Toshiba TLP-710U Service Manual Download Page 1

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3LCD DATA PROJECTOR

SERVICE MANUAL

TLP710U, TLP711U

TLP710E, TLP711E

TLP710H, TLP711H

FILE NO. 333-9807

PRINTED IN JAPAN, Nov., 1998

TLP711

Summary of Contents for TLP-710U

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

Page 2: ...Power Circuit Diagram 2 9 4 2 Drive Circuit Diagram 2 13 4 3 Digital 1 Circuit Diagram 2 17 4 4 Digital 2 Circuit Diagram 2 20 4 5 Digital 3 Circuit Diagram 2 23 4 6 RGB Circuit Diagram 2 26 4 7 Input Circuit Diagram 2 29 4 8 Shading Circuit Diagram 2 31 4 9 Up Con Circuit Diagram 2 33 4 10 Camera Out Circuit Diagram 2 37 4 11 FAN Key Circuit Diagram 2 41 1 LOCATION OF MAIN PARTS 1 1 2 LOCATION OF...

Page 3: ...1 1 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 SECTION 1 PART REPLACEMENT AND ADJUSTMENT PROCEDURES ...

Page 4: ... connectors on PC board and LCD panel and drive PC board 2 Remove FPC section of LCD panel from drive PC board 3 Remove 3 screws 1 always use a screw driver with a strong magnet and remove LCD plate with LCD to be replaced from LCD block When replacing three LCDs at the same time first remove green LCD plate from the LCD block 4 Remove 3 screws 2 and remove LCD panel from LCD plate Fig 1 3 2 How t...

Page 5: ... Green LCD adjustment After the green LCD panel adjustment is carried out it is necessary to replace or adjust the red and blue LCD panels as described in the item Red Blue LCD adjustment Service jig Extension cable kit 23588458 Focus adjust jig 23430581 Fig 1 3 3 When using the extension cable kit 23588458 you will perform the adjustment on PC boards removing the PC boards from the unit 1 Remove ...

Page 6: ...nel if not con nected connect the LCD to the connector of the PC board 2 Turn the projector on 3 Input the cross hatch pattern from RGB connectors Only input R signal when adjusting the red panel focus and only input B signal when adjusting the blue panel focus 4 Prepare two focus adjustment jigs Insert them onto two holes on bottom of the LCD plate and adjust the LCD plate back and forth until th...

Page 7: ...ntering 13 When the adhesive is hardened connect the FPC of the LCD to the connector of the PC board and turn on the power Check to see pixel deviation of the LCD 14 Check to see dusts of the LCD If dusts are found remove them 15 Turn the power off Remove all the cables connected to the PC board and LCD panel and remove the drive PC board 16 Turn on the power and check operations ...

Page 8: ...5 If the focus or raster geometry is changed when tightening the screws holding the LCD mount loosen the screws slightly and readjust 6 Prepare one focus adjustment jig and insert it onto the upper hole of the LCD plate and adjust the LCD plate back and forth until the best focus is obtained in considering upper and lower balance of the projection screen Refer to Fig 1 3 5 7 If the focus or raster...

Page 9: ...er s manual Fig 1 4 2 Display of computer monitor Normal menu 3 Adjustmentmethod 1 Adjustment is carried out by using Adjust menu on the computer monitor Fig 1 4 3 Display of computer monitor Adjust menu 2 stands for an Adjust menu key After clicked shown in adjustment items click ALF ARG alternately to adjust to a specified value ...

Page 10: ...t Value 0 86V 100 mV between pedestal and white level of sixteenth stair step waveform 1 2V 20 mV between pedestal and white level of sixteenth stair step waveform 1 2V 20 mV between pedestal and white level Adjust at R so that amplitude of waveform A in the right obtains 3 8V 50 mV Then check at G and B Adjust at R so that amplitude of waveform A in the right obtains 9V 50 mV Then check at G and ...

Page 11: ...from above 3 Set the color luminance meter BM 5 with more than 30 min heat run operation performed so that color temperature on the WS 2 can be measured 4 Check the luminance level within the range of 180 190 cd mm When the luminance level is low decrease the values in the same number of steps by using W03 W04 and W05 respectively When the luminance level is high increase the values in the same nu...

Page 12: ...0A W0B Adjust Value 0 72V 50 mV between pedestal and white level of sixteenth stair step waveform 1 15V 20 mV TP701 and TP702 0 95V 20 mV TP703 between pedestal and white level of sixteenth stair step waveform 1 0V 20 mV between pedestal and white level Adjust at R so that amplitude of waveform A in the right obtains 3 8V 50 mV Then check at G and B Adjust at R so that amplitude of waveform A in t...

Page 13: ...Shown below Note Trigger the scope at TP901 H period Make W03 W05 data decrease Minimize each flicker 1 Lay the unit in a dark room and input all white 50 signal 2 Affix the standard white board WS 2 on the top center of screen or suspend it adjacent to the screen from above 3 Set the color luminance meter BM 5 with more than 30 min heat run operation performed so that color temperature on the WS ...

Page 14: ...m pedestal 2 If poor color matching is found due to color unevenness correction 1 If red is strong adjust with W09 for achromatic color 2 If blue is strong adjust with W0B for achromatic color 3 If yellow is strong adjust with W0A for achromatic color Generally amount of correction is largest in the G level and larger in the R level B level is not corrected so the color shows a tending with blue v...

Page 15: ...ected when R G and B panel s brightness uniformity becomes the same level each other 2 Adjustment item G Panel Amplitude WMC G SHADE R Panel Amplitude WMD R SHADE G Panel Phase WME G PHASE R Panel Phase WMF R PHASE R and G panel brightness uniformity are fitted to the B panel brightness uniformity by this four adjustment 3 Relations between the adjustment data and the wave shape Phase When a phase...

Page 16: ...quipments to obtain the flat illumi nation Always use the adjustment chart free from dirty Initial Setting 1 Set the chart facing to the camera and adjust the light position to obtain the even light of the illumination Fig 1 4 4 4 Adjustment method 1 Front mode a Input the 50 APL signal to the TLP711 b Shut out a R signal and make a screen cyan c Adjust WMC G Shade and WME G Phase and make a scree...

Page 17: ... chart in distance of 30 1 cm move the lens to the Tele end with the CZD button and adjust the focus with the CFD button CFU button 5 Keep to press CZU button to set the lens to the Wide end and check the focus is not deviated If the focus is deviated perform the adjustment from step 2 again 2 Connect the D SUB9 pin connector of adjustment cable and COM1 port of the personal computer with a RS 232...

Page 18: ...1 16 This page is not printed ...

Page 19: ...it pattern Fig 2 1 7 2 Press the part downward with tweezers and apply the soldering pencil as indicated in the figure Fig 2 1 8 1 Fine tipped well insulated soldering pencil about 30 Watts 2 Tweezers 3 Blower type hair dryer 1 1 2 Soldering Cautions 1 Do not apply heat for more than 3s 2 Avoid using a rubbing stroke when soldering 3 Discard removed chips do no reuse them 4 Supplementary cementing...

Page 20: ...FR Fusible Symbol Electrolytic Special electrolytic NP Non polarity electrolytic Ceramic plastic M Film Trimmer Unit None F µ µF p pF Rated voltage None 50V For other than 50V and electrolytic capacitors described in the Circuit Diagram Tolerance 1 Ceramic plastic and film capacitors of which capacitance are more than 10 pF None 5 or more B 0 1 C 0 25 D 0 5 F 1 G 2 2 Ceramic plastic and film capac...

Page 21: ...th sufficient service color bar signal being received and reproduced in normal conditions Waveforms and voltage values for the remaining circuit were measured with a broadcasting signal normally received so they may vary slightly accord ing to the programs being received Use them as a measure for servicing All voltage values except the waveforms are ex pressed in DC and measured by a digital voltm...

Page 22: ...2 4 This page is not printed ...

Page 23: ... in processing be sure to include the model number and description 1 For TLP711E TLP711H TLP711U ABBREVIATIONS 1 Integrated circuit IC 2 Capacitor Cap Capacitance Tolerance for Nominal Capacitance more than 10pF Ex 10µF J 10µF 5 Capacitance Tolerance for Nominal Capacitance 10pF or less Ex 10pF G 10pF 2pF 3 Resistor Res Resistance tolerance Ex 470 Ω J 470Ω 5 P 100 0 Symbol Tolerance B 0 1 C 0 25 D...

Page 24: ...3 2 4 EXPLODED VIEWS 4 1 Packing Assembly Fig 3 4 1 ...

Page 25: ...3 3 4 2 Chassis Assembly 1 Fig 3 4 2 ...

Page 26: ...3 4 4 3 Chassis Assembly 2 For TLP711 Fig 3 4 3 ...

Page 27: ...3 5 4 4 Optical Box Assembly Fig 3 4 4 ...

Page 28: ...3 6 4 5 Arm Assembly For TLP711 Fig 3 4 5 ...

Page 29: ...3 33 This page is not printed ...

Page 30: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...

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