Toshiba PD42W1U Service Manual

42" plasma display

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FILE NO. 350-9902
SERVICE MANUAL
42" PLASMA DISPLAY
PD42W1U
PD42W1E
PRINTED IN JAPAN, June., 2000
M

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Summary of Contents for Toshiba PD42W1U

  • Page 1 FILE NO. 350-9902 SERVICE MANUAL 42" PLASMA DISPLAY PD42W1U PD42W1E PRINTED IN JAPAN, June., 2000...
  • Page 2                           !       " #     $       %   "$&   ''         ' "   "   ( ) ' * #    '+  %   ', -  %   !       - 2 -...
  • Page 3: Safety Precautions

    Safety Precautions and the projection monitor should be repaired and rechecked before it is returned to the customer. General Guide Lines 1. It is advisable to insert an isolation transformer in Hot-Check Circuit the AC supply before servicing a hot chassis. 2.
  • Page 4: Plasma Display Technology

    Rear Glass FIg. A Fig. C Toshiba 42 inch wide plasma display panel is developed for large screen multimedia display with space saving. On the rear glass the data electrode is mounted. The dielectric is coated on the rear glass.
  • Page 5: Pixel Structure

    Pixel Structure Initialization Color Phosphor Scan Electrode Data Electrode Xenon Neon Sustain Electrode Dielectrics Aluminum Base Rear Glass Front Glass Fig. E Fig. G 42 inch plasma display panel has 1,226,880 pixels. To clear any remaining electric charge into the pixel, trape- Each pixels structure is shown fig.
  • Page 6: Wall Voltage

    Wall Voltage Sustain Step 2 Fig. I Fig. K when input pulses are stopped, Ions and Electrons which are When sustain pulse is stopped, Ions and Electrons are charged on the dielectric around the electrodes are remained again as Wall voltage. However polarity of wall remained.
  • Page 7: Repeat Step 1 To Step

    Sustain Step 4 Repeat Step 1 to Step 5 Sustain Cycle Sustain Pulse AC Drive Type Plasma Display Fig. M Fig. O When sustain pulse is stopped, Ions and Electrons are To keep discharge continuously step 1 to 5 operation will be remained again as Wall voltage.
  • Page 8: Plasma Ai (Adaptive Brightness Intensi- Fier)

    Dual Scan Fig. Q The sustain period of sub-field drive system. Therefore brightness peak is limited. Because 480 horizontal lines scanning is carried out during address period. Dual scan system can reduce scanning time from 480 to 240 in the address period. Then spaced time by dual scanning can be used for sustain operation.
  • Page 9: Service Hint

    Service Hint screw(1) Remove the Back Cover Back Cover (30mm) Stand the Unit used for Optional Accessory screw(4) (20mm) Optional Accessory screw(2) (Pedestal) (17mm) screw(3) (8mm) Remove: 6 screws (1) 10 screws (2) 9 screws (3) 4 screws (4) Service Position (Front) (Front) (Front)
  • Page 10: Adjustment Procedure

    Adjustment Procedure Adjustments Item / Preparation +B Set-Up 230 V 110 V 1. Confirm the main voltage set switch is set to 110V.(U model) or 230V (E model) P6 board Note: 230V covers input AC voltage from 200V till 265V, and 110V covers from 90V till 130V. 2.
  • Page 11 Adjustment Potentiometer Location R6565 Panel Data Label R541 R528 R6654 R639 R494 R6501 R6597 R6587 230V/110V Switch R6754 Test Point Location TPDA5 TPDA2 TPDA4 TPDA1 TPDA6 TPVSUS TPVE TPDA3 TPSC1 TPSCN TPSET TPSS2 TPSS1 - 11 -...
  • Page 12: Initialization Pulse Adjust

    Sustain Pulse Adjust Confirm the indicated test point for the specified wave form. 1. Input a Cross hatch signal. Test Point Volume Name 2. Set the picture controls: - Picture mode Normal TPSS1(SS) Sustain Pulse White balance Normal 1.6 sec. 185 V 2.6 sec.
  • Page 13: Alignment Setting

    Alignment Setting How to access Alignment 1) Press and hold the volume down / - button on the front panel of the unit and press the Recall [ ] button on the remote control 3 times quickly within 1 second, this will place the unit into the CAT menu (Main service mode). sys8.0 INPUT Mode...
  • Page 14 IIC menu structure Subject Item Access UP/Down of Left/Right of Cross buttons Button Cross buttons Video signal adj. Sub Brightness R Cutoff B Cutoff G Drive Sub Contrast B Drive G Cutoff R Drive Chroma Control R-Y Axis Angle R-Y Axis Gain Sub Color Sub Tint DS contrast...
  • Page 15 Alignment (The reference figures below are normal and used for representative purpose only.) DS contrast 1) Input 1 Vp-p NTSC (or PAL according to the system) color bar signal into the Video in terminal. 2) Access the DS contrast mode and align as follow. Alignment Item Reference Setting/Special feature...
  • Page 16 Panel W/B Composite/Component signal Equipment NTSC (or PAL according to the system) signal generator Color meter 1) Set the AV mode and input the white pattern signal from NTSC (or PAL according to the system) signal generator. 2) Press the Menu button twice to access main menu and set the manual W/B to Cool. 3) Access the Panel W/B mode and align the Low Light and High Light shown below by using color meter.
  • Page 17: Pos./Size Setting

    PC / RGB signal Equipment RGB signal generator Color meter 1) Set the PC mode and input the white pattern signal from RGB signal generator. 2) Press the Menu button twice to access main menu and set the manual W/B to Cool. 3) Access the Panel W/B mode and align the Low Light and High Light shown below by using color meter.
  • Page 18: Panel Apl / Abl

    Panel APL / ABL 1) Confirm each data. Alignment Item Reference Setting/Special feature APL Shift Level Confirmation only ABL Point Confirmation only ABL Gain Confirmation only ABL Bank Select Confirmation only SG Hold SG Hold is the alignment tool for data copy function. Color/Signal system can be set regardless of input signal. Aging Aging mode is internal pattern generator for panel setting confirmation and the image retention removal.
  • Page 19: Self Check

    Self Check Display Indication 1. Self-check is used to automatically check the bus line IIC1 IIC2 controlled circuit of the Plasma display. 2. To get into the Self-check mode press the volume down IC2401 OK H21 IC8501 OK H51 button on the customer controls at the front of the set, at the same time pressing the SLEEP button on the remote IC8516 OK H52 control, and the screen will show: -...
  • Page 20: Local Screen Failure

    No Power Check AC power code or power source Does not turn the power LED Check F board Fuse F900, F901 Check P1 board Change P1 board Red LED flashing See Self Check section No Picture No picture AV(NTSC, PAL, SECAM), Component(525i, 625i) RGB/Component, PC (525p, 625p) What signal?
  • Page 21: Quick Adjustment After P.c.b. Exchange

    Quick adjustment after P.C.B. exchange When a P .C.B. is changed following P .C.B. should be re-adjusted. Changed Item Volume Test point Level P.C.B. P1 board R528(P1) TPDA1(C1) 75V±0.5V R639(P3) TPVSUS(SS) ±1V R494(P1) TPVE(SS) ±1V DS board DS contrast IIC mode TP216 0.7 Vp-p SC board...
  • Page 22 Location of Cable Wiring CORE P23 P24 P17 P8 SC21 P7 P5 P6 CORE CLAMPER SC20 CLAMPER CLAMPER H3 H11 CLAMPER SC22 SS33 CORE SS32 CLAMPER CORE CORE CORE S77 S6 - 22 -...
  • Page 23 Dimensions of the display unit Memo Units : mm 1030 53.9 920.2 53.9 444.5 P /R P /B TUNER IN REMOTE AUTO AUDIO AUDIO VIDEO 60MHz S-VIDEO SPEAKERS(8Ω) COMPONENT/RGB IN PC IN SEPIAL To connect the power cord and others, refer to the documentation that comes with the Wide Plasma Display. - 23 -...
  • Page 24 Connector Connection & Signal Name AC CODE - F BOARD (F1) P1 BOARD (P1) - SS BOARD (SS1) HG BOARD (H26) - S1 BOARD (S16) HG BOARD (H5) - H2 BOARD (H35) D BOARD (D20) - SC BOARD (SC20) SS BOARD (SS48) - SS2 BOARD (SS47) SS OUT VSUS SS OUT...
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  • Page 27 Chassis Block Diagram S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. S.R. SS47 SS32 SS22 INITIALIZE FLASH MEMORY 70V, 15V PULSE S/P CONVERTER DATA FORMAT GENE. SCAN PULSE SUB-FIELD FORMAT GENE. PROCESSOR PLASMA AI CONVERTER SUSTAIN PULSE GENE.
  • Page 28 Parts Location Bracket Bracket Cabinet with Filter glass Bracket Back cover S1-Board Bracket V1-Board Remote Control Transmitter Power Button S2-Board Front Button AC Cord - 28 -...
  • Page 29 C1-Board C2-Board SU-Board SS2-Board SC-Board SD-Board SS-Board D-Board C4-Board P1-Board SS3-Board H3-Board DS-Module P8-Board P7-Board HG-Board H2-Board C3-Board P6-Board P5-Board P3-Board F-Board Fuse - 29 -...
  • Page 30 XTB4+15AFZ Screws (2) Module Parts XYN3+F8FZ Screws (3) XYN8+F16FZ Screws (4) TNAG041 DS module I/P Converter TPCA72309 Carton Box (PD42W1U) TXAUW010R31A HG board Interface TPCA72310 Carton Box (PD42W1E) TXN/D10R81 D board Digital process & Control TPCA72312 Carton Box (PD42W1B) TXNP110N98...
  • Page 31: Specifications

    Specifications Power Source: 120V AC, 50/60 Hz(PD42W1U) 220-240V AC, 50/60Hz(PD42W1E) Power Consumption: Normal use: 380W (Maximum Current 3.3A) Stand-by condition: 1.7W Power off condition: 0.7W Plasma Display panel: Drive method : AC type 42-inch, 16:9 aspect ratio Screen size: 42”(106cm) diagonal 36.2”(920mm)(W) x20.4”(518mm)(H) x41.6”(1056mm)(diagonal)
  • Page 32 1-1 SHIBAURA 1-CHOME, MINATO-KU, TOKYO, 105-8001, JAPAN...

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Pd42w1e

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