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Akai LM-H17CLSA, Service Manual, Page: 41 / 54

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Akai LM-H17CLSA Service Manual Download Page 41

 

 
 

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Summary of Contents for LM-H17CLSA

Page 1: ...Service Manual AKAI 17 Wide Screen LCD Multi Media Display L LM M H H1 17 7C CL LS SA A...

Page 2: ...embly Instructions 11 7 Block Diagram 15 8 Troubleshooting 16 8 1 Symptom Codes for call center use 16 8 2 Flow Chart for service center use 19 9 Electronic Circuit Description 24 10 Circuit Diagram 2...

Page 3: ...ween pieces of equipment are properly made in accordance with the manufacturer s instructions Switch off and withdraw the mains plug when making or changing connections Do use only the power supply AC...

Page 4: ...be exposed to rain or moisture Above all Never let anyone push anything into holes slots or any other opening as this could result in a fatal electric shock Never guess or take chances with electrica...

Page 5: ...TV system 625p Audio L R x 1 Video I O AV3 Out Video Composite TV only x 1 Signal I P Analog D Sub 15 pin detachable cable PnP compatibility DDC 2B I P Frequency Analog FH 31kHz to 60kHz Fv 56Hz to 75...

Page 6: ...Hz 640x480 37 5 75 0 31 5 5 SVGA 56Hz 800x600 35 16 56 25 36 0 6 SVGA 60Hz 800x600 37 876 60 317 40 0 7 SVGA 72Hz 800x600 48 077 72 118 50 0 8 SVGA 75Hz 800x600 46 875 75 0 49 5 9 XGA 60Hz 1024x768 48...

Page 7: ...3 Connection Applications 5...

Page 8: ...be used with an external audio amplifier that can be used to control the volume z VCR Recording The main display must set to TV mode in order to use the audio and video output to record a program usin...

Page 9: ...ENU display the main menu CHANNEL down up change channels VOLUME turn up or turn down the volume ASPECT RATIO set up the ratio of display Normal Panscan Zoom or Full 7 ASPECT RATIO VOLUME CHANNEL down...

Page 10: ...ote Control The remote control pad works almost same as ordinary TV remote control that includes the basic function needed while viewing a live video DISPLAY Display the current source or program digi...

Page 11: ...D control bar Exit from the menu Changing Channels P P 0 9 DISPLAY RTN Press P or P to change Programs in TV mode or Teletext page in TELETEXT mode To select programs directly in TV mode Display the c...

Page 12: ...ent Press button Component S Video Video SCART RGB SCART Video TV To make the PIP window double large or small Press to move the PIP window to Top Left Top Right Bottom Right Bottom Left Repeat Other...

Page 13: ...r the Tuner Board needn t disassemble the Swivel Base and Back Cover 2 1 Press the hook on the left side of Tuner Cover and push toward the right direction Indicated as B 2 2 Remove the Tuner Cover by...

Page 14: ...from Neck Bracket and remove the Swivel Base Indicated as C 4 Back Cover Removal 4 1 Remove the Tuner Cover by pressing and sliding Indicated as B 4 2 Loosen 6 screws from the Back Cover Indicated as...

Page 15: ...m Right Left Side Covers Indicated as F 5 2 Loosen 2 screws from the 15 pin D Sub connector on the right side of the panel Indicated as F 5 3 Loosen 3 screws from the Tuner Board Indicated as G 5 4 Li...

Page 16: ...etallic Shield of Main PCB Indicated as H 6 2 Remove Metallic Shield of Main PCB from Main Bracket and then the Main Board shows up 7 MCU Removal if need 7 1 Clamp up the MCU by using an MCU clamp Ind...

Page 17: ...MOS Key Pad INVERTER I013 EEPROM 24C16 Power Supply LED IR Pad Remote Control 8 bit I006 ADC AD9883 110 24 bit Port B 24 bit Port A TTL I009 4 1 Audio Processor MSP3410G I010 Audio Amp BA5417 Scart Au...

Page 18: ...ngs double pictures or Ghosts will occur Adjust the aerial s location and direction Replace it with one with better directionality Turn off or disconnect the booster if it is in use as the booster may...

Page 19: ...Adjust BASS or TREBLE properly in OSD NS3 No sound in TV mode If the Country setting for the TV is incorrect it may prevent the sound from being issued Select the Country where you are located in OSD...

Page 20: ...Remote Control does not work Make sure the batteries in remote control are not flat Check the polarity of the batteries Use the remote control in the front of the TV or from less than seven meters aw...

Page 21: ...F001 Is the Voltage of L046 12V Is the Voltage of L045 5V Is the Voltage of I016 2 3 3V Is the Voltage of I015 2 2 5V No No No No Yes Yes Yes No Backlight No LED Is the Output of Adapter 12V Replace A...

Page 22: ...No Restart Signal to ensure H V sync are not absent Yes Reset the MCU I012 by pressing the power key or re plugging the DC 12V cable Replace I012 End End Still no Picture I012 MCU hangs temporarily Pr...

Page 23: ...place I018 SAA7118 Do all of the sources have No Picture Does PC have picture Do Scart Video S Video have pictures Does Component have picture Yes Yes No No No Yes End Still No Picture After replacing...

Page 24: ...of Child Lock is forgotten the only way to unlock the channels is to refresh EEPROM and the PIN will also recover initial number 1111 Besides all the STORE done by user will be refreshed to the situa...

Page 25: ...ings of PA18 firmly to P018 P019 Connect the wire firmly with the Interface of Panel Does the wire PA18 connect firmly with LCD Panel Does the wire PA18 connect firmly to P018 P019 Are the Outputs of...

Page 26: ...s also fed into I015 RC1117 to offer 2 5V supply and I016 RC1117 to offer 3 3V supply to other chips 2 PC Signal Refer to sheet 1 of PWB 0579 circuit diagram The analog R G B video signals are supplie...

Page 27: ...AV Signal A Video S Video Component Y Cb Cr Refer to sheet 9 of PWB 0579 circuit diagrams Video decorder I018 SAA7118 is able to decode the colour of PAL SECAM and NTSC signals into ITU 601 compatible...

Page 28: ...nc Mos SM59264C is operated with the 14 318 MHz Clock which is provided from Scaler I019 136 UCLK based on crystal X002 Pin 10 Reset C127 and R096 constitute a Reset circuit It provides a necessary ac...

Page 29: ...re Carrier 38 90 33 95 38 90 38 90 38 90 Colour 34 47 38 38 34 47 34 47 34 47 Sound 1 32 40 40 40 33 40 32 40 32 90 Sound 2 33 16 NICAM 33 05 39 80 33 05 33 05 32 348 Channel Coverage BAND Frequency M...

Page 30: ...ith 12V through P017 1 2 on main board and offers 10 5 mA typical to each lamp of backlight in LCD panel The On Off of the inverter is controlled by the voltage of P017 5 which is applied from I019 Sc...

Page 31: ...10 Circuit Diagram 10 1 Main Tuner Board PWB 0579 29...

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Page 42: ...10 2 Key LED board PWB 0475 40...

Page 43: ...11 PCB Layout 11 1 Main Tuner PCB PWB 0579 PWB 0579 Tuner 41...

Page 44: ...42...

Page 45: ...11 2 Key LED PCB PWB 0475 1 PWB 0475 2 43...

Page 46: ...1 PJ03 D SUB Conn Screw 5056309121 DIP Cen Link 13 1 P001 Scart Conn AJ 2050B 5556314100 DIP Jye Tai 14 3 P003 P007 P014 RCA JACK RED 5056307064 DIP S C 15 2 P004 P005 RCA JACK WHITE 5056307065 DIP S...

Page 47: ...10291 0603 4 4 C037 C352 C353 C354 47P 50V 5240647091 0603 5 23 C013 C016 C021 C059 C130 C131 C132 C133 C134 C135 C136 C137 C222 C223 C224 C246 C248 C250 C252 C317 C404 C405 C406 0 047U 50V 5230647391...

Page 48: ...002 D003 D010 D011 D012 D013 D014 D015 D031 D037 BAV99 7 75V 6613000555 SOT 23 DII MMBD7000LT1 6613003550 SOT 23 ON 23 3 D004 D005 D036 RLS4148 6613003059 SMD ROHM HSK120 6613003052 HITACHI 24 1 D017...

Page 49: ...33009 0603 YAGEO RAYAL 43 11 R011 R012 R020 R025 R031 R032 R033 R045 R046 R225 R226 75 5134375009 0603 YAGEO RAYAL 44 4 R104 R227 R233 R257 47K 5134347309 0603 YAGEO RAYAL 45 20 R023 R027 R050 R069 R0...

Page 50: ...6644036001 SMD PERICOM 71 5 I002 I003 I007 I008 I017 RC1117ST 33 6640003858 SOT 223 FAIRCHILD 72 1 I011 RC1117ST ADJ 6640003863 SOT 223 FAIRCHILD AP1117E ADJ 6640010155 SOT 223 ATC 73 1 I015 RC1117ST...

Page 51: ...03 YAGEO RAYAL 12 1 RT03 1K 5134310209 0603 YAGEO RAYAL 13 1 RT04 2 2U 16V 5230007791 0805 PHYCOMP TAIYO YUDEN TDK WALSIN 14 3 RT05 RT06 RT08 0 5134300009 0603 YAGEO RAYAL 15 1 RT21 100K 5134310409 06...

Page 52: ...ignal Cable 15p 5057415248 D Sub Liang San 4 1 PA06 Wire Ass y 4P 5057404347 Speaker Conn Liang San 5 1 PA17 Wire Ass y 7P 5057407072 Inverter Conn Liang San Great Land 6 1 PA18 Wire Ass y 60P 5057460...

Page 53: ...13 Mechanical Disassembly 51...

Page 54: ...410905 M14 NECK BRACKET 5648736500 M15 BASE COVER 5641411005 M16 BASE WHEEL 5648602000 M17 BASE BRACKET 5640406500 M18 VESA PLANE 5648731700 M19 CABLE HOLDER 5642606800 M20 WIRE HOLDER 5642606501 M21...

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