Summary of Contents for Asano LED2295
- Page 1 LCD TV SERVICE MANUAL SERVICE MANUAL SERVICE SERVICE MANUAL MANUAL CHASSIS : AS-MST6M182VG-LE2 MODEL :LED2295 CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
- Page 2 CONTENTS Contents ....................2 Product safety ..................3 Specification ..................7 Software upgrade..................10 Svc.sheet ....................17...
- Page 3 SAFETY SAFETY PRECAUTIONS PRECAUTIONS SAFETY SAFETY PRECAUTIONS PRECAUTIONS IMPORTANT IMPORTANT SAFETY SAFETY NOTICE NOTICE IMPORTANT IMPORTANT SAFETY SAFETY NOTICE NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, Fire, or other Hazards.
- Page 4 Leakage Leakage Current Current Check Check circuit circuit Leakage Leakage Current Current Hot Hot Check Check circuit circuit SERVICING SERVICING PRECAUTIONS PRECAUTIONS SERVICING SERVICING PRECAUTIONS PRECAUTIONS CAUTION CAUTION CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow CAUTION SAFETY PRECAUTIONS on page 3 of this publication.
- Page 5 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the unit under test.
- Page 6 Replacement Replacement Replacement Replacement 1. Carefully insert the replacement IC in the circuit board. 2. Carefully bend each IC lead against the circuit foil pad and solder it. 3. Clean the soldered areas with a small wire-bristle brush. (It is not necessary to reapply acrylic coating to the areas). "Small-Signal"...
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Page 7: Specification
copper pattern. Solder the overlapped area and clip off any excess jumper wire. At At At Other Other Other Other Connections Connections Connections Connections Use the following technique to repair the defective copper patternat connections other than IC Pins. This technique involves the nstallation of a jumper wire on the component side of the circuit board. - Page 8 5. 5. 5. 5. Chrominance Chrominance Chrominance & & & & Luminance Luminance Specification Chrominance Luminance Luminance Specification Specification Specification Item Unit Remark cd/m2 LC216EXN-SCA1 White peak brightness Contrast ratio cd/m2 Brightness uniformity Full white 0.622 0.344 0.338 GREEN Typ.. 0.618 Typ..
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Page 9: Hdmi Input
852*480 37.684 75.00 31.50 --> 640*480 60Hz Display 37.879 60.31 40.00 VESA 800*600 46.875 75.00 49.50 48.363 60.00 65.00 VESA(XGA) 1024*768 56.470 70.00 75.00 60.123 75.029 78.75 1280*768 47.78 59.87 79.5 WXGA 1360*768 47.72 59.8 84.75 WXGA 1366*768 47.56 59.6 84.75 WXGA 8. - Page 10 3) Magnetic Field Condition: Nil. 4) Input signal Unit: Product Specification Standard 5) Reserve after operation: Above 5 Minutes (Heat Run) Temperature : at 25±5ºC Relative humidity : 65±10% Input voltage : 220V, 60Hz * Download 1) Execute ISP program “Mstar ISP Utility” and then click“Config” tab. 2) Set as below, and then click “Auto Detect”...
- Page 11 5. Click “Auto” tab and set as below 6. Click “Run”. 7. After downloading, check “OK” message.
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Page 12: Troubleshooting
TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING TROUBLESHOOTING 1. 1. 1. 1. TV/CATV TV/CATV TV/CATV doesn doesn doesn’t t t t display display display TV/CATV doesn display Check U08 PinR6/T6(VIF), Could you measure voltage of U08 & IIC lines? Can you see the normal signal? Are they all normal? You should check power line &... - Page 13 2. 2. 2. 2. AV doesn doesn doesn’t t t t display display display AV doesn display Check CN16,CN28 Can you see the CN16,CN28 may have problem. normal waveform? Replace this Jack . Check the input of Main IC(U08) After checking the Power of Main Can you see the normal waveform? IC(U08)
- Page 14 3. 3. 3. 3. Component Component Component doesn doesn doesn’t t t t display display display Component doesn display Check CN24. CN24 may have problem. Replace this Can you see the normal waveform? Jack. Check U08 and peripheral devices? Check U08 and peripheral devices? This board has big problem because Main IC(U09) have some troubles.
- Page 15 4. 4. 4. 4. RGB doesn doesn doesn’t t t t display display display RGB PC PC doesn display Check CN10, CN10 may have problem. Replace this Can you see the normal waveform? Jack. After checking the Power of RGB Video Check the input of RGB Video switch, you should decide to replace RGB switch(U09) ,Can you see the normal...
- Page 16 5. 5. 5. 5. HDMI HDMI HDMI doesn doesn doesn’t t t t display display display HDMI doesn display Check input connect CN14 Can you see CN14 may have problem. Replace this the normal waveform? Jack. Check communication After checking the Power of this chip, you lines(CN14-Pin15,16) should decide to replace this or not.
- Page 17 SCHEMATIC DIAGRAM SCHEMATIC SCHEMATIC SCHEMATIC DIAGRAM DIAGRAM DIAGRAM +12V_PWR C275 0.01uF L33 18uH/4A DC TO DC DC TO DC DC TO DC DC TO DC +5V _Standby +1.2V_V DDC CN21 12p/2.0 R3 220R R4 2.7K U01 FP6161 18uH/2A 100 0mA +5V _Nor mal BL-A DJUS T R8 NC/1K...
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Page 18: Reset Circuit
DDR2 VREF Normal Power 1.2V Normal Power 1.2V Normal Power 1.2V Normal Power 1.2V VDDC +1 .2V_VDDC 1K_1% R104 AVDD_DDR MDDR_VREF Normal Power 2.5V Normal Power 2.5V Normal Power 2.5V Normal Power 2.5V L101 FB/0603 IC MST6M181VG, MST6M182VG , +2 .5V_Normal ADC2P5 250mA R104, R106, C114... -
Page 19: Scart Input
CN15 SCART/NG SCART INPUT SCART INPUT SCART INPUT SCART INPUT AV2_ V AV_VOUT SC_FB AV3_in Blanking I/O CN28 6P RCA INPUT R543 SC_FB AV3_in SCART-Rin HD_Y R502 RGB2-HDTV_GIN RGB2-HDTV_GIN RGB2-HDTV_SOGIN R503 RGB2-HDTV_SOGIN SCART-G HD_Y SCART-G HD_Pb HD_Pb R505 RGB2-HDTV_BIN RGB2-HDTV_BIN HD_Pr CN11 SCART-Bin... - Page 20 HDMI1-SDA SDA2 R251 HDMI2 HDMI2 HDMI2 HDMI2 HDMI1-SCL SCL2 CN14 R249 HPD_SINK HPD2 IN2D2+ HDMI2-RX2+ HDMI1-RX2P IN2D2+ R254 DATA2+ HDMI1-RX2N IN2D2- R250 DATA2 SHIELD IN2D2- HDMI2-RX2- HDMI1-RX1P IN2D1+ R253 DATA2- IN2D1+ HDMI2-RX1+ HDMI1-RX1N IN2D1- R257 DATA1+ HDMI1-RX0P IN2D0+ GND1 R255 DATA1 SHIELD IN2D1- HDMI2-RX1-...
- Page 21 For HVDD=12V Load=4ohm 0/1206 +12V_NORMAL R901 NC/68R OP_VCC +12V_NORMAL AMP-R AMP-L AMP-Lin SP_L+ C301 2.2u R406 10K IN-1 OUT-1 CA90 470uF C903 R906 AMP_AUOUTR0 0/2.2uF 0/10K Q901 PIN 8 Note: PIN 8 Note: PIN 8 Note: PIN 8 Note: AMP_AUOUTR0 NC/3904 HIGH:OPERATING(8.5V-VCC) HIGH:OPERATING(8.5V-VCC)
- Page 22 +33V R134 R192 GATE R192A EC40 EC40A R197A R135 +24VB R128 R209 R136 R138 EC21 R129 R197 R198 EC20 EC23 EC22 R137A R137 2 DB3 R104 PS-ON 2 DB4 R193 R108 EC11 R199 EC16 +12VA +12VB EC41 R109 R139 C50A R130 R200 EC36...
- Page 23 LED9 LED8 LED12 LED3 LED2 LED6 OSP2 OSP2 OSP2 OSP2 OSP2 OSP2 LED7 LED10 LED11 LED1 LED4 LED5 LED1 LED3 LED5 OSP2 LED2 LED4 LED6 Q29A +24V R116 LED+ +12V VCC1 VCC1 R117 VCC1 R160 EC18 R162 R163 R120 R180 R181 R182 R203...
- Page 24 OSP2 OSP2 OSP2 OSP2 SGND SGND VCC1 VCC1 CON5 LED+ CON2 LED+ LED+ CON3 LED2 LED4 CON10 CON6 LED+ LED+ +12V CON4 LED1 LED+ LED6 BK/ON PS-ON +24V LED3 +12V +12V +12V +12V +5VSB LED5 R126A R124A SGND SGND LED+ LED+ LED+ CON11...
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