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Troubleshooting
Related Manuals for Akai LEA-19V07P
Summary of Contents for Akai LEA-19V07P
- Page 1 LEA-19V07P LEA-22V07P LEA-24V07P...
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Page 2: Table Of Contents
Important 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 -----------------------------------------------------------------34... -
Page 3: Important Safety Instructions
Important Safety Instructions Observe all warnings and cautions ● All warning and cautions on the unit and in the User Manual must be observed closely. Servicing ● Non-qualified service personnel shall not open the cabinet for repairing. Be sure to unplug the power cord from the outlet before cleaning and servicing. Handing and Cleaning the Screen ●... -
Page 4: Basic Trouble Shooting
Basic Trouble Shooting Problem: Do not power on and no red indicator light. ● Please check the output voltage of AC adaptor, the proper output should be DC12V. ● Please check the fuse on the Main Board if broken. Problem: Do not power on, red indicator light at stand-by mode. ●... -
Page 5: Main Board Trouble Shooting
Main Board Trouble Shooting... - Page 6 1、Power Supply Trouble Check E3 for 12V output ? F1 damage or power supply Check E9 for 5V output Check if U1,U2 for 3.3V L13/10μH is and U3 for 2.5V output? damaged or false welding Check the circuit Check U4 for 1 2V Check U4 for 1.2V It’s normal but It s normal but...
- Page 7 2、Display Trouble（exceptional screen） Exceptional screen Check if the cable is correct and connected tightly and connected tightly Check if the LCD panel is OK Check if the output circuit from U12 to the jack to panel are normal Change the cable for panel Change or repair the damage Check the circuit of U12...
- Page 8 3、Display Trouble （white screen） White screen Check if the voltage of panel power supply is normal(depend on panel) supply is normal(depend on panel) Is there voltage on grid of Is there output signal Q8/WPM3407 can changed from U12 (12～0V or 5V~0) CN4 is ill-connected Change the LCD panel U12 is illness...
- Page 9 4、Display Trouble（black screen） Black screen Check if the voltage on CN13/BLON is 5V Check if the power supply for inverter is normal Check the control circuit from Repair the power supply The inverter is damaged BLON to U12 or U12 is damaged...
- Page 10 5、Audio Trouble（No sound) No Sound Check if have audio signal input Check the set of volume, Mute is normal Check signal output on pin no. 4 & 6 of U13 Is normal Is normal Check power supply (>11V)on pin no. 7 of U13/1517P Check the voltage (>9.2V) on pin no.8 Of U13...
- Page 11 6、Function Trouble（TV video） TV can’t search any channel/no picture Confirm if the RF cable do have signal cable do have signal Check if T2-pin7 for 5V Check if T2-pin5,6 has data for I Check if t1-pin9&10have data Check if T2-pin2 for variational voltage within 1.8V~4.3V Check the circuit from T2-pin9&10 to...
- Page 12 7、Function Trouble（PC） PC mode Picture is not Missing color, Picture No signal in center deflection color dithering Check if the R.G.B Check if the signal of input signal of U12 is normal V-sync,H-sync is OK Do “reset” process Check the circuit on the menu or Check the circuit Check the circuit of...
- Page 13 8、Function Trouble（SCART、HDMI、YPbPr、DVB/TV） SCART RGB .SCART Video. HDMI,S-VIDEO,CVBS HDMI,S-VIDEO CVBS does not Missing color, does not has the signal has the signal deflection color deflection color has the signal Check if the Check if R.G.B input k if R G B i U12/6M181 i 43 U12/6M181-pin43 of U12 is normal...
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Page 14: Main Board Circuit Diagram
+3V3 +3.3V BM1117-3.3(SOT-223) +3.3V_STB 5V_SW DC-001- 内径为 2.0mm-G +5V_STB 0ohm-0603-±5%-1/10W 100uF-16V-±20%-6*7 － 105 ℃ 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V +5V_STB 0.1uF-0402-Y5V-+80%-20%-16V NC/100uF-16V-±20%-6*7 － 105 ℃ 100uF-16V-±20%-6*7 － 105 ℃ BL ON NC/10uF-0805-X5R-±10%-6.3V BL ON NC/510ohm-0402-±5%-1/16W BM1084-3.3(TO263-2)//NC/BM1117-3.3(SOT-223) PW_ON 6PIN-2.0-D-H- 红色 -G NC/10PIN-2.0-D-H-G RT8284NGSP 0.01uF-0402-X7R-±10%-50V +12V 0.01uF-0402-X7R-±10%-50V... - Page 15 PC_RIN 0ohm-0402-±5%-1/16W GZ1005D600T(F) 5V_SW +5V_VID NC/BAT54C-215 5V_SW NC/10Kohm-0402-±5%-1/16W USB5V 100ohm-0402-±5%-1/16W NC/10Kohm-0402-±5%-1/16W NC/33ohm-0402-±5%-1/16W 75ohm-0402-±5%-1/16W 10uF-0805-Y5V-+80%-20%-10V DUSB2_DM 5V_SW TXD/ 0ohm-0402-±5%-1/16W 10pF-0402-NPO-±5%-50V 0.1uF-0402-Y5V-+80%-20%-16V DUSB2_DP NC/ICVL0518030FR 0.1uF-0402-Y5V-+80%-20%-16V VGA_5V 4PIN-2.0-D-H-G YPbPr_YIN SCART_Gin SCART_Gi YPbPr_YI PC_GIN PC_GI VGA_TX VGA_Rin 10uF-0805-Y5V-+80%-20%-10V VGA_SDA VGA_Gin PC_GIN 100Kohm-0402-±5%-1/16W NC/0.1uF-0402-Y5V-+80%-20%-16V GZ1005D600T(F) 33Kohm-0402-±5%-1/16W 22pF-0402-NPO-±5%-50V VGA_Bin...
- Page 16 CN16 HDMI_CEC R203 HDMI-CEC RX_HOTPLUG 220ohm-0402-±5%-1/16W HDMI_5V C215 HDMI_SDA' ARC' R205 HDMI_SCL' ARC' HDMI_CEC 0.047uF-0402-X7R-±10%-16V HDMI_RXC- 33ohm-0402-±5%-1/16W HDMI_RXC+ HDMI_RX0- HDMI_RX0+ HDMI_RX1- HDMI_RX1+ HDMI_RX2- HDMI_RX2+ 471511051 NC/ULCE0505A015FR NC/ICVL0518030FR NC/ULCE0505A015FR NC/ULCE0505A015FR NC/ULCE0505A015FR NC/ICVL0518030FR NC/ULCE0505A015FR NC/ULCE0505A015FR R206 NC/ULCE0505A015FR NC/ICVL0518030FR NC/ULCE0505A015FR NC/ICVL0518030FR HDMI+5V +5V_STB NC/0ohm-0402-±5%-1/16W BAT54C-215 4K7ohm-0402-±5%-1/16W...
- Page 17 5V_SW 5V_SW R210 R211 A_MADR0 A_MDATA0 CN19 A_MADR1 A_MDATA1 A_MADR2 A_MDATA2 RXD/ R212 A_MADR3 A_MDATA3 TXD/ R213 A_MADR4 A_MDATA4 DVDD_NODIE_1.2V A_MADR5 A_MDATA5 4K7ohm-0402-±5%-1/16W A_MADR6 A_MDATA6 4PIN-2.0-D-H- 蓝色 -G 4K7ohm-0402-±5%-1/16W A_MADR7 A_MDATA7 C127 100ohm-0402-±5%-1/16W A_MADR8 100ohm-0402-±5%-1/16W A_MADR9 A_MDATA8 NC/ICVL0518030FR 2.2uF-0603-Y5V-+80%-20%-10V A_MADR11 A_MDATA9 NC/ICVL0518030FR A_MADR12...
- Page 18 YD1517P +12VOFF IC MUTE R251 0.1uF-0402-Y5V-+80%-20%-16V +12VOFF 470uF-25V-±20%-10*13 － 105 ℃ R255 10Kohm-0402-±5%-1/16W + E12 2K2ohm-0402-±5%-1/16W 100uF-16V-±20%-6*7 － 105 ℃ C218 10Kohm-0402-±5%-1/16W 10Kohm-0402-±5%-1/16W AMP-RO R260 C219 + E17 R264 +3.3V_STB AMP-LO R274 C220 4K7ohm-0402-±5%-1/16W C221 C222 C223 C224 R275 47uF-16V-±20%-4*7 － 105 ℃ R280 AMP-MUTE PMBT3904...
- Page 19 5V_IF 0.1uF-0402-Y5V-+80%-20%-16V NC/120ohm-0402-±1%-1/16W NC/680ohm-0402-±5%-1/16W NC/47uF-16V-±20%-4*7 － 105 ℃ C229 0.1uF-0402-Y5V-+80%-20%-16V NC/SDFL1608Q1R0KT(F) 0.1uF-0402-Y5V-+80%-20%-16V 0.1uF-0402-Y5V-+80%-20%-16V NC/0.1uF-0402-Y5V-+80%-20%-16V NC/2SC3779D NC/4K7ohm-0402-±5%-1/16W R300 +12VOFF NC/6K8ohm-0402-±5%-1/16W NC/2K2ohm-0402-±5%-1/16W NC/0.01uF-0402-X7R-±10%-50V NC/2K2ohm-0402-±5%-1/16W R301 NC/150ohm-0402-±5%-1/16W NC/0ohm-0402-±5%-1/16W UTC78D05L 5VTV NC/33ohm-0402-±5%-1/16W +12VOFF 5VTV NC/0.01uF-0402-X7R-±10%-50V C230 SAW1 C231 C232 C233 R302 C235 R303 R304 NC/BA591 C234 R305...
- Page 20 PICTURE JUPM1 J5(NC) J1(NC) Panel Power Select LVDS DVD Power DVD YPBPR+R/L SP/OUT KEY&IR&LED J5（NC） Power In POWER / INVERTER DVD Y/C J10(NC) DEGUB CON4 CON6 CON5 CON7 CON8 CON10 CON12 CON1 PC Audio SCART Headphone DC IN HDMI Coaxial SCART can change AV Input or AV Output CON9 CON4...
- Page 21 INTERFACE DEFINITION All jack recognize the square pad as first pin. J1 (8pin/2.0): DVD POWER(NC) Definition Description DVD_STB DVD STANDBY DVD_AUTO DVD Control DVD_IR DVD Remote receiver +12V +12V DC power supply for DVD Ground Ground DVD_5V +5V DC power supply for DVD DVD_5V +5V DC power supply for DVD J2 (2X15pin/2.0)：LVDS PORT...
- Page 22 RXE0+ RXE0+ RXE1- RXE1- RXE1+ RXE1+ RXE2- RXE2- RXE2+ RXE2+ Ground Ground RXEC- RXEC- EXEC+ EXEC+ RXE3- RXE3- RXE3+ RXE3+ J3(6pin/2.0mm)：HDCP CONNECTOR(NC) Definition Description +12V +12V DC Power Supply +5V DC Power Supply Ground IIC SCL IIC SDA Ground J4 (14pin/2.0mm): KEY/Remote control&Indicator light port Definition Description Ground...
- Page 23 5V_SW +5V DC Power Supply 5V_SW J6 (10pin/2.0mm)BUILT_IN POWER SUPPLE&INVERTER Definition DESCRIPTION Ground Brightness Adjustment for Panel ON/OFF Back-Light ON/OFF Control for Panel (1：ON/0: OFF) +12V +12V INVERTER +12V DC Power Supply +12V +12V J7(11pin/2.0)：DVD VIDEO&AUDIO INPUT CONNECTOR Definition Description Ground DVD_Y Y input...
- Page 24 Ground J10(4pin/2.0)：DEBUG CONNECTOR Definition DESCRIPTION +5V Power Supply Ground Serial Data Receiver Serial Data Transmitter CON3 (4pin/2.0)：Expand USB PORT(NC) Definition DESCRIPTION Ground USB Data+ USB Data- +5V Power Supply for USB JUPM1 (6pin/2.5)：PANEL POWER SUPPLY SYMBOL DESCRIPTION +3.3V +3.3V Panel Power in +5V Panel Power in +12V +12V Panel Power in...
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Page 25: Panel Interface Pin Connection
Panel Interface Pin Connection Model No.: LEA-19V07P... - Page 26 Panel Interface Pin Connection Model No.: LEA-19V07P...
- Page 27 Panel Interface Pin Connection Model No.: LEA-22V07P...
- Page 28 Panel Interface Pin Connection Model No.: LEA-22V07P Panel Interface Pin Connection...
- Page 29 Model No.: LEA-22V07P...
- Page 30 Panel Interface Pin Connection Model No.: LEA-24V07P...
- Page 31 Model No.: LEA-24V07P...
- Page 32 Model No.: LEA-24V07P...
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Page 33: General Trouble Shooting
GENERAL TROUBLE SHOOTING... -
Page 34: Software Upgrading Methods
Upgrade Methods USB Upgrade Method: 1. Copy BIN_6M181.bin into an USB disk. 2. Plug the 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.