S/M NO. : DSL140TEF0 Service Manual 20" LCD CHASSIS : SL-140T Model : DLT-20W2 Jul.
Contents I. Parts with the exception of MODULE 1. Safety Precaution………………………………………………………………………………… 2. Product Specification …………………………………………………………………………… 3. Block Diagram …………………………………………………………………………………… 4. Schematic Diagram ……………………………………………………………………………… 5. PCB Data ………………………………………………………………………………………… 6. Trouble Shooting ………………………………………………………………………………… 7. Service Part List ………………………………………………………………………………… 7-1 Service Part List …………………………………………………………………………… 9. Power …………………………………………………………………………………………… 10.
1. Safety Precautions (1) When moving or laying down a LCD Set, at least two people must work together. Avoid any impact towards the LCD Set. (2) Do not leave a broken LCD Set on for a long time. To prevent any further damages, after checking the condition of the broken Set, make sure to turn the power (AC) off. (3) When opening the BACK COVER, you must turn off power (AC) to prevent any electric shock. (4) When loosening screws, check the position and type of the screw.
-5- D S U B C O M P H D M I A V 2 S C A R T SW L/R TDA9973 HDMI PC AUDIO IN [L/R] PC Hsync, Vsync 2 PC IN [R, G, B] SW COMP Video IN [Y, Pb, Pr] COMP AUDIO IN[L/R] SPDIF OUT HDMI IN 2 IA05 Video Switch R, G, B L/R 2 2 3 2 24 D VIDEO Audio Switch 3 2 UOC_UP, SCALAR_UP Front AV, S-VHS IN [V, Y, C] Front AUDIO IN [L/R] 3 S/SW 2 4 7 IA03 AUDIO L/R R, G, B, CVBS AGC, AGC_ADJ SAWS/W VIF SIF SCART OUT [Vout, L/R] 3 3 2 8 2 [K3953M] [K9650M] IF Filter (SAW) Digit
TS_CLK TS_Sync TS_Valid 8 TDA_Data[0:7] -67 BUS Transceiver 74LVC245 PCMCIA[8:14] PCMCIA[0:7] 8 74LVC573 Latch 74LVC573 Latch 8 M29W320 Flash Memory PCMCIA_D[0:7] 15 MIU_ADDR[0:24] MIU_DATA[0:7] A_MDO[0:7] CI SLOT PI01 A_MDI[0:7] CI Control ICD30 CIMAX TS_DATA[0:7] 24 8 8 UDA1334BTS IIS M24C64 2 2 DVB AUDIO L/R 4 R, G, B, CVBS SDRAM_ADDR[0:14] 15 ADC 2 PNX8314 MPEG 16 EEPROM IIC SDRAM_DATA[0:15] SDRAM K4S281632D Block Diagram
-7- INVERTER 24V POWER MODULE BL_ADJ BL_EN SW8 MAIN SW I804 Channel #2 PANEL Power Switching IRF7316 Channel #1 15V Switching I805 APW1172 9V 3.3V I851 Channel #2 5V Switching IRF7316 Channel #1 9V Switching I803 AP1117EA33A S/B 3.3V 5V 5V 3.3V 1.8V 1.2V 1.8V 3.3V 1.8V I812(AP1117E18A) 3.
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Schematic Diagram -9-
Schematic Diagram -10-
Schematic Diagram -11-
Schematic Diagram -12-
Schematic Diagram -13-
Schematic Diagram -14-
Schematic Diagram -15-
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PCB Data BOTTOM -17-
7. Trouble Shooting * Facts you must know at trouble diagnosis or repairing (1) The trouble diagnosis and repairing of set means Module . In other words, find out which PCB modules are not working and replace them with normal PCB modules. (2) This TROUBLE SHOOTING list only contains representative and simple PCB trouble diagnosis and Module Exchange method. Therefore, if you find Sets which are difficult to diagnose or to repair, contact Daewoo Electronics.
Trouble Shooting 7-1. When LED doesn’t lit. Check start Y N Is the AC power cord correctly connected? Confirm power cord connection. Y N Is power S/W ON? Confirm Power S/W ON. Y Is output voltage of Power module correct? (or LIPS) N Y Check the Main PCB. -19- Check the power connection. Exchange the power module.
Trouble Shooting 7-2. When TV doesn’t turn on in red LED. Check start Y Is output voltage of Power module correct? (or LIPS) N Does TV turn on pushing the CH key? Y N Y Check the connection to IR PCB. Check the operation of Remote Controller. Confirm Power S/W ON. 7-3. When “white screen”. Check start Y N Is correctly connected? Check the connection Of Panel Y N Is normal? Check the Main PCB Y Check the connector or Main PCB -20- Check the power connection. Exchange the Power module.
Trouble Shooting 7-4. When “No picture” in TV mode. Check start Y N Does LED turn on in GREEN? Go to chap 7 - 2 Y N Does raster appear? Is this weak discharge On the screen? Y Y Does auto - tuning Function operate normally? Check I501 Y Tune the channel N Check the tuner -21- N Confirm AC connection. Confirm Power SW ON.
Trouble Shooting 7-5. When “No picture” in External input mode. Check start Y Does OSD menu Screen appear? N Is this weak discharge On the screen? Go to 7 - 4 N Check the Connection of Jack Y Does input source operate? N Operate AV device Y Is input selection In used mode? Confirm AC connection. Confirm Power SW ON.
Trouble Shooting 7-6. When No Sound in External input mode.
Trouble Shooting 7-7. When Key does not operate.
Trouble Shooting 7-8. When Remote Controller does not operate. Check start Y N Does input of key operate? Check the I501 Y N Does remote Controller operate? Check the battery of remote controller Y Whenever push the button of Remote controller, does the 2nd pin Of P501A output normal? N Exchange the Key PCB Y Check IR cable and I501 Output of 2nd pin of P501A (IR) : PCB for Remote Control EX) Push “PR DOWN” button.
8. Service part list 8-1.
Service part list LOC C331 C332 C333 C335 C338 C339 C340 C341 C343 C344 C366 C367 C368 C369 C370 C372 C373 C375 C377 C380 C384 C385 C387 C390 C392 C393 C395 C524 C525 C526 C527 C528 C529 C530 C532 C533 C534 C535 C537 C539 C540 C542 C543 C545 C547 C549 C556 C558 C596 C601 C602 C610 C611 C621 C622 C623 C625 C626 C627 C628 C629 C630 C631 C633 C640 C641 C645 C646 PART CODE HCQK101JBA HCQK101JBA HCBK104KBA HCBK104KBA HCBK104KBA HCBK104KBA HCBK104KBA HCBK104KBA HCFC475ZBA HCBK104KBA HCBK104KBA HCBK104KBA HCBK104
Service part list LOC PART CODE CC15 CC16 CC18 CC27 CC29 CC30 CC40 CC41 CD01 CD02 CD03 CD04 CD05 CD06 CD07 CD08 CD10 CD11 CD12 CD13 CD14 CD18 CD19 CD20 CD21 CD22 CD24 CD26 CD27 CD28 CD29 CD33 CD34 CD44 CD45 CD49 CD53 CD55 CD61 CD62 CD63 CD66 CD68 CD69 CD70 CD71 CD72 CD76 CD77 CD86 CD87 CD88 CD90 CD91 CD94 DA19 DA22 DA23 DA24 DA25 DA27 DA30 DA32 DA34 I601 L202 L203 L204 HCBK104KBA HCBK104KBA HCBK104KBA HCQK101JBA HCBK104KBA HCBK104KBA HCQK220JBA HCQK101JBA HCBK104KBA HCBK104KBA HCBK104KBA HCBK104KBA HCBK1
Service part list LOC PART CODE R506 R525 R526 R527 R528 R530 R531 R540 R545 R549 R550 R551 R552 R553 R554 R556 R601 R602 R605 R606 R611 R612 R633 R634 R641 R642 R643 R644 R645 R646 R647 R649 R662 R663 R704 R705 R706 R709 R710 R712 R731 R732 R733 R734 R814 R815 R824 R826 R832 R846 R849 R857 R858 R865 R868 R880 R881 R885 R893 R897 R898 R899 RA01 RA02 RA03 RA04 RA06 RA07 HRFT103JBA HRFT101JBA HRFT101JBA HRFT101JBA HRFT101JBA HRFT151JBA HRFT181JBA HRFT103JBA HRFT473JBA HRFT569JBA HRFT123JBA HRFT393JBA HRFT5
Service part list LOC PART CODE RC23 RC24 RC25 RC26 RC27 RC28 RC29 RC30 RC50 RC56 RC58 RC65 RC66 RC67 RC71 RC72 RC73 RC74 RC76 RC81 RC82 RC92 RC93 RC95 RC96 RC97 RC99 RD02 RD05 RD07 RD09 RD15 RD17 RD20 RD21 RD22 RD28 RD31 RD45 RD48 RD49 RD51 RD62 RD63 RD65 RD66 RD85 RD97 RX03 RX11 RX19 RX46 RX95 RX96 RX97 RX98 ZZ200 C102 C106 C232 C235 C244 C265 C334 HRFT152JBA HRFT333JBA HRFT102JBA HRFT683JBA HRFT102JBA HRFT821JBA HRFT333JBA HRFT821JBA HRFT821JBA HRFT103JBA HRFT202JBA HRFT101JBA HRFT101JBA HRFT103JBA HR
9. Power 9-1. IPB-6024W02(The powe module for DLP-20W2) Input Requirements. Input Voltage Range Frequency Range Input Current Inrush Current Earth Leakage Current Hi-Pot Test Cutoff Current 10mA Voltage Range:AC180V to 270V Normal Voltage:AC 240V Frequency Range:47 To 63Hz Normal Frequency:50 To 60Hz ≤0.35 Arms at 240 Vac input 240V 30A peak 3.5mA MAX(250AC) Primary to GND:3000VAC for 1 minute 3.
10. Inverter 10-1. Feature - Drive 6 lamps with one module - Norminal current 6.5mArms for each lamp - 21.6~26.4V input voltage operation - Automatically balancing of lamp current - Long lamp life with soft start - Protection against lamp open or failure - Built-in fuse - Low EMI and spurious noise 10-2. Recommended operating conditions. Symbol Recommendation Min R.C. Max Units Input supply voltage VIN 21.6 24.0 26.4 V Full bright lamp current IO(MAX) 4.0 6.5 7.
Inverter 10-4. Troubleshooting *Backlight doesn’t turn on Check start Y N Is P502 correctly connected? Check the connection of LIPS Y N Is voltage of pin#2 of P502 under 3.0V? Y Change LIPS or Panel. -33- Check Main PCB.
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SOFTWARE INSTALL & UPGRADE
SOFTWARE INSTALL & UPGRADE 1. Software upgrade requires: Service remocon R-30SVC7, Single master, Jig EURO Scart, Euro cable, AC adapter. a) Please connect Single Master to PC port LPT1.
SOFTWARE INSTALL & UPGRADE 2. Please install software Daewoo Flashing (DF1_2Setup.exe). After install please restart computer.
SOFTWARE INSTALL & UPGRADE 3. After install Daewoo Flashing Tool please run “Daewoo Flashing 1.2” 4. Please choose IC type (for LCD TV - N1F 256 AV FULL STEREO).
SOFTWARE INSTALL & UPGRADE 5. Please choose Flash Memory (UOC). 6. Please choose Interface (Single Master).
SOFTWARE INSTALL & UPGRADE 7. Please choose port (LPT1) 8.
SOFTWARE INSTALL & UPGRADE 9. Please choose software version (depending on LCD Panel – for LCD TV 20" panel makers are AUO and LG Philips, for 17" LCD TV we use only one type of panel LG Philips).
SOFTWARE INSTALL & UPGRADE 10. Please ON LCD TV and press SVC button on Service remocon and next press SCREEN button to make UOC OFF. Software version 11. Please connect EURO CABLE to LCD TV and to JIG EURO SCART. Please supply 12V for JIG EURO SCART. 12. Please press Flash button. Daewoo Flashing automatically upgrade new software.
SOFTWARE INSTALL & UPGRADE 13. After finish please disconect Euro Cable from LCD TV and OFF /ON LCD TV. Software will change registers after ON. ATTENTION!!!!:Before apply new software please check W/B settings. New software automatically deletes W/B parameters and applies default values. Please use Service remocon. Press SVC button and next R DRV, G DRV, B DRV and R BIAS, G BIAS. Please memorize these values and after upgrade software set again W/B values. 14.
DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG, MAPO-GU, SEOUL, KOREA. C.P.O. BOX 8003 SEOUL KOREA PRINTED DATE : Jul.
