Optoma GT750 Service Manual Download Page 6

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GT750

Confidential

1-2

Item

Description

Input Connections

● V��-in: V��-in x 1 (R�B)
● Composite video: Composite Video x 1
● �-video: Mini-DIN � pin x 1
●

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x 1

● RC� �udio in: RC� �udio in x 2 (R �� L)
● HDMI: HDMI v1�� (compatible with video and audio)

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Temperature

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● Non-operation (storage): -1�°C~ ��°C

�ltitude

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1-2 Compatible Mode

Computer Compatibility (Analog/Digital)

Compatibility

Resolution

V-Sync [Hz]

H-Sync [KHz]

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Summary of Contents for GT750

Page 1: ...SERVICE MANUAL Prepare Check Approve Date Revise Version Description 2011 08 01 V1 0 Initial Issue Mina Amy GT750 ...

Page 2: ...ustomers will appreciate the service that you offer them This manual is for technicians and people who have an electronic background Please send the product back to the distributor for repairing and do not attempt to do anything that is complex or not mentioned in the troubleshooting Notice The information found in this manual is subject to change without prior notice Any subsequent changes made t...

Page 3: ...2 3 Re write Lamp Usage Hour 2 4 Repair Action 2 5 Chapter 3 Troubleshooting LED Lighting Message For Projector 3 1 Main Procedure 3 2 Chapter 4 Function Test Alignment Procedure Test Equipment Needed 4 1 Test Condition 4 1 I O Port Test 4 2 Run In Test 4 8 Test Inspection Procedure 4 9 ADC Calibration 4 10 Restore Blower Speed 4 11 Chapter 5 Firmware Upgrade Section 1 System Firmware Upgrade 5 1 ...

Page 4: ...51 Firmware Upgrade Procedure 5 4 Check 8051 FW version 5 5 Section 3 MST8535 Firmware FW Upgrade Procedure 5 6 Equipment Needed 5 6 USB Driver Upgrade Procedure 5 7 MST8535 Firmware Upgrade Procedure 5 9 Chapter 6 EDID Upgrade EDID Upgrade Procedure 6 1 Appendix A Exploded Image I Appendix B Serial Number Definition I PCBA Code Definition II ...

Page 5: ...CO Mode Typ 255W Max 280W 110VAC 8 Throw ratio 0 72 Distance Width 9 Projection lens YM43 F 2 55 f 10 19 mm 10 Lamp life 2500 Hours Standard 230W 50 Survival Rate Normal Mode 4000 Hours Typical 190W 50 Survival Rate ECO Mode 11 Offset 112 4 5 12 Video compatibility NTSC NTSC M J 3 58 MHz 4 43 MHz PAL PAL B D G H I M N 4 43 MHz SECAM SECAM B D G K K1 L 4 25 4 4 MHz Component 480i p 576i p 720p 50 6...

Page 6: ... Altitude Operating 0 2 500 ft for 5 C 40 C 2500 ft 5 000 ft for 5 C 30 C 5 000 ft 10 000 ft for 5 C 25 C 1 2 Compatible Mode Computer Compatibility Analog Digital Compatibility Resolution V Sync Hz H Sync KHz PAL SECAM 640 x 350 31 5 70 640 x 350 37 9 85 640 x 400 37 9 85 1 720 x 400 31 5 70 720 x 400 37 9 85 VGA 640 x 480 31 5 60 640 x 480 67 640 x 480 37 9 72 8 640 x 480 37 5 75 SVGA 800 x 600 ...

Page 7: ...1366x768 60 1440x900 55 935 60 1680 x 1050 60 UXGA 1600 x1200 75 60 HDTV 1920 x 1080 33 8 30 1920 x 1080i 50 1920 x 1080i 60 1920 x 1080p 24 1920 x 1080p 25 1920 x 1080p 30 1920 x 1080p 50 1920 x 1080p 60 1280 x 720 45 60 1280 x 720p 50 1280 x 720p 60 SDTV 720 x 576i 50 720 x 576p 50 720 x 480i 60 720 x 480p 60 Note If the Computer Compatibility supportive signal is different from User s Manual pl...

Page 8: ... Screw Bit 107 3 Screw Bit 107 4 Hex Sleeves 5 mm 5 Tweezers 6 Projector Before you start This process is protective level II Operators should wear electrostatic chains Note If you need to replace the main board you have to record the lamp usage hour Some related contents please refer to common SM chapter 2 ...

Page 9: ... wire tube 5 pin C System Fan Compose of Red Yellow Black Wire 3 pin D Photo Sensor Compose of Red Black White Wire and Black wire tube 3 pin E Blower Compose of Black Yellow Red Wire and Blue wire tube 3 pin F IR Compose of Black Yellow Red Wire and Gray wire tube 3 pin Disassemble Main Board Please refer to the below table details of each connector on Main Board A G F E D C B ...

Page 10: ...screen to white screen Adjust the screws on the engine module to readjust the image screw 1 should be adjusted first and then screw 2 Adjust until the yellowish or bluish parts disappeared 3 Abnormal image inspection It should not have any abnormal color at the rim of the image by estimating through the eyes Note To avoid over adjusting the rod After the operation please use the glue to fix the sc...

Page 11: ...s Normal Use up or down buttons to select Lamp Hours Normal then use left or right buttons to re write the Lamp Hours 3 Re write Lamp Hours ECO The way of re write Lamp Hours ECO is the same as Lamp Hours Normal 4 Exit Service Mode Use up or down buttons to select Exit then press Enter to exit the Service Mode Note left key decrease lamp hour right key increase lamp hour ...

Page 12: ...re EDID System Firmware Update v v v chapter 5 section 1 Color Wheel Index v v Chapter 4 3 1 7 OSD Reset v v v Chapter 4 5 2 Video Calibration v v v v Chapter 4 6 VGA Calibration v v v v Chapter 4 6 EDID v Chapter 6 Re write Lamp Hours Usage v Chapter 2 4 Video Performance v v v chapter4 3 3 Restore Blower Speed v v v v Chapter 4 7 Optical Performance Measure v Chapter 4 3 1 ...

Page 13: ...D Red Standby State Input power cord Red Power on Warming Flashing Green Power on and Lamp lighting Green Power off Cooling Flashing Green Error Lamp failed Flashing Red Red Error Fan failed Flashing Red Flashing Red Error Over Temp Flashing Red Red Note 3 1 LED Lighting Message No light Steady light ...

Page 14: ...mp Temp LED lights red Check Thermal Switch Check Fan Check Main Board c Fan Fail Temp LED Flashes red Check Fan Check Main Board 2 3D Image Abnormal Ensure the using 3D glasses is good and you must face the projection Ensure the CD in DVD is HQFS format or the graphic card from PC can support 3D format Ensure your standing distance is less than 6m from screen Ensure the 3D function is on and exec...

Page 15: ...uipped Component Composite S Video and HDMI HDTV Source 720P 1080P 1080i Minolta CL 100 Quantum Data 802B or CHROMA2327 Color Video Signal Pattern Generator 4 2 Test Condition Circumstance brightness Dark room less than 2 lux Product must be warmed up for 3 minutes Screen size 60 inches diagonal Zone Definition Figure Zone A as green line Definition ...

Page 16: ...t or left arrow key to adjust the value to minimize video flicker Adjust Resync or Frequency Tracking H Position V Position to the inner screen Inspection item Eliminate visual wavy noise by Resync Frequency or Tracking selection Check if there is noise on the screen Horizontal and vertical position of the video should be adjustable to the screen frame Criteria If there is noise on the screen the ...

Page 17: ... 100 Criteria The dark blemish should be no more than 7 under white pattern Adjacent pixels are unacceptable Ref Defect specification table 4 Bright Blemish Procedure Test equipment video generator Test signal analog 1280x800 60Hz Test Pattern gray 10 Inspection item Bright blemish check Criteria The bright blemish should be no more than 4 under gray 10 pattern Ref Defect specification table 5 Dar...

Page 18: ...0 65 M via visual to check the focus look at the entire screen focus shall be clear crisp and sharp over the entire surface of the display pat tern Blur word on one of the corner after adjust ment is acceptable However the word should at least be recognizable 7 Color Performance Procedure Test equipment video generator Test signal 1280 x 800 60Hz 1080i Test Pattern Master 64 gray RGBW Please get i...

Page 19: ... 8 Optical Performance Inspection Condition Environment luminance 2 Lux Product must be warmed up for 5 minutes Distances from the screen 0 8M Screen Size 60 inches diagonal a Measure setting Procedure Please get into OSD menu select Lamp Setting under Options press Enter button then select Bright of Bright mode Press Power Left Left Menu to get into service mode Test equipment Select Spoke Test b...

Page 20: ...Uniformity Procedure Full white pattern Use CL100 to measure brightness values of P1 P9 see image full white Follow the Uniformity formula to calculate average values Uniformity Formula JBMA Uniformity Avg P1 P3 P7 P9 P5 100 Criteria 70 4 3 2 Composite Port and Audio Test Procedure Test equipment DVD Player Test signal CVBS Inspection item Audio performance test Inspection Distance 0 46M 0 56M Cri...

Page 21: ...from speaker 4 3 4 Component Port Test Procedure Test equipment DVD player Test signal Ycbcr YPbPr Inspection item HDTV performance test Inspection Distance 0 46M 0 56M Criteria Check any abnormal color line distortion or any noise on the screen 4 3 5 HDMI Port Test Procedure Test equipment DVD Player with HDMI output Test signal 720p 1080p 1080i Inspection item HDMI performance test Inspection Di...

Page 22: ...down 6 hours Get into Burn In Mode Cycle setting is based on the defect symptoms ie If it is NFF the run in time is 4 hours You have to set the lamp on for 50 min and lamp off for 10 min for 4 cycles 4 3 6 3D Test Procedure Test equipment 1 DVD Player PS3 HQFS format CD or 2 PC with 3D Graphic card Test signal 1080p 24Hz for 3D movie 720p 60HZ for 3D game Inspection item 3D test Inspection Distanc...

Page 23: ...e version All firmware version must be the latest version TB implementation Related TB must be implement Cosmetic Cosmetic can not be broken Logo Missing logo missing prints and blurry prints are unacceptable Lamp cover It should be locked in the correct place Zoom in out The function should work smoothly Keypad All keypad buttons must operate smoothly 2 OSD Reset After final QC step we have to er...

Page 24: ...riteria If there is noise on the screen the product is consid ered as failure product The screen appears normal it shouldn t appear any abnormal condition such as lines and so on Check if the projection is same as monitor displayed 2 Video Calibration Note After replacing main board or upgrading firmware the Video calibration should be done Procedure Test equipment video generator 1 Test signal 48...

Page 25: ...on then Plug in the power cord and press power button when the temp LED and lamp LED lighted red loosen left button 2 Wait a moment please get into service mode to check the Blower Factory RPM as Picture A shown Note If the Factory FAN RPM Value doesn t show in service mode please repeat the step again Make sure the Blower Factory RPM is 3500 6600 Picture A ...

Page 26: ...V10 0 Firmware img library library 10 0 Hardware Projector Power Cord 42 50115G001 RS232 Cable 9PIN to 9PIN 42 85H02G001 PC or Laptop Note1 we will show the hot key of service mode and how to check FW version the other contents please refer to common service manual 5 1 Note2 During FW upgrade procedure please select 32KB in Skip Boot Loader Area ...

Page 27: ...wer LED will flash green then loosen the POWER button Connect projector with PC by RS232 cable Note The system fan and the lamp will not operate 5 1 3 Check FW version 1 Power on the projector and get into the Service Mode Press Power Left Left Menu 2 The firmware version will be shown as red circle on the screen ...

Page 28: ... 2 8051 FW Upgrade 5 2 1 Equipment Needed Software N79A901R USB Setup _NLINK_en Manley USB Driver_NLINK xxx_8051_xx hex Hardware Projector Power cord 42 50115G001 USB Cable mini USB to USB A 42 00284G001 NLINK Fixture PC or Laptop ...

Page 29: ...te NLINK program 3 Choose the right type of MCU MCU Choose picture will appear on the screen select N79A901R Click OK 4 Program settings Ensure NLlNK Fixture and PC is securely connected the indicator lights on green and the state is Connect as blue square Select Brownout Level 3 8V as green square Select Internel RC 11 0592MHz as green square Click Erase Write W to execute 8051 FW upgrade as red ...

Page 30: ...GT750 Confidential 5 5 2 3 Check 8051 FW version 1 Power on the projector and get into the Service Mode Press Power Left Left Menu 2 The firmware version will be shown as red circle on the screen ...

Page 31: ...35 Firmware FW Upgrade Procedure 5 3 1 Equipment Needed Software GT750 MST8535 FW file BIN Debug Board Driver ISP_Tool V4 4 9 0 exe Hardware Projector GT750 Debug Board 75 8GA01GR01 USB cable 42 00281G102 VGA Cable 42 00200G004 Monitor PC ...

Page 32: ...cable is special the PN is 42 00200G004 The position of fixture s pin as right picture shown 2 Insert another side of the VGA cable and power cable into projector 3 Press power button and power on the projector 2 Execute Program 1 Found New Hardware Wiszard picture will appear on the screen 2 Select Install from a list or specific location Advanced 3 Click Next 1 3 2 ...

Page 33: ...e search then click Browse 5 Browse For Folder picture will appear on the screen 6 Select FTC100103 MSTAR folder then click OK 7 Click Finish Note If the PC appear Found New Hardware Wiszard picture again repeat step 2 to install USB Drivier once more 4 5 6 7 ...

Page 34: ... Mode Press Power Left Left Menu then select MST Download ON 2 Unzip the FTC100103 MSTAR zip and double click ISP_Tool_4_4_9_5 exe 3 Choose Config icon then do the settings as right picture show 4 Choose Connect icon then a small window will show Device Type is Win25Q16 and click OK ...

Page 35: ...uto icon and do the Download Setting then click to Start Download When Download Finish the green character Pass will show 7 After firmware upgrade enter the Service Mode Press Power Left Left Menu then the firmware version will be shown as red circle on the screen Download Setting Start Download Download Finish ...

Page 36: ...er 6 EDID Upgrade 6 1 EDID Upgrade Procedure The upgrade procedure for VGA and HDMI ports please refer to common service manual chapter 6 Please use EDID 0 81 exe Program and Key in the serial number into the Unit No blank space ...

Page 37: ...GT750 Confidential Note This chapter is only designed to show the exploded image of the projector For updated part numbers please refer to RSPL report Appendix A Exploded Image D C ...

Page 38: ...1 8EG03G111 LAMP COVER BLACK EX615 LGSM 7 61 00018G003 LOCK SCREW PAN MECH M3 8 5 3 5 BLACK 1018 HEAT TREATMENT 8 SP 8MY01GC01 LAMP MODULE FOR PROJECTOR GT750 V 9 41 87F04G001 EMI TAPE L25 W16 10 85 1A123G050 SCREW PAN MECH M3 5 Ni 11 85 60426G090 SCREW HEX ZN M2 6 L9MM 12 61 8EG03G001 TOP SHIELDING HD20 13 85 0A122G030 SCREW DOUBLE FLAT MECH M2 3Ni 14 85 1A323G080 SCREW PAN MECH M3 8 BLACK GREEN ...

Page 39: ...ription Parts Supply 1 75 8EG01G143 TOP COVER ASSEMBLY EW533ST BLACK LGSM V 2 51 8EG14G111 KEYPAD PLATE ENTER EX612 LGSM 3 80 8MY03G001 PCBA KEYPAD BD FOR GT750 WXGA PROJECTOR V 4 85 1A123G050 SCREW PAN MECH M3 5 Ni Assy TOP COVER MODULE ...

Page 40: ...GT750 Confidential IV 2 3 4 5 13 18 12 16 10 14 15 9 7 8 6 1 11 ASSY BOTTOM COVER MODULE ...

Page 41: ...AN MECH M4 5 COLOR W TOOTH WASHER Cr3 9 61 87340G001 STAND OFF M3 4L D8 0 2100MP 10 51 8EG20G001 230W LVPS MYLAR PC T 0 43 HD20 11 70 8EG14G001 ASSY 4520 BLOWER MODULE HD20 12 49 8GZ01G001 SPEAKER 5W 8ohm Zylux V 13 85 WA123G060 SCREW PAN TAP M3 6 Ni 14 51 8EG05G001 IR FRONT BOTTOM HOLDER MN3600H BLACK 15 80 88N05G001 PCBA IR BOARD FOR EP721 16 85 1F123G060 SCREW PAN MECH W SF M3 6 Ni GREEN 17 42 ...

Page 42: ...GT750 Confidential VI ASSY MAIN BOARD AND IO BOARD MODULE ...

Page 43: ...Y IO COVER MODULE 8MY BLACK SER VICE V 4 41 8MY02G001 ADUIO I O PORT EMI GASKET W13 H3 L13mm diameter 6 5mm 5 41 85Y04G002 EMI GASKET S VIDEO S VIDEO W18 H0 35 L17 mm 6 41 8EF02G001 I O GASKET W16 5 L18 H0 35MM DIAMETER 14 5MM 7 51 8EG10G051 STAND OFF H 6 0 M2 M3 L6 Sn EP910 8 85 005AGG408 SCREW HEX I O 4 40 H4 L8 NI NYLOK 9 86 0A123G024 HEX NUT M3 5 5 0 5P L2 4 Ni 10 85 1A123G050 SCREW PAN MECH M...

Page 44: ...GT750 Confidential VIII Item P N Description Parts Supply 1 80 8MY01G001 PCBA MAIN BOARD FOR GT750 WXGA PRO JECTOR V 2 80 8MY06G001 PCBA DAUGHTER BD FOR GT750 WXGA PRO JECTOR V ASSY MAIN BOARD MODULE ...

Page 45: ...GT750 Confidential IX ASSY OPTICAL ENGINE MODULE ...

Page 46: ...cB V 9 52 8CP01G011 DMD RUBBER EX615 10 52 8CP02G001 DMD BOARD RUBBER X1161 11 85 4A826G118 STEP SCREW FOR TYPEX DMD M2 6 11 8mm X15 12 52 8CP04G001 S450 0 55 XGA SVGA DMD thermal pad FUJIPO LY Sarcon XR HE 18 4x12 5x0 5 mm 13 70 8HA01G001 ASSY ENGINE BASE ES533ST 14 61 8CP02H002 DMD HEATSINK AL ALLOY Z15 X1161 15 70 8FB19G001 ASSY COLOR WHEEL MODULE EX762 16 61 8EF03G001 CONDENSER LIGHT STOP EX61...

Page 47: ...1 61 8CP03G011 CW HOLDER SECC 4220 2 80 8LM04G001 PCBA PHOTO SENSOR BOARD FOR EW762 PRO JECTOR V 3 23 8EF19G001 YO 6S R81Y41G84C31W52B71_HE3 CW 4 85 1A526G060 SCREW PAN MECH M2 6 6 Ni NYLOK 5 51 82Y29G001 TAPE 3M J350 10 5mm FOR COLOR WHEEL DP715 6 52 83615G001 COLOR WHEEL DISC RUBBER EzPro755 7 61 83628G001 COLOR WHEEL SHOULDER SCREW EzPro755 ...

Page 48: ...onfidential XII ASSY BlOWER MODULE Item P N Description Parts Supply 1 49 8EF04G001 SUNON 45 20mm GB1245PKVX 8 F TYPE BLOWER V 2 52 89T01G001 BLOWER AIR TIGHT F12 H5350 3 52 82G08G001 BLOWER 4520 RUBBER EP7190 ...

Page 49: ...11 7020 FAN SHIELDING EX542 3 61 8EG11G001 LAMP BLOWER DUCT HD20 4 85 1A123G080 PAN SCREW M3 8 FOR YM 64 FRONT CELL SP 5 85 1A123G060 SCREW PAN MECH M3 6 NI 6 43 8EG17G001 THERMAL SWITCH WITH BRACKET KLIXON YS11 HD20 100C V 7 85 1A123G040 SCREW PAN MECH M3 4 Ni 8 51 81540G001 TAPE 3M J350 17 60mm 9 41 8EF01G001 EMI GASKET W5 H4 L80m 1 8 9 2 6 7 3 5 4 ...

Page 50: ...GT750 Confidential XIV A K ...

Page 51: ...CABLE POWER CORD 1 8M SP30 IS14 US V SP 8MY02GC01 INFRARED REMOTE CONTROL FOR GT750 Black V 12 45 8MY01G001 INFRARED REMOTE CONTROL GT750 Black V 13 57 00001G001 PACK SIO2 DRIER 20g 14 51 00027G003 PE BAG ZIPPER 33cm 25cm SIZE GREEN FOR OPTOMA 15 36 8HA02G001 QUICK START CARD MULTILINGUAL EX523ST EW533ST 16 36 8MY01G001 USER S GUIDE MULTILINGUAL CD GT750 V 17 36 00024G001 WARRANTY CARD US FOR LPP ...

Page 52: ...Project Code 3 0 Last number of the manufacture year ex 2011 1 4 15 week of the manufacture year ex the fifteenth week of the year 15 5 AAAAA not defined 6 C Manufacture factory CPC 7 0001 Serial Code EX Q8MY115AAAAAC0001 This label Q8MY115AAAAAC0001 represents the serial number for GT750 It is produced at CPC on fifteenth of 2011 Its serial code is 0001 ...

Page 53: ...GT750 Confidential II II PCBA Code Definition PCBA Code for Projector A B XXXXXXXXXX C XXX EEEE 1 2 3 4 5 6 1 ID 2 Vendor Code 3 P N 4 Revision 5 Date Code 6 S N ...

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Optoma GT750, Service Manual, Page: 6 / 53

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