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JVC pd-42dxt Service Manual

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SERVICE MANUAL
2003
01
52108
TS-42DXT
[FRONT SPEAKER (L)]
[RM-C289]
TU-42DXT
[RECEIVER UNIT]
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
4
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-52
PDP COLOR TELEVISION
PD-42DXT
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
TS-42DXT
[FRONT SPEAKER (R)]
TS-42DXT
PD-42DXT
[SUB WOOFER]
[PLASMA DISPLAY UNIT]
PD-42DXT
BASIC CHASSIS
SB3
No.52108
2003/01

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Summary of Contents for JVC pd-42dxt

  • Page 1 PD-42DXT SERVICE MANUAL PDP COLOR TELEVISION 52108 2003 PD-42DXT BASIC CHASSIS TS-42DXT TS-42DXT [FRONT SPEAKER (L)] [FRONT SPEAKER (R)] [RM-C289] TS-42DXT PD-42DXT [SUB WOOFER] [PLASMA DISPLAY UNIT] TU-42DXT [RECEIVER UNIT] TABLE OF CONTENTS PRECAUTIONS ............... 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 PD-42DXT SPECIFICATION Item Contents Dimensions (W x H x D) Plasma display unit 103.5cm x 64.0cm x 9.8cm (without Front speaker) 112.3cm x 64.0cm x 10cm (with Front speaker) Receiver unit 43.5cm x 9.9cm x 38.2cm Front speaker 4.2cm x 63.9cm x 5.4cm Sub woofer 3.5cm x 23.0cm x 12.6cm...

  • Page 3: Precautions

    PD-42DXT SECTION 1 PRECAUTIONS 1.1 SAFETY PRECAUTIONS and connecting the other end of the lead through a 10k 2W resistor to the anode button. (1) The design of this product contains special hardware, (8) When service is required, observe the original lead dress.
  • Page 4 PD-42DXT 1.2 INSTALLATION 1.2.1 HEAT DISSIPATION 1.2.2 INSTALLATION REQUIREMENTS If the heat dissipation vent behind this unit is blocked, cooling Ensure that the minimal distance is maintained, as specified efficiency may deteriorate and temperature inside the unit will below, between the unit with and the surrounding walls, as well rise.
  • Page 5 PD-42DXT 1.3 PRECAUTIONS DURING NOTES FOR TRANSPORTATION 1.6 OPTICAL FILTER (PANEL FILTER) When transporting the display unit, pressure exerted on the Avoid placing the unit under direct sunlight over a prolonged internal PDP (Plasma Display Panel) due to improper handling period of time.

  • Page 6: Specific Service Instructions

    PD-42DXT SECTION 2 SPECIFIC SERVICE INSTRUCTIONS 2.1 FEATURES 2.1.1 HIGH-DEFINITION IMAGE TECHNOLOGY (DET), HIGH QUALITY SOUND TECHNOLOGY (DD) EQUIPPED DET (Digital Emotional Tech- Picture processing technology that changes various kinds of image signal, ranging from ground- nology) based broadcast to D4 format of the digital satellite broadcast, to XGA high vision picture quality, thereby accomplishing detailed high density images.
  • Page 7 PD-42DXT 2.2 TECHNICAL INFORMATION 2.2.1 PDP STRUCTURE AND CHARACTERISTIC This unit (Display Unit) uses the flat type panel PDP (Plasma Display Panel), instead of the conventional CRT (Cathode Ray Tube), as a display unit. 2.2.2 PIXEL (CELL) ARRAY PDP is constructed by sealing the xenon, which emits neon and ultraviolet rays for discharging purpose, in between the electrodes lay on the front glass substrate and rear glass substrate.
  • Page 8 PD-42DXT 2.3 MAIN MI-COM FUNCTIONAL TABLE [RECEIVER UNIT] Pin No. Terminal name Port name Function BS-RxD SBO0 PDP communication port /MICON_V /VSYNC Vertical synchronizing signal input (For OSD) LB_PRO Low B protection detect (In detection: H) Not used /RST /RST Reset jack (In resetting: L) CONV.BUSY...
  • Page 9 PD-42DXT Pin No. Terminal name Port name Function PDP-Tx P25 SBD1 PDP communication SBT1 SBT1 Port for writing on board AP_DATA Auto panorama data input BS-RESET Not used Not used BS1.5CTL Not used /DVI_RST PWM2 Not used DVI_HP PWM1 Connection detect (digital signal)
  • Page 10 PD-42DXT 2.4 DISASSEMBLY PROCEDURE [DISPLAY UNIT] Caution: 2.4.3 REMOVING THE LINE FILTER PWB (Fig.3) • When exchanging parts etc. with the front side (PDP side) • Remove the REAR COVER. facing down, please place a protection sheet below before • Remove the TERMINAL COVER.
  • Page 11 PD-42DXT 2.4.9 REMOVING THE PDP UNIT (Fig.5) • Remove the REAR COVER. DISPLAY INTERFACE PWB • Remove the TERMINAL COVER. • Remove the CHASSIS BASE (with each PWB affixed on the FILTER SHIELD (x6) (x4) CHASSIS BASE). (1) Remove the 4 screws [M], and remove the terminal brack-...
  • Page 12 PD-42DXT (x4) TERMINAL BRACKET SUPPORT BRACKET (x3) (BOTTOM) (x2) SUPPORT BRACKET (TOP) (x2) (x2) (x2) BACK FRAME (BOTTOM) SUPPORT BRACKET (x2) (BOTTOM) (x2) BACK FRAME (BOTTOM) (x2) (x2) (x2) PANEL SHIELD (x4) PDP UNIT insertion hole INNER CASE FRONT PANEL FRONT FILTER Fig.5...
  • Page 13 PD-42DXT 2.4.10 REMOVING THE INNER CASE (Fig.6) 2.4.11 REMOVING THE DISPLAY LED PWB (Fig.6) • Remove the REAR COVER. • Remove the INNER CASE. • Remove the TERMINAL COVER. (1) Remove the 2 screws [X], and remove the DISPLAY LED •...

  • Page 14: Video

    PD-42DXT 2.5 DISASSEMBLY PROCEDURE [RECEIVER UNIT] 2.5.1 REMOVING THE TOP COVER 2.5.7 REMOVING THE RECEIVER POWER PWB AND MAIN (1) Remove the 4 screws [A] on the both left and right sides. (2) Remove the 3 screws [B] on the rear side.
  • Page 15 PD-42DXT (x4) TOP COVER (x3) (x2) (x2) BS HOLDER (x2) DET RELAY PWB CHASSIS BRACKET MI-COM & DET MODULE PWB SD CARD PWB (x2) (x5) (x6) RECEIVER POWER PWB CONNECTOR SUB TUNER PWB MAIN PWB COOLING FAN FRONT PANEL BRACKET...
  • Page 16 PD-42DXT 2.6 REPLACEMENT OF MEMORY IC This unit uses the nonvolatile memory IC. The memory IC memories data for video and deflection circuits. To replace the memory IC without the data written, malfunctions might occurred while power is on, and the normal image might not appear. When replacing the memory IC, be sure to use the IC written with the initial values of data.
  • Page 17 PD-42DXT 2.6.2 SETTINGS OF THE LAST MEMOLY FACTORY SHIPMENT 2.6.2.1 MAIN SIDE OPERATION (RECEIVER UNIT) Switch Setting position 入力切換ボタン テレビ チャンネルボタン 音量ボタン 適切な音量位置 画面サイズボタン ノーマル 2.6.2.2 REMOTE CONTROL SIDE OPERATION (LAST MEMORY) Setting items Settings Setting items Settings 入力切換 テレビ...
  • Page 18 PD-42DXT (2) AUDIO ADJUSTMENT Setting items Settings 高音 低音 入り ステレオサウンド 切り モノラルサウンド 切り 重低音 標準 左右バランス (3) VARIOUS SETUP Setting items Settings 画面サイズ ノーマル 映像選択 スタンダード サウンドモード スタンダード 画面位置の調整 センター位置 デジタル E.E. 入り Do not display デジタル E.E.. の効果表示...
  • Page 19 PD-42DXT 2.7 REPLACEMENT OF CHIP COMPONENT 2.7.1 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.

  • Page 20: Adjustments

    PD-42DXT SECTION 3 ADJUSTMENTS 3.1 ADJUSTMENT PREPARATION 3.2 MEASURING INSTRUMENT AND FIXTURES (1) Adjustment of many Majority of the adjustment items for • DC voltmeter (or Digital voltmeter) this unit is performed using the remote control. • Oscilloscope (2) However, adjustment of some adjustment items is are •...
  • Page 21 PD-42DXT 3.4 MAIN PARTS LOCATIONS (DISPLAY UNIT) (No.52108)1-21...
  • Page 22 PD-42DXT 3.5 SERVICE MENU SCREEN The following items are basically adjustment items. The following items are basically adjustment items. However, do not make adjustments if the range item is However, do not make adjustments if the range item is not specified in the "ADJUSTMENT PROCEDURE" section.
  • Page 23 PD-42DXT 3.6 BASIC OPERATION OF THE SERVICE MENU MODE [USING REMOTE CONTROL] 3.6.1 HOW TO ENTER THE SERVICE MENU MODE NOTE: MAIN MENU MAIN MENU Ensure that the cursor (arrow) of the User Menu screen is pointing at Picture Control.
  • Page 24 PD-42DXT 3.6.4 SETTINGS OF THE SERVICE MENUS 3.6.4.1 [1. PICTURE/SOUND (Picture/sound setting)] Adjusts output data to ports such as sound, deflection, signal and (2) Screen Size (8) I-P interpolation MODE others (Item F): (1) SIGNAL TYPE (1) Signal Type (3) Picture Selection (7) Data Saving Method The signal currently displayed on the screen is displayed.
  • Page 25 PD-42DXT 3.7 DEFAULT VALUES IN THE SERVICEMAN PERSONNEL SETTING MODE • Perform fine-tuning based on the "default values" using the remote control when in the Service Personnelman Setting mode. • The "default 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.
  • Page 26 PD-42DXT Setting value Item Item Variable range NTSC 525i 525p 750p/1125i スタンダード シアター スタンダード シアター スタンダード シアター スタンダード シアター BYGN 000~255 OF BYGN -127~128 (---) (---) (---) (---) (---) (---) (---) (---) -127~128 +006 +006 +006 RYAXIS 000~003 Setting value...
  • Page 27 PD-42DXT Setting value Item Item Variable range NTSC 525i 525p 750p/1125i スタンダード シアター スタンダード シアター スタンダード シアター スタンダード シアター BTHN 000~001 BCALM 000~001 BKAKOU 000~031 BLIM 000~063 BSTPO 000~063 BKAKON 000~001 WTHN 000~001 WCALM 000~001 WKAKOU 000~031 WLIM 000~255 WSTPO...
  • Page 28 PD-42DXT Setting value Item Item Variable range NTSC 525i/525p 750p/1125i スタンダード シアター スタンダード シアター スタンダード シアター PLPOL2 000~001 PLEV2 000~127 PLPOL1 000~001 PLEV1 000~127 Setting value NTSC Item Item Variable range 525i/525p 750p/1125i OTHERS 2 画面 スタンダード シアター スタンダード シアター スタンダード シアター スタンダード シアター...
  • Page 29 PD-42DXT Setting value Item Item Variable range ダイナミック スタンダード / ゲーム シアター 001~003 Setting value Item Item Variable range NTSC 525i 525p 750p/1125i スタンダード シアター スタンダード シアター スタンダード シアター スタンダード シアター APLGAIN 001~007 APLLIM 001~255 ABSGAIN 001~127 BLKGAIN 001~007 BLKLIM...
  • Page 30 PD-42DXT Item Item Variable range Setting value (NO DISPLAY) 000~001 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~001 (NO DISPLAY) 000~001 (NO DISPLAY) 000~001 (NO DISPLAY) 000~001 (NO DISPLAY) 000~001...
  • Page 31 PD-42DXT Item Item Variable range Setting value (NO DISPLAY) 000~001 (NO DISPLAY) 000~007 OUT LV. 000~255 LMT BTM 000~255 LMT TOP 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~255 (NO DISPLAY) 000~001 (NOT USED) (NO DISPLAY)
  • Page 32 PD-42DXT 3.7.2 [2.YC SEP] NOTE： Setting Item No. Item Variable range • For reference, initial values in the following conditions are value written here YCM039 (NO DISPLAY) 000~127 Input signal : NTSC Screen size : フルモード YCM040 (NO DISPLAY) 000~003...
  • Page 33 PD-42DXT Setting Setting Item No. Item Variable range Item No. Item Variable range value value YCM083 (NO DISPLAY) 000~001 YCM128 (NO DISPLAY) 000~001 YCM084 (NO DISPLAY) 000~063 YCM129 (NO DISPLAY) 000~001 YCM085 (NO DISPLAY) 000~001 YCM130 (NO DISPLAY) 000~003 YCM086...
  • Page 34 PD-42DXT Setting Setting Item No. Item Variable range Item No. Item Variable range value value YCM173 (NO DISPLAY) 000~007 YCS031 (NO DISPLAY) 000~001 YCM174 (NO DISPLAY) 000~255 YCS032 (NO DISPLAY) 000~003 YCM175 (NO DISPLAY) 000~001 YCS033 (NO DISPLAY) 000~001 YCM176...
  • Page 35 PD-42DXT 3.7.3 [3.WHITE BALANCE] Setting Item No. Item Variable range value NOTE： • For reference, initial values in the following conditions are YCS076 (NO DISPLAY) 000~001 written here YCS077 (NO DISPLAY) 000~001 Input signal : NTSC Screen size : フルモード...
  • Page 36 PD-42DXT Setting Setting Item No. Item Variable range Item No. Item Variable range value value DDT30 (NO DISPLAY) 000~001 CMT039 (NO DISPLAY) 000~255 DDT31 (NO DISPLAY) 000~007 CMT040 (NO DISPLAY) -128~+127 DDT32 (NO DISPLAY) 000~255 CMT041 (NO DISPLAY) -128~+127 +010...
  • Page 37 PD-42DXT 3.7.6 [8.PP] Setting Item No. Item Variable range value NOTE： • For reference, initial values in the following conditions are DDP25 (NO DISPLAY) 000~015 written here DDP26 (NO DISPLAY) 000~015 Input signal : NTSC Screen size : フルモード DDP27...
  • Page 38 PD-42DXT Setting Setting Item No. Item Variable range Item No. Item Variable range value value PPB036 (NO DISPLAY) 000~255 PPA001 (NO DISPLAY) 000~255 PPA002 (NO DISPLAY) 000~255 Setting Item No. Item Variable range PPA003 (NO DISPLAY) 000~255 value PPA004 (NO DISPLAY)
  • Page 39 PD-42DXT 3.7.7 [9.IP] (*All the values are fixed values.) Setting Item No. Item Variable range value NOTE： • For reference, initial values in the following conditions are IPA039 (NO DISPLAY) 000~003 written here IPA040 (NO DISPLAY) 000~003 Input signal : NTSC Screen size : フルモード...
  • Page 40 PD-42DXT Setting Setting Item No. Item Variable range Item No. Item Variable range value value IPA084 (NO DISPLAY) 000~001 IPB007 (NO DISPLAY) 000~015 IPA085 (NO DISPLAY) 000~001 IPB008 (NO DISPLAY) 000~255 IPA086 (NO DISPLAY) 000~001 IPB009 (NO DISPLAY) 000~015 IPA087...
  • Page 41 PD-42DXT Setting Setting Item No. Item Variable range Item No. Item Variable range value value IPB052 (NO DISPLAY) 000~255 IPC016 (NO DISPLAY) 000~255 IPB053 (NO DISPLAY) 000~015 IPC017 (NO DISPLAY) 000~001 IPB054 (NO DISPLAY) 000~255 IPC018 (NO DISPLAY) 000~127 IPB055...
  • Page 42 PD-42DXT Setting Item No. Item Variable range value IPD015 (NO DISPLAY) 000~001 IPD016 (NO DISPLAY) 000~001 IPD017 (NO DISPLAY) 000~255 IPD018 (NO DISPLAY) 000~007 IPD019 (NO DISPLAY) 000~255 IPD020 (NO DISPLAY) 000~007 IPD021 (NO DISPLAY) 000~255 IPD022 (NO DISPLAY) 000~001...
  • Page 43 PD-42DXT 3.8 ADJUSTMENT PROCEDURE 3.8.1 DISPLAY UNIT Mesuring Item Test point Adjustment part Description instrument PDP POWER DC voltmeter CONNECTOR R628:170V ADJ <When PDP POWER PWB is not Replaced> SUPPLY CN0C4 (Vs VR) VOLTAGE Signal generator [PDP POWER R721: 60V ADJ (1) Connect the load resistor (5Ω/5W) to the CN0C4...
  • Page 44 PD-42DXT 3.8.2 RECEIVER UNIT Mesuring Item Test point Adjustment part Description instrument BLACK Remote control [8.PP] (1) Input NTSC signal that shows brightness radation LEVEL unit ADM013: (NO DISPLAY) portion with 0% black. (G OFFSET) (2) Set " 映像選択 " to スタンダード .
  • Page 45 PD-42DXT Mesuring Item Test point Adjustment part Description instrument Remote control [8.PP] (1) Input NTSC all-white signal. CONVERTER unit ADM010: (NO DISPLAY) (2) Set " 映像選択 " to スタンダード . GAIN (G GAIN) (3) Set " 画面サイズ " to フルモード .
  • Page 46 PD-42DXT Mesuring Item Test point Adjustment part Description instrument Remote control [8.PP] (1) Input NTSC component 30% all-white signal. CONVERTER unit ADM012: (NO DISPLAY) (2) Set " 映像選択 " to スタンダード . OFFSET (R OFFSET) (3) Set " 画面サイズ " to フルモード .
  • Page 47 PD-42DXT Mesuring Item Test point Adjustment part Description instrument NTSC Remote control [2. YC SEP] (1) Input NTSC all-black signal. BRIGHTNESS unit YCM131: (NO DISPLAY) (2) Set " 映像選択 " to スタンダード . (BRIGHTNESS) (3) Set " 画面サイズ " to フルモード .
  • Page 48 PD-42DXT Mesuring Item Test point Adjustment part Description instrument NTSC Remote control [2. YC SEP] (1) Input NTSC all-white signal. CONTRAST unit YCM132: (NO DISPLAY) (2) Set " 映像選択 " to スタンダード . (CONTRAST) (3) Set " 画面サイズ " to フルモード .
  • Page 49 PD-42DXT Mesuring Item Test point Adjustment part Description instrument SUB-SCREEN Remote control [8. PP] (1) Set " 映像選択 " to スタンダード . BLACK unit ADM013: (NO DISPLAY) (2) Set " 画面サイズ " to フルモード . LEVEL (G OFFSET) (3) Select " 映像調節 " and set white balance to " 低い色...
  • Page 50 PD-42DXT Mesuring Item Test point Adjustment part Description instrument SUB-SCREEN Remote control [8. PP] (1) Set " 映像選択 " to スタンダード . unit ADM012: (NO DISPLAY) (2) Set " 画面サイズ " to フルモード . CONVERTER (G GAIN) (3) Select " 映像調節 " and set white balance to " 低い色...
  • Page 51 PD-42DXT Mesuring Item Test point Adjustment part Description instrument WHITE Remote control [1. PICTURE/SOUND] (1) Input NTSC 75% all-white signal. BALANCE unit S13: RDRV (2) Set " 映像選択 " to スタンダード . (HIGHLIGHT) (R DRIVE) (3) Set " 画面サイズ " to フルモード .

  • Page 52: Trouble Shooting

    PD-42DXT SECTION 4 TROUBLE SHOOTING 4.1 SELF-DIAGNOSIS FEATURE 4.1.1 OUTLINE Service Menu Screen Service Menu Screen This unit comes with the "Self-diagnosis" feature, which checks the operational state of the circuit and displays/saves it during failure. Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time.
  • Page 53 PD-42DXT 4.1.5 POINTS TO NOTE WHEN USING THE SELF-DIAGNOSIS FEATURE In addition to circuit failures (abnormal operation), the following cases may also be iagnosed as "Abnormal" and displayed and counted as "NG". (1) Temporary defective transmissions across circuits due to pulse interruptions (2) Misalignment in the on/off timing of power for I C bus (VCC) when turning on/off the main power.
  • Page 54 PD-42DXT • PAGE 2 Diagnosis Item Display Description of detection Means of detection Unit signal (line) PANEL Is temperature of thermostat in Detection starts 5 seconds upon Display TEMPERATURE PDP proper? power on Performs detection every 16ms and turns off power if NG lasts...
  • Page 55 PD-42DXT (No.52108)1-55...
  • Page 56 PD-42DXT VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY DISPLAY CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.52108) Printed in Japan 200301WPC...