Related Manuals for Akai LM-H27CJSA
Summary of Contents for Akai LM-H27CJSA
-
Page 1: Service Manual
Service Manual AKAI 27”/ 30” 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 for 27”......……………………….…..3 2.2 Specification for 30”......……………………….…..4 2.3 PC I/P Preset Timing Table.............…..5 3. Connection & Applications……………………..........…..6 4. Controls Location ................……………….8 5. Remote Control................………………..9 6. Disassembly Instructions.......…………………………….……..……..12 7. Block Diagram............………………………………….18 8. -
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.
-
Page 5: Specifications
2. Specifications 2.1 Specification for 27”: ITEMS SPECIFICATION Screen size 27” Wide TFT-LCD Panel (CMO) 16：9 Aspect Ratio Resolution 1280 x 720 (Wide-XGA) Contrast Ratio 500 : 1 (Typical) Display Brightness 500 cd/m² (Typical) Viewing Angle 170° (Hor.) / 170° (Vert.) Response Time : Ton / Toff 15ms / 10ms OSD Language... -
Page 6: Specification For 30
2.2 Specification for 30” : ITEMS SPECIFICATION Screen size 30” Wide TFT-LCD Panel (CMO) 16：9 Aspect Ratio Resolution 1280 x 768 (Wide-XGA) Contrast Ratio 500 : 1 (Typical) Display Brightness 500 cd/m² (Typical) Viewing Angle 170° (Hor.) / 170° (Vert.) Response Time : Ton / Toff 15ms / 10ms OSD Language... -
Page 7: Pc I/P Preset Timing Table
2.3 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 8: Connection & Applications
3. Connection ＆ Applications SCART VIDEO S-VIDEO Component Pb/Cb Pr /Cr AC IN... - Page 9 D-SUB CONNECTOR PC AUDIO IN HEAD PHONE AUDIO IN 1 / OUT(R/L) AUDIO IN 2 (R/L) 75Ohm AERIAL INPUT SOCKET HEAD PHONE SPEAKERS VIDEO AERIAL NOTE: Audio out : The level of audio output cannot be changed using the volume , treble , and bass controls on your TV .
-
Page 10: 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 11: 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 12: 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 13: 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 14: 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 , need not disassemble the Base and Back Cover. - Page 15 3. Base Removal : 3.1 Remove 5 screws from the bottom of the Base. (Indicated as “ A ”) 3.2 Push upward and take the Base apart from the Neck. (Indicated as “ Arrow ” ) 4. Neck Removal : 4.1 Remove 2 screws from Neck Cover.
- Page 16 4.3 Remove 4 screws from the Neck and then take Neck apart from the Back Cover. (Indicated as “ C ”) 5. AV Cover (I/O Board) Removal : 5.1 Loosen 2 screws. ( Indicated as “ E ”) 5.2 Pull out the AV Cover (I/O Board) directly. ( Indicated as “...
-
Page 17: Back Cover Removal
6. Back Cover Removal: 6.1 Remove 8 screws from the Back Cover . ( Indicated as “ F ” and “ G ”) 6.2 Take Back Cover apart from the LCD-TV. 7. Right / Left Side Covers Removal : 7.1 Remove 4 screws from 2 Slides of I/O Board & Right Side Cover. (Indicated as “ H ”) 7.2 Remove 3 screws from the Power Case Assembly. - Page 18 8. Main PCB Shield Removal : 8.1 Remove 2 screws from Main PCB Shield. (Indicated as “ K ” ) 8.2 Remove 2 Hexagonal screws from the D-Sub Connector. (Indicated as “ K’ ”) 8.3 Take Main PCB Shield apart from Panel Bracket . K’...
- Page 19 10. Panel Bracket Removal : 10.1 Remove 5 screws from the Panel Bracket . (Indicated as “ M ”) 10.2 Take Panel Bracket apart from the Front Cover . -17-...
-
Page 20: Block Diagram
7. Block Diagram 10W + 10W I021 Speaker Audio Amp. UT01 I044 LA4282 Headphone Jack TV – Tuner 4:1 Audio Processor Mono FQ1216 MK3 MSP3410G Scart Audio Out Scart Audio Component Video Video/S-V/ Component Audio I034 Line-out (RCA) PC Audio P15V330 Audio Out I011... -
Page 21: 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 22 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 23 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 . •...
-
Page 24: Flow Chart ( For Repair Center Use)
8.2 Flow Chart ( for Repair Center Use ) (1) Power Start NG No Backlight & No LED Is the Voltage of P803#10 5V & PB01 Replace P803# 4 24V ? (Power Module) (on Power Module) Is the Voltage of connectors Check L139 24V ? -
Page 25: 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) P802 & P802A Display ? ( from Power to I019 (Scaler) Inverter) POWER Press key &... - Page 26 (3) No picture , but Backlight & LED light up No Picture , but Backlight & LED light Up Is the Voltage of L042 5V Replace Q003/I027/L095 (Panel 5V I/P) ? Do all of the Replace Does have sources have No I001 picture? Picture ?
- Page 27 (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 28 (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 I019 (TP6760) P005A connect P005A connect V901 Replace normal ? firmly with LCD firmly to P005 ? (LCD Panel )
-
Page 29: Electronic Circuit Description
9. Electronic Circuit Description 9.1 Main Board Circuit 1) Power Refer to sheet 7 of PWB-0663 circuit diagram. AC 110V~220V is applied to the LCD-TV through socket P801 on PB01 ( Power module: PWB-0656) . PB01 (Power module: PWB-0656) outputs DC+24V to Inverter U901 via P802 #1~#5 . - Page 30 3) TV Signal Refer to sheet 4 、 8 、 9 of PWB-0663 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 31 5) Panel interface Refer to sheet 6 of PWB-0663 circuit diagrams. The signals of panel interface are all applied from Scaler I019 (TP6760) to LCD Panel through connector P005 and wire P005A . The signals CLK 、 DE 、 V.SYNC 、 H.SYNC from I019 #90,#92~94 are applied to LVDS IC I014 # 31,#30,#28,#27 and output PCLK-,PCLK+ at #39,#40 .Then , signals are applied to Panel via connector P005 #7, #6 and used for panel display controls.
- Page 32 9.2 Tuner Board Circuit Refer to Tuner Board circuit diagrams of PWB-0564 in Chapter 10.3. 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 PT01 #23 、...
- Page 33 9.3 Key、LED&IR Board Circuit Refer to Key 、 LED & IR circuit diagram of PWB-0565 in Chapter10.2 and sheet 5 of PWB-0663 circuit diagram(Main Board). * Key : The Keyboard is connected with Main Board through socket P021 and wire P021A and to control the I012 (MCU) .So , if the operation of key is fail , the I012 (MCU) may fail .
-
Page 34: Circuit Diagram
10. Circuit Diagram 10.1 Main Board (PWB-0663) -32-... - Page 35 -33-...
- Page 36 -34-...
- Page 37 -35-...
- Page 38 -36-...
- Page 39 -37-...
- Page 40 -38-...
- Page 41 -39-...
- Page 42 -40-...
- Page 43 -41-...
-
Page 44: Key , Led&Ir Board
10.2 Key , LED&IR Board (PWB-0565 -42-... -
Page 45: Tuner Board
10.3 Tuner Board (PWB-0564 -43-... -
Page 46: I/O Board
10.3 I/O Board (PWB-0638 -44-... -
Page 48: Pcb Layout
11. PCB Layout 11.1 Main Board PCB (PWB-0663) : -45-... - Page 49 -46-...
-
Page 50: Key , Led&Ir Board Pcb
11.2 Key , LED&IR Board PCB (PWB-0565) 11.3 Tuner Board PCB (PWB-0564) -47-... -
Page 51: I/O Board Pcb
11.4 I/O Board PCB (PWB-0638) -48-... -
Page 52: Electrical Parts List
12. Electrical Parts List 12.1 Main Board ( PWB-0663 ) Main PCB / MCU / Dip Parts Item pc’s Circuit No. Part Spec. Part No U0663 PCB : PWB-0663 5053106630 I012 MCU : SM59264C 6647021813 Sync.MOS. C559 470U/35V 5213547112 CAPXON C560,C566 1000U/25V 5214021401... - Page 53 Main Board SMD Parts Item pc’s Circuit No. Part Spec. Part No Type C035,C127,C284,C527,C532, 4.7U/16V 5218014791 SMD C558 C003,C004,C005,C006,C007, C008,C009,C010,C011,C012, C014,C015,C017,C019,C020, C022,C023,C024,C025,C027, C028,C030,C034,C036,C042, C046,C049,C050,C051,C052, C053,C054,C055,C056,C057, C060,C061,C063,C065,C066, C067,C068,C069,C070,C073, C075,C078,C080,C082,C083, C084,C126,C128,C192,C200, C202,C212,C218,C220,C222, 0.1U / 25V 5230005491 0603 C223,C224,C226,C227,C228, C229,C230,C236,C237,C238, C241,C249,C251,C253,C254, C255,C262,C263,C264,C265, C266,C267,C268,C271,C272, C275,C276,C277,C278,C280, C281,C290,C291,C292,C293, C294,C295,C319,C323,C326,...
- Page 54 Item pc’s Circuit No. Part Spec. Part No Type C138,C139,C140,C338,C337, C341,C342,C363,C364,C368, C369,C370,C371,C372,C373, C374,C375,C376,C380,C381, 330P 5240633191 0603 C382,C521,C516,C533,C515, C505,C535,C512,C536,C563, C562,C567,C568,C572,C571, C564,C565,C569,C570 C001,C044 0.0082U/50V 5230682291 0603 C002,C045 0.082U 5230019091 0603 C201,C548,C555,C561 100U/16V 5218007991 SMD 6x5 C031,C079,C146,C147,C148, C149,C154,C155,C156,C157, C163,C164,C165,C166,C171, C172,C173,C174,C179,C180, 27P/50V 5240627091 0603 C181,C182,C187,C188,C189, C190,C282,C283,C285,C286, C287,C288,C289...
- Page 55 Item pc’s Circuit No. Part Spec. Part No Type L001,L003,L004,L006,L007, L008,L009,L011,L012,L015, L017,L048,L049,L050,L051, MLB-2012-150 5062133008 0805 L052,L054,L056,L063,L071, L089,L092,L109,L110,L112 L031,L058,L067,L041,L047, HU-1H4516-600J 5062120135 1806 L095 L005,L020,L022,L030,L039, L040,L043,L044,L045,L046, L055,L059,L062,L064,L065, L072,L073,L074,L075,L076, MLB-201209-00600L-N2 5062133011 0805 L077,L078,L079,L087,L091, L094,L097,L111,L113,L114, L115,L116,L117,L118,L119, L120,L121,L122 LP13,LP14,LP15,LP16,LP17, MLB-3216-0030M4-N2 5062128504 Bead Array LP18 LP01,LP03,LP05,LP07,LP09, MLB-3216-0240M4-N3 5062128505 Bead Array LP11 P005...
- Page 56 Item pc’s Circuit No. Part Spec. Part No Type R063 5134324309 0603 R041,R060 5.1K 5134351209 0603 R014,R055,R059,R179,R180, 5134310009 0603 R181,R182,R184,R189 R022,R118,R153,R154,R233 2.2K 5134322209 0603 R003,R036,R061 2.7K 5134327209 0603 R001,R002 5134330109 0603 R140 5134324109 0603 R112 5134339109 0603 R028,R029 5134347009 0603 R088,R089,R113,R114,R142, 2.4k 5134324209 0603...
- Page 57 Main Board SMD IC Item pc’s Circuit No. Part Spec. Part No I005,I025 74F14 6646021451 FAIRCHILD P15V33690Q 6644036001 PERICOM I034,I010 FAIRCHILD RC1117ST 33 6640003858 I002,I003,I007, AP1117E-3.3 6640010150 I008,I017 6640003867 FAIRCHILD I015 RC1117ST 25 6640010159 AD9883A-110 6649001852 I006 I001 AD9883A-140 6649001853 24C02 6647051862 CATALYST...
- Page 58 12.2 Tuner Board ( PWB-0564) Item pc’s Circuit No. Part Spec. Part No U0564 PWB-0564 5053105640 RT02,RT07,RT21, 5134300009 CT07 YAGEO,RAYAL 5134310209 RT03 PHYCOMP,TAIYO 0.1uF 5230005491 CT02,CT05 YUDEN, 5240647091 CT06 TDK,WALSIN 100uF/16V 5218007991 CT01 NIPPON CHEMICON 10U/16V 5218007891 CT03 47U/16V 5218008991 PANASONIC CT08 Coil Peaking 100uH 5064410129 TDK...
- Page 59 12.5 Key Board ( PWB-0565 ) Item pc’s Circuit No. Part Spec. Part No U0565 KEY/LED BOARD 5053105650 J611,J612,J613 WIRE 6119210605 TATUNG P602 S10B-PH-K , Base&Pin 5056416038 JST,JWT S601,S602,S603, Tact Switch 5054512951 FORWARD S604,S605,S606, S607,S608 12.6 Power Module / Panel / Inverter /Accessories Item pc’s Circuit No.
-
Page 60: Mechanical Disassembly
13. Mechanical Disassembly 13.1 Exploded Drawing of 27 ” : -57-... - Page 61 13.2 Exploded Drawing of 30” : -58-...
-
Page 62: Mechanical Parts List
14. Mechanical Parts List 14.1 Parts List of 27” : CKT NO. PARTS NO. DESCRIPTION FRONT COVER 5642292101 SP-SCREEN 5642317800 NON-WOVEN FABRICS 5642028106 METAL-MESH-SPEAKER 5642514000 IR LENS 5040331300 INSULATION-INVERTER 5646503600 5642725600 LCD MBRACKET TUNNER PCB CLAMP 5642678700 5642847107 BRASS SPACER WIRE MOUNTS 5642679000 POWER PCB SHIELD... - Page 63 14.2 Parts List of 30” : CKT NO. DESCRIPTION PARTS NO. Front Cover 5642291902 Back Cover 5642292002 Neck Front Cover 5641412503 Neck Back Cover 5641412603 Base 5641412703 AV Cover Hole 5642420202 AV Cover 5642318004 Signal Cover 5642318104 Tuner Cover 5642318204 IR Lens 5640331300 Tuner PCB Clamp...
- Page 64 CKT NO. DESCRIPTION PARTS NO. AV Cover Screw 5640228300 Speaker Screw 5640228400 M2x5 S-Ni 7001070514 PZP M4X12 S-ZN 7134251682 M4X8 S-ZN 7004261112 BFB M4X12 S-ZN 7034251652 PPW M4X12 7000311132 M4X6 S-ZN 7001260612 M3X8 S-ZN 7134161180 PPW M3X6 S-ZN 7000311032 PPW M3X10 S-ZN 7000311042 -61-...