LG RD-JT50 Service Manual

LG RD-JT50 - LG XGA DLP Projector Manual

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  • LG RD-JT50 | Service Manual - Page 1
    DLP PROJECTOR SERVICE MANUAL MODEL RD-JT50/51/52 CAUTION BEFORE SERVICING THE PROJECTOR, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
  • LG RD-JT50 | Service Manual - Page 2
    8. Appearance Description 16 9. Alignment Procedure 17 10. How to assemble the set 38 11. FAQ (Frequently Asked Questions) 48 12. Trouble Shooting Guide 49 13. Service Adjustment Guide 61 14. Firmware upgrade procedure 72 15. RS232 Codes 76 16. Schematics of JT51 81 Schematics of
  • LG RD-JT50 | Service Manual - Page 3
    õó
  • LG RD-JT50 | Service Manual - Page 4
  • LG RD-JT50 | Service Manual - Page 5
    JT51 Technical Specifications Note: All specifications are subject to change without notice General Product name Model name Personal Projector RD-JT51 800*600 SVGA Optical Display system Lens F/Number Lamp Electrical Power supply Power consumption Mechanical Dimensions Operating temperature range
  • LG RD-JT50 | Service Manual - Page 6
    Technical Specifications Note: All specifications are subject to change without notice General Product name Model name Personal Projector RD-JT50 1024*768 RD-JT52 1024*768 XGA XGA Optical Display system Lens F/Number Lamp Electrical Power supply Power consumption Mechanical Dimensions Operating
  • LG RD-JT50 | Service Manual - Page 7
    4. Exploded View The illustration shows exploded view of JT 51 projector. You can see the major components and optical engine. Lens Fan Board Main Board Chip Board AC cable Balleat Lamp Box Rear Fan Module é
  • LG RD-JT50 | Service Manual - Page 8
    ASSY POWER MODULE PB6100 26 65.J5003.001 4778V00084B FOOT ADJ DX850 27 44.J3401.091 3890V01751H CTN 440*435*260 JT50/LG 28 49.J8602.002 3828VA0413G MANUAL USER LG RD-JT51 PB6100 29 27.01018.000 6410VWH015A CORD H05VV-F 13A250V 1830MM U 30 27.01418.041 6410VWH051L CORD H05VV3G 16A 250V S-AFRI
  • LG RD-JT50 | Service Manual - Page 9
    EUR BLK 33 50.72920.011 6851V00021L C.A MIN-DIN 4P S-VIDEO W/S 15 34 50.J1303.501 6851V00021S CABLE RCA Y/Y 1600MM BLK 35 50.J2403.501 6851V00021H SIGNAL/C 15/15P (-9) 2500MM 36 56.26J86.011 6710V00106B REMOTE CTR JT51 SVGA (LG)-CR1 LG RD-JT50 99.J7677.L88 NO. BenQ P/N 1 60.J5016.CB1 2 55.J7612
  • LG RD-JT50 | Service Manual - Page 10
    44 50.J2403.501 4778V00084B FOOT ADJ DX850 3890V01751H CTN 440*435*260 JT50/LG 3920V00533E CUSHION RIGHT EPE JT50 3880VA0026B BAG CARRY JT50 3828VA0413F MANUAL USER LG RD-JT5052 6851V00021L C.A MIN-DIN 4P S-VIDEO W/S 15 6851V00021G CABLE 4P USB A-B 1800MM BLACK 6851V00021S CABLE RCA Y/Y 1600MM BLK
  • LG RD-JT50 | Service Manual - Page 11
    3680V00116G PROJECTION LENS ZOOM JT50 ASI 6871VSN271B IC DMD 0.7XGA DDR 12 3580V00094H ASSY DOOR JT50 4810V00854C ASSY LAMP BOX JT50 6871VSN257G PCB 1L SENSOR JT50/LG 3920V00533E CUSHION RIGHT EPE JT50 3880VA0026B BAG CARRY JT50 3828VA0413F MANUAL USER LG RD-JT5052 6851V00021L C.A MIN-DIN 4P S-VIDEO
  • LG RD-JT50 | Service Manual - Page 12
    1. JT51 6. Block Diagram D_SUB I2C Analg Flat Panel Interface AD9883 RGB888 signals Control Signals I2C YUV 422 Control Signals Clock signal Image Processor PW166 I2C EEPROM Address Flash Data S-Video RCA RGB 888 Signals I2C Control Signals 12
  • LG RD-JT50 | Service Manual - Page 13
    2. JT50/52 13
  • LG RD-JT50 | Service Manual - Page 14
    1. JT51 7. Packaging Description 14
  • LG RD-JT50 | Service Manual - Page 15
    2. JT50/52 15
  • LG RD-JT50 | Service Manual - Page 16
    8. Appearance Description 16
  • LG RD-JT50 | Service Manual - Page 17
    9. Alignment Procedure JT51 1. DMD Bias Voltage Alignment Equipment: None Procedure: Watch DMD “Bias Voltage Bin” Label (Example: 8060-7bbc DDDD XXXXXXX M) Switch the DIP switch (SW2) on Main board according to the red character on the DMD chip 3.00: E 01: D ON 10: C 11: B 0 0 17
  • LG RD-JT50 | Service Manual - Page 18
    and repeat the above procedures again. 3. PC Color Alignment Procedure Equipment: Pattern generator Procedure: 1. Connect power, D-sub, into projector. 2. Change pattern generator to pattern 43 5-DISC. 3. Light on projector90 4. Enter factory mode. 5. Choose ADC Brightness item to Press. 6. Choose
  • LG RD-JT50 | Service Manual - Page 19
    coordinate spec: Osram lamp Oshio lamp x0 0.281 0.01 1. Connect power, YPbPr Video into projector. 2. Change Timing and pattern of pattern generator : 3. Timing : 480P(H:31.54 KHz,V:60.08 Hz) 4. pattern : black 5. Light on projector 6. Set user
  • LG RD-JT50 | Service Manual - Page 20
    JT50/52 1. DMD Bias Voltage Alignment Equipment: -None Procedure: 11. Watch DMD chip Label (Example: 9477000 0234B) 12. Switch the DIP switch on DMD board according
  • LG RD-JT50 | Service Manual - Page 21
    DLP Brightness DLP Change the input to pure green and repeat the above procedures again. 3. Formatter board check procedure Equipment: - Pattern generator Procedure: 1. Connect power, D-sub, into projector. 2. Light on projector. 3. Testing below patterns and resolution is 1024*768@60Hz (XGA
  • LG RD-JT50 | Service Manual - Page 22
    4. DMD Panel Alignment Equipment: - Pattern Generator Procedure: 1. Connect power, Video signal into projector. 2. Light on projector 3. Change pattern generator to full white pattern. 4. Watch the image if any pixel lost 5. Change pattern to full black. 6. Watch the image if any pixel lost 7.
  • LG RD-JT50 | Service Manual - Page 23
    9 4 Assy HSG DMD HSG DMD, HSG and HSG CW CW into Lower case Rotate CW Assemble Projection Lens Assemble HSG DMD PL contact Screw Driver(M3) for PL Screw Driver for HSG_DMD Assemble HSG CW 5 Alignment and Chk CW rotation CW adjustment Assemble CVR_DMD_HSG Align Light Pipe and Glue on it Screw
  • LG RD-JT50 | Service Manual - Page 24
    Remove ENG_CVR Adjust “Club 9” position until BB within spec Glue to fix the “Club 9” C/W delay adjust and Engine Test “Club 9” adjustment fixture and glue. Sensor and Oscilloscope Final Check Step 1.Brightness Screen 100% W Pattern Check Items ANSI Lumens Uniformity 2.Contrast Ratio Checker
  • LG RD-JT50 | Service Manual - Page 25
    or S-Video, into projector. 2. Change Timing and pattern of pattern generator: 3. Timing: NTSC (H: 15.73 KHz, V: 29.96 Hz) 4. Pattern: gray 32 (or gray16 only for over-scan) 5. Light on projector 6. Set user OSD values to default. 7. Enter factory mode. 8. Set Factory values to default. 9. Adjust
  • LG RD-JT50 | Service Manual - Page 26
    Change Timing and pattern of pattern generator: Timing: NTSC (H: 15.73 KHz, V: 29.96 Hz) Pattern: 100% blue 2. Adjust Gamma Index and Red/Green/Blue Gamma to fit mars video I. Offset adjustment: 1. Black coordinate spec: Osram lamp Oshio lamp X0 0.281 0.01 0.313 0.01 Y0 Video into projector. 26
  • LG RD-JT50 | Service Manual - Page 27
    Change Timing and pattern of pattern generator: Timing: 480P (H: 31.54 KHz, V: 60.08 Hz) Pattern: Black 6. Light on projector 7. Set user OSD values to default. 8. Enter factory mode. 9. Set Factory values to default. 10. Follow the PbPr offset adjustment flow chart: Example: If use the Osram lamp
  • LG RD-JT50 | Service Manual - Page 28
    x0 =.281 x =.271 dx=.01 1/2dx=0.005 inc. Pb y0 =.311 y =.311 x0 =.281 x =.276 y =.316 dec. Pr y0 =.311 x =.281 y =.311 II. Gray Level: 1. Change Timing and pattern of pattern generator: Timing: 480P (H: 31.54 KHz, V: 60.08 Hz) Pattern: gray 32 (or gray16 only for over-scan) 2. Adjust the
  • LG RD-JT50 | Service Manual - Page 29
    . 2. Change Timing and pattern of pattern generator: Timing: 800x600@60Hz (H: 37.879Khz, V: 60.317Hz) Pattern: gray 32 3. Light on projector 4. Adjust user OSD values to default. 5. Enter factory mode. 6. Adjust Factory values to default. 7. Adjust the Brightness of AD9883 (RGB) to let the black
  • LG RD-JT50 | Service Manual - Page 30
    Change Open Factory OSD and set the factory default value: 6. User the lux meter and adjust Red Gain, Green Gain, & after lamp is on. 3. UUT should be placed be 1024*768 @65Hz (XGA); 800*600@60Hz (SVGA) Video input of UUT. 6. Connect S terminal to S-Video input of UUT. 7. Connect AC power cord
  • LG RD-JT50 | Service Manual - Page 31
    Color Smear Linearity Jitter, Swing, Snack, Ring, Cross-talk PT976 Gray & Color 64Gray & Check Color PT863 EM Character Text Movie Video Essential PAL (H: 15.63KHz, PT2 Gray 25Hz, I) Master Pattern H&V Res. Color Smear Linearity Jitter, Swing, Snack, Ring, Cross-talk Criteria
  • LG RD-JT50 | Service Manual - Page 32
    Swing, Not Acceptable Snack, Ring, Cross-talk PT976 Gray & Color 64 Step 64Gray & Check Color PT863 EM Character EM distinguish Text Movie Video Essential PAL (H:15.63KHz, PT2 Gray 0-100% 25Hz, I) Master Pattern H&V Res. 1 Line Color Hue, Sat need correct Smear Not acceptable
  • LG RD-JT50 | Service Manual - Page 33
    , Swing, Not Acceptable Snack, Ring, Cross-talk PT976 Gray & Color 64 Step 64Gray & Check Color PT863 EM Character EM Clear Text Movie Video Essential 720p PT2 Gray 0-100% (H: 45.00KHz, Master Pattern H&V Res. 2 Line 60Hz, p) Color Hue, Sat need correct Smear Not acceptable
  • LG RD-JT50 | Service Manual - Page 34
    (B) PC EE Check: Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 Channel Prime Timing Pattern Item Criteria Mode DSB * 1024*768@85Hz PT5 Gray 0-100% (68.677KHz, SMPTE 3 H&V Res. 1 Line 84.997Hz) Color Hue, Sat need correct Smear Not acceptable Linearity As optical spec
  • LG RD-JT50 | Service Manual - Page 35
    Jitter, Swing, Snack, Ring, Cross-talk 640*400@85Hz PT2 Gray (43.269KHz, Master Pattern H&V Res. 85.008Hz) Color Smear Linearity Jitter, Swing, Snack, Ring, Cross-talk 800*600@60Hz PT2 Gray (37.879KHz, 60.317Hz) Master Pattern H&V Res. Color Smear Linearity Jitter, Swing, Snack,
  • LG RD-JT50 | Service Manual - Page 36
    % 2 Line Hue, Sat need correct Not acceptable As optical spec Not Acceptable (C) Optical Check Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 User OSD setting: (PC), 30 gray Step 1.Brightness Final Check Screen Check Items Acceptance Criteria ANSI Lumens 100% W Pattern Uniformity >=450@PC
  • LG RD-JT50 | Service Manual - Page 37
    4.Zoom / Focus Ring CHK Functionality 5.CFM Measure Air Flow Inspection Acceptance Criteria C315 Shinning and No Stuck Adjustable Adjustable >= TBD CFM 6.PC 7.Video (RCA, S-Video) SMPTE133 Pattern Color Ramp Pattern Phone Lady picture Static pattern (SMPTE133 Pattern) Dynamic movie (Toy Story
  • LG RD-JT50 | Service Manual - Page 38
    . After you replace the lamp module, you should reset the lamp hour counter. The switch interrupts power supply output to the projector if you remove the lamp cover. WARNING Allow the projector to cool before removing the lamp module. The lamp module becomes very hot when the projector is in use. DO
  • LG RD-JT50 | Service Manual - Page 39
    3. Grasp the handle on the lamp module and pull the module out of the lamp box. 2. Covers 1. Remove 5 screws of lower case first. 2. Remove 1 screw of each side panel 3. Be sure to remove one wire of keypad board, then the upper case can be removed. íç
  • LG RD-JT50 | Service Manual - Page 40
    4. Then you can remove side panel as well. 5. Remove 2 jack screws of rear cover, be sure to remove 2 wires as well. Then you can take out rear cover. The rear cover includes rear fan module. ìð
  • LG RD-JT50 | Service Manual - Page 41
    3. Power Module 1. Remove 4 screws and then take out top mylar. 2. Remove 6 wires, then you can take out fan board. 3. Remove one long screw and one short screw, then the whole power module can be removed. 4ï
  • LG RD-JT50 | Service Manual - Page 42
    4. Power module includes power board and fan board, they can’t be separated Fan Board Power Board 4. Ballast 1. Remove 4 screws ( 2 black screws and 2 sliver screws) and one wire. 2. Then you can take out ballast as below. ìî
  • LG RD-JT50 | Service Manual - Page 43
    5. Main board 1. Remove one black screw of BKT and then take out it. 2. Remove 2 black screws and two wires(one is for chip board’s connector, the other is for AC cable’s wire) ìí
  • LG RD-JT50 | Service Manual - Page 44
    3. Remove 4 wires from main board, then take out main board. 4. Remove 4 screws on the main board module, then you can take out main board. ìì
  • LG RD-JT50 | Service Manual - Page 45
    6. Blower 1. Remove one black screw and then blower can be removed from projector. 2. Remove 2 screws of blower module and then take out blower. 7. Optical engine 1. Remove 3 sliver screws and then optical engine can be removed. ìë
  • LG RD-JT50 | Service Manual - Page 46
    2. Remove 4 screws on the heat sink and then can see chip board and DMD chip. DMD Chip Chip board 3. Remove 4 screws and then lens can be removed. ìê
  • LG RD-JT50 | Service Manual - Page 47
    8. Color wheel 1. Remove 2 black screws of color wheel holder. 2. Remove 5 screws of color wheel module. 9. EMI board 1. Remove 2 long screws, one black screw and one wire. ìé
  • LG RD-JT50 | Service Manual - Page 48
    the unit to improve its angle on the screen. 2) Use the Keystone correction key on the control panel of the projector or the remote control unit. 4. Poor color 1) Select the correct video system. 2) Adjust brightness, contrast, or color. 5. Blurred image 1) Press Auto on the control panel of the
  • LG RD-JT50 | Service Manual - Page 49
    JT51 1. Optical Engine 12. Trouble Shooting Guide No. Item Trouble Shooting Guide 1.Change lamp 1 Brightness 2.Check overfill size: If overfill too large, re-install SL and AL to ensure correct position 1. If Uniformity is within 3% of spec: Change lamp 2 Uniformity 2. Check FM
  • LG RD-JT50 | Service Manual - Page 50
    image when graphics is the current input No Yes No image when video is the current input Yes No Unable to download Yes No Unable U25-5,40MHz) 4.chk U17 whether S/W inside or bad soldering 5.change U22(bad soldering) 6.chk Reset IC (U14) 7.chk Abnormal signal 8.chk Resetz(RN25-5),Poweron(RN25
  • LG RD-JT50 | Service Manual - Page 51
    3. DMD Driver Start Yes Power Voltage No 1.chk J702,2.5V(4,,5,6),5V(3),12V(1) 2.chk bead L710-L714,L44 Yes 1.LAMPEN Signal to chip from U29(RN40,RN45) Yes 3.chk data sequence from U29 to FPC(RN37~RN44) 4.chk JP2,JP3 soldering Lamp On 1.chk CWINDEX No 2.chk LAMPEN 3.chk LAMPLIT ëï
  • LG RD-JT50 | Service Manual - Page 52
    4. Smaller boards FAN/BD No Fan control: 1.chk the voltage of QF1 (5,6,7,8) 2.chk the fan voltage U502(2,15),U503(8) 3.check Y501(32.768kHz) No 5V 1.Check Q701 & thermal Breaker Yes Keypad function Yes LED dark 1.chk LED voltage from J1 No 2.chk the mounting direction of LEDs No work 1.
  • LG RD-JT50 | Service Manual - Page 53
    5. PFC BOARD 6. DC-DC BOARD ëí
  • LG RD-JT50 | Service Manual - Page 54
    JT50/52 1. Final Assembly Trouble Shooting Guide ëì
  • LG RD-JT50 | Service Manual - Page 55
    ëë
  • LG RD-JT50 | Service Manual - Page 56
    2. Engine Assembly Trouble Shooting Guide ëê
  • LG RD-JT50 | Service Manual - Page 57
    3. Main Block Trouble Shooting Guide S yste m n o w ork N o d a ta s ig n a l ou tput to D M D BD T h e im a g e d is p la y "N o S ig n a l" w h e n th e in p u t is PC T he gho st Im ag e d is p la y o u tp u t o f V id e o
  • LG RD-JT50 | Service Manual - Page 58
    4. Power Supply Trouble Shooting Guide PFC BOARD DX850 DC-DC BOARD ëè
  • LG RD-JT50 | Service Manual - Page 59
    5. DMD Block Trouble Shooting Guide 5ç
  • LG RD-JT50 | Service Manual - Page 60
    êð
  • LG RD-JT50 | Service Manual - Page 61
    JT51 13. Service Adjustment Guide 1. How to enter factory menu: 1) Hold press "UP" button until the "Lamp hours info." OSD display on button-right of screen (Fig-1) (Fig-1) Lamp Hours Info 2) Press keypad and key simultaneously again, then enter Factory menu. 2. Factory layer: 1)
  • LG RD-JT50 | Service Manual - Page 62
    In PC mode default value set 10, in Video mode is 0.Software auto set this value as source find. 3. DLP Brightness: adjust DLP Brightness. default setting is 36.Do not change this value . 4. DLP Contrast: adjust DLP Contrast. Default setting is 30. Do not change this value. 5. Burn-In Hour: set how
  • LG RD-JT50 | Service Manual - Page 63
    3.1) PbPr: enter PbPr color control Layer. When Source is YPbPr (Never Change these setting) (Note these values Before Upgrade Software) PbPr G Offset: combine with user osd brightness in YPbPr PbPr G Gain: combine with user osd contrast in YPbPr PbPr R Offset: offset of color red PbPr G Offset
  • LG RD-JT50 | Service Manual - Page 64
    11500 G: gain of color green while color temp is 11500 11500 B: gain of color blue while color temp is 11500 3.3) PC 9300 and Video 9300: 9300K submenu. (Never Change these setting) PC 9300 R: gain of color red while PC color temp is 9300 PC 9300 G: gain of color green while PC color
  • LG RD-JT50 | Service Manual - Page 65
    layer Interpolation: De-interlace Mode Filter: system auto select Filter. Lamp Hour: value to tell you lamp usage hours. Usage Hour: value to tell you unit usage hours. Fac Lamp Hours: Record all of the amp usage hours Data Reset: Reset all data to default include factory assign value. Never try to
  • LG RD-JT50 | Service Manual - Page 66
    Gamma index: system auto select DLP gamma index Gray value: adjust Lamp: Lamp sensor temperature T3-Blwr: Blower sensor temperature F1-Lamp: Lamp fan speed in RPM F2-Blst: Blaster fan speed in RPM F3-Blwr: Blower fan speed in RPM Manual Fan Speed: Change fan speed by manual. SOG Threshold: Change
  • LG RD-JT50 | Service Manual - Page 67
    (Fac7 Submenu) (This menu only for control testing) JT50/52 Activating factory menu I. Press and hold keypad Up key for 5 seconds to enter Lamp Life Info state. II. Press keypad Menu and Source key simultaneously to activate Factory Menu. Factory menu details I. DMD menu êé
  • LG RD-JT50 | Service Manual - Page 68
    In PC mode default value set 10, in Video mode is 2. Software automatically sets this value as source found. DLP Brightness: sets DLP Brightness. Default setting is 32. Do not change this value. DLP Contrast: sets DLP Contrast. Default setting is 32. Do not change this value. Burn-In Hour: sets how
  • LG RD-JT50 | Service Manual - Page 69
    signal). 6500K: color settings for 6500K color temperature. PC 9300K: color settings for RGB/DVI 9300K color temperature. Video 9300K: color settings for YCbCr/S-Video/Comp Video 6500K color temperature. 11500K: color settings for 11500K color temperature. Mode info detailed: for debug only IV. Test
  • LG RD-JT50 | Service Manual - Page 70
    menu Gamma index: sets DLP degamma index. Filter: sets filter settings. User Lamp Hour: lamp usage hours used by user. Resetable via Lamp Info Page. Fac Lamp Hour: lamp usage hours. Non-resetable. Usage Hour: tells unit usage hours. Data Reset: resets all data to default factory assigned values. VI
  • LG RD-JT50 | Service Manual - Page 71
    /tachometer values for lamp sensor. T1-Blower: temperature and fan speed/tachometer values for blower sensor. Manual Fan Speed: Off for normal operation. On for thermal engineering. FanCal is for blower fan engineering calibration. SOG Threshold: for debugging only. Never change this value. More
  • LG RD-JT50 | Service Manual - Page 72
    14. Firmware Upgrade Procedure JT51 Step 1 Setup Flashupgrader in computer. Step 2 a. Connect download cable with computer and projector b. Connect power cord with projector and check power switch is OFF. Step 3 Execute Flashupgrader.exe Step 4 Setting COM Port & Baud Rate éî
  • LG RD-JT50 | Service Manual - Page 73
    Step 5 a. Turn on the power switch of the projector, then the Program will target the Flash. b. HEX File Format choose Intel Extended c. File Name choose d. Operation choose Program Step 6 Start download firmware éí
  • LG RD-JT50 | Service Manual - Page 74
    Step 7 Download finished. Step 8 Turn off the power switch. éì
  • LG RD-JT50 | Service Manual - Page 75
    3. Power down the projector and turn the power switch off after cooling. 4. Hook up the projector to the COM port on the PC with JT50/JT52 download cable. 5. should be restored. Calibration procedure 1. Use any video pattern generator to output XGA 60Hz PC timing with 32 grayscale pattern. Enter
  • LG RD-JT50 | Service Manual - Page 76
    00 46 CE Ratio BE EF 02 06 00 04 C6 Force PC BE EF 02 06 00 AE C6 Force Video BE EF 02 06 00 51 C6 Force S-Video BE EF 02 06 00 80 C7 Force YPbPr BE EF 02 06 00 B3 C7 RS232 Power ON BE EF
  • LG RD-JT50 | Service Manual - Page 77
    S-Video / Composite Video Picture Controls Command Brightness + Brightness Contrast + Contrast Color + Color Tint + Tint Sharpness + Sharpness - Packet Header (7 bytes) BE EF 03 19 00 E9 18 BE EF
  • LG RD-JT50 | Service Manual - Page 78
    BF E5 Lower-Center BE EF 03 19 00 2F 24 Lower-Right BE EF 03 19 00 DB 61 PIP Source S-Video BE EF 03 19 00 E8 36 Video BE EF 03 19 00 DA 74 PIP Brightness -50 (48) 0 (126) BE EF 03 19 00 FE 0B BE EF
  • LG RD-JT50 | Service Manual - Page 79
    CC CC Remote Controls Code Keypad Item op Code Model/Byte 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Menu 843 JT50,51 BE EF 3 19 0 BD 82 5 4B 3 0 0 0 0 UP 844 JT50,51 BE EF 3 19 0 97 14 5 4C 3 0 0 0 0 Down 845 JT50,51 BE EF 3 19 0 2 49 5 4D 3 0 0 0 0 Left 846 JT50,51 BE EF 3 19 0 FD AD 5 4E
  • LG RD-JT50 | Service Manual - Page 80
    JT50/52 Command Packet Header (7 bytes) Power On BE EF 03 19 00 83 A9 Power Off BE EF 03 19 00 13 68 4B Select DVI BE EF 03 19 00 58 8A Select YPbPr BE EF 03 19 00 A9 CA Select S-Video BE EF 03 19 00 0B 49 Select Video BE EF 03 19 00 9B 88 Menu BE EF 03 19 00 BD 82 UP BE EF 03 19 00
  • LG RD-JT50 | Service Manual - Page 81
  • LG RD-JT50 | Service Manual - Page 82
    5 4 3 2 D Screw Holes GND 5 9 5 9 5 9 5 9 4 8 4 8 4 8 4 8 3 7 3 7 3 7 3 7 2 6 H1 2 6 H2 2 6 H3 2 6 H4 HO LE-V8 HO LE-V8 HO LE-V8 HO LE-V8 C Optical Points B OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP OP OP OP OP OP OP OP8 OP OP9 OP OP10 OP11 OP12 OP13
  • LG RD-JT50 | Service Manual - Page 83
    1 US1J 5 600UH 1000P K 1000P K 47 2 D7301 10CTQ150S D7302 1 2 SS3H10 CS703 CS704 RS703 47 Q701 J7304 V12 SI4431DY-T1 5V VDD 3 8 LAMP-SYNC 1 2 7 LAMPLIT 2 1 6 R701 5 3 4 D + C7301 + C7303 470U 25V 470U 25V 47K SCL 5 R702 th erm SDA FAN_P 6 7 47 8 L7301 10UH
  • LG RD-JT50 | Service Manual - Page 84
    SMBDATA VCC VCC 15 2 D 3 Q506 FAN4_P RA501 4.7K + C505 22U RB501 16V 2.2K VDD_F Q504 2N3904 1 R509 2.2K R508 2.2K R510 10K 11 ALERT 6 RESET 1 OUT1 10 FG1 9 CLK G768B DXP1 3 DXN 4 DXP2 5 OUT2 FG2 GND GND 16 13 7 8 R514 10K C507 2200P K C508 2200P K VDD_F FANSPIN1 FAN1_B FAN1_E
  • LG RD-JT50 | Service Manual - Page 85
    5 D C B A 5 4 3 2 DD[63:0] MBRST[15:0] DCLK_L DMDSER SACCLK SACBUS SCTRL_L LOADB_LZ TRC_L P3P3V VCC2 GND DD[63:0] MBRST[15:0] DMD_CHIP DD[63:0] MBRST[15:0] DCLK_L DMDSER SACCLK SACBUS SCTRL_L LOADB_LZ P3P3V V CC2 G ND DCLK_L DMDSER SACCLK SACBUS SCTRL_L LOADB_LZ TRC_L P3P3V VCC2 GND DMD_CHIP
  • LG RD-JT50 | Service Manual - Page 86
    5 4 3 2 DD[63:0] DD[63:0] DD[63:0] D J1 2 1 4 3 6 5 8 7 10 9 12 11 14 13 16 15 TP17 18 17 20 19 TP21 BINSEL0 22 21 TP23 BINSEL1 24 23 BI NSEL0 BI NSEL1 P3P3V TP24 26 25 VCC2 P3P3V SACCLK SACBUS SCTRL_L TRC_L TP25 SACCLK SACBUS SCTRL_L TRC_L D D62 D D60 28 30
  • LG RD-JT50 | Service Manual - Page 87
    5 4 DD[63:0] DD[63:0] D MBRST[15:0] MBRST[15:0] U1A MBRST15 MBRST14 MBRST13 MBRST12 MBRST11 MBRST10 MBRST9 MBRST8 MBRST7 MBRST6 MBRST5 MBRST4 MBRST3 MBRST2 MBRST1 MBRST0 Y20 AB20 AA19 AC19 AA17 AC17 Y16 AB16 AB14 Y14 AC13 AA13 AC11 AA11 AB10 Y10 MBRST_15 MBRST_14 MBRST_13 MBRST_12 MBRST_11
  • LG RD-JT50 | Service Manual - Page 88
    SDA FAN_P ECO-MODE 3.3V VDD GND PAGE_2 001_MAIN 3.3V VDD FAN_P ECO-MODE 3.3V VDD 2 FAN_P ECO-MODE 3.3V VDD PAGE_4 003_POWER&LAMP&DETECT 1 A B SDA SCL LAMPLITZ RESETZ SDA SCL SDA SCL GND LAMPEN C D SDA0 SCL0 SD A0 SC L0 DRE[7:0] DGE[7:0] D BE [7 : 0] DRE[7:0] DGE[7:0] DBE
  • LG RD-JT50 | Service Manual - Page 89
    C 014_MEMORY&KEYSTONE PAGE_9 SCL SDA RESETn SCL SDA D[0:15] A[19:1] RESET A0 BHENn VPPEN ROMOEn ROMWEn D E Regect RC1 and RC2 before connect LAMPLITZ LAMPLITZ Note: Lamp on/off detect signal. Note: PW164B RS232 I/O port connect with PC ( for control ) and Ballast ( for lamp stasus ) ECO
  • LG RD-JT50 | Service Manual - Page 90
    5 4 3 2 1 DRE[7:0] D GE [7 : 0] DBE[7:0] D VDD VDD V12_D V12_D 2V5_D 2V5_D VDD_D VDD_D 3.3V_D 3.3V_D GND V12_D 2V5_D VDD_D 3.3V_D 3.3V_D 2V5_D 3.3V_D 2V5_D GND C SR16ADDR0 SR16ADDR1 SR16ADDR2 SR16ADDR3 SR16MODE0 SR16MODE1 SR16SEL0 SR16SEL1 SR16STROBE SR16OEZ SCPDI SCPDO SCPCK
  • LG RD-JT50 | Service Manual - Page 91
    0 R734 0 3.3V VDD LAMPLITZ connected to NPN collection pin CP1 0.1U R5 100KF and R6 change to 0 ohm U52 5 7 4AHC 1G0 8 L: Lamp on 2 1 1 H: Lamp off LAMPLITZ LAMPLITZ 4 L: Lamp on 2 3 2 LAMPLIT MMBT2222A LAMPLIT H: Lamp off 3 Q1 R7 Q4_C 1 1M + C7 22U 25V 2 To repair
  • LG RD-JT50 | Service Manual - Page 92
    A 4 3 2 1 A B C D SCL 14 25 36 OPEN SCL R16 0 SCL SC L0 4 5 6 SW1 2240138001 SCL0 3.3V_D R18 4.7K R19 4.7K TP14 J2 TP15 TP16 3 2 1 GND 20L2021003 1 2 3 SAD SDA OPEN SDA R21 0 SD A0 SDA0 SW1 is the switch to choice DDP1000 I2C would be connected with Pixelwork I2C or
  • LG RD-JT50 | Service Manual - Page 93
    A B C D E VDD VDD 2 2 2 DG4 DG3 DG1 3 3 3 BAV99 BAV99 BAV99 2022014015 1 1 1 G1 L9 TP17 4 TP18 2 1 1 2 1 2 4 6 RED_GND TP19 DG6 1N4148 DG5 1N4148 DG2 1N4148 TP27 11 1 RIN_2 7 GREEN_GND TP20 TP21 RG 21 0 R AI N _C RAIN_C TP28 12 2 GIN_2 TP22 8
  • LG RD-JT50 | Service Manual - Page 94
    SCL SDA 4 VDD A B V33 R60 4.7K R61 4.7K SCL SDA VDD U12 LD1117-3.3V 3 VIN VOUT CA52 VO V33 2 V33 4 CA53 CA54 CA55 CA56 CA57 CA58 CA59 CA60 C300 C301 1 GND 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U TDO A5 LUMA GAIN_V LUMA R56 18 GAIN_V CHROMA CVBS 3 BAI N_V
  • LG RD-JT50 | Service Manual - Page 95
    A 4 OPEN LD1 80 OHM G AI N _C RD1 1.5K RD2 OPEN 3K SOGIN CD1 10P J B VSYNC_C HSYNC GCOAST GBLKSPL A VDD _A D VSYNC_C R47 47 GCOAST GBLKSPL PVDD PVDD C PVDD OPEN PVDD V33 C574 C573 3900P K 39N K REF_A R565 V33 AVDD 1 C77 + CA79 CA80 CB81 CB82 CB83 CB84 22U 0.1U 0.1U 0.1U 0.
  • LG RD-JT50 | Service Manual - Page 96
    1U 3.3V 3.3V 3.3V 7 4AHC 1G 32 5 VCC A1 B2 4Y GND 3 UI3 UI2 A0 BHENn 2 R330 1K C330 4 RB3 47 220P K 3 74V1G 14S UI5 RESET RESET OPEN RB2 47 RESETn RESETn A0 BHENn 2 5 VCC A1 20L2055050 B2 ROMWEn ROMWEn 4Y GND 3 3.3V CP4 25V Z 0.1U GND 7 4AHC 1G 32 1 5 UI1
  • LG RD-JT50 | Service Manual - Page 97
    -10TK VY3 VY4 VY5 Video Port VY6 VY7 VUV0 VUV1 VUV2 VUV3 VUV4 VUV5 VUV6 VUV7 R101 2K R102 2K RESET MCKEXT DCKEXT RESET MCKEXT DCKEXT X700 X701 PORTB5 D10 PORTB6 D11 PORTB7 D12 D13 D14 D15 CPUTMS CPUTCK CPUTDO RD WR BHEN ROMOE ROMWE RAMOE RAMWE CS0 CS1 MODE0 MODE1 MODE2 EXTINT
  • LG RD-JT50 | Service Manual - Page 98
    6 S0 4 S1 1 8 X1 X2 VDD 2 CLK 5 GND 3 ICS501 RD CK R113 22 L29 Z10 68.00129.0D1 DCKEXT DCKEXT GND Y2 16.257MHZ U24_X1 O.S. 3 VCC 8 SDA SCL S01 version I2C bus reversed and Pin8 connected to VDD new version change to 3.3V 3.3V 4 GND 2 C89 0.1U VDD RK4 OPEN 3 OPEN VDD RK7 0
  • LG RD-JT50 | Service Manual - Page 99
    A 4 LED[5:0] 3 K EY [7 :0] KEY8 LED0 LED1 LED2 LED3 RN725 8 7 6 5 120 OHM 1 2 3 4 LED4 8 1 LED5 7 2 6 3 5 4 RN728 120 OHM 8 C N7 0 147 0P 1 KEY0 KEY1 KEY2 KEY3 KEY4 KEY5 KEY6 KEY7 KEY8 RN726 8 7 6 5 8 7 6 5 120 OHM 1 2 3 4 1 2 3 4 RN727 120 OHM C801 470P K 2 7 470P 8 3 6 4
  • LG RD-JT50 | Service Manual - Page 100
    A B C D E 2V5 _D U 2 9E 3 .3 V_D 4 DDP1000 BULK DECOUPLING CAPS DDP1000 DECOUPLING FOR +3.3V DDP1000 DECOUPLING FOR+2.5V 4 3 .3 V_D 3 .3 V_D 3. 3V_ D 3 .3 V_D 2V 5_D 2V 5_D 2V5 _D 2V5 _D 2V 5_D 2V5 _D 2V 5_D AC2 AB17 AB16 P 2P5 V P 2P5 V P 2P5 V P 3P3 V P 3P3 V P 3P3 V
  • LG RD-JT50 | Service Manual - Page 101
    AT A1 F LD AT A0 NC D3 NC B3 3.3V_D C159 0.1U K 3.3V_D FLASH +3.3V DECOUPLING CAPS FL_OE FL_WE FL_CS AD23 AD22 AF24 3.3V_D B4 RESET F6 BYTE GND GND H6 H1 FLASH INTERFACE 3 DD P1 0 0 0-C FL-OEZ FL-WEZ FL-CSZ G1 A4 OE WE F1 CE RY/BY A3
  • LG RD-JT50 | Service Manual - Page 102
    A B C D E 4 3.3V_D Y5 20MHZ RY1 820K UY1 7 OE 6 S0 4 S1 1 8 X1 X2 VDD 2 L16 CLK 5 CK100M R136 GND 3 L27 Z10 IC S50 1 3.3V_D 120 OHM 39.2F MOSC C493 22P J 3.3V_D MOSC C166 10P J C167 10P J 3 4 CWINDEXA CWINDEXA US2 1A VCC 5 2B 3 GND Y4 7 4AHC 1G3 2 VDD_D CWINDEX
  • LG RD-JT50 | Service Manual - Page 103
    A B C D VDRCG R138 R139 R140 10K 10K 10K 4 VDRCG 2 2V5_D 1 + C171 150U 6.3V C172 0.1U C173 0.1U C174 0.1U C175 0.1U VTERM RN31 39 5 4 6 3 7 2 8 1RN33 39 5 4 6 3 7 2 8 1 DQB1 RQ3 RQ2 RQ6 RQ0 RQ1 RQ4 RQ7 REFCLK SCLKN PCLKM DRCGPDZ 2V5_D 2V5_D R143 2 7 6 MULT0 15
  • LG RD-JT50 | Service Manual - Page 104
    A B C D E U29C D D [ 0:6 3] D D[ 0:6 3] ADD[63:0] 4 3 2 A25 D0 D22 D1 DGE[7:0] DRE[7:0] DBE[7:0] DGE[7:0] DGE7 DGE6 DGE5 DGE4 DGE3 DGE2 DGE1 DGE0 DRE[7:0] DRE7 DRE6 DRE5 DRE4 DRE3 DRE2 DRE1 DRE0 D BE [7 : 0] DBE7 DBE6 DBE5 DBE4 DBE3 DBE2 DBE1 DBE0 GND F24 A9 F25 A8 D26 F23 E25 D25
  • LG RD-JT50 | Service Manual - Page 105
    A B C D 4 3.3V_D 3.3V_D TP220 R253 TP217 1K TP218 TP221 U701 TP219 MBRST[0:15] MBRST[0:15] SCPCK SCPDI SCPDO SCPENZ SR16STROBE SR16MODE1 SR16MODE0 56 57 42 SCP_CLK SCPDI SCPDO 58 SCPENZ 15 STORBE 2 MODE1 3 MODE0 OUT15 OUT14 OUT13 79 77 74 OUT12 72 OUT11 69 OUT10 67 OUT09 64
  • LG RD-JT50 | Service Manual - Page 106
    A B C D E 4 3 EXT-ARSTZ MTRSELZ MTRCLK MTRDATA 2 V12_D GND V12_D L19 80 OHM C232 0.1U M C233 0.1U M 1 + C231 22U 25V C234 0.1U M 2 VDD_D ALVDD VDD_D L20 80 OHM C236 0.1U K VDD_D ALVDD C237 0.1U K ALVDD U41 CKMTR1 2 R198 R199 R200 R201 R202 1K 1K 1K 1K 1K 3 5 1 4 R197 39
  • LG RD-JT50 | Service Manual - Page 107
    A B C D E D D[ 0:6 3] D D [ 0:6 3] JP2 2 1 4 3 6 5 8 7 10 9 12 11 VDD 14 13 VDD 16 15 4 18 17 4 20 19 22 21 BINSEL0 BINSEL1 BINSEL0 BINSEL1 24 23 3.3V_D 26 25 VCC2 3.3V_D SAC CLK SACBUS SCTRL-L TRC-L SACCLK SACBUS SCTRL-L TRC-L DD62 DD60 DD58 DD56 28 27
  • LG RD-JT50 | Service Manual - Page 108
    RESETZ LAMPLITZ SCL SDA SCL SDA FAN_P LAMP_P 3.3V VDD GND MAIN 001_MAIN 3.3V VDD FAN_P LAMP_P 3.3V VDD FAN_P LAMP_P 3.3V VDD 2 POWER& LAMP 003_POWER&LAMP&DETECT 1 A B SDA SCL LAMPLITZ RESETZ SDA SCL LAMPLITZ RESETZ SDA SCL SDA SCL GND LAMPEN C D SDA0 SCL0 SD A0 SC L0 DRE
  • LG RD-JT50 | Service Manual - Page 109
    19:1] RESET A0 BHENn D[0:7] D[0:15] A[ 19 : 1 ] RESET A0 BHENn AU DIO_M UT AUDIO_VOL IRR CVR D[0:15] A[19:1] RESET A0 DEN DCLK DHS DVS DEN DCLK Note: To DDP1000 input port LAMPLITZ LAMPLITZ Note: Lamp on/off detect signal. LAMP_P LAMP_P LAMP_P Economy mode switch. 2 FAN_P FAN_P FAN_P
  • LG RD-JT50 | Service Manual - Page 110
    5 DRE[7:0] DGE[7:0] DBE[7:0] D V12_D 2V5_D VDD_D 3.3V_D GND DRE[7:0] DGE[7:0] D BE [7 : 0] V12_D 2V5_D VDD_D 3.3V_D C V12_D 2V5_D VDD_D 3.3V_D 3.3V_D 2V5_D 3.3V_D 2V5_D GND SCL0 SDA0 SC L0 SD A0 SCL0 SDA0 VDD_D 3.3V_D VDD_D 3.3V_D COSC MOSC CWINDEX COSC MOSC CWINDEX COSC MOSC CWINDEX
  • LG RD-JT50 | Service Manual - Page 111
    2 VO 4 1 GND 0.1U 3.3V_D 3.3V_D 3.3V for DDP1000 C9 0.1U LAMPLITZ LAMPLITZ 4 L: Lamp on H: Lamp off LAMPLITZ connected to NPN collection pin and R6 change to 0 ohm. 3 1 2 R7 1M 1 3 2 LAMPLIT MMBT2222A LAMPLIT Q1 Q 4_ C L: Lamp on H: Lamp off + C7 22U 25V 2 25V Z 25V Z To repair
  • LG RD-JT50 | Service Manual - Page 112
    A 4 3 2 1 A B C D 14 25 SCL SCL R16 0 SCL SC L0 SCL0 R18 4.7K R19 4.7K 4 5 SW1 2240138001 3.3V_D GND J2 3 2 1 20L2021003 3 36 6 1 2 SAD SDA SDA R21 0 SD A0 SDA0 SW1 is the switch to choice DDP1000 I2C would be connected with Pixelwork I2C or not. J2 is the connector to
  • LG RD-JT50 | Service Manual - Page 113
    A B C D E L9 4 3 11 9 17 2 10 9 17 2 10 18 18 3 11 19 4 3 11 19 4 12 12 20 5 13 21 20 5 13 21 66 14 22 7 15 14 22 7 15 23 23 8 16 24 8 16 24 G1 G2 G1 G2 2022009024 DVI input port 1 2 RX2RX1RX0RX2+ RX1+ RX0+ RX2RX1RX0RX2+ RX1+ RX0+ VDD RX2+ BAV99 3 2 DG4 RX2- 1 BAV99
  • LG RD-JT50 | Service Manual - Page 114
    SCL SDA 4 VDD A B V33 R60 4.7K R61 4.7K SCL SDA VDD U12 LD1117-3.3V 3 VIN VOUT CA52 VO V33 2 V33 4 CA53 CA54 CA55 CA56 CA57 CA58 CA59 CA60 C300 C301 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U TDO A5 1 GND R53 R54 R55 LUMA GAIN_B LUMA R56 18 GAIN_B R501 18
  • LG RD-JT50 | Service Manual - Page 115
    A B C D E AVDD PVDD V33 AVDD C73 82NK 16V PVDD AVDD 1 AVDD + C50 22U 16V C51 C52 C53 C54 C55 C56 C76 C85 CA89 C87 C81 CA90 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 2 4 R65 4 C74 2.74KF 49 52 69 72 56 58 61 63 27 29 30 20 83 90 100 RAIN_B RAIN_B 8200P K
  • LG RD-JT50 | Service Manual - Page 116
    0.1U 3.3V 3.3V 3.3V 7 4AHC 1G 32 5 VCC A1 B2 4Y GND 3 UI3 UI2 2 R330 1K C330 4 RB3 47 220P K 3 7 4AHC 1G1 4S UI5 RESET RESET RB2 47 RESETn RESETn A0 BHENn A0 BHENn 2 5 VCC A1 20L2055050 B2 ROMWEn ROMWEn 4Y GND 3 3.3V CP4 25V Z 0.1U GND 7 4AHC 1G 32 1 5 UI1
  • LG RD-JT50 | Service Manual - Page 117
    1M F 3.3V 3.3V R101 2K R102 2K RESET MCKEXT DCKEXT GRE0 GRE1 GRE2 GRE3 GRE4 GRE5 GRE6 VFIELD VY0 U22B VY1 VY2 PW166-10TK VY3 VY4 VY5 Video Port VY6 VY7 VUV0 VUV1 VUV2 VUV3 VUV4 VUV5 VUV6 PORTB7 D12 D13 D14 D15 CPUTMS CPUTCK CPUTDO RD WR BHEN ROMOE ROMWE RAMOE RAMWE CS0 CS1
  • LG RD-JT50 | Service Manual - Page 118
    0.1U 3.3V U24 C122 U25 0.1U 7 OE VDD 2 POWERON Y3 16.257MHZ POWERON U25_X1 U25_X2 R115 7 OE 6 S0 4 S1 1 8 X1 X2 VDD 2 CLK 5 GND 3 ICS501 RD CK R113 L29 22 Z220 DCKEXT DCKEXT GND Y2 16.257MHZ U24_X1 U24_X2 6 4 S0 S1 1 X1 8 X2 CLK 5 GND 3 820K R114 ICS511M C123 10P D C124
  • LG RD-JT50 | Service Manual - Page 119
    A B C 8 CN21 1 4 LED[5:0] LED0 LED1 LED2 LED3 LED4 LED5 47 4 5 3 6 2 7 1 8 47 4 5 RN83 3 6 2 7 1 8 RN84 KEY1 47 KEY2 4 5 KEY3 3 6 KEY4 2 7 KEY5 1 8 47 KEY6 4 5 3 KEY7 KEY8 RN81 3 6 2 7 KEY[8:1] KEY9 KEY9 1 8 RN82 2 7 3 6 4 5 33P CN24 8
  • LG RD-JT50 | Service Manual - Page 120
    A B C D E DDP1000 DECOUPLING FOR +3.3V 3.3V_D 3.3V_D 3.3V_D 3.3V_D 3.3V_D DDP1000 BULK DECOUPLING CAPS 3.3V_D 3.3V_D 2V5_D DDP1000 DECOUPLING FOR+2.5V 2V5_D 2V5_D 2V5_D 1 1 1 + C136 + C137 + C146 C128 C129 C138 C139 C147 C148 10U M 10U M 10U M C130 C131 C132 0.1U 0.1U
  • LG RD-JT50 | Service Manual - Page 121
    AT A1 F LD AT A0 NC D3 NC B3 3.3V_D C159 0.1U K 3.3V_D FLASH +3.3V DECOUPLING CAPS FL_OE FL_WE FL_CS AD23 AD22 AF24 3.3V_D B4 RESET F6 BYTE GND GND H6 H1 FLASH INTERFACE 3 DD P1 0 0 0-C FL-OEZ FL-WEZ FL-CSZ G1 A4 OE WE F1 CE RY/BY A3
  • LG RD-JT50 | Service Manual - Page 122
    A B 3.3V_D UY1 7 OE VDD 2 L16 120 OHM 3.3V_D 4 3.3V_D 6 S0 4 S1 CLK 5 CK100M R136 39.2F MOSC MOSC Y5 20MHZ 1 8 X1 X2 GND 3 L27 Z220 C493 22P J RY1 820K IC S50 1 C166 10P J C167 10P J 3 C D E 4 3.3V_D C410 0.1U L407 120 OHM C411 0.1U Y503 3 4 2 1 30MHZ C412 12P J
  • LG RD-JT50 | Service Manual - Page 123
    4 REFCLK SCLKN PCLKM DRCGPDZ 2V5_D 3 GND 3.3V_D 2 A B C D VDRCG 2V5_D R138 R139 R140 10K 10K 10K 2V5_D R143 10K 2 7 6 MULT0 15 MULT1 14 24 23 13 12 STOPZ 11 1 10 U31 REFCLK SYNCLKN PCLKM MULT0 MULT1 S0 S1 S2 PWRDNB STOPB VDDIR VDDIPD C178 0.1U C179 0.1U 3.3V_D VDRCG L17 120 OHM C180
  • LG RD-JT50 | Service Manual - Page 124
    2V5_D 4 3 2 1 2V5_D AC2 AB17 AB16 AB15 AB12 AB11 AB10 U22 U5 T22 T5 R22 R5 R1 M22 M5 L22 L5 K22 K5 E21 E20 E19 E17 E16 E15 E12 E11 E10 E8 E7 E6 B15 B26 B25 B19 B17 B14 B13 B11 B9 B8 B7 B5 B2 A26 A21 A16 A11 A6 A2 A1 AB22 AB18 AB14 AB13 AB9 AB5 AA26 AA1 V22 V5 T26 T2 T1 P22 A U29E P2P5V P2P5V P2P5V
  • LG RD-JT50 | Service Manual - Page 125
    A B C D E 3.3V_D 3.3V_D 4 4 TP220 R183 TP217 1K TP218 TP221 TP219 MBRST[0:15] MBRST[0:15] SCPCK SCPDI SCPDO SCPENZ SCPCK SCPDI SCPDO SCPENZ 56 57 42 58 SCP_CLK SCPDI SCPDO SCPENZ OUT15 OUT14 OUT13 OUT12 79 77 74 72 SR16STROBE SR16MODE1 SR16MODE0 SR16SEL1 SR16SEL0 SR16STROBE
  • LG RD-JT50 | Service Manual - Page 126
    A B C D E 4 V12_D GND VDD_D 3 EXT-ARSTZ MTRSELZ MTRCLK MTRDATA 2 V12_D L19 80 OHM C232 0.1U M C233 0.1U M 1 + C231 22U 25V C234 0.1U M 2 ALVDD VDD_D L20 80 OHM C236 0.1U K VDD_D ALVDD C237 0.1U K ALVDD U41 CKMTR1 2 R198 R199 R200 R201 R202 1K 1K 1K 1K 1K 3 5 1 4 R197 39.
  • LG RD-JT50 | Service Manual - Page 127
    A B C D E D D[ 0:6 3] D D [ 0:6 3] JP2 2 1 4 3 6 5 8 7 10 9 12 11 VDD_D 14 13 VDD_D 16 15 4 18 17 4 20 19 22 21 BINSEL0 BINSEL1 BINSEL0 BINSEL1 24 23 3.3V_D 26 25 VCC2 3.3V_D SAC CLK SACBUS SCTRL-L TRC-L SACCLK SACBUS SCTRL-L TRC-L DD62 DD60 DD58 DD56 28
  • LG RD-JT50 | Service Manual - Page 128
    (From 48.J7612.S51 to 48.J7612.S52): 1. Reject LED2, LED11, LED10, R17, R19 and R21. 2. Add R41, R42, R43, R44 and R45 1206 registor. 3. Change LED4 and LED9 to double color ( Green and Ren). 4. LED4 placement at original LED9 and LED11 location. 5. LED9 placement at original LED2 and LED4 location
  • LG RD-JT50 | Service Manual - Page 129
    5 4 3 2 Optical Points OP1 OP OP2 OP OP3 OP OP4 OP OP5 OP OP6 OP OP7 OP D OP8 OP OP9 OP OP10 OP11 OP12 OP13 OP14 OP OP OP OP OP Screw Holes 1 1 1 1 1 5 9 5 9 5 9 5 9 5 9 4 8 4 8 4 8 4 8 4 8 3 7 3 7 3 7 3 7 3 7 2 6 2 6 2 6 2 6 2 6 C H1
  • LG RD-JT50 | Service Manual - Page 130
    5 4 3 2 D Screw Holes GND 1 1 1 1 5 9 5 9 5 9 5 9 4 8 4 8 4 8 4 8 3 7 3 7 3 7 3 7 2 6 H1 2 6 H2 2 6 H3 2 6 H4 HOLE-V8 HOLE-V8 HOLE-V8 HOLE-V8 C Optical Points B OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP OP OP OP OP OP OP OP8 OP OP9 OP OP10 OP11 OP12
  • LG RD-JT50 | Service Manual - Page 131
    RS702 G1 1000P K 1000P K 47 V12 Q701 SI4431DY-T1 5V J7304 1 VDD 3 8 LAMP-SYNC 1 2 7 LAMPLIT 2 2 D7301 10CTQ150S 2 1 2 1 + C7301 + C7303 470U 25V 470U 25V 1 6 R701 5 LAMP-RXD 3 4 D 47K SCL 5 R702 th erm SDA FAN_P 6 7 3 47 8 G2 4 1 D7302 1 2 SS3H10
  • LG RD-JT50 | Service Manual - Page 132
    15 VCC 2 4.7K 1 D 3 Q506 2 2 FAN4_P 1 RA501 4.7K VDD_F R510 3 Q504 2N3904 1 R509 2.2K 2 + C505 2.2U RB501 50V 2.2K R508 2.2K 10K 11 ALERT 6 RESET 1 OUT1 10 FG1 9 CLK G768B DXP1 3 DXN 4 DXP2 5 OUT2 16 FG2 13 GND GND 7 8 R514 C507 2200P K C508 2200P K 10K VDD_F FAN 1_
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DLP PROJECTOR
SERVICE MANUAL
MODEL
RD-JT50/51/52
CAUTION
BEFORE SERVICING THE PROJECTOR,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.