TCL L22E75BK Service Manual Download Page 30 | Manualshive

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22

″ LCD

TV

TCL L22E75BK

7. PCB Layout

7.1 Main Board

715T2509-2

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Summary of Contents for L22E75BK

Page 1: ...27 7 2 Power Board 29 7 3 IR Board 31 7 4 Key Board 32 8 Block Diagram 33 9 Schematic Diagram 34 9 1 Main Board 34 9 2 Power Board 42 10 Exploded View 44 11 BOM List 45 Table Of Contents 1 Revision Li...

Page 2: ...TCL L22E75BK AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES 2 CAUTION USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN...

Page 3: ...lacement parts which do not have the same specified safety characteristics might create shock fire or other hazards Under no circumstances should the original design be modified or altered without wri...

Page 4: ...22 LCD TV TCL L22E75BK If the surface of panel becomes dirty please wipe it off with a soft material Cleaning with a dirty or rough cloth may damage the panel 4...

Page 5: ...22 LCD TV TCL L22E75BK Revision List Version Release Date Revision Instructions TPV Model A00 Nov 08 2007 Initial Release E227A1NMBWTLNN 5...

Page 6: ...mm TV Function TV Standard PAL B G D K I NTSC M Sound systems NICAM Color systems PAL NTSC Extended input Video RCA x 1 Audio L R x 1 S VIDEO S Video x 1 Component input Y Pb Cb Pr Cr Y Pb Cb Pr Cr x...

Page 7: ...22 LCD TV TCL L22E75BK Weight net Kg w o Accessories 6 3 Kg 7...

Page 8: ...the volume PR Press P or P to browse through the TV channels which are not erased OK Press this KEY to validate your selected and operate MENU Press repeatedly to display OSD menu MUTE Temporarily int...

Page 9: ...these 2 buttons can be used to confirm selected options CH To switch channels Under Menu status these 2 buttons can be used to access selected options MENU Enter or exit the OSD Menu INPUT Enter the...

Page 10: ...e Menu Press the SOURCE button to enter the Source Menu PC HDMI TV AV S Video YPb Pr Main Menu I Press the menu to enter into the OSD menu Adjustable items for TV mode includes Picture Sound advance S...

Page 11: ...ndard Dynamic Soft to select the overall effect of the screen 8 MEMORY REACLL To reset the video settings back to the factory default settings Brightness Contrast Tint saturation and Sharpness in the...

Page 12: ...he factory default settings Geometry settings under PC mode 1 H Position V Position Adjustable ranges are from 0 100 To move the entire screen up down or left right 2 Clock or Phase Adjustable range i...

Page 13: ...s from the screen Set the Sleep Timer to 0 to disable the Sleep Timer function The timer pauses automatically when entering PC mode resumes when returning to other modes 2 OSD Language Select the OSD...

Page 14: ...andard of the current TV signal display as Auto after choosing Auto Save In Australia the PAL Color system is used 2 Sound system To display the sound standard of the current TV signal display as Auto...

Page 15: ...N 2 HDMI Input signal for HDMI 3 VGA Input signal for PC video with a VGA signal cable 4 AUDIO Input for PC audio signal 5 EARPHONE 6 S Video S Video cable input for DVD LD player VCR or Video 7 Compo...

Page 16: ...Please refer to the following image Note When there is no TV signal input the unit will automatically switch to standby mode after 15 minutes Power Connection Plug the AC power cord into the External...

Page 17: ...ct the 15 pin D SUB color display shielded signal cable to your signal system device and lock both screws on the connector to ensure firm grounding The connector information is as follow 1 6 11 15 5 1...

Page 18: ...ss auto adjust to get the best picture quality This TV with PC function has power saving function following the VESA DPMS Be sure to connect the signal cable to the PC If your TV requires service it m...

Page 19: ...K 4 Mechanical Instructions Step Figure Description Preparatio n Lay the LCD TV on a flat soft and clean surface Remove the base and stand Remove the hinge cover and the screws on the stand to remove...

Page 20: ...TV TCL L22E75BK Remove the back cover Remove the screws mark in red to remove the back cover Remove The hinge plate Remove the six screws to remove the hinge plate Remove the Iron Plate Remove the scr...

Page 21: ...the five screws marked in red to remove the power board 2 Remove the five screws marked in red to remove the main board 3 Disconnect the connector marked in blue and remove power board and main board...

Page 22: ...22 LCD TV TCL L22E75BK Remove the Bezel Remove the screws to remove the bezel Remove The Main Frame Remove the four screws to remove the main frame Panel 22...

Page 23: ...905 Check start voltage for the pin8 of IC901 Check R904 R932 R933 NG 1 Check IC901 2 CheckT901 ZD905 D902circuit OK OK NG Check D909 R939 R938 R914 D906 D904 IC903 IC902 OK Check IC901 pin6 PWM wave...

Page 24: ...22 LCD TV TCL L22E75BK 5 2 Can not start LED indicator yellow 24 NG Repair the key board OK Check U701 U702 NG Replace U701 U702 OK Check U400 Replace U400 NG Check I2 C communication Check key board...

Page 25: ...C918 Check ON OFF signal Check Interface board or main board NG OK Check IC801 PIN5 5V NG OK Change on off circuit Q802 Q803 Q804 ZD803 Check IC801 PIN11 PIN12 PIN19 PIN20 have PWM wave NG OK Change...

Page 26: ...Check the source Reset source NG Check signal filter circuit Replace the filter or resistance RF signal Check Tuner Replace Tuner Check LVDS cable Check input Replace LVDS cable Check panel Replace p...

Page 27: ...Board 25 OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch OK Is Key Pad Board Normally Replace Key Pad Board Ch...

Page 28: ...9 Enter the 8 item to select another color temperature to adjust B Adjust 9300K color temperature 1 Switch the chroma 7120 to RGB mode with press MODE button 2 Switch the MEM channel to Channel 03 wi...

Page 29: ...9300K color temperature 1 Switch the chroma 7120 to RGB mode with press MODE button 2 Switch the MEM channel to Channel 03 with up or down arrow on chroma 7120 3 The LCD indicator on chroma 7120 will...

Page 30: ...22 LCD TV TCL L22E75BK 7 PCB Layout 7 1 Main Board 715T2509 2 30...

Page 31: ...22 LCD TV TCL L22E75BK 31...

Page 32: ...22 LCD TV TCL L22E75BK 7 2 Power Board 715T2210 1 AO 32...

Page 33: ...22 LCD TV TCL L22E75BK 33...

Page 34: ...22 LCD TV TCL L22E75BK 7 3 IR Board 715T2499 1 34...

Page 35: ...22 LCD TV TCL L22E75BK 7 4 Key Board 715T2501 1 35...

Page 36: ...22 LCD TV TCL L22E75BK 8 Block Diagram 36...

Page 37: ...7 0 2 0 1 u F R 7 0 0 1 K 1 1 0 W Q 7 0 1 P M B S 3 9 0 4 1 3 2 R 7 1 0 4 7 K 1 1 0 W 3 3 V C 7 6 2 4 7 0 u F 1 6 V P O W E R O N O F F C 7 0 3 0 1 u F Q 7 1 3 P M B S 3 9 0 4 1 3 2 R 7 0 9 4 7 K 1 1...

Page 38: ...3 3 V A C 7 5 1 0 1 u F C 7 0 1 4 7 U F 1 6 V V c c 3 3 f o r M S T 9 E 1 9 A F B 7 0 8 3 0 0 O H M 1 2 C 7 1 8 2 2 u F L 7 0 1 4 7 u H A V D D _ S I F C 7 2 5 0 1 u F C 7 5 2 0 1 u F D 7 0 1 N C B 3...

Page 39: ...1 8 3 1 8 2 1 8 1 1 8 0 1 7 9 1 7 8 1 7 7 1 7 6 1 7 5 1 7 4 1 7 1 1 7 0 1 6 9 1 6 8 1 6 7 1 6 6 1 6 5 1 6 4 1 6 3 1 6 2 1 6 1 1 6 0 2 0 2 2 0 1 2 0 0 1 9 9 1 9 8 1 9 7 1 9 6 1 9 5 1 9 2 1 9 4 1 9 3 2...

Page 40: ...1 7 1 N C P 1 0 1 P H O N E J A C K 1 2 3 4 5 S O G B I N 5 V s t b R I N C 1 6 5 0 0 4 7 u F C 1 6 7 1 0 0 0 p F R 1 9 0 N C V G A H S Z D 1 1 6 U D Z S 5 6 B 1 2 C 1 7 0 0 0 4 7 u F V S _ R G B 7 1...

Page 41: ...2 N C R 5 0 9 N C H D M I D D C S D A H D M I _ S C L R 5 1 4 N C 7 1 5 T 2 5 0 9 1 C 5 0 2 N C C 5 0 8 N C H D M I 5 V H D M I R X 1 R 5 1 5 N C 0 1 0 5 H D M I A 4 5 8 T u e s d a y M a r c h 2 0 2...

Page 42: ...7 0 1 1 0 W Z D 1 0 2 V P O R T 0 6 0 3 1 0 0 K V 0 5 1 2 R 1 6 4 1 2 K 1 1 0 W A V V in R 1 6 1 4 7 1 1 0 W C 1 4 9 6 8 0 p F R 1 4 9 4 7 1 1 0 W R 1 6 6 1 2 K 1 1 0 W A V S V I D E O L in C 1 5 1 0...

Page 43: ...e S iz e D o c u m e n t N u m b e r R e v D a t e S h e e t o f R 1 3 3 1 0 0 1 1 0 W T V 1 V in S C L _ E X T F B 1 0 2 3 0 0 O H M 1 2 C 1 1 7 2 2 p F R 1 2 2 1 0 1 1 0 W T V _ S I F V id e o M o d...

Page 44: ...D A G N D R 6 0 4 1 K 1 1 0 W U 6 0 0 T D A 7 2 6 6 D 7 1 4 9 1 3 1 1 0 1 1 2 0 2 5 1 9 1 6 6 1 5 8 I N 1 I N 2 S T _ B Y S _ G N D P W _ G N D P W _ G N D P W _ G N D P W _ G N D O U T 1 O U T 1 O U...

Page 45: ...0 1 4 W C 9 1 3 0 0 0 1 u F L 9 0 2 3 0 0 m H 1 4 2 3 R 9 2 5 N C C 9 0 6 1 5 0 0 p F 2 K V D 9 0 9 B A V 2 1 W Z D 9 2 0 R L Z 1 3 B 1 2 1 2 V R 9 2 9 3 3 K 1 4 W C 9 2 0 0 1 u F R 9 4 1 2 0 0 1 8 W...

Page 46: ...5 S G S G D D D D C 8 1 3 1 u F 1 6 V D 8 1 9 N C P T 8 0 1 P O W E R X F M R 6 8 2 9 Q 8 1 3 R K 7 0 0 2 R 8 5 6 7 5 0 K 1 4 W R 8 1 5 1 0 1 4 W D 8 0 2 N C R 8 3 5 1 M 1 1 0 W C 8 0 8 1 5 p F 6 K V...

Page 47: ...22 LCD TV TCL L22E75BK 10 Exploded View 47...

Page 48: ...M 095T8018 3D685 LVDS CABLE 30P 24P 160MM 098TRACG3NETLA REMOTE SENEASY FOR TCL 0D1T 930 6120 SCREW 0D1T 930 6120 SCREW 0M1T 130 8120 SCREW 0M1T1140 6120 SCREW 4 6MM 0M1T1730 6120 SCREW 3 6MM 0M1T1730...

Page 49: ...B Y CONNECTOR 7PIN CN402 033T8027 24 CONN W TO B 12P 2 P 2 0 4504 2 040T 45762412B CBPC LABEL 044T3231508512 CHIELD D SUB R713 061T153M220 59 RST MOFR 22 OHM 5 3WS R711 061T153M390 59 39 OHM 5 3W C602...

Page 50: ...MBS3904 BY PHILIPS Q707 057T 417 4 CHIP PMBS3904 BY PHILIPS Q708 057T 417 4 CHIP PMBS3904 BY PHILIPS Q709 057T 417 4 CHIP PMBS3904 BY PHILIPS Q400 057T 417 6 PMBS3906 PHILIPS SMT Q710 057T 417 6 PMBS3...

Page 51: ...100OHM 1 16W R406 061T0603101 CHIP 100OHM 1 16W R401 061T0603101 CHIP 100OHM 1 16W R181 061T0603101 CHIP 100OHM 1 16W R170 061T0603101 CHIP 100OHM 1 16W R130 061T0603101 CHIP 100OHM 1 16W R133 061T06...

Page 52: ...12 KOHM 5 1 10W R132 061T0603222 CHIP 2 2K OHM 1 16W R403 061T0603223 CHIP 22KOHM 1 16W R412 061T0603223 CHIP 22KOHM 1 16W R719 061T0603223 CHIP 22KOHM 1 16W R720 061T0603223 CHIP 22KOHM 1 16W R748 06...

Page 53: ...1 32 100PF 10 50V X7R C413 065T0402101 32 100PF 10 50V X7R C414 065T0402101 32 100PF 10 50V X7R C613 065T0402101 32 100PF 10 50V X7R C616 065T0402101 32 100PF 10 50V X7R C167 065T0402102 32 1000PF 10...

Page 54: ...065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C735 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C734 065T040210427T CAP 0402 0 1UF Z 25V Y5V TAIYO YUDEN C733 065T040210427T CAP 0402 0 1U...

Page 55: ...3225 17 CHIP 2 2UF 16V Y5V C430 065T0603225 17 CHIP 2 2UF 16V Y5V C429 065T0603225 17 CHIP 2 2UF 16V Y5V C428 065T0603225 17 CHIP 2 2UF 16V Y5V C427 065T0603225 17 CHIP 2 2UF 16V Y5V C426 065T0603225...

Page 56: ...64 33 BAV99 SOT 23 D506 093T 64 33 BAV99 SOT 23 D507 093T 64 33 BAV99 SOT 23 ZD108 093T 64 37 N V PORT 0603 100K V05 ZD107 093T 64 37 N V PORT 0603 100K V05 ZD106 093T 64 37 N V PORT 0603 100K V05 ZD...

Page 57: ...AC Y5P C802 065T 3J3306ET CER CAP 33PF J 3KV TDK C804 065T 3J3306ET CER CAP 33PF J 3KV TDK C834 065T 3J3306ET CER CAP 33PF J 3KV TDK C836 065T 3J3306ET CER CAP 33PF J 3KV TDK C808 065T 6J1506ET CAP CE...

Page 58: ...000 CHIP 0OHM 1 16W R805 061T0603000 CHIP 0OHM 1 16W JR804 061T0603000 CHIP 0OHM 1 16W R803 061T0603103 CHIP 10KOHM 1 16W R804 061T0603103 CHIP 10KOHM 1 16W R806 061T0603103 CHIP 10KOHM 1 16W R835 061...

Page 59: ...T1206204 RST CHIPR 200 KOHM 5 1 4W R817 061T1206204 RST CHIPR 200 KOHM 5 1 4W R809 061T1206204 RST CHIPR 200 KOHM 5 1 4W R912 061T1206223 RST CHIPR 22KOHM 5 1 4W R930 061T1206243 1F CHIP 2 43K OHM 1 1...

Page 60: ...0 22UF K 50V X7R C822 065T0805225 22 CHIP 2 2UF 25V X7R 0805 C827 065T0805471 32 470PF 50X X7R C812 065T0805471 32 470PF 50X X7R C929 065T1206102 72 CHIP 1000PF 500V X7R C913 065T1206102 72 CHIP 1000P...

Page 61: ...WIRE J913 095T 90 23 JUMP WIRE J912 095T 90 23 JUMP WIRE J911 095T 90 23 JUMP WIRE J910 095T 90 23 JUMP WIRE J908 095T 90 23 JUMP WIRE J907 095T 90 23 JUMP WIRE J906 095T 90 23 JUMP WIRE J905 095T 90...

Page 62: ...RANTY CARD Q44TC014 3 EPS Q44TC014654 2A CARTON Q44TC014BRO 1 PAPER BLOCK Q44TC033102 EPS Q44TC033202 EPS Q45T 99609 10 R EPE COVER Q45T 99609 37 R EPE COVER Q52T6025 13 26 MYLAY 001T6017600 SCREW 040...

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