Related Manuals for Akai LM-H17CLSA
Summary of Contents for Akai LM-H17CLSA
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Page 1: Service Manual
Service Manual AKAI 17” Wide Screen LCD Multi-Media Display... -
Page 2: Table Of Contents
Table of Contents 1. Safety and Precautions …………………………………………………………1 2. Specifications............………………………………3 2.1 Specification.........……………………….…..3 2.2 PC I/P Preset Timing Table.............…..4 3. Connection & Applications……………………..........…..5 4. Controls Location ................……………….7 5. Remote Control................………………..8 6. Disassembly 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. -
Page 3: Safety And Precautions
1. Safety and Precautions CAUTION * The service of this LCD-TV must be carried out by qualified persons only. * Do not change any module unless the set is switched off. CLEANING：Always disconnect unit from mains supply before attempting to clean it. Use soft cloth moistened with soapy water, wipe gently. - Page 4 Don’t listen to headphones at high volume, as such use can permanently damage your hearing. Don’t obstruct the ventilation of the equipment, for example, with curtains or soft furnishings. Overheating will cause damage and shorten the life of the equipment. Don’t allow electrical equipment to be exposed to rain or moisture.
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Page 5: Specifications
2. Specifications 2.1 Specification : ITEMS SPECIFICATION Screen size 17” Wide TFT-LCD Panel (Fujitsu) 16：9 Aspect Ratio Resolution 1280 x 768 (Wide-XGA) Contrast Ratio 400 : 1 (Typical) Display Brightness 400 cd/m² (Typical) Viewing Angle 160° (Hor.) / 160° (Vert.) Response Time : Ton / Toff 15ms / 10ms OSD Language... -
Page 6: Pc I/P Preset Timing Table
2.2 PC I/P Preset Timing Table : Analog Input Pixel Mode Name H.Freq. (kHz) H. Polarity Mode No. Resolution V.Freq. (Hz) V. Polarity (MHZ) VGA 70Hz 31.469 25.175 640x350 70.087 VGA 60Hz 31.469 25.175 640x480 59.941 VGA 72Hz 37.861 31.5 640x480 72.81 VGA 75Hz... -
Page 7: Connection & Applications
3. Connection ＆ Applications... - Page 8 (for TV only) NOTE: Audio out : The level of audio output cannot be changed using the volume , treble , and bass controls on your TV . These connectors should be used with an external audio amplifier that can be used to control the volume. VCR Recording: The main display must set to TV mode in order to use the audio and video output to record a program using a VCR .
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Page 9: Controls Location
4. Controls Location The buttons control your TV’s basic features, including the on-screen menu. To use the more advanced features, you must use the remote control. POWER: turn on or turn off the LCD TV. SOURCE: set up the input source (PC, TV, SCART Video/ SCART RGB , Video, S-Video, Component) MENU: display the main menu. -
Page 10: Remote Control
5. Remote 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 digits . -
Page 11: Summary Of Control Buttons
Summary of Control Buttons Selecting the Signal Source Switch to the TV mode. Switch to the PC mode. SCART Switch to the Video mode or RGB mode from SCART. VIDEO/S-V Switch to the Video mode from RCA socket or S-Video mode. COMPONENT Switch to the Component mode (YPbPr or YCbCr). -
Page 12: Other Function
REVEAL Press “REVEAL“ button to display concealed information, such as solutions of riddles or a quiz. EXPAND Press “EXPAND“ button to enlarge the top half or bottom half of the Teletext page. SUB-PAGE/TIME Press “SUB-PAGE/TIME“ button to access to the sub-page you required. -
Page 13: Disassembly Instructions
6. Disassembly Instructions 1) Face down the LCD-TV : Face down the LCD-TV on a smooth plane with a soft material to protect the panel faceplate . 2) Tuner Board Removal : Note: If only repair the Tuner Board , needn’t disassemble the Swivel Base and Back Cover . - Page 14 3) Swivel Base Removal : 3.1 Loosen 2 screws and remove Neck Cover . (Indicated as “A” ) 3.2 Loosen 4 screws 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 .
- Page 15 5) Right & Left Side Covers Removal : 5.1 Loosen 4 screws from 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’...
- Page 16 6) Metallic Shield Removal : 6.1 Loosen 8 screws from Metallic 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.
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Page 17: Block Diagram
7. Block Diagram 3.5W + 3.5W UT01 I009 I010 Speaker TV – Tuner 4:1 Audio Processor Audio Amp. Mono FQ1216 MK3 MSP3410G BA5417 Headphone Jack Scart Audio Video Line-out (RCA) Video/S-V/ Component Audio Scart Audio Out PC Audio I029 TT Decorder SAA5264PS 17”LCD I019... -
Page 18: Troubleshooting
8. Troubleshooting 8.1 Symptom Codes ( for Call Center use ) CODE SYMPTOM COUNTERMEASURES • No Picture and No Sound Make sure the Power cord and Aerial Cable are in TV mode. properly connected . • Make sure the batteries in remote control are not flat. •... - Page 19 CODE SYMPTOM COUNTERMEASURES • Stripe noise . Check the coaxial cable connected with the TV is not oxidized • Do not use 300 ohm twin lead cables as interference may occur • It is recommended to use a 75 ohm coaxial cable (not supplied) to get premium quality picture.
- Page 20 CODE SYMPTOM COUNTERMEASURES • “Out of Range” message Maximum PC resolution supported is 1024x768 / 1280 x 768, so the screen will appear “Out of range” at higher resolution. • Reduce the resolution to 1024x 768/ 1280x 768 from PC . •...
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Page 21: Flow Chart ( For Service Center Use)
8.2 Flow Chart ( for Repair Center Use ) (1) Power Start NG No Backlight & No LED ADP8 Replace Is the Output of Adapter 12V ? AC Adapter F001 Replace Is the Voltage of L046 12V ? Replace Is the Voltage of I014 &... -
Page 22: Power Key
(2) No Backlight , but LED lights up No Backlight ,but LED lights up Still No Replace backlight Which Color does Green Check & Re-plug U901 (Inverter) PA17 (from Inverter) Display ? I019 (Scaler) POWER Press key & Is it entering into Reset the MCU(I012) by DC 12V Adapter Re-plug... - Page 23 (3) No picture , but Backlight & LED light up No Picture , but Backlight & LED light Up Is the Voltage of L044 5V Replace Q003/I025/L042 (Panel 5V I/P) ? Do all of the Replace Does have sources have No I001 picture? Picture ?
- Page 24 (4) Picture Abnormal or Halt Picture Abnormal / Halt Steps to Refresh EEPROM : StepsM After pressing 1. Press POWER key to turn off RESET button ,does the the LCD-TV. picture recover normal? 2. Press CH. Down key on the top of LCD-TV (don’t release ) and then press POWER After pressing...
- Page 25 (5) Frame Defects or Striped Lines at all sources The Ver. or Hor. Sync. haven’t been held at all sources. Are the Outputs of Does the wire Does the wire PA18 I019 (TP6760) PA18 connect connect firmly to V901 Replace normal ? firmly with LCD P018 &...
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Page 26: Electronic Circuit Description
9. Electronic Circuit Description 9.1 Main Board Circuit 1) Power Refer to sheet 7 of PWB-0579 circuit diagram. DC +12V output of AC adaptor is applied to the LCD-TV through socket P020. This supply is fed directly to P017#1、2 (Connector to Inverter) and I010#4 (Audio Amp. - Page 27 3) TV Signal Refer to sheet 11、8、9 of PWB-0579 circuit diagrams. The IEC plug on tuner UT01 receives TV picture and Sound signals from aerial .Tuner UT01(Tuner-FQ1216ME/MK3) is a multi-standard TV tuner for CCIR B/G, D/K, I, L/L’ system and the front-end has a built-in digitally (I C) PLL tuning system .
- Page 28 5) Panel interface Refer to sheet 6 of PWB-0579 circuit diagrams. The signals of panel interface are all applied from Scaler I019(TP6760) to LCD Panel through connector P018、P019 and wire PA18. The signals SHFCLK、PDE、 PVYSNC 、 PHSYNC from I019 #90~94 are applied to LCD panel via connector P018. These four signals are used for panel display controls.
- Page 29 9.2 Tuner Board Circuit Refer to sheet 11 of PWB-0579 circuit diagrams. UT01(Tuner-FQ1216ME/MK3) is a multi-standard TV tuner for CCIR B/G, D/K, I, L/L’ system and the front-end has a built-in digitally (I C) PLL tuning system . The Output of Composite Video from QT01 #Emitter fed with Tuner UT01 is applied to SAA7118 through P013#10 .
- Page 30 9.3 Key、LED&IR Board Circuit Refer to Key、LED and IR circuit diagram of PWB-0475 in Chapter10.2. * Key : The Keyboard is connected with Main Board through socket P021 and wire PA21 and to control the I012 (MCU) , so if the operation of key is fail , the I012 (MCU) may fail .
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Page 31: Circuit Diagram
10. Circuit Diagram 10.1 Main & Tuner Board (PWB-0579) -29-... - Page 32 -30-...
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Page 42: Key & Led Board
10.2 Key & LED board (PWB-0475 -40-... -
Page 43: Pcb Layout
11. PCB Layout 11.1 Main & Tuner PCB (PWB-0579 & PWB-0579-Tuner) : -41-... - Page 44 -42-...
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Page 45: Key & Led Pcb
11.2 Key & LED PCB (PWB-0475-1 & PWB-0475-2) -43-... -
Page 46: Electrical Parts List
12. Electrical Parts List 12.1 Main Board (PWB-0579 ) Main PCB / MCU / Dip Parts Item pc’s Circuit No. Part Spec. Part No. Type Vendor I012 MCU: SM59264C 6647021813 PLC44 Sync.MOS. U0579 PWB-0579 5053105790 4 Layers Gia-Tzoong,TKE CHINSAN C083,C192,C193 470U/25V 5205447102 TEAPO... - Page 47 SMT Parts Item pc’s Circuit No. Part Spec. Part no. Type Vendor C035,C127,C284,C394 4.7U/16V 5218014791 CAPXON C003,C008,C011,C019,C022, C028,C034,C036,C042,C046, C049,C050,C052,C053,C054, PHYCOMP C055,C056,C057,C060,C061, TAIYO C063,C065,C066,C067,C068, YUDEN C069,C070,C073,C075,C078, C117,C126,C128,C195,C196, WALSIN C200,C202,C205,C218,C221, C236,C237,C238,C241,C262, C263,C264,C265,C266,C267, 0.1U/25V 5230005491 0603 C268,C271,C272,C275,C276, C277,C278,C280,C281,C290, C291,C292,C293,C294,C295, C323,C325,C331,C332,C333, C334,C335,C336,C337,C338, C366,C368,C375,C380,C390, C391,C392,C396,C401,C402, C403,C407,C409,C410,C412 , C416,C418, C419 C009,C018,C020,C047,C048,...
- Page 48 Item pc’s Circuit No. Part Spec. Part no. Type C088,C089,C113,C114,C120, C122,C123,C124,C125,C225, PHYCOMP C226,C251,C253,C254,C255, TAIYO C256,C257,C258,C259,C260, YUDEN 330P/50V 5240633191 0603 C261,C269,C270,C326,C327, C328,C329,C330,C339,C340, WALSIN C341,C342,C343,C344,C347, C348,C349,C399,C400 C107,C094,C372 0.15U/16V 5230019191 0603 C233,C232 22P/50V 5240622091 0603 C382,C383,C414,C415 56P/50V 5240656091 C026,C029,C032,C033,C074, NIPPON CHEMICON C071,C076,C077,C085,C115, C116,C197,C198,C199,C203, 10U/16V 5218007891 C204,C220,C273,C274,C279,...
- Page 49 Item pc’s Circuit No. Part Spec. Part no. Type Vendor L076,L077,L078,L091,L092 MLB-201209-0120A-N4 5062122981 0805 MAGLAYES L003 MLI-201209-R15K 5062132412 0805 MAGLAYES L079,L080,L081,L082,L083, MLB-201209-1500 5062133023 0805 MAGLAYES L084,L085,L086 LP01,LP02,LP03,LP04,LP05, LP06,LP07,LP08,LP09,LP10, MLB-3216-0030M4-N2 5062128504 Bead Array MAGLAYES LP11,LP12 RP01,RP02,RP03,RP04,RP05, MLB-3216-0220M4-N3 5062128505 Bead Array MAGLAYES RP06 P018 20P*2 MDS240320...
- Page 50 Item pc’s Circuit No. Part Spec. Part no. Type Vendor R008,R009,R010,R042,R043, R044,R107,R250,R251,R277, 5134310109 0603 YAGEO,RAYAL R278,R280 R128,R129,R130,R132,R258, R259,R260,R288,R299,R300, 5134318009 0603 YAGEO,RAYAL R301,R302,R303,R304,R320 R133,R134,R135,R136,R261, R262,R263,R289,R305,R306, 5134356009 0603 YAGEO,RAYAL R307,R308,R309,R310,R321 R190 5134310509 0603 YAGEO,RAYAL RP07,RP08,RP09,RP10,RP11, RP100x4 5160310900 Array x 4 YAGEO RP12,RP19,RP20 I005 74F14 6646021451...
- Page 51 12.2 Tuner Board (PWB-0579-Tuner) Item Pc’s Circuit No. Part Spec. Part No. Type Vendor CT01 100U/16V 5218007991 SMD 6x5 NIPPON CHEMICON PHYCOMP , TAIYO CT02,CT05 0.1U/25V 5230005491 0603 YUDEN, TDK , WALSIN CT03 10U/16V 5218007891 NIPPON CHEMICON CT06 47P/50V 5240647091 0603 CT10 47U/16V...
- Page 52 Power Cord Black 1.8m 5056706150 SP-28/IS-14 I-Sheng ADP8 ADAPTER FSP060/60W 5061370331 1AD101C RT01 Remote Control Akai 5000100094 RM-L1703 Forward Y001 IB ( I ) Akai 5030057010 Tatung Y002 Warranty Card Akai 5030250015 Tatung Y003 IB ( II ) Akai 5030057027 Tatung -50-...
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Page 53: Mechanical Disassembly
13. Mechanical Disassembly -51-... -
Page 54: Mechanical Parts List
14. Mechanical Parts List PARTS NO. DESCRIPTION SP-SCREEN 5642382104 FRONT COVER 5642288709 IR LENS 5642382200 LCD MBRACKET 5642722701 RIGHT D-SUB COVER 5642420005 LEFT YPBPR COVER 5642421103 MPCB SHIELD 5646250602 MPCBSHIELD-2 5646251700 5642847102 FUNCTION KEY BACK COVER 5642288806 TUNNER COVER 5642420104 HAND BACK 5642901104 NECK BACK COVER...