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Toshiba TLP710U Service Manual
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Toshiba TLP710U Service Manual

Toshiba TLP710U Service Manual

3lcd data projector
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FILE NO. 333-9807
SERVICE MANUAL
3LCD DATA PROJECTOR
TLP710U, TLP711U
TLP710E, TLP711E
TLP710H, TLP711H
TLP711
PRINTED IN JAPAN, Nov., 1998
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Summary of Contents for Toshiba TLP710U

  • Page 1 FILE NO. 333-9807 SERVICE MANUAL 3LCD DATA PROJECTOR TLP710U, TLP711U TLP710E, TLP711E TLP710H, TLP711H TLP711 PRINTED IN JAPAN, Nov., 1998...

  • Page 2: Table Of Contents

    CONTENTS SAFETY PRECAUTIONS .............. i IMPORTANT PRECAUTIONS ............ i IMPORTANT SAFETY INSTRUCTIONS ....... i i SECTION 1 PART REPLACEMENT AND ADJUSTMENT PROCEDURES 1 . LOCATION OF MAIN PARTS ......... 1 - 1 4 . ELECTRICAL ADJUSTMENT .......... 1 - 6 4-1.

  • Page 3: Location Of Main Parts

    SECTION 1 PART REPLACEMENT AND ADJUSTMENT PROCEDURES 1. LOCATION OF MAIN PARTS Fig. 1-1-1 2. LOCATION OF PC BOARDS Fig. 1-2-1...

  • Page 4: Disassembling

    CAUTIONS BEFORE STARTING SERVICING Electronic parts are susceptible to static electricity and may easily damaged, so do not forget to take a proper grounding treatment as required. Many screws are used inside the unit. To prevent missing, dropping, etc. of the screws, always use a magnetized screwdriver in servicing.
  • Page 5 This connector is open This connector is open This connector is open This connector is open This connector is open < Adjustment of LCD > If the red and blue LCD panels need to be adjusted, follow the procedures in the item “Red/Blue LCD adjustment”.
  • Page 6 8. Adjust the focus ring and the raster focus of the LCD 7. If the focus or raster geometry is changed, when which has not been replaced. If the green LCD is not tightening the screws holding the LCD mount, loosen replaced, adjust the green raster.
  • Page 7 12. Leave the LCD block until the adhesive is hardened for a required time. In this case, place a thin paper on the LCD block to prevent dusts from entering. 13. When the adhesive is hardened, connect the FPC of the LCD to the connector of the PC board, and turn on the power.

  • Page 8: Electrical Adjustment

    < Green LCD adjustment > 4. ELECTRICAL ADJUSTMENT 1. Confirm connection of the LCD panel (if not con- < Test Equipments and Test Jigs > nected, connect the LCD to the connector of the PC • Oscilloscope board.) • Digital voltmeter 2.
  • Page 9 (2) Default status setting 1) Connect computer and boot adjustment software. 2) Set contrast & brightness at the default. (Refer to owner’s manual) Fig. 1-4-2 Display of computer monitor (Normal menu) (3) Adjustment method 1) Adjustment is carried out by using Adjust menu on the computer monitor.

  • Page 10: Lcd Drive Adjustment (A)

    4-1. LCD Drive Adjustment (A) (In case of "TA" type optical engine) Table 1-4-1 Test Adjust Items Input Signal Equip- Test Point Adjust Key Adjust Value Note ment 1. Input level check 1-1. Input level check 16-stairstep Oscillo- TP405 (R) •...
  • Page 11 Table 1-4-2 Test Adjust Items Input Signal Equip- Test Point Adjust Key Adjust Value Note ment 4. Ghost adjustment RGB signals –––– –––– • If ghost is high, adjust 5. Comb adjustment RGB signals Oscillo- TP404 (R) About 7.4V • Minimize each flicker. scope TP504 (G) About 7.4V...
  • Page 12 4-1B. LCD Drive Adjustment (B) (In case of "TB" type optical engine) Table 1-4-3 Test Adjust Items Input Signal Equip- Test Point Adjust Key Adjust Value Note ment 1. Input level check 1-1. Input level check 16-stairstep Oscillo- TP405 (R) •...
  • Page 13 Table 1-4-4 Test Adjust Items Input Signal Equip- Test Point Adjust Key Adjust Value Note ment 3-4. White level expand 16-stairstep Oscillo- TP402 (R) • Adjust the 16th 16th stairstep waveform scope TP502 (G) stairstep wave- TP602 (B) form for following values: 7.00 ±...
  • Page 14 Table 1-4-5 Test Adjust Items Input Signal Equip- Test Point Adjust Key Adjust Value Note ment 8.Color adjustment in dark area 16-stairstep –––– –––– • Shown below. waveform 1. Feed 16-stairstep waveform and check color in the dark area (5th step from pedestal). 2.
  • Page 15 4-1-1. The outline of the color uniformity compen- 2. Adjustment item sation circuit • G Panel Amplitude: WMC (G-SHADE) 1. The action of the compensation circuit • R Panel Amplitude: WMD (R-SHADE) 1) This circuit compensate the brightness uniformity • G Panel Phase: WME (G-PHASE) of the LCD panel.
  • Page 16 Make the [WMC] and [WMD] data which are Halogen lamp (500W x 2) the same as Front mode. 4. Toshiba camera adjustment chart c. Lead the [WME] and [WMF] data from the following equation. (1), (2) Color bar chart (PN70909322) d.
  • Page 17 2. Connect the D-SUB9 pin connector of adjustment 4-2-1. FB Adjustment cable and COM1 port of the personal computer with a Note: RS-232C cable. This adjustment should be made only when the lens is Note: replaced or removed from the camera PC board. •...
  • Page 18 This page is not printed. 1-16...

  • Page 19: Part Configuration And Their Symbols

    SECTION 2 SERVICING DIAGRAMS 1. PART CONFIGURATION AND THEIR SYMBOLS 1-1. Replacing Subminiature "CHIP" Parts 1-1-4. Removal (Transistors, Diodes, etc.): 1. Melt the solder of one lead. 1-1-1. Required Tools: 1. Fine tipped, well insulated soldering “pencil”, about TWEEZERS 30 Watts. 2.

  • Page 20: Circuit Diagrams

    1-2. Precautions for Part Replacement • In the schematic diagram, parts marked (ex. • Using the parts other than those specified shall F801) are critical part to meet the safety regulations, violate the regulations, and may cause troubles such so always use the parts bearing specified part codes as operation failures, fire etc.
  • Page 21 1-5. Inductor Indication ... Η Unit None µ ... µH ... mH 10µ Tolerance None ... ±5% ... ±0.1% ... ±0.25% ... ±0.5% Type Tolerance ... ±1% ... ±2% ... ±10% Fig. 2-1-11 ... ±20% Type ... Peaking For other, model name is described. 1-6.
  • Page 22 This page is not printed.

  • Page 23: Safety Precaution

    SECTION 3 PARTS LIST SAFETY PRECAUTION The parts identified by mark are critical for safety. Replace only with part number specified. The mounting position of replacement is to be identical with originals. The substitute replacement parts which do not have the same safety characteristics as specified in the parts list may create shock, fire or other hazards.
  • Page 24 4. EXPLODED VIEWS 4-1. Packing Assembly Fig. 3-4-1...
  • Page 25 4-2. Chassis Assembly (1) Fig. 3-4-2...
  • Page 26 4-3. Chassis Assembly (2) (For TLP711) Fig. 3-4-3...
  • Page 27 4-4. Optical Box Assembly Fig. 3-4-4...
  • Page 28 4-5. Arm Assembly (For TLP711) Fig. 3-4-5...
  • Page 29 This page is not printed. 3-33...
  • Page 30 T O S H I B A C O R P O R A T I O N 1- -1, SHIBAURA 1- - CHOME, MINATO - - KU, TOKYO 105 - - 8001, JAPAN...

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