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NEC PlasmaSync PX-42VM1G Service Manual

Multimedia monitor
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PlasmaSync™ Multimedia Monitor
SERVICE MANUAL
Better Service
Better Reputation
Better Profit
Tentaive issue
SAFETY CAUTION:
Before servicing this chassis, it is important that the service
technician read and follow the "Safety Precautions" and "Product
Safety Notice" in this Service Manual.
WARNING:
SHOCK HAZARD - Use an isolation transformer when servicing.
MODEL PX-42VM1A
PX-42VM1G
No. 002A

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  • Page 1 MODEL PX-42VM1A PX-42VM1G PlasmaSync™ Multimedia Monitor SERVICE MANUAL No. 002A Better Service Better Reputation Better Profit Tentaive issue SAFETY CAUTION: Before servicing this chassis, it is important that the service technician read and follow the “Safety Precautions” and “Product Safety Notice” in this Service Manual. WARNING: SHOCK HAZARD - Use an isolation transformer when servicing.

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS ..........................2-1 USERS MANUAL ............................... 3-1 TROUBLE SHOOTING ............................4-1 METHOD OF ADJUSTMENTS .......................... 5-1 CIRCUIT DESCRIPTION ........................... 6-1 METHOD OF DISASSEMBLY ........................... 7-1 DISASSEMBLY ..............................8-1 PACKAGING ..............................9-1 REPLACEMENT PARTS LIST ......................... 10-1 CONNECTION DIAGRAMS ..........................11-1 BLOCK DIAGRAM ............................

  • Page 3: Safety Precautions

    SAFETY PRECAUTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN REAR COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. This symbol warns the user that unin- This symbol alerts the user that important sulated voltage within the unit may have literature concerning the operation and...
  • Page 4 SAFETY PRECAUTIONS 1. Before returning an instrument to the customer, al- AC Leakage Test ways make a safety check of the entire instrument, in- cluding, but not limited to, the following items. (READING SHOULD NOT BE ABOVE 3.5 mA) a. Be sure that no built-in protective devices are LEAKAGE DEVICE CURRENT...
  • Page 5 SAFETY PRECAUTIONS 5. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts— be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high volt- age, and e.
  • Page 6 PRECAUTIONS DE SECURITE 1. Avant de remettre un appareil à un client, faire courant ne doit dépasser 3.5 milliamp. Inverser la toujours d'abord un examen de sécurité de fiche de courant de l'appareil dans la prise et l'appareil en entier comprenant, mais ne s'y limitant répéter le test.
  • Page 7 PRECAUTIONS DE SECURITE b. Certains châssis de moniteur ont habituellement 6. Les composants, parts (pièces) et/ou fils qui ont été 85V (RMS) entre le châssis et la prise de terre, en trouvés surchauffés devraient être remplacés avec fonction de la polarité de la prise de courant. Ces les composants, pièces et fils s'y reliant avec d'autre châssis peuvent ne comporter aucun risque qui ont les mêmes spécifications que les originales.
  • Page 8 SAFETY PRECAUTIONS 1 . Cautions for disassembly 2. The least minimum caut ions for product disas- (1) For the suspension-type set (No. of workers: 3 sembly to 5 including assistants) • Secure a working space, arranged as wide as pos- •...
  • Page 9 SAFETY PRECAUTIONS (Notes) The component by the name of “module” used in this product is defined as a section that is pro- vided with a digital circuit board (including high- voltage parts) used to emit light in the glass panel part, excluding the surface acrylic fiIter or the tem- pered glass fiIter.

  • Page 10: Users Manual

    PlasmaSync Plasma Monitor User’s Manual NEC Technologies...
  • Page 11 Class A digital device, pursuant to Part 15 of 7. Do not attempt to service or repair the unit. NEC is not the FCC Rules. These limits are designed to provide...
  • Page 12 Set the ferrite cores on the both ends of the DVI cable phosphor burn if proper precautions are not taken. To pro- (not supplied), and the one end of the power cable tect your investment in this NEC plasma monitor, please (supplied). adhere to the following guidelines and recommendations Close the lid tightly until the clamps click.
  • Page 13 Mises en garde et précautions de sécurité Veuillez lire ce manuel avec attention avant d'utiliser votre moniteur PlasmaSync NEC et conserver ce manuel à portée Le moniteur PlasmaSync NEC a été conçu et fabriqué de la main pour une consultation ultérieure.
  • Page 14 Pour Fermez doucement le couvercle jusqu'à ce que les crans protéger votre investissement dans ce moniteur PlasmaSync se clipsent. NEC, veuillez suivre les directives et les recommandations Connecteur Câble DVI (non fourni) suivantes pour minimiser l'occurence de brûlure d'image : •...
  • Page 15 Note: All products returned to NECTECH for service WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR MUST have prior approval. To get approval, call NEC We will pay labor and material expenses for covered items, Technologies at 800-836-0655.
  • Page 16 Contents Sound settings menu ..........23 How to Attach Options to the Plasma Monitor ..1 Adjusting the treble, bass and left/right balance ..23 Introduction ............. 2 Screen Settings Menu ..........24 Introduction to the PlasmaSync 42MP1 Adjusting the Position, Size, Fine Picture, Plasma Monitor ............
  • Page 17 (Wall mount unit, Stand, etc) * See page 2. • For correct installation and mounting it is strongly recommended to use a trained, authorized NEC dealer. Failure to follow correct mounting proce- dures could result in damage to the equip- Drawing B ment or injury to the installer.
  • Page 18 PCs to DVD players- into art. And weighing only User's manual 70.6 lbs/ 32 kg, it actually can be hung almost anywhere. NEC has made sure that a host of multimedia resources Wired Remote cable can be easily connected and displayed as brilliantly as in- Safety metal fitting* tended on the PlasmaSync™...
  • Page 19 Part Names and Function Front View POWER/STANDBY INPUT SELECT VOLUME POWER/STANDBY VOLUME INPUT SELECT PROCEED DOWN LEFT/– RIGHT/+ /EXIT 1 PROCEED 5 POWER/STANDBY indicator Sets the on-screen display (OSM) mode and displays When the power is on ......Lights green. the main menu.
  • Page 20 Rear View/ Terminal Board RGB 3 (Digital RGB) RGB 3 (Digital RGB) RGB 1 RGB 1 SPEAKERS MUST HAVE MORE THAN R/CR/PR 7WATT RATING IMPEDANCE 6 OHM SPEAKERS MUST LEFT HAVE MORE THAN B/CB/PB 7WATT RATING RIGHT IMPEDANCE 6 OHM L(MONO) EXTERNAL CONTROL...
  • Page 21 Remote Controller 2 RGB/PC Press this button to select RGB/PC as the source. → RGB1 → RGB2 → RGB3  RGB/PC can also be selected using the INPUT SELECT button on the monitor. The input switches as follows each time the button is pressed: OFF POWER →...
  • Page 22 C DISPLAY Battery Installation and Replacement Displays the source settings on the screen. Insert the 2 "AAA" batteries, making sure to set them in with the proper polarity. D OFF TIMER 1.Press and open the cover. Activates the off timer for the unit. E Remote Jack Insert the plug of the supplied remote cable when using the supplied remote control unit in the wired condition.
  • Page 23 Using the wired remote control mode Operating Range * Use the remote controller within a distance of about 7 m Connect the included remote control cable to the remote / 23ft. from the front of the monitor's remote control sen- control unit's "REMOTE CONTROL"...
  • Page 24 Installation Personal computer with a digital RGB output Signal cable (supplied) To Mini D-Sub 15 pin connector on the plasma monitor IBM VGA or Compatibles RGB 3 (Digital RGB) RGB 1 Macintosh or Compatibles (Desk top type) Monitor adapter for To video, S-video inputs on Macintosh (supplied) L(MONO)
  • Page 25 Connecting Your PC Or Macintosh Computer Connecting Your Document Camera Connecting your PC or Macintosh computer to your plasma moni- You can connect your plasma monitor to a document camera. To tor will enable you to display your computer's screen image for an do so, simply: impressive presentation.
  • Page 26 External Speaker Connections RGB 3 (Digital RGB) RGB 1 LEFT SPEAKERS MUST HAVE MORE THAN R/CR/PR 7WATT RATING IMPEDANCE 6 OHM LEFT B/CB/PB RIGHT RIGHT L(MONO) EXTERNAL CONTROL VIDEO 1 REMOTE VIDEO 2 CONTROL VIDEO 3 CONTROL LOCK L(MONO) CB/CR AC IN PB/PR L(MONO)
  • Page 27 Pin Assignments and Signal Levels for 15 pin RGB (Analog) 10 9 Pin No. Signal (Analog) 15 14 13 12 11 Green or sync-on-green Blue No connection Ground Red ground Green ground Blue ground No connection Sync signal ground No connection Bi-directional DATA (SDA) Horizontal sync Vertical sync...
  • Page 28 Basic Operations POWER DIGITAL ZOOM To turn the unit ON and OFF: Digital zoom specifies the picture position and enlarges 1. Plug the power cord into an active AC power outlet. the picture. 1. Press the pointer button to display the pointer. ( 2.
  • Page 29 Canceling the off timer OFF TIMER 1. Press the OFF TIMER button twice in a row. To set the off timer: The off timer can be set to turn the power off after 30, 2. The off timer is canceled. 60, 90 or 120 minutes.
  • Page 30 WIDE Operations Watching with a wide screen STADIUM size screen (manual) With this function, you can select one of four screen sizes. When watching videos or digital video discs 1. Press the "WIDE" button on the remote controller. 2. Within 3 seconds ... Press the "WIDE"...
  • Page 31 Watching computer images with a Information wide screen Supported resolution Switch to the wide screen mode to expand the 4 : 3 image • See page 44 for details on the display output of the to fill the entire screen. various VESA signal standards supported by the 1.
  • Page 32 Controls (On Screen Menu) Menu Operations 5. The change is stored until you adjust it again. 6. Repeat steps 2 – 5 to adjust an additional item, or press The OSM window is displayed with respect to the the EXIT button on the remote controller to return to screen as shown on the diagram.
  • Page 33 Main menu Sub menu Functions Default Reset PICTURE CONTRAST Adjusts the contrast. BRIGHTNESS Adjusts the brightness. Center SHARPNESS Adjusts the sharpness. Center COLOR Adjusts the color. Center TINT Adjusts the tint. Center PICTURE MODE Sets the picture mode according to the VIDEO environment and im- MEMORY age software.
  • Page 34 Picture Settings Menu 4. Press the “PROCEED” button. The contrast adjustment is completed. Adjusting the picture The contrast, brightness, sharpness, color and tint can be P I C T U R E adjusted as desired. CONTRAST BRIGHTNESS Example: Adjusting the contrast SHARPNESS COLOR TINT...
  • Page 35 Setting the picture mode according to the bright- 4. Press the “PROCEED” button. ness of the room The picture mode is set to “THEATER”. There are four picture modes that can be used effectively according to the environment in which you are viewing P I C T U R E the display.
  • Page 36 Setting the color temperature 5. Once the setting is completed... Use this procedure to set color tone produced by the plasma Press the “EXIT” button to return to the main menu. display. To delete the main menu, press the “EXIT” button once more.
  • Page 37 Adjusting the color to the desired quality 4. Press the “PROCEED” button. Use this procedure to adjust the white balance for bright pic- The "WHITE BALANCE" screen appears. tures and dark pictures to achieve the desired color quality. 5. Use the buttons to select "RED-GAIN".
  • Page 38 Reducing noise in the picture 4. Press the “PROCEED” button. Use these settings if the picture has noise due to poor re- The noise reduction mode is set to “NR-3”. ception or when playing video tapes on which the picture quality is poor.
  • Page 39 Sound Settings Menu To continue adjusting the sound ... Repeat from step 2. Adjusting the treble, bass and left/right balance 4. Press the “PROCEED” button. The treble, bass and left/right balance can be adjusted to The bass has now been adjusted. suit your tastes.
  • Page 40 Screen Settings Menu 4. Adjust using the buttons. Adjusting the Position, Size, Fine Picture, Picture Adj The position of the image can be adjusted and flickering of the image can be corrected. Example: Adjusting the vertical position in the normal mode Press the PROCEED button on the remote controller to V–POSITION...
  • Page 41 Function Settings Menu Information Setting the on-screen display Adjusting the Auto Picture When using the monitor for presentations, etc., the moni- ON ...... The Picture ADJ and Fine Picture tor can be set so that the input source, screen mode, etc., adjustments are made automati- do not appear.
  • Page 42 Adjusting the position of the menu display 3. To adjust the position... Use these operations to adjust the position of the menus Adjust using the buttons. that appear on screen. F U N C T I O N Example: Adjusting the position of the menu display OSM ADJ.
  • Page 43 Setting the power management for computer images Information This energy-saving (power management) function auto- Power management function matically reduces the monitor’s power consumption if no operation is performed for a certain amount of time. * The power management function automatically re- duces the monitor’s power consumption if the Example: Turning the power management function on computer’s keyboard or mouse is not operated for a...
  • Page 44 POWER/STANDBY indicator Power management POWER/STANDBY Power management Turning the picture back on Description mode indicator operating status Horizontal and vertical synchronizing sig- Picture already on. Green Not activated. nals are present from the computer. No horizontal synchronizing signals are Operate the keyboard or mouse. The pic- Standby Orange Activated.
  • Page 45 Setting the gray level for the sides of the screen Setting the brightness level to the minimum Use this procedure to set the gray level for the parts on the Locking this mode allows you to dim the picture. screen on which nothing is displayed when the screen is set to the 4:3 size.
  • Page 46 Setting the picture to suit the movie Resetting to the default values The film image is automatically discriminated and projected Use these operations to restore all the picture adjustments, in an image mode suited to the picture. audio settings, to the factory default values. [NTSC, PAL, 480I(60Hz) only] Refer to page 17 for items to be reset.
  • Page 47 Option Setting Menu Setting the BNC connectors Select whether to set the input of the 5 BNC connectors to Setting the allocation of the audio connectors RGB or component. Setting the AUDIO 1, 2, and 3 connectors to the desired input.
  • Page 48 Setting a computer image to the correct RGB se- Information lect screen RGB SELECT modes On the computer image select the RGB mode, moving im- age (video) mode, wide mode or digital broadcast. One of these 4 modes must be selected in order to display the following signals correctly.
  • Page 49 Setting high definition images to the suitable Adjusting the display position in the RGB3 input mode screen size If the image is not stable when in the RGB3 input mode, switch Use this procedure to set whether the number of vertical the “RGB3 ADJ.”...
  • Page 50 Information Menu Setting the language for the menus The menu display can be set to one of seven languages: Japa- nese, English, German, French, Swedish, Italian or Spanish. Checking the frequencies and polarities of input signals Example: Setting the menu display to “DEUTSCH” Use this function to check the frequencies and polarities of Press the PROCEED button on the remote controller to the signals currently being inputted from a computer, etc.
  • Page 51 Setting the video signal format 4. Once the setting is completed ... Use these operations to set the video signal format. Press the “EXIT” button to return to the main menu. To delete the main menu, press the “EXIT” button once Example: Setting the video signal format to “3.58 more.
  • Page 52 External Control Application Communication Parameters These specifications cover the communications control of (1) Communication system Asynchronous the plasma monitor by external equipment. (2) Interface RS-232C (3) Baud rate 9600 bps Connections (4) Data length 8 bits Connections are made as described below. (5) Parity (6) Stop bit 1 bit...
  • Page 53 Communication Format Check Sum Example 8 bit 8 bit 8 bit 8 bit 8 bit 8 bit 8 bit 8 bit ○ ○ Command 1 Unit ID 1 Unit ID 2 Command 2 Data Length Data Check Sum Command 1 Total 208H Unit ID 1...
  • Page 54 Command Reference List 03. Input Switch Change Function CMD1 CMD2 LEN The external control equipment switches the input of the plasma monitor. 01. Power ON Transmission Data 02. Power OFF DFH 80H DATA00 03. Input Switch Change 04. VOLUME Gain Data DATA00 : Input Select 01H: Video1 05.
  • Page 55 06. AUDIO Mute On 09. COLOR Gain Data Function Function The external control equipment switches on AUDIO Mute of the plasma The external control equipment changes the COLOR gain data of the plasma monitor. monitor. Transmission Data Transmission Data DFH 80H DATA00 DATA01 DATA02 CKS DATA00: USER PICTURE Gain Flag DATA01: COLOR Gain Flag...
  • Page 56 11. SHARPNESS Gain Data Function DATA00 DATA01 CKS The external control equipment changes the SHARPNESS gain data of the DATA00: USER PICTURE Gain Flag plasma monitor. DATA01: BRIGHT Gain Flag Transmission Data DFH 80H DATA00 DATA01 DATA02 CKS 14. Input MODE Request DATA00: USER PICTURE Gain Flag Function DATA01: SHARPNESS Gain Flag...
  • Page 57 17. RED Gain Data 19. BLUE Gain Data Function Function The external control equipment changes the RED Gain Data of the plasma The external control equipment changes the BLUE Gain Data of the plasma monitor. monitor. Transmission Data Transmission Data DFH 80H DATA00 to DATA03 CKS DFH 80H...
  • Page 58 21. VIDEO ADJ Request DATA05: SHARPNESS Gain F0H: -16 Function The display returns the video adjustments information by the external control FFH: -01 equipment’s request. 00H: 0 Transmission Data 01H: +01 10H: +16 0CH DATA00 to DATA0B CKS DATA06: CONTRAST Gain 00H: 0 DATA00: RED Gain(Bias) D8H: -40...
  • Page 59 21. Audio Select Set 23. PLE_INVERSE Set Function Function The external control equipment sets combinations of audio and video inputs The external control equipment sets the PLE and INVERSE (inverse of image for the plasma monitor. brightness) of the plasma monitor. Transmission Data Transmission Data DATA00...
  • Page 60 Table for Signals Supported Supported resolution • When screen mode is NORMAL, each signal is converted to a 640 dots 480 lines signal. (Except for *3) • When screen mode is FULL, each signal is converted to a 853 dots 480 lines signal. (Except for *2) Computer input signals supported on this system Screen mode Vertical...

  • Page 61: Trouble Shooting

    60 minutes. If the problem persists, contact your NEC dealer for service. *2 In the following case, power off the monitor immediately and contact your dealer or authorized NEC Center. The monitor turns off 5 seconds after powering on and then the POWER/STANDBY indicator blinks. It indicators that the power supply circuit or,...
  • Page 62 Specifications Product Name PlasmaSync™ 42MP1 Plasma Monitor Product Code PX-42VM1A 1.18" 2.32" Screen Size 36.3"(H) 20.4"(V) inches 41.3" (1048) (30) (59) 921(H) 518.4(V) mm diagonal 42" Aspect Ratio 16 : 9 37.1" (942) Resolution 853(H) 480(V) pixels Pixel Pitch 0.04"(H) 0.04"(V) inches 1.08(H) 1.08(V) mm Color Reproduction 256 levels, 16,770,000 colors...
  • Page 63 NEC Technologies, Inc. 1250 N. Arlington Heights Road, Suite 500 Itasca, Illinois 60143-1248 Printed on recycled paper Printed in Japan 78411091...
  • Page 64 TROUBLESHOOTING MAIN PWB System No image presentation; picture error Are video signals present at Pins 11, Errors in analog filter block (around the signal circuits before 17, and 24 of IC6502? the AD converter) Are signals of 3Vp-p present at Pins 1 Are pulses of 3Vp-p (video signal) normally generated at Pins to 47 (odd numbers only) of the AD 35 to 166 (except for VDD and GND) of IC9004?
  • Page 65 TROUBLESHOOTING Fault in the digital signal processor system Fault in the digital signal processor system Is the input any of the VIDEO, DVD, RGB VIDEO inputs? Are there normal 3Vp-p pulse Are pulses of 3Vp-p (video signal) normally outputs (video signal) available at generated at Pins 70 to 98 (except for VDD Pins 122 to 159 (except for the and VSS) of IC7506?
  • Page 66 TROUBLESHOOTING Errors in the sync system Is a clock signal present at Pin 49 of the Fault in the AD connector block or peripheral circuits of X9001 AD connector? Are signals of 3Vp-p present at Pins 51 Fault in the AD connector block or peripheral circuits of IC9004 (HSYNC) and 53 (VSYNC) of the AD connector? Are signals of 5Vp-p present at Pins...
  • Page 67 TROUBLESHOOTING Troubleshooting for the VIDEO System 1. No presentation of VIDEO signal pictures The RGB signal is present at The H/V sync signal is present Fault in the MAIN PWB Pins 1, 3, and 5 of the POMN at Pins 7, 8, 9, and 10 of the connector.
  • Page 68 TROUBLESHOOTING 2. No presentation of NTSC pictures (Continued from Item 1; ternary Y/C separation) From *A The VIDEO signal is present at the Fault in peripheral circuits of Q5201 to Q5204, Q5235, and FL5201 emitter of Q5235. Signal Y is present at TP5209, and Fault in peripheral circuits of Q5226 to Q5229 and FL5202 for the Signal C at TP5210.
  • Page 69 TROUBLESHOOTING 4. No color generation The RGB signal is present at Pins 1, 3, Fault in the MAIN PWB and 5 of the POMN connector. The R-Y/B-Y signal is present at Pins Fault in peripheral circuits of IC5404 51 and 52 of IC5404. The R-Y/B-Y signal is present at Pins Fault in peripheral circuits of IC5403 7 and 8 of IC5403.
  • Page 70 TROUBLES HOOTING 5. No NTSC color generation (Continued from Item 4) The C signal is present at Pin 13 of Fault in peripheral circuits of IC5404 IC5404. The C signal is present at Pin 14 of Fault in peripheral circuits of IC5205 IC5205.
  • Page 71 TROUBLESHOOTING Troubleshooting for the HD/PC System 1. No presentation of HD/DVD/DTV pictures The RGB signal is present at The H/V sync signal is present Fault in the MAIN PWB Pins 1, 3, and 5 of the POMN at Pins 7, 8, 9, and 10 of the connector.
  • Page 72 TROUBLESHOOTING 2. No presentation of PC pictures The RGB signal is present at The H/V sync signal is present Fault in the MAIN PWB Pins 1, 3, and 5 of the POMN at Pins 7, 8, 9, and 10 of the connector.
  • Page 73 TROUBLESHOOTING Troubleshooting for the AUDIO System No sound generation from the speaker Is the mute function canceled? Is the audio input correctly selected? Check various settings. Is the signal present at M2801 of the SP PWB? Check the speaker and speaker cable. Are signals present at the LM and RM connectors of the AUDIO PWB? Disconnection, etc.
  • Page 74 TROUBLESHOOTING The audio signal is available at POAB. Fault in the AUDIO PWB The audio signal is present at Pins 23 and 24 of Fault in Q1021/Q1022/Q1005 IC1001. The audio signal is present at Pins 2/4/8/10/30/ Fault in IC1001 32 of IC1001. Fault in Q1004 to Q1009 4-11...
  • Page 75 TROUBLESHOOTING Troubleshooting for the POWER circuit Failure in POWER ON Is the POWER LED lit? Is the outlet correctly connected? Connect the outlet correctly. Is 100V AC available behind the Fuses F1 and F2 have F1 and F2 fuses? blown out. Replace the fuses.
  • Page 76 TROUBLESHOOTING Does the fan run when the Is 12V available at Pin Fault in IC9705 and its main POWER supply is P0F1/P0F2? oeripheral circuits turned ON? Is 5V available at Pin The fan is out of order on the P0F1/P0F2? side where 5V is available.
  • Page 77 TROUBLESHOOTING Is 0V available at Pin 99 Fault in peripheral circuits (MAIN) of IC9501? of IC9501 Fault in TH1 and its peripheral circuits in the POWER unit Is 0V available at Pin 45 Fault in peripheral circuits (MAIN) of IC9501? of IC9501 Fault around the MODULE circuit...
  • Page 78 TROUBLESHOOTING When the main power supply Is the potential kept at “H” at Fault in IC9501 and its is turned ON, is it possible to Pins 79 and 80 (MAIN) of peripheral circuits hear the sound of the AC relay IC9501? to turn ON? Is the potential kept at “H”...

  • Page 79: Method Of Adjustments

    METHOD OF ADJUSTMENTS <Adjustment items for the replacement of the PWB POWER unit and the PDP module> 1. When replacing the MAIN PWB (PWC-4418A), follow the steps for Set Adjustments 1. 2. When replacing another PWB, no adjustments are required. 3.
  • Page 80 METHOD OF ADJUSTMENTS <Set Adjustments> 1. Screen position and phase adjustment 1-1. Video screen position adjustment 1-2. DVD/HD/DTV screen position adjustment 2. Adjustment of +170V and +70V 3. Adjustment of +5V <PWB Layout> 1. MAIN PWB PWC-4418 (PWC-4418A MAIN, PWC-4418B PANEL) 2.
  • Page 81 METHOD OF ADJUSTMENTS <PWB Adjustments> 1. Setting and confirmation before adjustment (1) For the adjustment and inspection of the MAIN PWB (PWC-4418) unit, TP9701 and TP9702 should be short-circuited. * By this treatment, the action for [6-8. Fan stop detection] is made invalid (disregarded). If a DC fan or a dummy is used, this short-circuit action is not required.
  • Page 82 METHOD OF ADJUSTMENTS 2. VIDEO PWB adjustments 2-1. Adjustment of chroma signal level (adjustment of AN5390) (1) Enter an HD 16-gradation gray scale signal input in DVD/HD/DTV. (2) Select an HD input by the use of an input changeover switch of the remote control or the CTL PWB. (3) Assume the factory adjustment mode with the remote control and select the U-COL of [D CONTROL HDTV].
  • Page 83 METHOD OF ADJUSTMENTS Make adjustments so that the waveform becomes flat (Approx. 0.95Vp-p) Fig. 2-3 HDTV MN Connector Pin 1 (GOUT) 2-2. Adjustment of VIDEO signal level (adjustment of TA1222, TA1229) Select the VIDEO input by the use of an input changeover switch of the remote control or the CTL PWB.
  • Page 84 METHOD OF ADJUSTMENTS (13) Change over the input signal to PAL and repeat the steps of (7) and (12) above. However, the adjust- ment of TINT is not required. (14) Change over the input signal to SECAM and repeat the steps of (7) and (12) above. However, the adjustment of TINT is not required.
  • Page 85 METHOD OF ADJUSTMENTS 3. MAIN PWB adjustments 3-1. Adjustment of RGB/PC signal level For the adjustments specified below, enter a 16-gradation gray scale signal input in the RGB1 input terminal in the PC mode 5 (PC98 480@60 Program No.05). The numerals in the step-shaped waveform denote the levels at the respective steps on the assumption that the all-white level is 255.
  • Page 86 METHOD OF ADJUSTMENTS (9) Check the waveforms at TPG4 and TP-G and make adjustments by pressing the cursor key [<] or [>] so that a waveform as shown in Fig. 3-4 can be obtained. Arrange the Scale 15 to stay at the H level and also Scales 13, 11, 9, 7, 5, and 3 to stay at the H level, and others at the L level.
  • Page 87 METHOD OF ADJUSTMENTS 4. APL control setting (1) Assume the factory shipment setting mode with the remote control and select the APL setting screen by pressing the PROCEED key. (2) Press the cursor key of the remote control and confirm that the following setting has been made: 1 PSC LOCK-VD [OFF] (PSC DATA fixing ON/OFF for VIDEO/YPbPr) 2 PSC LEVL-V...
  • Page 88 METHOD OF ADJUSTMENTS 6-4. PC 400 line mode check (1) Apply a PC mode 3 (Program No.3 PC98 400@56Hz) input to the RGB1 input terminal and select PC INPUT. (2) Confirm that a normal display is presented. (3) After selecting [POSITION] on the screen by the use of the PROCEED key, set up [FULL] with the WIDE key and confirm that the screen size is normally changed over.
  • Page 89 METHOD OF ADJUSTMENTS 7. Plug & Play (PnP) data writing EDID data writing for the PC1 (D-SUB15) input Using the appropriate PnP jig, the EDID data are written in IC1004. 7-1. Method of connection D-SUB cable Monitor Set to be inspected (PWB) inspection jig Personal RGB signal generator...
  • Page 90 METHOD OF ADJUSTMENTS EDID data writing for the PC3 (DV1) input 7-6. Data writing (1) Short-circuit the section between TP7003 and TP7004. (For writing ready) (2) Using a writing jig, enter inputs of clock (DDC CLOCK) from Pin 6 of the RGB3 input terminal (M7201) and data (DDC DATA) from Pin 7 according to the specified writing sequence, and write the data of Table 5-2 in IC7201.
  • Page 91 METHOD OF ADJUSTMENTS <Set Adjustments> 1. Screen position and phase adjustment MHPOS: Adjustment of the horizontal display range for the PDP module MVPOS: Adjustment of the vertical display range for the PDP module H POS: Adjustment of the horizontal signal position in the display range V POS: Adjustment of the vertical signal position in the display range 1-1.
  • Page 92 METHOD OF ADJUSTMENTS (14) Change over the input video signal to the DTC 1080i signal. Press the cursor key [<] or [>] of the remote control to select [1080B] for [HDS] of the screen. Repeat the steps of 1-1 (3) to (11) above. Return [HDS] to [1035i].
  • Page 93 METHOD OF ADJUSTMENTS <PWB Layout> 1. MAIN PWB (PWC-4418) IC7011 PANEL IC9501 µ-COM IC6502 IC8701 PALMIRA IC9802 IC7503 IC7504 IC8505 IC9004 IC7506 IC8501 TIRAMISU AMDP SCREEN3 IC8504 IC8503 9 RS 5 AE 1 5-15...
  • Page 94 METHOD OF ADJUSTMENTS 2. VIDEO PWB (PWC-4417) IC5601 IC5209 IC5208 5-16...
  • Page 95 METHOD OF ADJUSTMENTS 3. SUB PWB (PWC-4419) PWC-4419E PWC-4419C PWR PWB SP PWB 4. POWER unit layout 1 11 5 1 4 1 D+170 D+70 D.GN D+170 D+70 3 1 PI 5-17...
  • Page 96 METHOD OF ADJUSTMENTS <Signal Waveforms for Adjustments> 1. VIDEO input Input: Composite video input or S-terminal input for one system * The S-terminal input is selected when a cable is inserted in the S terminal. 2. DVD/HD/DTV input (1) HD: Y/Pb/Pr component input, ternary sync signal 100% color bar signal (mVp-p) (2) DVD: Y/B-Y/R-Y component input (HD/DVD in common) 700 (all white)
  • Page 97 METHOD OF ADJUSTMENTS 3. RGB/PC input (1) Horizontal sync period Video signal 0.7Vp-p Sync signal TTL level Positive/negative polarity (2) Vertical sync period Video signal 0.7Vp-p Sync signal TTL level Positive/negative polarity * The data a to j above are specified in the next page and thereafter, classified for various inspection signals. 5-19...
  • Page 98 METHOD OF ADJUSTMENTS 4. RGB/PC signal timing table PC mode Signal name VU-6010 VU-6010 PC98 PC98 NTSC PAL/SECAM 400@56Hz 400@70Hz 480@60HZ Definition 640*240 768*288 640*400 640*400 640*480 Dot clock frequency (MHz) 12.214 14.752 21.053 25.175 25.175 H frequency (kHz) 15.734 15.557 24.826 31.469...
  • Page 99 H sync polarity Sync on G V sync polarity Sync on G Scan type interlaced interlaced interlaced interlaced interlaced VGROM NO. Signal reference origin DS (Div.) Data VESA Monitor Timing Standard Ver 1.0 R0.6 DS (Div.) Data from NEC TECH 5-21...
  • Page 100 METHOD OF ADJUSTMENTS PC mode Signal name VESA VESA VESA VESA VESA 600@56Hz 600@60Hz 600@72Hz 600@75Hz 600@85Hz Definition 800*600 800*600 800*600 800*600 800*600 Dot clock frequency (MHz) 49.5 56.25 H frequency (kHz) 35.156 37.879 48.077 46.875 53.674 V frequency (Hz) 56.25 60.317 72.188...
  • Page 101 Pos. Pos. V sync polarity Sync on G Pos. Pos. Scan type interlaced interlaced interlaced interlaced interlaced VGROM NO. Signal reference origin DS (Div.) Data I/O Data GA-PG3DX Calculated from NEC TECH 8-26-97 from NEC TECH Specification VESA 480@75Hz 5-23...
  • Page 102 H sync polarity Pos. Pos. Neg. Neg. V sync polarity Pos. Pos. Pos. Neg. Neg. Scan type interlaced interlaced interlaced interlaced interlaced VGROM NO. Signal reference origin NEC TECH 8-26-97 Calculated from VESA Monitor Timing Standard VESA 600@60Hz Ver 1.0 R0.6 5-24...
  • Page 103 V sync polarity Pos. Pos. — Pos. Pos. Scan type interlaced interlaced interlaced interlaced interlaced VGROM NO. Signal reference origin VESA Monitor Timing Standard DS (Div.) Data VESA Monitor Timing Standard Ver 1.0 R0.6 from NEC TECH Ver 1.0 R0.6 5-25...
  • Page 104 METHOD OF ADJUSTMENTS PC mode Signal name IDC-3000G IDC-3000G HDTV-J DTV (480P) DTV (720P) PAL 625P NTSC 525P Definition 768*576 640*480 1920*1034 644*483 1280*720 Dot clock frequency (MHz) 29.687 24.39 74.25 24.37 74.25 H frequency (kHz) 31.389 31.47 33.75 31.469 45.000 V frequency (Hz) 59.9...
  • Page 105 METHOD OF ADJUSTMENTS PC mode Signal name IHDTV-W SSPE JSPE MAC@12” Definition 1920*1080 1024*512 852*480 1152*870 Dot clock frequency (MHz) 74.25 H frequency (kHz) 33.75 33.727 15.75 68.681 V frequency (Hz) 60/60 60.012 59.94 75.062 H total (µS) 29.630 29.650 63.750 14.560 (dots)

  • Page 106: Circuit Description

    CIRCUIT DESCRIPTION I. MAIN PWB Circuit Operation 1. Video signal processor block In the MAIN PWB, various video signals converted into analog RGB signals at the VIDEO PWB are further converted into digital signals, and various signal processing for enlargement, contraction, etc., is carried out there.
  • Page 107 CIRCUIT DESCRIPTION (3) For digital signal input (RGB3) Panel Link Auto receiver Picture IC7011 IC8701 ϒ Process Scan Signal Sharpness & Convert Select screen Size On screen IC8501 IC7503 IC7506 IC9004 In the case of RGB3 input, the digital RGB signal input from the PL1 connector is in the serial data mode. Therefore, these serial data are converted into the parallel data at the panel link receiver of IC7011.
  • Page 108 CIRCUIT DESCRIPTION (7) RGB chrominance conversion and signal changeover block (IC7503) IC7503 generates outputs to IC7506 through a changeover action between the video signal output from the AD converter of IC6502 and another video signal output from the definition converter of IC8501. In cases of video inputs, etc., the RGB signal is output after conversion into the 422-chrominance signal.
  • Page 109 CIRCUIT DESCRIPTION (12) Panel link block In the case of RGB3 input, the digital RGB signal input fed from the PL1 connector comes in the serial data, which are then converted into the parallel data at the Panel Link receiver of IC7011. Since IC7011 is not used in cases other than the RGB3 input, the microcomputer of IC9501 makes the PD0 terminal (Pin 9) stay at the”L”...
  • Page 110 CIRCUIT DESCRIPTION (4) Timing controller block (IC9004) IC9004 is a timing controller used to generate a variety of timing pulses based on the entered sync signal and clock inputs. IC9004 incorporates three systems of timing pulse generator circuits. Pins 211 to 239 are called System A, Pins 12 to 43 are called System B, and Pins 52 to 90 are called System C.
  • Page 111 CIRCUIT DESCRIPTION (2) Auto-picture function When the auto-picture function is ON with an RGB input, the microcomputer picks up information about the screen position from IC8701 through the MUSE bus (SKMUSE, SDMUSE, SBMUSE) and sets up the screen position for IC8701 based on this information. During the entry of RGB3 input, IC8701 generates an output of screen position data based on an input toward the DE input terminal (Pin 36).
  • Page 112 CIRCUIT DESCRIPTION VIDEO PWB 1. AUDIO block The AUDIO signal input sent from M1008 to M1010 is controlled and selected by IC1001 (MM1311BD; AUDIO VIDEO SW) under the control of I2C bus. The selected AUDIO signal is output from the AB connector to the AUDIO PWB through IC1005 (BA4558: BUFFER).
  • Page 113 CIRCUIT DESCRIPTION 2-2. Frequency Y/C separation (PAL, PAL M, PAL N) The VIDEO signal input entered in Q5201 is band-pass limited at FL5201. Compensation for the level and frequency characteristics is then carried out at the AMP (Q5202/5203) at the latter stage. The resultant output is processed for Y/C separation at the latter stage.
  • Page 114 CIRCUIT DESCRIPTION R-Y/B-Y R-Y/B-Y R-Y/B-Y IC5408 IC5407 Signal C input IC5404 IC5403 (TA8772 (NTSC/PAL (TA1229 ; SECAM) (TA8814 ; CTI) ; 1H DELAY) ; TA1222) Control signal Control signal R-Y/B-Y At the stage of RGB matrix, the analog RGB signal is generated and output at the RGB matrix stage, based on this chrominance signal and the preceding brightness signal.
  • Page 115 CIRCUIT DESCRIPTION 3. Chrominance block The chrominance signal input from M1005 and another chrominance signal input of M1007 are selected at IC1004 from IC1002, and the resultant signal is entered in IC5602 (AN5390; chrominance decoder). (When 5BNC SELECT is set for COMPONENT at OSD, the Pr,Y,Pb input becomes available at Pins of RGB inputs at M1007.) An analog RGB signal is generated and output at the RGB matrix stage of IC5602 (AN5390;...
  • Page 116 CIRCUIT DESCRIPTION 232C PWB (EXTERNAL CONTROL terminal) This system is arranged to enable external control through the RS-232C. It is used when controlling this ma- chine with a personal computer or the like. The RS-232C control signal applied to M2002 is led to the microcom- puter through the RS connector, after the completion of interface processing with the outside (processing for voltage conversion) with the aid of the RS-232C driver (IC2001).
  • Page 117 CIRCUIT DESCRIPTION POWER Circuit Operation Power Unit (Including m-COM operation in regard to POWER) • When the commercial power supply is given from the AC inlet, the POWER unit begins to generate outputs of M+7V and M+14V for the µ-COM system. M+7V is fed from Pin 3 of the PM to IC9504 in order to turn on SW (S2601) of the main power supply.

  • Page 118: Method Of Disassembly

    METHOD OF DISASSEMBLY 1. Diagonal view of the main unit rear panel...
  • Page 119 METHOD OF DISASSEMBLY 2. REAR PANEL ASSY (1) Remove the twenty seven screws S10 and take out the REAR PANEL ASSY M02 .
  • Page 120 METHOD OF DISASSEMBLY 3. CONNECTOR (1) Remove the connectors [HD E04 , PV E09 , SY E11 , PQ E13 , MN E19 , and RS E17 ].
  • Page 121 METHOD OF DISASSEMBLY (2) Remove the connectors [AB E10 , AE E12 , LD E14 , and PW E16 ]. (3) Remove the connectors F1 and F2. (4) Remove the connector PL.
  • Page 122 METHOD OF DISASSEMBLY (5) Remove the connectors [PH E21 , PD E22 , PM (6) Remove the screws S02 and S04 , and take E18 , and PN E05 ]. out the barrier cable E04 and the earth plate (pulse) M24 .
  • Page 123 METHOD OF DISASSEMBLY 4. MAIN PWB ASSY (1) Remove the screw C04 and take out the MAIN PWB ASSY A01 .
  • Page 124 METHOD OF DISASSEMBLY 5. POWER UNIT (1) Remove the eight screws S02 and take out the POWER UNIT A10 .
  • Page 125 METHOD OF DISASSEMBLY 6. TERMINAL PANEL (MMP-L) ASSY (1) Remove the six screws and the seven screws S04 , and take out the TERMINAL PANEL (MMP-L) ASSY. (For more details, refer to P.8-2.) TERMINAL PANEL (MMP-L) ASSY...
  • Page 126 METHOD OF DISASSEMBLY 7. TTERMINAL PANEL (MMP-R) ASSY (1) Remove the six screws and the seven screws S04 , and take out the TERMINAL PANEL (MMP-R) ASSY. (For more details, refer to P.8-2.) TERMINAL PANEL (MMP-R) ASSY...
  • Page 127 METHOD OF DISASSEMBLY 8. COVER (BOTTOM) and FAN (1) Remove the four screws S02 and take out the COVER (BOTTOM) M13 . (2) Remove the eight screws S07 and take out the FAN M22 . 7-10...
  • Page 128 METHOD OF DISASSEMBLY 9. BRACKET (MAIN) (1) Remove the six screws S02 and take out the BRACKET (MAIN) M11 . 7-11...
  • Page 129 METHOD OF DISASSEMBLY 10. BRACKET (BOTTOM), (FAN) L, (FAN) R, CENTER STAY ASSY (1) Remove the twelve screws S02 and take out the (3) Remove the three screws S02 and take out the BRACKET (BOTTOM) M13 . CENTER STAY ASSY M10 . (2) Remove the ten screws S07 and take out the BRACKET (FAN) L M14 and (FAN) R M15 .
  • Page 130 METHOD OF DISASSEMBLY 11. CABINET ASSY (1) Remove the ten screws S01 and another ten screws S03 , and take out the CABINET ASSY M03 . 7-13...
  • Page 131 METHOD OF DISASSEMBLY 12. CTL PWB ASSY, LED PWB ASSY (1) Remove the four screws S01 and take out the CTL PWB ASSY A04 and the LED PWB ASSY A06 . 7-14...
  • Page 132 METHOD OF DISASSEMBLY 13. FILTER (1) Remove the sixteen screws S01 and take out the the BRACKET FILTERS (T) M05 , (B) M07 , and (S) M06 . 7-15...
  • Page 133 METHOD OF WIRING 7-16...
  • Page 134 MEMO...

  • Page 135: Disassembly

    DISASSEMBLY...
  • Page 136 DISASSEMBLY...

  • Page 137: Packaging

    PACKAGING Packing details A) Safety bracket SASSY B-1) Safety bag SASSY...
  • Page 138 PACKAGING B-2) ACESSORY SASSY C) CUSHION (TC) The tapes to be used shall be the item specified below. Paper adhesive tape 30mm*18m: 92203227 Paper adhesive tape 19mm*18m: 92203226...
  • Page 139 PACKAGING D) CUSHION, CARTON BOX...
  • Page 140 PACKAGING F) Joints and P.P band Insert and lock the joints (24CS0551) in 4 positions. Hook the P.P band (92203857) at about 2cm from the inside of each joint, and fasten it a stopper (P.P band) (24282431). 1.Insert a joint in the corrugated 2.
  • Page 141 PACKAGING F) CARTON BOX OUT...
  • Page 142 PACKAGING H) LABEL,PP band Necessary items shall be printed on the bar code serial (16761791), which is then stuck to the left side of the corrugated cardboard OUT-T. Aooly a P.P band (92203857) and fasten it with a stopper (P.P band) (24282431).

  • Page 143: Replacement Parts List

    REPLACEMENT PART LIST Notes: 1. Parts orders must contain model name, parts number and 3. The components identitied by a mark or with the symbol Nos. shaded are critical for safety. Replace only with parts description. 2. When you place an order for spare parts, please refer to number specified.
  • Page 144 *** MISCELLANEOUS ELECTRICAL PARTS *** 73B3B108 CN 3P (LM) 300W, 2468-24 73B422PV CN 4P (PV) 550, 2468-26 73B445AB CN 4P (AB) 1125, 2468-26 73B4B209 CN 4P (SY) 275W, 1365-30 73B511AE CN 5P (AE) 275, 2468-26 73B519PQ CN 5P (PQ) 475, 2468-26 73B530LD CN 5P (LD) 750, 2468-26 73B628PW...
  • Page 145 *** MECHANICAL PARTS *** 24H37221 BRACKET FILTER (S) ASSY 24H35721 BRACKET (BOTTOM) 24H35731 BRACKET (FAN) L 24H35741 BRACKET (FAN) R 24HS2661 CENTER STAY ASSY 24H35941 NET (A) 24H35951 NET (B) 24H35961 NET (C) 24H35971 NET (D) 24H35981 NET (E) 24H35991 NET HOLDER (A) 24H36001 NET HOLDER (B)
  • Page 146 *** PRINTED & PACKING MATERIALS *** M1002 70599174 CONNECTOR, BNC 1P (P2201-A) M1007 70599175 CONNECTOR, BNC 5P (P2303-A) 70810759 LINE CORD UC3S L3.0 16761791 SERIAL LABEL 24M14821 PROTECTION SHEET 24M15221 POLYETHLENE BAG (70*100) 24MU4811 CARTON BOX (B) 24MU4821 CUSHION (TL) 24MU4831 CUSHION (TR) 24MU4841...

  • Page 147: Connection Diagrams

    CONNECTION DIAGRAMS 11-1...

  • Page 148: Block Diagram

    BLOCK DIAGRAMS MAIN PWB BLOCK 12-1...
  • Page 149 BLOCK DIAGRAMS VIDEO BLOCK 12-2...
  • Page 150 BLOCK DIAGRAMS AUDIO BLOCK 12-3...

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