Akai LEA-19V07P Service Manual Download Page 29 | Manualshive

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Model No.: LEA-22V07P

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Summary of Contents for LEA-19V07P

Page 1: ...LEA 19V07P LEA 22V07P LEA 24V07P...

Page 2: ...tant Safety Instructions 3 Basic Trouble Shooting 4 Main Board Trouble Shooting 5 Main Board Circuit Diagram 14 Panel Interface Pin Connection 25 General Trouble Shooting 33 Software Upgrading Methods...

Page 3: ...o remove dust from the screen surface wipe gently with a clean soft and cotton free dry cloth Do not use any type of abrasive pad alkaline acid cleaner or strong solvent such as alcohol thinner or ben...

Page 4: ...the LED driver board If the backlight works normal but no display or no picture on the screen please check whether the power supply to the panel 5V is right or not If not need to check whether the sw...

Page 5: ...Main Board Trouble Shooting 5...

Page 6: ...t Y N It s normal but the voltage is high It s normal but the voltage is Low Check if pin N 4 f U7 U4 AIC2857GR8TR damage L2 10 H is damaged or false welding No 4 for U7 RT8269GSP is false welding or...

Page 7: ...correct and connected tightly and connected tightly Y N Check if the LCD panel is OK N Y Check if the output circuit from U12 to the jack to panel are normal Y N Change the cable for panel Change LCD...

Page 8: ...nel N Y Is there voltage on grid of Q8 WPM3407 can changed 12 0V or 5V 0 Is there output signal from U12 N Y Y N CN4 is ill connected is there voltage for panel or Q8 is damaged Check if the circuit o...

Page 9: ...reen Black screen Check if the voltage on CN13 BLON is 5V N Y Check if the power supply for inverter is normal Y N Check the control circuit from BLON to U12 or U12 is damaged Repair the power supply...

Page 10: ...power supply 11V on pin no 7 of U13 1517P Is normal Y N Check the voltage 9 2V on pin no 8 Of U13 N Y Y N Check external Check the signal output on pin 64 65 of U12 Y N Does it has signal input on U12...

Page 11: ...T2 pin5 6 has data for I2C N Y Check if t1 pin9 10have data N Y Check if T2 pin2 for variational voltage within 1 8V 4 3V N Y Check the circuit from T2 pin9 10 to U12 Check the circuit in this part C...

Page 12: ...heck if the R G B input signal of U12 is normal Y N Check if the signal of V sync H sync is OK Y N Y N Y N Do auto adjust process Do reset process on the menu Check the circuit of R G B input Check th...

Page 13: ...al Ch k if R G B i t Check if the U12 6M181 i 43 Check if R G B input of U12 is normal Y N U12 6M181 pin43 have signal input Check the circuit Y N 1 HDMI interface false welding 2 System setting wrong...

Page 14: ...V 5V_SW Power_ ON R23 NC 10Kohm 0402 5 1 16W R37 NC 4K7ohm 0402 5 1 16W R30 NC 10Kohm 0402 5 1 16W BS AVDD_DDR_2 5V_ P1 22 5 22 6 C16 1uF 0603 Y5V 80 20 10V C9 NC 10uF 0805 X5R 10 6 3V 1 2 3 _ CN2 DC...

Page 15: ...9 MGGB1005M301HT LF SCART AROUT SC_SW SCART_L_IN SCART_R_IN R52 0ohm 0402 5 1 16W RXD TXD R70 0ohm 0402 5 1 16W RXD C37 10uF 0805 Y5V 80 20 10V C40 0 1uF 0402 Y5V 80 20 16V SCART_ROUT R162 47Kohm 0402...

Page 16: ...A C216 22pF 0402 NPO 5 50V C217 22pF 0402 NPO 5 50V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 CN16 471511051 GND D52 NC ICVL0518030FR D53 NC ICVL0518030FR HDMI 5V 3 1 2 D56 BAT54C 21...

Page 17: ...V_ 3 3V 1 2V_VDDC AVDD_DDR_2 5V_ AVDD_DDR_2 5V_ AVDD_DDR_2 5V_ AVDD_DDR_2 5V_ DVDD_DDR_1 2V R228 NC 1Kohm 0402 1 1 16W C136 NC 0 1uF 0402 Y5V 80 20 16V AVDD_DDR_2 5V_ R217 NC 1Kohm 0402 1 1 16W C130 0...

Page 18: ...D GND 1 3 7 2 4 6 5 CN22 CKS3 5 KJ25 C225 1000pF 0402 X7R 10 50V C226 1000pF 0402 X7R 10 50V C221 NC 100pF 0402 NPO 5 50V C222 NC 100pF 0402 NPO 5 50V E16 470uF 25V 20 10 13 105 INV1 1 SGND 2 SVRR 3 O...

Page 19: ...6W 5VTV C239 0 1uF 0603 Y5V 80 20 50V P N_CON AIF AIF DIF2_OUT1 DIF2_OUT2 5VTV TUNER_SCL TUNER_SDA IF_AGC 33V R257 NC 0ohm 0402 5 1 16W R338 NC 0ohm 0402 5 1 16W L1 NC 0ohm 0603 5 1 10W L36 NC 0ohm 06...

Page 20: ...D YPBPR R L J5 NC Power In JUPM1 Panel Power Select J8 SP OUT CON8 USB J9 DVD Y C J10 NC DEGUB CON2 YPBPR CON10 HDMI CON1 CON6 SCART CON4 PC Audio CON5 Headphone CON1 AV IN CON1 AV CON7 DC IN CON12 VG...

Page 21: ...y for DVD 5 GND Ground 6 GND Ground 7 DVD_5V 5V DC power supply for DVD 8 DVD_5V 5V DC power supply for DVD J2 2X15pin 2 0 LVDS PORT NO Definition Description 1 VCC Panel power 2 VCC Panel power 3 VCC...

Page 22: ...SCL 5 SDA IIC SDA 6 GND Ground J4 14pin 2 0mm KEY Remote control Indicator light port NO Definition Description 1 GND Ground 2 K7 EXIT key 3 K6 POWER key 4 K5 RIGHT key 5 K4 LEFT key 6 K3 SOURCE key 7...

Page 23: ...DC Power Supply J7 11pin 2 0 DVD VIDEO AUDIO INPUT CONNECTOR NO Definition Description 1 GND Ground 2 DVD_Y Y input 3 GND Ground 4 DVD_PR Pr input 5 GND Ground 6 DVD_PB Pb input 7 DVD_L 8 GND Ground 9...

Page 24: ...D Serial Data Transmitter CON3 4pin 2 0 Expand USB PORT NC NO Definition DESCRIPTION 1 GND Ground 2 DP USB Data 3 DM USB Data 4 5V 5V Power Supply for USB JUPM1 6pin 2 5 PANEL POWER SUPPLY NO SYMBOL D...

Page 25: ...Panel Interface Pin Connection Model No LEA 19V07P 25...

Page 26: ...Panel Interface Pin Connection Model No LEA 19V07P 26...

Page 27: ...Panel Interface Pin Connection Model No LEA 22V07P 27...

Page 28: ...Panel Interface Pin Connection Model No LEA 22V07P Panel Interface Pin Connection 28...

Page 29: ...Model No LEA 22V07P 29...

Page 30: ...Panel Interface Pin Connection Model No LEA 24V07P 30...

Page 31: ...Model No LEA 24V07P 31...

Page 32: ...Model No LEA 24V07P 32...

Page 33: ...GENERAL TROUBLE SHOOTING 33...

Page 34: ...e USB disk into the USB interface on the Main Board 3 Supply DC12V to the TV unit 4 Wait for a while the LED light will flash quickly this upgrading is starting 5 When the LED light stop flashing and...

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