324 mm Diagonal 800 mm H 697 mm x V 392 mm Aspect ratio 16 9 Drive device system a Si TFT active matrix system Resolution Horizontally 1366 x Vertically 768 x RGB W XGA gt 3147264 dots in total Pixel pitch pixel size Horizontally 0 4215 mm Vertically 0 4215mm Horizontally 0 51075 mm Vertically 0 51075mm Displayed colour 16777216 colours 256 colours for R G and B Brightness 500cd m2 Contrast ratio 1000 1 800 1 1000 1 800 1 Response time less than 22 ms less than 35 ms less than 22 ms less than 20 ms View angle Horizontally 178 170 View angle Vertically 178 170 Surface polarizer Anti Glare type Low reflective coat Colour filter Vertical stripe Backlight U type Cold cathode fluorescent lamp x 8 Direct type Cold cathode fluorescent lamp x16 Powe
26. r supply voltage LCD 6 5 V 5V 6 5 V 5V Power supply voltage in inverter 24 V Panel interface system LVDS Low Voltage Differential Signaling 2 5 1 2 PIXEL FAULT There are three pixel faults bright fault dark fault and flicker fault that are respectively defined as follows B BRIGHT FAULT In this pixel fault a cell that should not light originally is lighting on and off For checking this pixel fault input ALL BLACK SCREEN and find out the cell that is lighting on and off B DARK FAULT In this pixel fault a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting For checking this pixel fault input 10096 of each R G B colour and find out the cell that is not lighting B FLICKER FAULT In the pixel fault a cell that should light originally or not light originally is flashing on and off For checking this pixel fault input ALL BLACK SCREEN signal or 100 of each RGB colour and find out the cell that is flashing on and off 1 8 No YA369 2 5 2 MAIN CPU PIN FUNCTION 0302 MAIN PWB Pin name Function Pin name Function D1 Program ROM data for CPU NC2 Not used D4 Program ROM data for CPU XTAL2 6MHz for system clock D2 Program ROM data for CPU XTAL1 6MHz for system clock D3 Program ROM data for CPU NC3 Not used XROM This pin must be pulled low to access external ROM
27. ram ROM address for CPU P3 2 TV Link in Program ROM address for CPU P3 3 Remote control Program ROM address for CPU P3 4 12 bus Data for EEPROM Program ROM address for CPU P3 5 12 bus Clock for EEPROM Program ROM address for CPU P3 6 Data Write for Scaler IC Address Latch Enable P3 7 Comunication for adjustment H RXD Program Store Enable VSS GND Program ROM address for CPU VDD 3 3 3 3V O O O O O O OO O O Program ROM address for CPU P1 0 RGB Select L SCART1 H SCART2 GND P1 1 Headphone Ident L Detect 3 3V P1 2 I2C bus Data for inter IC Program ROM address for CPU P1 3 I2C bus Clock for inter IC O O Program ROM address for CPU P1 4 Reset for inter IC L Reset Test purpose P1 5 PC Detect L Detect Program ROM data for CPU P1 6 Memory Pack I2C S W L Detect Program ROM address for CPU P4 2 Main power control L ON H OFF Program ROM data for CPU P4 3 TV Link out Program ROM data for CPU RST Reset L Reset Program ROM data for CPU No YA369 1 9 SECTION 3 DISASSEMBLY 3 4 DISASSEMBLY PROCEDURE CAUTION AT DISASSEMBLY Make sure that the power cord is disconnected from the outlet Pay special attention not to break or damage the parts When removing each board remove the connectors as
28. ring this check Use an AC voltmeter having 10000 per volt or more sensitivity in the following manner Connect a 15000 10W resistor paralleled by a 0 15uF AC type capacitor between an exposed metal part and a known good earth ground water pipe etc Measure the AC voltage across the resistor with the AC voltmeter Move the resistor connection to each exposed metal part particularly any exposed metal part having a return path to the chassis and measure the AC voltage across the resistor Now reverse the plug in the AC outlet and repeat each measurement Any voltage measured must not exceed 0 75V AC r m s This corresponds to 0 5mA AC 5 However in tropical area this must not exceed 0 3V AC r m s This corresponds to 0 2mA AC r m s AC VOLTMETER HAVING 10002 V OR MORE SENSITIVITY 0 15uF E 15000 10W PLACE THIS PROBE gt ON EACH EXPOSED METAL PART GOOD EARTH GROUND No YA369 1 3 1 2 SAFETY PRECAUTIONS FOR UK 1 The design of this product contains special hardware and many circuits and components specially for safety purposes For continued protection no changes should be made to the original design unless authorized in writing by the manufacturer Replacement parts must be identical to those used in the original circuits Service should be performed by qualified personnel only 2 Alterations of the design or circuitry of the product should not be made Any desig
29. s not describe TROUBLESHOOTING No YA369 1 19 Victor Company of Japan Limited Flat Panel Display Category 12 3 chome Moriya cho Kanagawa ku Yokohama city Kanagawa prefecture 221 8528 Japan No YA369 Printed in Japan VPT
30. t you cannot enter the SERVICE MODE 4 5 2 HOW TO EXIT THE SERVICE MODE Press the MENU key to exit the Service mode 42 PRESET SETTING BEFORE ADJUSTMENTS Unless otherwise specified in the adjustment items preset the following functions with the REMOTE CONTROL UNIT Setting item Settings position PICTURE MODE STANDARD PICTURE adjustments Centre COLOUR TEMP NORMAL 4 3 MEASURING INSTRUMENT AND FIXTURES Signal generator Pattern generator PAL Remote control unit 44 ADJUSTMENT ITEMS 4 5 3 CHANGE AND MEMORY OF SETTING VALUE SELECTION OF SETTING ITEM FUNCTION key For scrolling up down the setting items CHANGE OF SETTING VALUE DATA FUNCTION lt gt key For scrolling up down the setting values MEMORY OF SETTING VALUE DATA Changed setting value is memorized by pressing MUTING key 4 5 4 SERVICE MODE SELECT KEY LOCATION MUTING NUMBER vCRITVIDVD switch MENU 3 SR FUNCTION No YA369 1 15 4 5 5 ADJUSTMENT MODE This mode is used to adjust the VIDEO CIRCUIT 4 5 5 1 HOW TO ENTER THE ADJUSTMENT MODE When the SERVICE MENU SCREEN of SERVICE MODE is displayed press 1 key to enter the ADJUSTMENT MODE Fig 2 NOTE When a number key other than the 1 key is pressed in the SERVICE MODE SCREEN the other relevant screen may be displayed This is not used in the adjustment procedure Press the MENU key to return to th
31. t is the legal responsibility of the repairer to ensure that these safety standards are maintained 3 Repairs must be made in accordance with the relevant safety standards 4 It is essential that safety critical components are replaced by approved parts 5 If mains voltage selector is provided check setting for local voltage 2 1 4 No YA369 1 3 INSTALLATION 1 3 1 HEAT DISSIPATION If the heat dissipation vent behind this unit is blocked cooling efficiency may deteriorate and temperature inside the unit will rise The temperature sensor that protects the unit will be activated when internal temperature exceeds the pre determined level and power will be turned off automatically Therefore please make sure pay attention not to block the heat dissipation vent as well as the ventilation outlet behind the unit and ensure that there is room for ventilation around it Ventilation hole Ventilation hole Diagram differs from actual appearance 1 3 2 INSTALLATION REQUIREMENTS Ensure that the minimal distance is maintained as specified below between the unit with and the surrounding walls as well as the floor etc Install the unit on stable flooring or stands Take precautionary measures to prevent the unit from tipping in order to protect against accidents and earthquakes Diagram differs from actual appearanc
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