Service Manual
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.... LG RD-JT40/41 Service Manual RD-JT40/RD-JT41 SERVICE MANUAL C a u tio n Be sure to read cautionary item s described in this m anual before servicing. Projector D sription...6 5. D M D Im age S ecification...34 14. Tim ing C har...33 13. Assy D raw ing ...85 1 Specifications...2 2. Rm ote Control D esription...9 6. W hen replace the lam p, to avoid burns to yor fingers. Do not touch the exhaust fan, during operation. O peration...13 8. Spare Parts...
.... LG RD-JT40/41 Service Manual RD-JT40/RD-JT41 SERVICE MANUAL C a u tio n Be sure to read cautionary item s described in this m anual before servicing. Projector D sription...6 5. D M D Im age S ecification...34 14. Tim ing C har...33 13. Assy D raw ing ...85 1 Specifications...2 2. Rm ote Control D esription...9 6. W hen replace the lam p, to avoid burns to yor fingers. Do not touch the exhaust fan, during operation. O peration...13 8. Spare Parts...
Service Manual
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... name Model name Personal Projector RD-JT40 1024*768XGA RD-JT41 800*600SVGA Optical Display system 1-CHIP DMD Lens F/Number F/2.6 Lamp 210W NSH lamp Electrical Power supply AC100 ~ 240V, 3.5A, 50/60 Hz (Automatic) Power consumption 330 W (Max) Mechanical Dimensions 308mm/12in (W) x 95mm/3.7in (H) x 238mm/9.4in (D) Operating temperature range 10 C ~ 40 C Weight 6.9 lbs (3.1 Kg) Input terminal Computer input RGB input D-sub 15-pin (female) Video signal input S-VIDEO Mini DIN 4-pin port x1 VIDEO HDTV signal input RCA...
... name Model name Personal Projector RD-JT40 1024*768XGA RD-JT41 800*600SVGA Optical Display system 1-CHIP DMD Lens F/Number F/2.6 Lamp 210W NSH lamp Electrical Power supply AC100 ~ 240V, 3.5A, 50/60 Hz (Automatic) Power consumption 330 W (Max) Mechanical Dimensions 308mm/12in (W) x 95mm/3.7in (H) x 238mm/9.4in (D) Operating temperature range 10 C ~ 40 C Weight 6.9 lbs (3.1 Kg) Input terminal Computer input RGB input D-sub 15-pin (female) Video signal input S-VIDEO Mini DIN 4-pin port x1 VIDEO HDTV signal input RCA...
Service Manual
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... S-Video cable 50.72920.011 PC audio cable 50.74405.501 Soft carrying case 98.J3402.001 HDTV cable 50.J2401.001 USB mouse cable 50.73213.501 Remote control 3-2 converter 98.J3401.001 22.91007.011 Optional Accessories (not included in the Standard Package) Description of parts Part No. Mac adapter (switchable) 20.20118.A15 Spare lamp module 60.J3416.CB1 3 LG RD-JT40/41 Service Manual Service Information...
... S-Video cable 50.72920.011 PC audio cable 50.74405.501 Soft carrying case 98.J3402.001 HDTV cable 50.J2401.001 USB mouse cable 50.73213.501 Remote control 3-2 converter 98.J3401.001 22.91007.011 Optional Accessories (not included in the Standard Package) Description of parts Part No. Mac adapter (switchable) 20.20118.A15 Spare lamp module 60.J3416.CB1 3 LG RD-JT40/41 Service Manual Service Information...
Service Manual
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Shipping Contents The Projector is shipped with the cables required for connection to standard PC or laptop computers. DX660 ASSY UPPER CASE P896 DS660/LG PCBA KEYPAD BD DX660 ASSY SUB U/C P896 DS660/LG ASSY LAMP MODULE U DX660 ASSY DOOR LAMP P838 DX660/LG ASSY MANU+WARRANTY LG ASSY REMOTE+CABLE LG DXS660 REMOTE CONTROLLER DXS660 LG SOFT CASE DXS660 LG 3. LG RD-JT40/41 Service Manual Parts No 55.J3405.001 55.J3408...
Shipping Contents The Projector is shipped with the cables required for connection to standard PC or laptop computers. DX660 ASSY UPPER CASE P896 DS660/LG PCBA KEYPAD BD DX660 ASSY SUB U/C P896 DS660/LG ASSY LAMP MODULE U DX660 ASSY DOOR LAMP P838 DX660/LG ASSY MANU+WARRANTY LG ASSY REMOTE+CABLE LG DXS660 REMOTE CONTROLLER DXS660 LG SOFT CASE DXS660 LG 3. LG RD-JT40/41 Service Manual Parts No 55.J3405.001 55.J3408...
Service Manual
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... contrast/brightness settings. 5. Remote Control Description 9 Push the buttons to release the adjuster. 2. LG RD-JT40/41 Service Manual The projector is equipped with laser pointer/ remote mouse function Hight quality manual zoom lens One-key auto-adjustment to display the best picture quality Easy digital keystone correction through hot keys to correct distorted images Adjustable color balance control for data/video display Ultra-high brightness projection lamp Ability to display 16.7 million colors On-screen menus...
... contrast/brightness settings. 5. Remote Control Description 9 Push the buttons to release the adjuster. 2. LG RD-JT40/41 Service Manual The projector is equipped with laser pointer/ remote mouse function Hight quality manual zoom lens One-key auto-adjustment to display the best picture quality Easy digital keystone correction through hot keys to correct distorted images Adjustable color balance control for data/video display Ultra-high brightness projection lamp Ability to display 16.7 million colors On-screen menus...
Service Manual
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Installing or Replacing Batteries 10 The distance between the sensor and the remote control should not exceed 6 meters. LG RD-JT40/41 Service Manual The remote control sensors are located in the front/ back of the projector.
Installing or Replacing Batteries 10 The distance between the sensor and the remote control should not exceed 6 meters. LG RD-JT40/41 Service Manual The remote control sensors are located in the front/ back of the projector.
Service Manual
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LG RD-JT40/41 Service Manual 6. Width (cm/in ) D. Width (cm/in ) C. The projector is capable of accepting HDTV data through a YPBPR connector. Height (cm/in ) A. Use a HDTV cable that came with your projector to "Menu System" on page 13 for information on the HDTV OSD selections. 12 Screen Size (Max.) Diagonal (cm/in ) L. Height (cm/in) 77/30.4 61.8/24 46.3/18 100...
LG RD-JT40/41 Service Manual 6. Width (cm/in ) D. Width (cm/in ) C. The projector is capable of accepting HDTV data through a YPBPR connector. Height (cm/in ) A. Use a HDTV cable that came with your projector to "Menu System" on page 13 for information on the HDTV OSD selections. 12 Screen Size (Max.) Diagonal (cm/in ) L. Height (cm/in) 77/30.4 61.8/24 46.3/18 100...
Service Manual
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LG RD-JT40/41 Service Manual 7. OPERATION Start Up 1. Press POWER to start the unit. Turn on (When the power is turned off, there is a 60-second cooling period before the projector can be re-started.) 4. The back-lit POWER key flashes green and stays green when the power is turned on the main power switch. 3. Switch on all connected equipment. 14 Plug the power cord into a wall socket. 2.
LG RD-JT40/41 Service Manual 7. OPERATION Start Up 1. Press POWER to start the unit. Turn on (When the power is turned off, there is a 60-second cooling period before the projector can be re-started.) 4. The back-lit POWER key flashes green and stays green when the power is turned on the main power switch. 3. Switch on all connected equipment. 14 Plug the power cord into a wall socket. 2.
Service Manual
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... the control panel of the projector or on the remote control, and then adjust the sliding bar labeled Keystone, as needed. Press + to correct keystoning at either the top or bottom. Within 3 seconds, the built-in Intelligent Auto Adjustment function will re-adjust settings to optimize the picture quality. Auto Adjustment In some cases, you may need to provide the best picture quality. 15 LG RD-JT40/41 Service Manual Digital Keystone Correction Keystoning...
... the control panel of the projector or on the remote control, and then adjust the sliding bar labeled Keystone, as needed. Press + to correct keystoning at either the top or bottom. Within 3 seconds, the built-in Intelligent Auto Adjustment function will re-adjust settings to optimize the picture quality. Auto Adjustment In some cases, you may need to provide the best picture quality. 15 LG RD-JT40/41 Service Manual Digital Keystone Correction Keystoning...
Service Manual
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... and Traditional Chinese. Keystone hold When selected, preserves the last mirror correction value even when the projector is activated. Video Mode Selects video mode. Selects a desired OSD position. Auto off Sets the length of time before the system is shut off when Blank is restarted. The range is detected. LG RD-JT40/41 Service Manual 4. OSD OSD Pos. Three modes are available: Default (BOXLIGHT logo), black screen and blue screen.
... and Traditional Chinese. Keystone hold When selected, preserves the last mirror correction value even when the projector is activated. Video Mode Selects video mode. Selects a desired OSD position. Auto off Sets the length of time before the system is shut off when Blank is restarted. The range is detected. LG RD-JT40/41 Service Manual 4. OSD OSD Pos. Three modes are available: Default (BOXLIGHT logo), black screen and blue screen.
Service Manual
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... two minutes automatically before POWER is not properly shut down or during the two-minute cooling process. Press POWER and a warning message will detect this and cool the lamp for approximately two minutes. 3. To turn off the main power switch. 4. Disconnect the power cord from the wall socket. Shutdown 1. The fan will continue to protect the lamp, the system will appear. POWER again. LG RD-JT40/41 Service Manual 8.
... two minutes automatically before POWER is not properly shut down or during the two-minute cooling process. Press POWER and a warning message will detect this and cool the lamp for approximately two minutes. 3. To turn off the main power switch. 4. Disconnect the power cord from the wall socket. Shutdown 1. The fan will continue to protect the lamp, the system will appear. POWER again. LG RD-JT40/41 Service Manual 8.
Service Manual
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.... Lamp LED Indicators Lamp Life Indicators The Lamp is not properly attached The temperature is still red when turning the power on, please contact your dealer. LG RD-JT40/41 Service Manual 9. If the LAMP indicator is too high When the LED lights up red. MAINTENANCE Lamp Information Use and Replacement of lamp replacement, please install a new lamp or consult your dealer. 23 Replace the projection lamp with a new one immediately. Caution The LAMP indicator will light up red or a message appears suggesting the time of the Lamp When the lamp Indicator lights up...
.... Lamp LED Indicators Lamp Life Indicators The Lamp is not properly attached The temperature is still red when turning the power on, please contact your dealer. LG RD-JT40/41 Service Manual 9. If the LAMP indicator is too high When the LED lights up red. MAINTENANCE Lamp Information Use and Replacement of lamp replacement, please install a new lamp or consult your dealer. 23 Replace the projection lamp with a new one immediately. Caution The LAMP indicator will light up red or a message appears suggesting the time of the Lamp When the lamp Indicator lights up...
Service Manual
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LG RD-JT40/41 Service Manual 10. Lamp Replacement Caution To reduce the risk of electrical shock, always turn off the projector and disconnect the power cord before changing the lamp 24
LG RD-JT40/41 Service Manual 10. Lamp Replacement Caution To reduce the risk of electrical shock, always turn off the projector and disconnect the power cord before changing the lamp 24
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... cool for further help. 25 The internal temperature is warning you replace the lamp after 1500hours of operation, please follow the instructions below within 10 minutes of injuries to internal components, use caution when removing lamp glass that has shattered into sharp pieces. Turn off the projector and contact qualified service personnel for at least 45 minutes before replacing the lamp. LG RD-JT40/41 Service Manual Caution To reduce...
... cool for further help. 25 The internal temperature is warning you replace the lamp after 1500hours of operation, please follow the instructions below within 10 minutes of injuries to internal components, use caution when removing lamp glass that has shattered into sharp pieces. Turn off the projector and contact qualified service personnel for at least 45 minutes before replacing the lamp. LG RD-JT40/41 Service Manual Caution To reduce...
Service Manual
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... sure nothing is running the auto image adjustment function. OUT OF LAMP USAGE TIME. Toggle the power switch to improve its angle on . YOU HAVE TO CHANGE THE LAMP! Make sure the power cord is inserted snuged into the power outlet. Press Auto on the control panel of the projector. Description Projector is turned off after the projector is searching for 1400 hours. LG RD-JT40/41 Service Manual 11. Adjust the brightness and contrast. Ensure...
... sure nothing is running the auto image adjustment function. OUT OF LAMP USAGE TIME. Toggle the power switch to improve its angle on . YOU HAVE TO CHANGE THE LAMP! Make sure the power cord is inserted snuged into the power outlet. Press Auto on the control panel of the projector. Description Projector is turned off after the projector is searching for 1400 hours. LG RD-JT40/41 Service Manual 11. Adjust the brightness and contrast. Ensure...
Service Manual
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...) No Image NG? (Freezing) No Image NG? (Missing column bar) No Image NG? (Screen overlap) 1.Check DMD board Yes 2.Check color wheel and Sensor board 3.Check DMD conductive elastomers 4.Check Main and Translation boards 1.Check color wheel and Sensor board Yes 2.Check DMD board 3.Check Main and Translation boards 1.Check DMD board Yes 2.Check color wheel and Sensor board Yes 1.Check color wheel 2.Check Sensor board color index signal Yes 1.Check DMD holder Yes 1.Check Main and Translation boards 2.Check DMD board 28 LG RD-JT40/41 Service Manual 2.
...) No Image NG? (Freezing) No Image NG? (Missing column bar) No Image NG? (Screen overlap) 1.Check DMD board Yes 2.Check color wheel and Sensor board 3.Check DMD conductive elastomers 4.Check Main and Translation boards 1.Check color wheel and Sensor board Yes 2.Check DMD board 3.Check Main and Translation boards 1.Check DMD board Yes 2.Check color wheel and Sensor board Yes 1.Check color wheel 2.Check Sensor board color index signal Yes 1.Check DMD holder Yes 1.Check Main and Translation boards 2.Check DMD board 28 LG RD-JT40/41 Service Manual 2.
Service Manual
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... Trouble Shooting Guide Check power voltages. If everything else verified, but still no image, perform the following checks: Check DMD voltages at 120 Hz If no color wheel spinning, check data transfer on the following lines: MTRDATA, MTRCLK, MTRSELZ. Set curtain mode to appropriate type if problems with getting LAMPLIT appear. 3.5 seconds after microcontroller last reset. See Software ICD for reset waveform. LG RD-JT40/41 Service Manual 6. Verify these signals meet TI specified timing...
... Trouble Shooting Guide Check power voltages. If everything else verified, but still no image, perform the following checks: Check DMD voltages at 120 Hz If no color wheel spinning, check data transfer on the following lines: MTRDATA, MTRCLK, MTRSELZ. Set curtain mode to appropriate type if problems with getting LAMPLIT appear. 3.5 seconds after microcontroller last reset. See Software ICD for reset waveform. LG RD-JT40/41 Service Manual 6. Verify these signals meet TI specified timing...
Service Manual
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... Reflective Edge is light that is not used then the Microsoft Paintbrush values must be inspected from the edge of the DMDs window aperture onto the projection screen. All areas of the screen are colored a Microsoft Paintbrush gray 10 (green, red, and blue set at 10). Projector degamma shall be determined under the following projected image test conditions: a. g. The projected image shall be adjusted to match the...
... Reflective Edge is light that is not used then the Microsoft Paintbrush values must be inspected from the edge of the DMDs window aperture onto the projection screen. All areas of the screen are colored a Microsoft Paintbrush gray 10 (green, red, and blue set at 10). Projector degamma shall be determined under the following projected image test conditions: a. g. The projected image shall be adjusted to match the...
Service Manual
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... data (SDA) Video & Component Input 1 2 3 4 5 6 Composite input Component input Pi Definition Pi Definition Pi Definition 1 Composite 2 Audio input (left 3 Audio input (right video input channel) channel) 4 Luminance 5 B-Y Chroma input 6 R-Y Chroma input video input 3.5 mm phone plug is used for DDC1/2B protocol 5 6 0 5 Pin Definition 1 Red video 5 Return +5 Volt Supply 9 (Mandatory Supply) 13 Horizontal Sync Pin Definition Pin Definition Pin 2 Green Video 3 Blue Video 4 6 Red Video Return 7 Green Video Return 8 10 Sync. LG RD-JT40/41 Service Manual...
... data (SDA) Video & Component Input 1 2 3 4 5 6 Composite input Component input Pi Definition Pi Definition Pi Definition 1 Composite 2 Audio input (left 3 Audio input (right video input channel) channel) 4 Luminance 5 B-Y Chroma input 6 R-Y Chroma input video input 3.5 mm phone plug is used for DDC1/2B protocol 5 6 0 5 Pin Definition 1 Red video 5 Return +5 Volt Supply 9 (Mandatory Supply) 13 Horizontal Sync Pin Definition Pin Definition Pin 2 Green Video 3 Blue Video 4 6 Red Video Return 7 Green Video Return 8 10 Sync. LG RD-JT40/41 Service Manual...
Service Manual
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LG RD-JT40/41 Service Manual (C) Optical Check Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 User OSD setting: (PC), 30 gray Final Check Step Screen Check Items 1.Brightness 100% W Pattern ANSI Lumens Uniformity 2.Contrast Ratio Checker Board ANSI C/R R Pattern G Pattern Chromaticity Coordinate x, y Chromaticity Coordinate x, y B Pattern Chromaticity Coordinate x, y 3.Color 4.DMD 100% W Chromaticity Coordinate x, y Pattern Uniformity 50% W Pattern Chromaticity Coordinate x, y Uniformity Blue 180 Dark Blemish Pattern Dark...
LG RD-JT40/41 Service Manual (C) Optical Check Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 User OSD setting: (PC), 30 gray Final Check Step Screen Check Items 1.Brightness 100% W Pattern ANSI Lumens Uniformity 2.Contrast Ratio Checker Board ANSI C/R R Pattern G Pattern Chromaticity Coordinate x, y Chromaticity Coordinate x, y B Pattern Chromaticity Coordinate x, y 3.Color 4.DMD 100% W Chromaticity Coordinate x, y Pattern Uniformity 50% W Pattern Chromaticity Coordinate x, y Uniformity Blue 180 Dark Blemish Pattern Dark...