Hitachi P50H401 Service Manual
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Hitachi P50H401 Service Manual

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SERVICE MANUAL

SERVICE MANUAL REVISION HISTORY INFORMATION
DATE
Feb, 23, 2007
Apr, 27, 2007
Oct, 29, 2007
Oct, 29, 2007
Oct, 31, 2007
Nov, 06, 2007
Nov, 06, 2007
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
FEBRUARY 2007
REVISION #
SM00001
FIRST ISSUE OF MANUAL
CH1
Digital Main PWB reference (Page 110)
CH2
Updated Troubleshooting Flowchart (Page 55)
CH2
Updated LED Diagnostics (Page 58)
CH3
Added Remote Control Info. How to enter Service Menu (Page 114)
CH4
Added In-Depth Video Troubleshooting Flowchart (Page 115)
CH4
Added In-Depth Audio Troubleshooting Flowchart (Page 120)

PLASMA DISPLAY PANEL

PA
No. 0224
P50H401 / DW3-U
P50T501 / DW3-U
P50H4011 / DW3-U
R/C: CLU-4371UG2
R/C: CLU-4372UG2
R/C: CLU-4371A
REASON
HHEA-MANUFACTURING DIVISION
p/n HL02075
P50H401
p/n HL02076
P50H4011
p/n HL02401
P50T551

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Summary of Contents for Hitachi P50H401

  • Page 1: Service Manual

    No. 0224 P50H401 / DW3-U P50T501 / DW3-U P50H4011 / DW3-U SERVICE MANUAL R/C: CLU-4371UG2 p/n HL02075 P50H401 R/C: CLU-4372UG2 p/n HL02076 P50H4011 R/C: CLU-4371A p/n HL02401 P50T551 SERVICE MANUAL REVISION HISTORY INFORMATION DATE REVISION # REASON Feb, 23, 2007...

  • Page 2: Table Of Contents

    R/C: CLU-4371A p/n HL02401 P50T501 P D D D W3-U N T S C R/C: CLU-4371UG2 p/n HL02075 P50H401 A T S C A C C hassis R/C: CLU-4372UG2 p/n HL02075 P50H4011 TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW CONTENTS SAFETY PRECAUTIONS .

  • Page 3: Safety Precautions

    DW3U SAFETY PRECAUTIONS Comply with all cautions and safety-related notes NOTICE: Leakage Current Hot Check located on or inside the cover case and on the chassis or plasma Plug the AC line cord directly into a 120V AC outlet. (Do not use an module.

  • Page 4: Product Safety Notice

    For the latest information, always the module (glass-panel). consult the current HITACHI Service Manual. A subscription to, 3. Please do not stand the module with the edge of the glass- or additional copies of HITACHI Service Manuals may be panel on the table since this might result in damage to the obtained at a nominal charge from HITACHI Sales Corporation.

  • Page 5: Servicing Precautions

    DW3U SERVICING PRECAUTIONS CAUTION: Before servicing instruments covered by this Electrostatically Sensitive (ES) Devices service data and its supplements and addenda, read and Some semiconductor (solid state) devices can be damaged follow the “Important Safety Instructions” on page 3 of this easily by static electricity.
  • Page 6 5. Inspect (on the circuit board copper side) the solder joints IC Removal/Replacement Some Hitachi unitized chassis circuit boards have slotted of the two “original leads”. If they are not shiny, reheat holes (oblong) through which the IC leads are inserted and them and, if necessary, apply additional solder.
  • Page 7 2. Trace along the copper pattern from both wire sides of ensure the maintenance of reliability and safety standards, the pattern break and locate the nearest component contact your Hitachi personnel. directly connected to the affected copper pattern. At IC Connections 3.
  • Page 8 DW3U NOTE: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose. Leadless Chip Components How to Replace Flat-lC (surface mount)
  • Page 9 DW3U Information for service about lead-free solder introduction Hitachi introduced lead-free solder to conserve the "Earth Environment". Please refer to the following before servicing. (1) Characteristic of lead-free solder Melting point of lead free solder is 40-50 C higher than solder containing lead.

  • Page 10: Agency Regulatory Information

    Modifications The FCC requires the user to be notified that any changes or modifications made to this device that are not expressly approved by Hitachi America ,Ltd. Home Electronics Division may void the user’s authority to operate the equipment. Cables Connections to this device must be made with shielded cables with metallic RFI/EMI connector hoods to maintain compliance with FCC Rules and Regulations.

  • Page 11: Acknowledgments And Trademarks

    DW3U ACKNOWLEDGMENTS AND TRADEMARKS This Plasma Television complies with VESA DDC2B specifications, Plug & Play is a system with computer, peripherals (including monitors) and operating system. It works when the monitor is connected to a DDC ready computer that is running an operating system software that is capable for the plug & play. When a Plug and Play PC is powered on, it sends a command to the Monitor requesting identification.

  • Page 12: Introduction

    Digital AV Block and after processing, delivers the image to the display module. This HITACHI Service Manual is intended for the qualified service personnel and it contains the necessary information for troubleshooting the Plasma television set in case of malfunction.

  • Page 13: Specifications

    DW3U SPECIFICATIONS FEATURES 2007 50" Plasma models Model P50H401/P50T501/P50H4011 1240mm x 880.85mm x 422mm Dimension Size Weight 53 Kg Input AC Voltage AC108V~132V (with 3 Plug AC Power Cord i nlet A/C Input type ,1.8m length) Voltage Input AC Frequency...

  • Page 14: Specifications

    DW3U SPECIFICATIONS FEATURES (continued) Model P50H401/P50T501/P50H4011 General Gamma Correction Only for Service Menu Function Picture Enhancer Input Signal Identification Audio Special Mode Power Save Mode With (On/Off) (Video In) Normal: Blue Power Save: Orange Stand by: Red Burning Protection With (Raster Shift:3 option.AII White Pattern) OSD Language (VIDEO) ENGLISH , FRANCAIS , ESPA ÑOL...
  • Page 15 FEATURES & DIFFERENCES BETWEEN 50" MODELS QAM Basic Model Name Class Chassis Series Cabinet Aspect ATSC ATSC/NTSC Digital MPEG Name Design 1Tuner Cable Decoder Gemstar P50H401 H401 DW3A UltraVision Bottom Speaker Silver 16x9 P50T501 DW3A T501 Cineform WW Bottom Speaker Black/Silver 16x9...

  • Page 16: General Specifications

    DW3U General Specifications Environment Specifications Model Specifications P50H401/P50T501/P50H4011 Item Specification Model Name Item Operating Temp. +5°C~+35°C Destination U.S.A. / CANADA Stock Temp. -15°C~+60°C Exterior Cabinet Dimensions Operating Humidity 20%~80%RH (Main Body) (Speaker & 1 2 4 0 m m x 8 8 0 . 8 5 m m x 4 2 2 m m...
  • Page 17 DW3U 9. Display Specification （Continuation） 9.1 Picture Format for Each Input Source Input Auto Aspect Aspect Aspect, Vertical Position, Black Side Panel, PIP Mode Signal Aspect Video ID 16:9 16:9 16:9 Standard 1 Standard 2 Zoom Standard Expanded Zoom 1 Zoom 2 HDMI1 HDMI...
  • Page 18 DW3U [Expansion] <4x3 Format> <16x9 Format> 4:3 Expanded Mode 16:9 16:9 16x9 Standard1 Standard1 162% Horizontal Expansion Ratio 16:9 16x9 Standard2 113% 16:9 16:9 90 100 16x9 Zoom Zoom Horizontal Position 16x9 Format Format Standard 100% 100% 16x9 Expanded Expanded Expanded Zoom1 162%...
  • Page 19 DW3U 9.1.2 Aspect Key Operation (3) HDMI/YPBPR: 1080p/1080i/720p (1) ANT Analog Channel Aspect Aspect Aspect 16:9 16:9 16:9 16:9 Standard1 Standard2 Zoom Standard1 Standard Aspect Aspect Aspect Aspect Aspect Aspect Aspect 16:9 Expanded Zoom Zoom2 Zoom1 Expanded (2) ANT Digital Channel (4) HDMI/YPBPR: 480p/480i, Video/S-Video (a) Aspect: 16x9 (4-1) Auto Aspect OFF...
  • Page 20 DW3U (b) Video ID/HDMI Info: Letter 9.1.3 Vertical Position Operation Aspect Input Vertical Position 16:9 16:9 Standard Expanded Standard1/2 Zoom Standard Expanded Zoom 1 Zoom 2 Video NTSC ±0 step ±10 step ±0 step ±10 step ±10 step ±10 step Analog Gray out (±30 lines)
  • Page 21 DW3U 9.1.4 Black Side Panel Operation 9.1.5 PIP Mode Model Input Aspect POP/SPLIT/ FREEZE PIP/STOROBE 16:9 Standard1 4:3 Standard Black Side Panel Black Side Panel <Available Function on Each Model> 16:9 Standard2 Normal “Off” “On” Model PIP/POP SPLIT Freeze 16:9 Standard Real T Series 16:9 Zoom...
  • Page 22 DW3U Digital Component/Composite/S-IN/HDMI POP Mode: Mode 1080i 720p 480p 480p 480i 480i 1080i/p 720p 480p 480p 480i 480i Main 16x9 16x9 16x9 16x9 16x9 16x9 16x9 16x9 Digital 1080i 16x9 － － － － － － － － － － －...
  • Page 23 DW3U (1) PIP Key Operation (2) Freeze Operation Normal Viewing Main Frozen Freeze Exit Freeze Main Frozen Moving Freeze Freeze STROBE SPLIT (3) SWAP Operation Main Audio Audio 16x9 Main Audio Audio Exit Main Audio Audio PIP OFF PIP OFF (Note) If PIP Key is pushed from a Normal screen, PIP of Last Mode will be displayed.
  • Page 24 DW3U (4) Monitor Out (4) PIP Position Operation Main Audio Audio Main Audio Audio Main Audio Audio Main Monitor Out Monitor Out Audio Audio (Note) When right and left Key are pushed, the sound of Main and Sub interchanges. The picture and sound of the selected picture are outputted from Monitor out. When the selected picture is Component or HDMI signal and audio out is monitor, monitor out is no picture and no audio.

  • Page 25: Basic Setup & Operation

    How to set up your new HITACHI Plasma Television To take measures to prevent the Plasma Television from tipping over and prevent possible injury it is important to mount the unit in a stable and flat surface. Securing to a table-top ANTENNA 1.
  • Page 26 How to set up your new HITACHI Plasma Television AC CORD INSTALLATION INSTRUCTION The AC cord provided with your new Plasma Television needs to be installed correctly to avoid the AC cord from disconnecting when rotating the TV on its Table top stand.
  • Page 27 How to set up your new HITACHI Plasma Television VIEWING The best picture is seen by sitting directly in front of the TV and about 10 to 18 feet from the screen. During daylight hours, reflections from outside light 4" Minimum BEST may appear on the screen.
  • Page 28 Hook-up Cables and Connectors Most video/audio connections between components can be made with shielded video and audio cables that have phono connectors. For best performance, video cables should use 75-Ohm coaxial shielded wire. Cables can be purchased from most stores that sell audio/video products. Below are illustrations and names of common connectors.
  • Page 29 Quick Reference Remote Control Buttons and Functions In addition to controlling all of the functions on your HITACHI Plasma TV, the new remote control is designed to operate different types of devices, such as, DVD Players, CBL (Cable Boxes), set-top-boxes, satellite receivers, and VCRs.
  • Page 30 Quick Reference Remote Control Buttons and Functions In addition to controlling all of the functions on your HITACHI Plasma TV, the new remote control is designed to operate different types of devices, such as, DVD Players, CBL (Cable Boxes), set-top-boxes, satellite receivers, and VCRs.

  • Page 31: Front Panel Controls

    This card slot is for future software upgrades. appears in the top right corner of the TV screen. Hitachi will notify you if a software upgrade is These buttons also serve as the cursor down ( ) required for your TV. In order to receive written and up ( ) buttons when in MENU mode.
  • Page 32 NOTES: Your HITACHI Plasma TV will appear to be turned OFF (lights orange) if there is no video input when INPUT : 1, 2, 3, Front and HDMI 1, 2 , Front. Check the Power Light to make sure the TV is turned off or in Stand-by mode (lights red) when not in use.

  • Page 33: Rear Panel Connections

    Rear Panel Connections Antenna Input To switch between Cable and Air input, go to the Channel Manager option to change the signal source CABLE or AIR. Audio/Video Inputs 1, 2 and 3 By using the INPUTS button, the CURSOR PAD ( ), and the SELECT button or CURSOR PAD of the remote control, you can select each video source.
  • Page 34 Connecting External Video Sources The FRONT panel jacks are provided as a convenience to allow you to easily connect HDMI or DVI signals from a DVD, Set Top Box , Video Game as shown in the following examples (When connecting DVI signal it will need to connect the audio output into the Front Audio Input jacks) : A) Connecting HDMI signal.
  • Page 35 Connecting External Video Sources The FRONT panel jacks are provided as a convenience to allow you to easily connect a camcorder , DVD, Video Game and a VCR as shown in the following examples: FRONT INPUT PANEL UPGRADE CARD (SERVICE USE ONLY) PUSH EJECT Note : For Monoaural devices, please connect Audio signal cable into...
  • Page 36 Rear Panel Connections Outside Antenna Cable TV coaxial cable 2-Way signal splitter VCR #1 VCR #2 OUTPUT S-VIDEO S-VIDEO INPUT Optional Optional HDMI HDMI HDMI OUTPUT HDMI OUTPUT DIGITAL OUTPUT OUTPUT AUDIO OUT HDTV Set-Top Box HDMI DIGITAL DIGITAL DVD Player OUTPUT CAPABILITY OUTPUT CAPABILITY NOTE: Cables are optional, except when specified.
  • Page 37 Tips on Rear Panel Connections • S-VIDEO, Y-P , or HDMI connections are provided for high performance laserdisc players, VCRs etc. that have this feature. Use these connections in place of the standard video connection if your device has this feature.
  • Page 38 Connecting External Video Sources CONNECTING A VIDEO AND STEREO AUDIO SOURCE TO INPUT1 ~ INPUT-FRONT Cable or 1. Connect the cable from the VIDEO OUT of the Air signal VCR or the laserdisc player to the INPUT (VIDEO) jack, as shown on the Rear Panel to the right.
  • Page 39 Connecting External Video Sources CONNECTING A COMPONENT SOURCE WITH HDMI OR NOTE: 1. Completely insert the connection cord DVI CAPABILITY TO HDMI 1, HDMI 2 OR HDMI FRONT plugs when connecting to rear panel jacks. The picture and sound that is played back will be abnormal if the connection is loose.
  • Page 40 Connecting External Audio/Video Devices CONNECTING A COMPONENT AND STEREO AUDIO SOURCE TO INPUT 2 or 3 :Y-P NOTE: 1. Completely insert the connection cord Connect the cable from the Y OUT of the plugs when connecting to rear panel jacks. Laserdisc/DVD player or HDTV set top box to The picture and sound that is played back the INPUT (Y) jack, as shown on the Rear...
  • Page 41 Connecting External Audio/Video Devices CONNECTING A VIDEO AND MONAURAL AUDIO CABLE SOURCE TO INPUT 1 ~ FRONT INPUT Air signal 1. Connect the cable from the VIDEO OUT of the VCR or the laserdisc player to the INPUT (VIDEO) jack, as shown on the Rear Panel on the right.
  • Page 42 DW3U IMPORTANT NOTES Items Notes Arcing sound from A buzzing sound might be heard when the plasma display monitor is turned on in a very quiet plasma display monitor’s room. This is due to the plasma panel drive circuit when it is functioning. This arcing sound panel.

  • Page 43: Adjustments

    DW3U ADJUSTMENTS TABLE OF CONTENTS TO GO TO A SECTION, CLICK ON ITS HEADING BELOW 1 Adjustment procedure start up....................43 1.1 How to get into adjustment mode ................43 1.2 Changing data and selecting adjustment code............43 2 Memory initialize ........................43 2.1 Memory initialize operation ..................43 2.2 Factory and service adjustments ................44 3 Video Adjustment ........................44 3.1 Sub-Contrast &...

  • Page 44: Adjustment Procedure Start Up

    DW3U 1 ADJUSTMENT PROCEDURE START-UP The P50H401, P50T501 and the P50H4011 PDP TV sets pass through adjustment procedures during the assembly process. These adjustments must be done to assure the best performance of the PDP set for the consumer. Also, after servicing, these same adjustments must be done.

  • Page 45: Factory And Service Adjustments

    DW3U 3.12 525i Cb,Cr Clamp offset adjustment ·Process of Memory Initialize operation. Preparation A screen is be colored cyan when MEMORY INIT (1) Change signal format from 525(480)p to 525(480)i. (See Fig.2) start. A screen is be colored green when MEMORY INIT Adjustment finish normally.

  • Page 46: Power Supply Vs, Va Voltage Adjustment

    DW3U 4 POWER SUPPLY Vs, Va voltage adjustment Item Power Unit Vs, Va Adjustment Adj. point Refer to following Adjustment Preparations Adjustment Procedures Remarks (1) Turn on the set and perform (1) Turn Vs ADJ to adjust Vs voltage Permissive level of voltage in pre-heat run more than 1 min to be within 0.1V of the value...

  • Page 47: White Balance Adjustment

    DW3U 5 WHITE BALANCE ADJUSTMENT Remarks (1) Color temperature should be adjusted under the condition in which the screen is the brightest, thus General Notes for White Balance (1) If the incident illumination is more than 20 lux, the initial value for adjustment is set to its maximum. (2) Adjustment is made by reducing brightness only.

  • Page 48: Video Color Temperature Adjustment (Standard)

    DW3U 6 DIGITAL MAIN CHECK 5.3 VIDEO COLOR TEMPERATURE ADJUSTMENT (STD) Preparation SYSTEM SOFTWARE VERSION CHECK (1) Same as “Video Color Temperature adjustment: (HIGH)”. (1) Press Menu button on the R/C or control Adjustment panel. (1) Perform the following adjustment with the remote (2) Enter the SETUP options, and then look control.

  • Page 49: White Balance Adjustment Osd Flowchart Diagram

    DW3U 5.4 WHITE BALANCE ADJUSTMENT OSD FLOW DIAGRAM 5.4.1 Adjustment OSD Flowchart (1) Adjust Mode OSD Press [MENU]+[MENU]+[8]+[SELECT] of Control panel. MENU MENU SELECT CH U/D, INPUT CYAN* ADJUST MODE MEMORY INIT GREEN : Finish Normally FACT RESET key for 2 sec. Press RED : Finish Abnormally...
  • Page 50 DW3U 5.4.1 Adjustment OSD Flowchart (continued) CH U/D, INPUT Press to Select DRV Press to adjust ADJUST MODE MEMORY INIT G DRV HIGH Press FACT RESET R DRV HIGH B DRV HIGH WHITE BAL HIGH WHITE BAL MED WHITE BAL STD WHITE BAL B/W CH U/D, INPUT ADJUST MODE...

  • Page 51: Screen Check

    AC cord and then all settings and data are updated. (7) When PDP turns ON , it will tune CH03 this is the complete operation of FACTORY RESET process. SIGNAL ASPECT SPEC(A,B) Hitachi circle pattern 0 +/- 0.5 16:9 Standard1 BACK TO ADJUSTMENTS...

  • Page 52: Settings For Delivery

    DW3U 10 DATA TABLE OF SETTING FOR DELIVERY USER Control Initialization Settings for delivery (FACTORY RESET) Function Initial Data Condition Input Mode Channel 03/03-1 ch Favorite Channels Not Registered PIP On/Off － PIP Mode SPLIT － POP Position Middle Right －...
  • Page 53 DW3U 10 DATA TABLE OF SETTING FOR DELIVERY (continued) Function Initial Data Condition White Balance Red Drive 100% － － Green Drive 100% － － Blue Drive 100% － － Red Cutoff － － Green Cutoff － － Blue Cutoff －...
  • Page 54 DW3U 10 DATA TABLE OF SETTING FOR DELIVERY (continued) Function Initial Data Condition Locks Change Access Code Engage Lock Set Channel Lock All Unlock Set Front Panel Lock Unlock Movie Ratings All Unlock TV Ratings All Unlock Canadian Ratings (Eng.) All Unlock Canadian Ratings (Frn.) All Unlock...
  • Page 55 DW3U 10 DATA TABLE OF SETTING FOR DELIVERY (continued) Function Initial Data Condition Setup Menu Preference Set The Language English Set The Menu Shaded Background Set The Screen Saver Main Picture Moving Option 1 Image Power Screen Wipe Automatic Power Saving Set The Power Saving －...

  • Page 56: Troubleshooting Flowcharts

    DW3U DW3 TROUBLESHOOTING FLOW CHARTS [Power Supply troubleshooting] No Power or (No picture, and No sound) CH 2 Check power supply for damage (Cracks)and SDR IC's for Pin Holes. Video Power Save Mode Is Power Indicator (Input:1 3, Front Input have no signal) lit Orange? Fan Alarm Does Power Indicator...

  • Page 57: Troubleshooting Flow Charts

    DW3U TROUBLESHOOTING FLOW CHARTS (For in depth Troubleshooting Flowchart see page 115) [Terminal PWB circuit tro uble shooting] No picture, no color or dark Analog format signal Digital format signal NTSC, composite, s, component HDMI Cable/Air Are waveforms at Check Main-Digital board Q013-E(Y), Q012-E(PB) and Q011-E(PR) Component video input Cable/Air...
  • Page 58 DW3U TROUBLESHOOTING FLOW CHARTS (For in depth Troubleshooting Flowchart see page 120) [Terminal PWB circuit trouble shooting] No sound, abnormal sound Are waveforms at Check Speaker terminals of speaker Cable/Air, Input 1/2/3/Front HDMI Are waveforms at Check Main-Digital board pin 1(L) and pin 4(R) of Q002 Input 1/2/3/Front Cable/Air Are waveforms at...
  • Page 59 DW3U TROUBLESHOOTING FLOW CHARTS PDP panel self-diagnosis function This function is for a PDP module failure with no picture. To use this Self-Diagnosis function, follow the next steps: Procedure: 1) When the PDP module has some trouble, it generates blue blinking series of the power indicator light. 2) The next table shows the PDP PWB in which failure most probably would be allocated according to the number of blinks.
  • Page 60 DW3U MAINTENANCE MODE ITEM'S DESCRIPTION TABLE. In the Adjustment mode menu there is the Maintenance Mode sub-Menu of the Digital Module. It is useful for system diagnostics. The next table gives a brief explanation of its items. Group Item Indicate format or choices Contents Front [LOCK] [UNLOCK]...

  • Page 61: Block Diagrams

    DW3U CIRCUIT BLOCK DIAGRAM Address Driver Driver Controller Data Controller LOGIC Panel LVDS Receiver Signal Controller Module Vcego Vsago Inlet (LVDS) Power CPUgo Supply PDPgo Filter PWB Unit Fuse Main Power SW Main-Digital PWB Terminal PWB AC-CLK Digital/ Reg. DC-DC Power2 Demodulator (Nereid)
  • Page 62 DW3U POWER SYSTEM BLOCK DIAGRAM AC120V PDP Panel Module Filter PWB Power Supply Unit +16V Vpr2 +12V +10.5V +5.6V STBY+5V Main-Digital PWB +12V +3.3V +1.3V +1.8V +3.3V +3.3V +3.3V DC-DC DC-DC DC-DC Reg. MICRO Reg. Reg. Reg. Reg. Digital Audio Audio Audio +2.5V...

  • Page 63: Connection Diagram

    DW3U CONNECTION DIAGRAM Power Supply Unit PDP Module WIRING CONNECTION DIAGRAM CN64 CN23 VH-10P VH-10P 1 Va N.C. 2 N.C. 3 Vcc 4 GND 5 GND 6 GND AC INLET FILTER PWB N.C. 7 N.C. 8 Vs PFAC PPU1 CN61 9 Vs VH-3P VH-6P...

  • Page 64: Final Wiring Diagram

    DW3U FINAL WIRING DIAGRAM TABLE OF CONTENTS...

  • Page 65: Quick Disassembly Guide

    DW3U QUICK DISASSEMBLE GUIDE (Back Cover 1) ① Remove Screw M3M 6*18 ( 2 pcs.) M6 Cable Clamp ( 2 Pcs.) ② Remove Screw M3M 6*18 ( 2 pcs.) TABLE OF CONTENTS...
  • Page 66 DW3U QUICK DISASSEMBLE GUIDE (Back Cover 2) ① Remove Screw M3D 4*10 ( 26 pcs.) Screw M3S 3*8 ( 11 pcs.) ② Remove Back Cover...
  • Page 67 DW3U QUICK DISASSEMBLE GUIDE (Power Unit, Fan Ass'y) ① Remove Screw M3M 3*8 ( 4 pcs.) Screw M3E 3*8 ( 2 pcs.) ② Remove Power Unit P#HA01912 ③ Remove Screw M3M 3*8 ( 2 pcs.) FAN ASS'Y DETAIL Fan Ass'y ④...
  • Page 68 DW3U QUICK DISASSEMBLE GUIDE (Chassis Ass'y 1) ① Remove Screw M3S 3*8 ( 4 pcs.) ② Remove Screw M3C 4*10 Chassis Ass'y P#UE27031 CHASSIS ASS'Y...
  • Page 69 DW3U QUICK DISASSEMBLE GUIDE (Chassis Ass'y 2) ① Remove Screw M3E 3*8 ( 2 pcs.) Support Metal SUPPORT METAL...
  • Page 70 DW3U QUICK DISASSEMBLE GUIDE (Chassis Ass'y 3) ① Remove Screw M3S 3*8 ( 3 pcs.) ② Remove Screws D-Sub ( 2 Pcs.) ③ Remove Screws T2B 3*10 ( 2 Pcs.) ④⑤Remove Tuner Nut & Washers ⑥ Remove Screw M3M 3*6 ( 2 pcs.) TERMINAL COVER...
  • Page 71 DW3U QUICK DISASSEMBLE GUIDE (Chassis Ass'y 4) ① Remove Screw M3E 3*8 ( 2 pcs.) ② Remove Digital Main Ass'y P#UX28021 ③ Remove Terminal PWB Ass'y P#JP55121 IS NECESSARY TO RELEASE TERMINAL PWB FROM BOARD HOLDERS...
  • Page 72 DW3U QUICK DISASSEMBLE GUIDE (Stand Ass'y, Control Panel Ass'y) ① Remove Screw HEX M5*15( 2 Pcs.) Screw HEX M5*85(2 Pcs.) ② Remove Stand Ass'y P#UX27281(50") *Note: In order to remove stand ass'y is necessary to place Plasma TV carefully on horizontal direction over a soft surface to avoid scratches or other damages.
  • Page 73 DW3U QUICK DISASSEMBLE GUIDE (Control Panel Ass'y 2) ① Remove Screw M3M 6*18 ( 4 Pcs.) ② Remove Screw M3D 4*10 ( 5 Pcs.) Rigid Metal Cover RIGID METAL COVER...
  • Page 74 DW3U QUICK DISASSEMBLE GUIDE (Control Panel Ass'y 3) ① Remove Screw M3D 4*10 ( 4 Pcs.) Screw T2B 4*16 ( 4 Pcs.) C Metal Shield C-SHIELD METAL...
  • Page 75 DW3U QUICK DISASSEMBLE GUIDE (Control Panel Ass'y 4) ① Remove Screw M3D 4*10 ( 2 Pcs.) CONTROL PANEL ASS'Y DETAIL Control Panel Ass'y ②③ Remove Screw M3D 4*10 ( 2 Pcs.) ④ Remove SD PWB Ass'y P#JP55121 ⑤⑥ Remove Screw M3E 3*8 ( 3 Pcs.) Screw T2B 3*10 ⑦...

  • Page 76: Final Assembly Guide

    DW3U FINAL ASSEMBLY GUIDE TABLE OF CONTENTS...
  • Page 77 DW3U FINAL ASSEMBLY GUIDE...
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  • Page 80 DW3U FINAL ASSEMBLY GUIDE...
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  • Page 85: Waveforms

    DW3U WAVEFORMS Numbers inside circle correspond to locations shown in the circuit diagram. Waveforms taken using an NTSC Color Bar signal and a X10 probe. The amplitude of the waveform is shown as ∆ . UT01 Pin 13 TunerM_CV (out) JY02 Pin 4 Monitor-Out I001 Pin 26 TunerM_CV (in) I001 Pin 28 MAIN_Y/V (out)

  • Page 86: Dc Voltages

    DW3U DC VOLTAGES (50" Models only) Symbol Pin No. Voltage Symbol Pin No. Voltage Symbol Pin No. Voltage CN64 65.7 V PFA1 7.8 V CN63 5.1 V 3.3 V 4.8 V 3.1 V (Vs) 86.8 V (Vs) 86.8 V (Vs) 86.8 V Symbol Pin No.

  • Page 87: Circuit Schematic Diagrams

    DW3U BASIC CIRCUIT DIAGRAM CONTROL 1 of 1 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. •...
  • Page 88 DW3U BASIC CIRCUIT DIAGRAM Filter 1 of 1 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. •...
  • Page 89 DW3U BASIC CIRCUIT DIAGRAM LED 1 of 1 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. •...
  • Page 90 DW3U BASIC CIRCUIT DIAGRAM SD 1 of 2 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. •...
  • Page 91 DW3U BASIC CIRCUIT DIAGRAM SD 2 of 2 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. •...
  • Page 92 DW3U BASIC CIRCUIT DIAGRAM Terminal 1 of 5 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. TERMINAL •...
  • Page 93 DW3U BASIC CIRCUIT DIAGRAM Terminal 2 of 5 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. TERMINAL •...
  • Page 94 DW3U BASIC CIRCUIT DIAGRAM Terminal 3 of 5 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. TERMINAL •...
  • Page 95 DW3U BASIC CIRCUIT DIAGRAM Terminal 4 of 5 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. TERMINAL •...
  • Page 96 DW3U BASIC CIRCUIT DIAGRAM Terminal 5 of 5 PRODUCT SAFETY NOTE: Components marked with a ! and shaded have special characteristics important to safety. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTE of this Service Manual. Don't degrade the safety of the receiver through improper servicing. TERMINAL •...

  • Page 97: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS DW3-U DW3-U TERMINAL PWB (Component side) BACK TO TABLE OF CONTENTS...
  • Page 98 PRINTED CIRCUIT BOARDS DW3-U DW3-U TERMINAL PWB (Solder side)
  • Page 99 PRINTED CIRCUIT BOARDS DW3-U DW3-U SD PWB (Component side)
  • Page 100 PRINTED CIRCUIT BOARDS DW3-U DW3-U SD PWB (Solder side)
  • Page 101 PRINTED CIRCUIT BOARDS DW3-U DW3-U LED PWB (Component side) (Solder side)
  • Page 102 PRINTED CIRCUIT BOARDS DW3-U DW3-U FILTER PWB (Component side) (Component side)
  • Page 103 PRINTED CIRCUIT BOARDS DW3-U DW3-U FILTER PWB (Solder side) (Solder side)
  • Page 104 PRINTED CIRCUIT BOARDS DW3-U DW3-U CONTROL PWB (Component side)
  • Page 105 PRINTED CIRCUIT BOARDS DW3-U DW3-U CONTROL PWB (Solder side)

  • Page 106: Parts List

    DW3U REPLACEMENT PARTS LIST PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. ABBREVIATIONS Capacitors: Resistors:...
  • Page 107 DW3U PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART # DESCRIPTION...
  • Page 108 DW3U PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART # DESCRIPTION...
  • Page 109 DW3U PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART # DESCRIPTION...
  • Page 110 DW3U PRODUCT SERVICE NOTE: Components marked with a have special characteristics important to safety. Before replacing any of these components, read carefully, the PRODUCT SAFETY NOTICE of this Service Manual. Don’t degrade the safety of the receiver through improper servicing. SYMBOL PART # DESCRIPTION...
  • Page 111 DW3-U 50" MODEL BOARD LAYOUT DIAGRAM POWER UNIT PWB HA01912 DIGI-MAIN PWB FILTER PWB (NEPTUNE) JP55131 MAIN DIGITAL PWB MODEL PART NUMBER P50H401 UX28021 P50H4011 UX28021 P50T501 UX28022 CH 1 TERMINAL PWB LED PWB CONTROL PWB SD PWB TERMINAL PWB, SD PWB, LED PWB and CONTROL PWB: p/n JP55121...
  • Page 112 50" Plasma - Panel Boards DW3U Y-SUS PWB JP54581 X-SUS PWB JP54571 SDR-U PWB JP54592 XBUS-U PWB JP54611 SDR-D PWB JP54602 XBUS-D PWB JP54621 HA01912 A-BUS-L PWB JP54631 Logic PWB JP54092 A-BUS-C PWB JP54651 A-BUS-R PWB JP54641...

  • Page 113: Quick Reference Parts List

    50" Plasma - Cable Assemblies FLAT CABLE FLAT CABLE p/n EK02192 p/n EK02191 FLAT CABLE FLAT CABLE p/n EK02193 POWER CABLE p/n EK02194 POWER CABLE p/n EF26353 p/n EF26343...
  • Page 114 DW3U QUICK REFERENCE PARTS LIST IC'S & UNITS No. Symbol Description Function PWB ASSY Remarks F9A1 FN00478 FUSE 51MS 100 L-U 125V 10A FUSE FILTER L9A1A BZ06241 LINE FILTER TF3022H-A172Y10R0- AC NOISE FILTER FILTER DN01 CC01871R LIGHT EMITTING DIODE RED/ORANGE LED DN02 CC01863R SML012BC4T...

  • Page 115: Remote Controls Used In Dw-1, 2 And 3 Entering Service Menu

    DW1 / DW2 / DW3 Service Modes available to the technician (via remote only) DW3 - H models DW3 - T models MENU + MENU + MENU + 8 + SELECT = Service Adj Mode (I2C Adjust) MENU + MENU + MENU + 9 + SELECT = Panel Test Mode (see below) CH 3...
  • Page 116 IN DEPTH TROUBLESHOOTING OF DIGI-MAIN RELATED TO VIDEO PROBLEMS Trouble-Shooting Guide for video failure. NOTES: Remember! Your first checking instruments are your senses; see, smell, touch, hear before following the next troubleshooting guides. Find additional troubleshooting information from the website: www.hitachiserviceusa.com. NOTE: Waveforms were taken with a 480p YPbPr Color Bar signal No picture, no color or dark Analog format signal from Tuner,...
  • Page 117 …from the previous page Repair/Replace the Is video signal failing Is analog signal from tuner or the Terminal from tuner UT01 pin tuner failing? board. no. 13? Repair/Replace the Is Monitor Out failing? Terminal board..from previous page Follow next procedure: (1) Select ‘Maintenance’...
  • Page 118 …continued from the previous page At the CableCard Does the CableCard Repair/Replace Diagnostics submenu, user menu appear in Digital Main is CableCard Id number the OSD? all 0’s? Check POD Cable POD PWB connector Is connector Repair/Replace POD connector Damaged? Check POD Check the DC voltage in the POD board at the...
  • Page 119 …from the previous page Unplug EMP0 connector from the POD-PW01 terminal and check the voltages in the PA01 connector at the main digital board pin no. 1 (+3.3Vdc) and pin no 80 (+5.6Vdc). Repair/Replace Are any of the POD PWB. voltages OK? Repair/Replace Digital Main...
  • Page 120 ...from four pages back Digital Main Board Remove the Main digital board and PMS1 check the resistance to ground at (160p connector) the next points: -Before RL69 -Before RL67 -Before RL66. Ω QL64 RL69 Does resistance QL62 RL67 check result in less QL61 RL66 than 1Mohm?
  • Page 121 IN DEPTH TROUBLESHOOTING OF DIGI-MAIN RELATED TO AUDIO PROBLEMS Trouble-shooting guide for audio failure. No sound, abnormal sound Follow “A” instruction in video Are waveforms at troubleshooting of Check Speaker terminals of speaker terminal board. Cable/Air Cable/Air, Input 1/2/3/Front HDMI1/2 HDMI-FRONT Are SD Are waveforms at...
  • Page 122 ...from previous page Remove the Main digital board and check the resistance to ground at the Vias points which are the path for the audio signals. Is the measured Repair/Replace the resistance below Digital Main board. 19 Kohm? Repair/Replace the Terminal board.

This manual is also suitable for:

P50t501P50t501/dw3-uP50h4011/dw3-uP50h401/dw3-u

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