LG Projector RD-JT41 User Manual

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LG RD-JT40/41 Service Manual
1
RD-JT40/RD-JT41
SERVICE MANUAL
Caution
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this Acer DLP projector. Be sure to read
cautionary items described in the manual to maintain safety before servicing.
Service Warning
1. When replace the lamp, to avoid burns to yor fingers. The lamp becomes too hot.
2. Nevr touch the lamp bulbwith a finger or anything else. Never drop it or give it a shock. They may cause
bursting of the bulb.
3. This projector is provided with a high voltage circuit for the lamp. Do not touch the electric parts of
powrer unit (main), when turn on the pojector.
4. Do not touch the exhaust fan, during operation.
Contents
1. Specifications............................................................................................................................................2
2. Spare Parts List .......................................................................................................................................4
3. Shipping Cntents......................................................................................................................................5
4. Projector Dsription....................................................................................................................................6
5. Rmote Control Desription.........................................................................................................................9
6. Insallation................................................................................................................................................11
7. Operation................................................................................................................................................13
8. Shutdown................................................................................................................................................21
9. Maintenance...........................................................................................................................................22
10. Lamp Replacement..............................................................................................................................23
11. Trouble Shooting..................................................................................................................................25
12. Timing Char..........................................................................................................................................33
13. DMD Image Secification.......................................................................................................................34
14. Electrical nterface Caracter..................................................................................................................37
15. Final Assembly Alignent Procedure......................................................................................................39
16. Pakng Description................................................................................................................................44
17. Appearance Description.......................................................................................................................45
18. Dimension ............................................................................................................................................47
19. Schematics ..........................................................................................................................................48
20. Assy Drawing .......................................................................................................................................85
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Summary of Contents

Page 1 - SERVICE MANUAL

LG RD-JT40/41 Service Manual1RD-JT40/RD-JT41 SERVICE MANUAL CautionBe sure to read this manual before servicing. To assure safety from fire, electric

Page 2 - 1. SPECIFICATIONS

LG RD-JT40/41 Service Manual10The remote control sensors are located in the front/ back of the projector. The distance between the sensor and the remo

Page 3

LG RD-JT40/41 Service Manual11 Caution Avoid excessive heat and humidity. There may be danger of an explosion if batteries are incorrectly replaced.

Page 4 - 2. Spare Parts List

LG RD-JT40/41 Service Manual126. INSTALLATION Screen Size Place the projector at the required distance from the screen according to the desired pictur

Page 5 - 3. Shipping Contents

LG RD-JT40/41 Service Manual13Connecting to Various Equipment It only takes a few seconds to connect your projector to your desktop or notebook comput

Page 6 - 4. Projector Description

LG RD-JT40/41 Service Manual147. OPERATION Start Up 1. Plug the power cord into a wall socket. 2. Turn on the main power switch. 3. Press POWER to sta

Page 7 - External Control Panel

LG RD-JT40/41 Service Manual15Digital Keystone Correction Keystoning refers to the situation where the projected image is noticeably wider at either t

Page 8 - Adjuster

LG RD-JT40/41 Service Manual16Source Selection When several input sources are available, press the SOURCE key to make a selection from the control pan

Page 9

LG RD-JT40/41 Service Manual171. Display Menu

Page 10 - LG RD-JT40/41 Service Manual

LG RD-JT40/41 Service Manual182. Image Menu

Page 11

LG RD-JT40/41 Service Manual193. Source Menu

Page 12 - 6. INSTALLATION

LG RD-JT40/41 Service Manual21. SPECIFICATIONS Projector Specifications Technical Specifications Note: All specifications are subject to change witho

Page 13

LG RD-JT40/41 Service Manual204. Control Menu FUNCTION DESCRIPTION LanguageLanguage sets the language for the OSD control menus. Use the 3 / 4 key to

Page 14 - 7. OPERATION

LG RD-JT40/41 Service Manual215. PIP Menu These functions are available only when the input mode is PC and the PIP source is Video or S-Video

Page 15 - Auto Adjustment

LG RD-JT40/41 Service Manual228. Shutdown 1. Press POWER and a warning message will appear. To turn off the projector, press POWER again. 2. The fan

Page 16 - Menu System

LG RD-JT40/41 Service Manual239. MAINTENANCE Lamp Information Use and Replacement of the Lamp When the lamp Indicator lights up red or a message appea

Page 17 - 1. Display Menu

LG RD-JT40/41 Service Manual2410. Lamp Replacement Caution To reduce the risk of electrical shock, always turn off the projector and disconnect the po

Page 18 - 2. Image Menu

LG RD-JT40/41 Service Manual25Caution To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing the lam

Page 19 - 3. Source Menu

LG RD-JT40/41 Service Manual2611. TROUBLE SHOOTING Common Problems & Solutions PROBLEMS TRY THESE SOLUTIONS NO POWER Make sure the power cord is i

Page 20

LG RD-JT40/41 Service Manual271. Final Assembly Trouble Shooting Guide Back-LIGHT OK?No STEP:1.Check power core2.Check power board and wireYesSystem

Page 21 - 5. PIP Menu

LG RD-JT40/41 Service Manual282. Engine Assembly Trouble Shooting Guide AImage NG?(Blank)YesNo1.Check DMD board2.Check color wheel and Sensor board3.C

Page 22 - 8. Shutdown

LG RD-JT40/41 Service Manual29Blue Edge1.chk lens housing / DMDhousing Assembly2.chk light pipe assembly3.chk TIR assembly4,change light pipe clip5.ch

Page 23 - 9. MAINTENANCE

LG RD-JT40/41 Service Manual3Service Information Accessories (included in the Standard Package) Description of parts Part No.Power cord (EU) 27.82718.

Page 24 - 10. Lamp Replacement

LG RD-JT40/41 Service Manual303. Main Board Trouble Shooting Guide System no worka . IC201 bad soldieringb. Flash(IC201) without software inside.c. IC

Page 25 - Caution

LG RD-JT40/41 Service Manual314. Power Supply Trouble Shooting Guide LINEINPUT0VACOR220VACB + B-380VDCYES CHECK SPS B/D.WHETHER POORSOLDERNOB + B-54VD

Page 26 - 11. TROUBLE SHOOTING

LG RD-JT40/41 Service Manual325. Translation Board Trouble Shooting Guide VCCCPU OKDS660 Translation Board Trouble Shooting GuideVCC,12Vfunction OK?Y

Page 27

LG RD-JT40/41 Service Manual336. DMD Board Trouble Shooting Guide Check power voltages. Check clocks from oscillator (58 MHz), from ASIC (58 MHz and 1

Page 28

LG RD-JT40/41 Service Manual3412. Timing Chart

Page 29

LG RD-JT40/41 Service Manual35DMD Image Specification 1. SCOPE This document specifies the image quality requirements applicable to the DLPTM XGA Comp

Page 30

LG RD-JT40/41 Service Manual36parallel lines outside of the Sea of Mirrors (SOM). 2.9.2 Exposed Metal 2 Exposed Metal 2 is due to a shift in position

Page 31

LG RD-JT40/41 Service Manual37TABLE 1. Image Quality Specification SEQ # TEST SCREEN ACCEPTANCE CRITERIA 1 Major Dark Blemish Two Zone Blue 60 1

Page 32

LG RD-JT40/41 Service Manual3814. Electrical Interface Character Interface Definition 15 pin definition of the mini D-sub male for DDC1/2B protocol 56

Page 33

LG RD-JT40/41 Service Manual39Control Port Pin Description Pin Description 1 Reserved 2 Reserved 3 TX 4 Reserved 5 Reserved 6 Reserved 7 RX 8 GND 8

Page 34 - 12. Timing Chart

LG RD-JT40/41 Service Manual42. Spare Parts List Item No:99.J3477.L11Projector LGRD-JT40 spare parts list Parts No Description 55.J3405.001 PCBA FAN C

Page 35 - DMD Image Specification

LG RD-JT40/41 Service Manual4015. Final Assembly Alignment Procedure Unless other specified, all alignments should meet the following conditions: 1. A

Page 36 - 3. ACCEPTANCE REQUIREMENTS

LG RD-JT40/41 Service Manual41Channel Prime Mode Timing Pattern Item Criteria Gray 0-100% H&V Res. 1 Line Color Hue, Sat need correct Smear Not ac

Page 37

LG RD-JT40/41 Service Manual42PT863 Text EM Character EM Clear Movie Video Essential Gray 0-100% H&V Res. 2 Line Color Hue, Sat need correct Smea

Page 38 - Interface Definition

LG RD-JT40/41 Service Manual43Color Hue, Sat need correct Smear Not acceptable Linearity As optical spec (31.469KHz, 59.94Hz) Jitter, Swing, Snack,

Page 39

LG RD-JT40/41 Service Manual44(C) Optical Check Equipment: Chroma 2250, CL-100 Aspect Ratio: 4:3 User OSD setting: (PC), 30 gray Final Check Step Scre

Page 40

LG RD-JT40/41 Service Manual4516. PACKING DESCRIPTION CTN LBL PRINTING:

Page 41

LG RD-JT40/41 Service Manual46

Page 42

LG RD-JT40/41 Service Manual4717. APPEARANCE DESCRIPTION

Page 43

LG RD-JT40/41 Service Manual48SPEC LBL PRINTING LAMP LBL PRINTING

Page 44

LG RD-JT40/41 Service Manual4918. Dimensions

Page 45 - 16. PACKING DESCRIPTION

LG RD-JT40/41 Service Manual5Parts No Description 55.J3405.001 PCBA FAN CONTROL/B DX66055.J3408.001 PCBA DC-DC/B DX66060.J3419.001 ASSY PFC MODULE DX6

Page 46

5544332211D DC CB BA A304-C010DS660 DMD CHIP BD14Monday, March 25, 2002BILL WJ CHANGT.S.WU48.J3802.S01 FAB:S01ANGEL HU99.J3877.001A3TitleSizeD

Page 47 - 17. APPEARANCE DESCRIPTION

5544332211D DC CB BA A304-C010DS660 DMD CHIP BD24Monday, March 25, 2002BILL WJ CHANGT.S.WU48.J3802.S01 FAB:S01ANGEL HU99.J3877.001A3TitleSizeD

Page 48 - LAMP LBL PRINTING

5544332211D DC CB BA A304-C010DS660 DMD CHIP BD34Monday, March 25, 2002BILL WJ CHANGT.S.WU48.J3802.S01 FAB:S01ANGEL HU99.J3877.001A3TitleSizeD

Page 49 - 18. Dimensions

5544332211D DC CB BA AÑ°¬·½¿´ б·²¬-Screw Holes304-C010DS660 DMD CHIP BD44Monday, March 25, 2002BILL WJ CHANGT.S.WU48.J3802.S01 FAB:S01ANGEL H

Page 53 - Screw Holes

5544332211D DC CB BA A304-C010 DX660 KEYPAD BD SCHEMAICS12Saturday, March 02, 2002BILL WJ CHANG H.C.TSOU48.J3403.S01FAB:S01ANGEL HU99.J

Page 54

5544332211D DC CB BA AÑ°¬·½¿´ б·²¬-Screw Holes304-C010 DX660 KEYPAD BD SCHEMAICS22Saturday, March 02, 2002BILL WJ CHANG H.C.TSOU48.J34

Page 55

AABBCCDDEE4 43 32 21 1POWERONPr/CrPb/CbYp/YcCVBSCHROMAHSYNCVSYNCLUMAHSYNC_OVSYN C_ORAIN_BGAIN_BBAIN_BV33REMOTE_IRGCLKDCKEXTVY[7:0]RXDGBE[7:0]VCLKVFIEL

Page 56

LG RD-JT40/41 Service Manual6Optional Accessories 1. Macintosh adapter 2. 210W Lamp module 4. Projector Description Projector

Page 57

AABBCCDDEE4 43 32 21 1VSYNCRAIN_BBAIN_BYp/YcPr/CrPb/CbHSYNCDDC5VGAIN_BHSYNC_OVSYNC_OPC_AUDIO_RPC_AUDIO_LLUMACHROMACVBSVDDAUDIO_RAUDIO_LVDDPC_YP_SWRED_

Page 58

AABBCCDDEE4 43 32 21 1V_OUTRGBO_BH_OUTBAIN_BBLUE_OUTGAIN_BRGBO_RVSYNC_OHSYNC_O-5V_PIN1CAP-CAP+-5V-5VRAIN_BIN2-RGBO_RRGBO_GRGBO_GRED_OUTGREEN_OUTRGBO_B

Page 59

AABBCCDDEE4 43 32 21 1CVBSCHROMALUMARLUMRCVBSLLC1LLC2RCHRVUV[7:0]DECOESDASCLAI22VY7VUV6ITRILLC2VY0VY[7:0]LLC1VY6VPENAI2DVUV4AI12VVSVUV7VFILDVUV2VY2VY3

Page 60

AABBCCDDEE4 43 32 21 1PVDDSCLSDAGBLKSPLGCOASTGRINGGINGBINBAINHSYNCVSYNCGVREFGVMIDADBE0ADBE1ADBE2ADBE3ADBE4ADBE5ADBE6ADBE7ADGE0ADGE1ADGE2ADGE3ADGE4ADGE

Page 61

AABBCCDDEE4 43 32 21 1A16A15A14A13A12A11A10A9A19A18A8A7A6A5A4A3A2 A1A17D7D14D6D13D5D12D4D11D3D10D2D9D1D8D0D15VPPEN VPPON VP1VPP3.3VVP3VP23.3VROMWEnROM

Page 62

AABBCCDDEE4 43 32 21 1VUV7VUV2VY6VY5VY1VUV6VUV1VUV5VUV0VY0VUV4VY4VY7VUV3VY3VY2GBE5GGE1GGE6GBE1GBE3GGE4GBE0GRE1GRE5GGE0GRE0GGE3GRE6GGE2GBE6GRE7GBE2GRE2

Page 63

AABBCCDDEE4 43 32 21 1U18_X1U18_X2RMCKU17_X1U17_X2RDCKRESET_IWATCHDOGPOWERONDCKEXTMCKEXTVDD3.3VGNDWATCHDOGRESET3.3V3.3V3.3VVDD3.3V3.3VVDD3.3VRESETXRES

Page 64

AABBCCDDEE4 43 32 21 1IR_IIQ4_BQ5_CQ4_CQ5_ELAMPLITLAMPLITZQ5_BQ8_BQ7_CLAMP_OUTDRE6DRE4DRE2DRE0DRE7DRE5DRE3DRE1DBE6DBE4DBE2DBE0DBE7DBE5DBE3DBE1DENDVSCW

Page 65

AABBCCDDEE4 43 32 21 1AUDIO_RPC_AUDIO_LPC_AUDIO_R3.3V_AK5K6LED_A0KEY0KEY3D7KEY6KEY2LED_A2LED_A3KEY3D3LED0LED_A1D[0:7]CS0nKEY0KEY4D5LED1KEY[6:0]KEY5KEY

Page 66

AABBCCDDEE4 43 32 21 1USB_D-VUSBTX.DL_AUSB_D+VUSB_AC1_BC1_ARXD_AC2_ARX.DLR2INTX.DLRX.DLTX.DLVUSB_AQ13_BQ13_CUSB_X2 USB_X1VR_AU28_1 U28_4RST_AC2_BRX.DL

Page 67

LG RD-JT40/41 Service Manual7External Control Panel

Page 68

AABBCCDDEE4 43 32 21 1GNDTitleSize Document Number Rev.Date: Sheet ofProjectCodeReviewed By ApprovedByPrepared ByModel NamePCB P/NPCBRev.OEM/ODM Model

Page 70

5544332211D DC CB BA AU5U6304-C031DX660 DMD BD112Wednesday, April 17,2002BILL WJ CHANG H.C.TSOU48.J3401.S03 FAB:S03ANGEL HU99.J3477.001A3TitleSizeDo

Page 71

5544332211D DC CB BA AFrom CW Sensor20.L2021.003Power Supply noly for CW Sensor1 page is modified all304-C031DX660 DMDBD212Wednesday, April 17, 2002

Page 72

5544332211D DC CB BA ATo Page9To Page8To KSR16CTo U6To U6TO DMDTO SDRAMTO U6TO FLASHTO CPUTO SDRAMTO FLASHTO U6From CPU(TO INPUT)304-C031DX660 DMDBD

Page 73 - 1 page is modified all

5544332211D DC CB BA AFROM U5FROM U5Screw HolesÑ°¬·½¿´ б·²¬-304-C031DX660 DMDBD412Wednesday, April 17, 2002BILL WJ CHANG H.C.TSOU48.J3401.S03 FAB:S

Page 74 - (TO INPUT)

5544332211D DC CB BA ATo U5 U6From U5From INPUTFrom U6TO U5From U5From U5 U6Motor Pole R99 OpenGround Guard ProtectionFROM U5 FROM U5312RB717FBAT54SWT

Page 75

5544332211D DC CB BA ATO U5TO U5TO DMDTO SDRAMTO U5From U5 CPUTO CPUFrom U5From U5TO U5From U5 CPUTO DMDFROM U5FROM U5TO SDRAMFROMINPUTGround Protecti

Page 76

5544332211D DC CB BA ATO U5TO U5 TO U6TO U6TO U5TO U5TO U6TO U6TO U6TO U6TO U5TO U5304-C031DX660 DMDBD712Wednesday, April 17, 2002BILL WJ CHANG H.C.

Page 77 - Ground Protection

5544332211D DC CB BA ATO Page9TO Page82N22011 G 2S3 D1 B2 E3 C2N2222A2N2907MQSF1P02LT11 G2D3S4 DIRFL9014_SOT-223 FZT6491 B2 C3 E4 CFZT849MBR0540T112SO

Page 78

LG RD-JT40/41 Service Manual8Adjuster

Page 79

5544332211D DC CB BA AFROM U5FROM U5FROMPage7To DMDTO KSR16C312LM4040FROM U5To KSR16C213BAV99RET1SOT-23304-C031DX660 DMD BD912Wednesday, April 17,

Page 80

5544332211D DC CB BA ATO KSR16CTO KSR16CFrom U5From U5From U5From Page7304-C031DX660 DMD BD10 12Wednesday, April 17,2002BILL WJ CHANG H.C.TSOU48.J34

Page 81

5544332211D DC CB BA AFrom Page8From Page9TO DMDFrom U5304-C031DX660 DMD BD11 12Wednesday, April 17, 2002BILL WJ CHANG H.C.TSOU48.J3401.S03 FAB:S03

Page 82 - From Page9

5544332211D DC CB BA A304-C031DX660 DMD BD12 12Wednesday, April 17, 2002BILL WJ CHANG H.C.TSOU48.J3401.S03 FAB:S03ANGEL HU99.J3477.001A3TitleSize D

Page 83

5544332211D DC CB BA A304-C05FAN CONTROL BD13JOHN LINH.C.TSOU48.J3405.S04S04ANGEL HU<Size>DX66099.J3877.001 1Wednesday, May 01, 2002NATitleSi

Page 84

5544332211D DC CB BA A304-C05FAN CONTROL BD23JOHN LINH.C.TSOU48.J3405.S04S04ANGEL HU<Size>DX66099.J3877.001 1Wednesday, May 01, 2002NATitleSi

Page 85

5544332211D DC CB BA AScrew HolesÑ°¬·½¿´ б·²¬-304-C05FAN CONTROL BD33JOHN LINH.C.TSOU48.J3405.S04S04ANGEL HU<Size>DX66099.J3877.001 1Wednesd

Page 86

5544332211DDCCBBAA304-C060DX660 CHIP BD14Saturday, April 27, 2002BILL WJ CHANG T.S.WU48.J3404.S02 FAB:S02ANGEL HU99.J3477.001A3TitleSizeDocument Num

Page 87

5544332211DDCCBBAA304-C060DX660 CHIP BD24Saturday, April 27, 2002BILL WJ CHANG T.S.WU48.J3404.S02 FAB:S02ANGEL HU99.J3477.001A3TitleSizeDocument Num

Page 88

5544332211DDCCBBAA304-C060DX660 CHIP BD34Saturday, April 27, 2002BILL WJ CHANG T.S.WU48.J3404.S02 FAB:S02ANGEL HU99.J3477.001A3TitleSizeDocument Num

Page 89

LG RD-JT40/41 Service Manual9The projector is equipped with 2 quick-release adjuster feet. Push the buttons to adjust its tilt angle. 1. Lift the proj

Page 90 - ScrewHoles

5544332211DDCCBBAAÑ°¬·½¿´ б·²¬-ScrewHoles304-C060DX660 CHIP BD44Saturday, April 27, 2002BILL WJ CHANG T.S.WU48.J3404.S02 FAB:S02ANGEL HU99.J3477.00

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