Brochure
Page 1
... displaying HD signals as well as MULTIPLE COMPUTER AND VIDEO INPUTS AND OUTPUTS FOR GREATER FLEXIBILITY. ViewSonic® PJ750 Projector High Brightness. Ultra-Portable. With the PJ750 projector, you'll confidently present a positive image anytime, anywhere. One-touch setup button for... and one-year lamp warranty. ** Super bright Packs 2,300 lumens in any setting. Bright, versatile and portable. The ViewSonic PJ750 projector delivers exceptionally bright presentations. Digital horizontal and vertical keystone correction, short focal length and zoom function ensure the perfect size ...
... displaying HD signals as well as MULTIPLE COMPUTER AND VIDEO INPUTS AND OUTPUTS FOR GREATER FLEXIBILITY. ViewSonic® PJ750 Projector High Brightness. Ultra-Portable. With the PJ750 projector, you'll confidently present a positive image anytime, anywhere. One-touch setup button for... and one-year lamp warranty. ** Super bright Packs 2,300 lumens in any setting. Bright, versatile and portable. The ViewSonic PJ750 projector delivers exceptionally bright presentations. Digital horizontal and vertical keystone correction, short focal length and zoom function ensure the perfect size ...
Brochure
Page 2
... and composite Fh: 15~91kHz; All accessory lamps purchased separately are the property of the calculations are +/- 5%. specifications ViewSonic® PJ750 Projector High Brightness. Ultra-Portable. PJ750 Distance Calculator Image Size (Diagonal in inches) Height (in inches) Width (in inches) Throw Distance (in U.S. Out... labor, first-year Express Exchange® service, one-year warranty on the web at ViewSonic.com Subject to PJ250, PJ350, PJ500, PJ501, PJ510, PJ550, PJ551, PJ650, PJ750, and PJ1065 projectors purchased after May 1, 2002. Third-year and 1-year limited lamp...
... and composite Fh: 15~91kHz; All accessory lamps purchased separately are the property of the calculations are +/- 5%. specifications ViewSonic® PJ750 Projector High Brightness. Ultra-Portable. PJ750 Distance Calculator Image Size (Diagonal in inches) Height (in inches) Width (in inches) Throw Distance (in U.S. Out... labor, first-year Express Exchange® service, one-year warranty on the web at ViewSonic.com Subject to PJ250, PJ350, PJ500, PJ501, PJ510, PJ550, PJ551, PJ650, PJ750, and PJ1065 projectors purchased after May 1, 2002. Third-year and 1-year limited lamp...
Service Manual
Page 2
... or computer language, in the contents hereof without the prior written permission of ViewSonic Corporation. DCN1839 Approval T. Trademarks ViewSonic is a registered trademark of their respective owners. Revision History Revision 1.0 Date 11/1/01 Description Of Changes Initial Issue - Sears ii PJ750 Service Manual No part of this publication and to make changes from time...
... or computer language, in the contents hereof without the prior written permission of ViewSonic Corporation. DCN1839 Approval T. Trademarks ViewSonic is a registered trademark of their respective owners. Revision History Revision 1.0 Date 11/1/01 Description Of Changes Initial Issue - Sears ii PJ750 Service Manual No part of this publication and to make changes from time...
Service Manual
Page 3
Specifications 2 3. Assembly Removal, Replacement, and Maintenance 17 7. Block Diagram 22 8. Interconnection Diagaram 23 9. Replacement Parts List 46 APPENDIX -- RS-232C Communication 47 iii PJ750 Service Manual Adjustments 5 5. Disassembly/Exploded Parts Diagrams 44 12. Circuit diagrams 27 11. TABLE OF CONTENTS CAUTION AND SERVICE WARNING 1 1. Wiring diagrams 24 10. Location of Features, Controls, and I/O 3 4. Features 2 2. Troubleshooting 11 6.
Specifications 2 3. Assembly Removal, Replacement, and Maintenance 17 7. Block Diagram 22 8. Interconnection Diagaram 23 9. Replacement Parts List 46 APPENDIX -- RS-232C Communication 47 iii PJ750 Service Manual Adjustments 5 5. Disassembly/Exploded Parts Diagrams 44 12. Circuit diagrams 27 11. TABLE OF CONTENTS CAUTION AND SERVICE WARNING 1 1. Wiring diagrams 24 10. Location of Features, Controls, and I/O 3 4. Features 2 2. Troubleshooting 11 6.
Service Manual
Page 4
... flexible ribbon cable. Do not touch the exhaust fan during operation. 5. The LCD module assembly is powered on. 4. High voltage is present in this product. ViewSonic Corporation 1 CONFIDENTIAL -- DO NOT COPY PJ750 Be careful to provide protection from fire, electric shock, physical injury, harmful radiation and materials.
... flexible ribbon cable. Do not touch the exhaust fan during operation. 5. The LCD module assembly is powered on. 4. High voltage is present in this product. ViewSonic Corporation 1 CONFIDENTIAL -- DO NOT COPY PJ750 Be careful to provide protection from fire, electric shock, physical injury, harmful radiation and materials.
Service Manual
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... 2. 1. Features ► High brightness, High resolution ► Compact size, light weight for portability ► RS-232C Communication ► Complies with Safety Instructions) x 1 Quick start guide x 1 ViewSonic Corporation 2 CONFIDENTIAL -- DO NOT COPY PJ750
... 2. 1. Features ► High brightness, High resolution ► Compact size, light weight for portability ► RS-232C Communication ► Complies with Safety Instructions) x 1 Quick start guide x 1 ViewSonic Corporation 2 CONFIDENTIAL -- DO NOT COPY PJ750
Service Manual
Page 6
... OUT USG 1-W CON TERMINAL PANEL Terminal Panel (Refer below) Remote Control Sensor RGB IN 1 Terminal RGB IN 2 Terminal CONTROL Terminal RGB OUT Terminal USB Terminal ViewSonic Corporation 3 CONFIDENTIAL -- 3. DO NOT COPY PJ750
... OUT USG 1-W CON TERMINAL PANEL Terminal Panel (Refer below) Remote Control Sensor RGB IN 1 Terminal RGB IN 2 Terminal CONTROL Terminal RGB OUT Terminal USB Terminal ViewSonic Corporation 3 CONFIDENTIAL -- 3. DO NOT COPY PJ750
Service Manual
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.... puur NICHI I I RIVJ GLASS 3 LASER PRODUCT iMMNILWILBSI.N WGGWINCIF SAMVILELIENT MISER INJATALLURCH VASHLGRM *SIMS LE GdSTENIXIMRSIL ,,,cF•FmAdILM.C. ViewSonic Corporation 4 CONFIDENTIAL -- VIDEO Button LASER Button RGB Button MOUSE / RIGHT Button Used to the service station. Remember, the POSITION,... click the right mouse button. WARNING The laser pointer of the remote control transmitter is activated. DO NOT COPY PJ750 UHRU . POSITION Button RESET Button rd. I :JUL.!. The laser beam can cause vision problems. AVOID EXPOSURELASER RADIATION IS...
.... puur NICHI I I RIVJ GLASS 3 LASER PRODUCT iMMNILWILBSI.N WGGWINCIF SAMVILELIENT MISER INJATALLURCH VASHLGRM *SIMS LE GdSTENIXIMRSIL ,,,cF•FmAdILM.C. ViewSonic Corporation 4 CONFIDENTIAL -- VIDEO Button LASER Button RGB Button MOUSE / RIGHT Button Used to the service station. Remember, the POSITION,... click the right mouse button. WARNING The laser pointer of the remote control transmitter is activated. DO NOT COPY PJ750 UHRU . POSITION Button RESET Button rd. I :JUL.!. The laser beam can cause vision problems. AVOID EXPOSURELASER RADIATION IS...
Service Manual
Page 8
...menu will appear). 4-2 Ghost adjustment Signals for internal adjustment Adjustment procedure 1. Use DAC-P - B: in the Adjustment menu to display the Adjustment menu. DO NOT COPY PJ750 a. b. G: in the Adjustment menu to adjust so that ghost is at the periphery. (When the flicker is somewhat less than the flicker at a minimum. (.... (Press the [MENU] button of the screen is about 10 min. (Blank white) 2.Set Zoom Wide to adjust the G color flicker. 4. R: in 4-2 Ghost adjustment. 2. ViewSonic Corporation 5 CONFIDENTIAL -- 4. Adjustments 4-1 Before adjusting 1.
...menu will appear). 4-2 Ghost adjustment Signals for internal adjustment Adjustment procedure 1. Use DAC-P - B: in the Adjustment menu to display the Adjustment menu. DO NOT COPY PJ750 a. b. G: in the Adjustment menu to adjust so that ghost is at the periphery. (When the flicker is somewhat less than the flicker at a minimum. (.... (Press the [MENU] button of the screen is about 10 min. (Blank white) 2.Set Zoom Wide to adjust the G color flicker. 4. R: in 4-2 Ghost adjustment. 2. ViewSonic Corporation 5 CONFIDENTIAL -- 4. Adjustments 4-1 Before adjusting 1.
Service Manual
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..., 29%, R: and B: so that the color coordinates (x, y) at the center of the screen and take on the following values. DO NOT COPY PJ750 Place the cursor on [A/D] - [SLIDE SHOW] in the ADJUST menu and press the [OH key once to be x1, y1). Y= Ax 0.712... menu so that the color coordinates (x, y) at the center of the screen. x = (x1 - 0.010) ± 0.003 y = (y1 - 0.025) ± 0.005 ViewSonic Corporation 6 CONFIDENTIAL -- Perform these adjustments after completing the adjustment in the Adjust menu so that the vertical lines spaced every 6 dots are adjusted as possible...
..., 29%, R: and B: so that the color coordinates (x, y) at the center of the screen and take on the following values. DO NOT COPY PJ750 Place the cursor on [A/D] - [SLIDE SHOW] in the ADJUST menu and press the [OH key once to be x1, y1). Y= Ax 0.712... menu so that the color coordinates (x, y) at the center of the screen. x = (x1 - 0.010) ± 0.003 y = (y1 - 0.025) ± 0.005 ViewSonic Corporation 6 CONFIDENTIAL -- Perform these adjustments after completing the adjustment in the Adjust menu so that the vertical lines spaced every 6 dots are adjusted as possible...
Service Manual
Page 10
...internal signals, we will here use G color adjustment when a color differential meter is no conspicuous color shading during a black signal input.) 3. ViewSonic Corporation 7 CONFIDENTIAL -- UNIF]. Adjustment point No. 1 should not be adjusted when there is used) • Solid white (use for the... white balance adjustment described in the diagram on [C. The major adjustment lattice point numbers (a total of the screen. DO NOT COPY PJ750 Adjustment operations (reference) 86% operation 43% operation 29% operation Adjustment 00 point 0 14 29 43 86 100 Input signal (%)...
...internal signals, we will here use G color adjustment when a color differential meter is no conspicuous color shading during a black signal input.) 3. ViewSonic Corporation 7 CONFIDENTIAL -- UNIF]. Adjustment point No. 1 should not be adjusted when there is used) • Solid white (use for the... white balance adjustment described in the diagram on [C. The major adjustment lattice point numbers (a total of the screen. DO NOT COPY PJ750 Adjustment operations (reference) 86% operation 43% operation 29% operation Adjustment 00 point 0 14 29 43 86 100 Input signal (%)...
Service Manual
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... color and color difference meter is used, the [A](delta) mode is used) 1. Then adjust [MAX] tone [G]. Temporarily set the slide switch on the front panel. ViewSonic Corporation 8 6. This completes the adjustments required for adjustment point [No. 10] and adjust [No. 10] and [G:] so that they are as follows. Adjust the illuminance...-P GAMMA LEVEL MIN MID MAX Adjust Tone menu ON I ,ttt< X - -(7 H/3 IIt >tr: H/6 _(:)_ _ _ 11 V/3 A V/6 v CI$ : R Adjustment procedure 1 (when a color differential meter is convenient. DO NOT COPY PJ750
... color and color difference meter is used, the [A](delta) mode is used) 1. Then adjust [MAX] tone [G]. Temporarily set the slide switch on the front panel. ViewSonic Corporation 8 6. This completes the adjustments required for adjustment point [No. 10] and adjust [No. 10] and [G:] so that they are as follows. Adjust the illuminance...-P GAMMA LEVEL MIN MID MAX Adjust Tone menu ON I ,ttt< X - -(7 H/3 IIt >tr: H/6 _(:)_ _ _ 11 V/3 A V/6 v CI$ : R Adjustment procedure 1 (when a color differential meter is convenient. DO NOT COPY PJ750
Service Manual
Page 12
... and adjust [No. 10] [R:] and [B:] so that [G] color adjustment tolerance is decreased. Now adjust the [MAX] tone for [MAX] tone [G]. 9. ViewSonic Corporation 9 CONFIDENTIAL -- Select [No. 2] [G:]. On the other hand, if [R:] is more intense than measurement point [No. 1], and raise the intensity of...as described in number order to [No. 17] and adjust their color coordinates starting in which case [R:] is required.) 2. DO NOT COPY PJ750 If [R:] is to solid white. 12.Adjust the color coordinates of the color point whose [G] color is more intense than measurement point [...
... and adjust [No. 10] [R:] and [B:] so that [G] color adjustment tolerance is decreased. Now adjust the [MAX] tone for [MAX] tone [G]. 9. ViewSonic Corporation 9 CONFIDENTIAL -- Select [No. 2] [G:]. On the other hand, if [R:] is more intense than measurement point [No. 1], and raise the intensity of...as described in number order to [No. 17] and adjust their color coordinates starting in which case [R:] is required.) 2. DO NOT COPY PJ750 If [R:] is to solid white. 12.Adjust the color coordinates of the color point whose [G] color is more intense than measurement point [...
Service Manual
Page 15
... DC FAN (EXHAUST) What is the state of LAMP Blinks indicator D302? NG Set the LAMP COVER OK Is the LAMP connection? DO NOT COPY PJ750 L (OV) Lirn't SW (PWB ass'y SW) ViewSonic Corporation 12 CONFIDENTIAL -- And check TSW short or open?
... DC FAN (EXHAUST) What is the state of LAMP Blinks indicator D302? NG Set the LAMP COVER OK Is the LAMP connection? DO NOT COPY PJ750 L (OV) Lirn't SW (PWB ass'y SW) ViewSonic Corporation 12 CONFIDENTIAL -- And check TSW short or open?
Service Manual
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... Infinity Measure the resistancne of TH950 on the PWB ass'y SENSOR at the(Dof 1303 on (INTAKE NB) the PWB ass'y Main. DO NOT COPY PJ750 Not light Is the voltage at L817 on the PWB ass'y Main NO set to "L" during warming- Does lamp light? Light Lamp Not Light Is... LAMP indicator during operation? Not light Light Change the lamp. "L" = OV DC FAN H (3.3V) Measure sure voltage at disconnecting E302. about 10kO PWB ass'y Main ViewSonic Corporation 13 CONFIDENTIAL --
... Infinity Measure the resistancne of TH950 on the PWB ass'y SENSOR at the(Dof 1303 on (INTAKE NB) the PWB ass'y Main. DO NOT COPY PJ750 Not light Is the voltage at L817 on the PWB ass'y Main NO set to "L" during warming- Does lamp light? Light Lamp Not Light Is... LAMP indicator during operation? Not light Light Change the lamp. "L" = OV DC FAN H (3.3V) Measure sure voltage at disconnecting E302. about 10kO PWB ass'y Main ViewSonic Corporation 13 CONFIDENTIAL --
Service Manual
Page 17
the RGB signal is input Check at operating mode Are signal input at pins '2) , ,C) ,0') of NO E101 on the PWB Power unit (circuit) ass'y Main? (2) (TP46): +14V YES (TP47): +17V 0C) (TP48): +6V (TP49): +4.3V PWB ass'y Main LCD Panel ViewSonic Corporation 14 CONFIDENTIAL -- PWB ass'y Signal YES C),0 : (TP1R) : R signal (4),© : (TP1G) : G signal (7),(0) : (TP1B) : B signal 0,6 : (TP1H) : H sync 0,0 : (TP1V) : V sync Are voltage input at each pin of NO E800 on the PWB ass'y Main? DO NOT COPY PJ750
the RGB signal is input Check at operating mode Are signal input at pins '2) , ,C) ,0') of NO E101 on the PWB Power unit (circuit) ass'y Main? (2) (TP46): +14V YES (TP47): +17V 0C) (TP48): +6V (TP49): +4.3V PWB ass'y Main LCD Panel ViewSonic Corporation 14 CONFIDENTIAL -- PWB ass'y Signal YES C),0 : (TP1R) : R signal (4),© : (TP1G) : G signal (7),(0) : (TP1B) : B signal 0,6 : (TP1H) : H sync 0,0 : (TP1V) : V sync Are voltage input at each pin of NO E800 on the PWB ass'y Main? DO NOT COPY PJ750
Service Manual
Page 18
YES Oe : S-CIN • : S-YIN : Composite video PWB ass'y Signal PWB ass'y Main LCD module ass'y ViewSonic Corporation 15 CONFIDENTIAL -- DO NOT COPY PJ750 YES C) (TP46): +14V C) (TP47): +17V ® (TP48): +6V (5) (TP49): +4.3V Power unit (circuit) Are signal input at pins of EV01 on the PWB ass'y Main? Picture is not displayed when the VIDEO Signal is input I Check at operating mode A e voltage input at these pins of NO E800 on the NO PWB ass'y Main?
YES Oe : S-CIN • : S-YIN : Composite video PWB ass'y Signal PWB ass'y Main LCD module ass'y ViewSonic Corporation 15 CONFIDENTIAL -- DO NOT COPY PJ750 YES C) (TP46): +14V C) (TP47): +17V ® (TP48): +6V (5) (TP49): +4.3V Power unit (circuit) Are signal input at pins of EV01 on the PWB ass'y Main? Picture is not displayed when the VIDEO Signal is input I Check at operating mode A e voltage input at these pins of NO E800 on the NO PWB ass'y Main?
Service Manual
Page 19
No sound ) Check at operating mode Are signal input at each pin of EV01 on the PWB ass'y Main? 10 12 13 14 NO GND RDP TDP YES : TXD O : RXD PWB ass'y Signal PWB ass'y Main ViewSonic Corporation 16 CONFIDENTIAL -- YES © : Audio(L) : Audio(R) PWB ass'y Signal PWB ass'y Main Speaker Can not control to RS-232C ) Check at operating mode Pin No 1 RS-232C 2 3 6 SELO 7 RTS 9 A e the signals input at these pins of EV01 on the NO PWB ass'y Main? DO NOT COPY PJ750
No sound ) Check at operating mode Are signal input at each pin of EV01 on the PWB ass'y Main? 10 12 13 14 NO GND RDP TDP YES : TXD O : RXD PWB ass'y Signal PWB ass'y Main ViewSonic Corporation 16 CONFIDENTIAL -- YES © : Audio(L) : Audio(R) PWB ass'y Signal PWB ass'y Main Speaker Can not control to RS-232C ) Check at operating mode Pin No 1 RS-232C 2 3 6 SELO 7 RTS 9 A e the signals input at these pins of EV01 on the NO PWB ass'y Main? DO NOT COPY PJ750
Service Manual
Page 20
DO NOT COPY PJ750 Speaker Wire from Speaker ViewSonic Corporation 17 CONFIDENTIAL -- AssemblyRemoval, Replacement, andMaintenance • Cautions when removing the PWB ass'y Main When removing the PWB ass'y Main, there is danger of the ...
DO NOT COPY PJ750 Speaker Wire from Speaker ViewSonic Corporation 17 CONFIDENTIAL -- AssemblyRemoval, Replacement, andMaintenance • Cautions when removing the PWB ass'y Main When removing the PWB ass'y Main, there is danger of the ...
Service Manual
Page 21
... filter removed. •When the air filter is clogged with a vacuum cleaner. • Switch power OFF and remove the power cord from the power outlet. 2. ViewSonic Corporation 18 CONFIDENTIAL -- DISTRIBUTOR .4> • Do not disassemble the unit because replacement of separate parts is switched OFF automatically to you. SUPPLIER G Panel Return Replacement... message appears on the screen and the power supply is not possible. • For repairs of the product, please contact our distributor. DO NOT COPY PJ750 Clean the air filter with dust etc.
... filter removed. •When the air filter is clogged with a vacuum cleaner. • Switch power OFF and remove the power cord from the power outlet. 2. ViewSonic Corporation 18 CONFIDENTIAL -- DISTRIBUTOR .4> • Do not disassemble the unit because replacement of separate parts is switched OFF automatically to you. SUPPLIER G Panel Return Replacement... message appears on the screen and the power supply is not possible. • For repairs of the product, please contact our distributor. DO NOT COPY PJ750 Clean the air filter with dust etc.