9
to LCD Overlay Bezel
Assembly.
z
replace Power Adapter.
If LED is on,
z
tighten midpoint (LCD Power Supply side)
& endpoint (A/D Board side) connection.
z
or make sure the voltage of end point is
DC 12 volt.
The cable related to LCD
Lamp Inverter is loose in
either side.
Check if the connection is secure.
TV on/off button is wrong or
stuck.
Replace OSD Button Board.
A/D Board is damaged.
Replace A/D Board.
LCD Lamp inverter is
damaged.
Replace LCD Lamp inverter.
LCD Back Light is damaged. Replace LCD screen.
left upper corner of LCD screen.
The connector or cable is
bad.
Replace the connector or cable
Channels or Volume does not change
Button to change channels
or volume does not work.
Replace the button, OSD Button Board or harness
related to it.
Air/cable setting is not
correct
Follow the set up procedures in LCD manual.
Faulty headphones
Replace headphones
No sound
Faulty headphone jack
assembly or Audio Interface
Board.
Replace Audio Interface Board or headphone jack.
Summary of Contents for M770E
Page 24: ...23 3 1 How to Replace the LCD Screen in Model M770EL Fig 3a CONSOLE POST ...
Page 25: ...24 Fig 3b CONSOLE ...
Page 33: ...32 7 Install new AUDIO INTERFACE DOWNLOAD Board 24 in reverse order ...
Page 40: ...39 4 1 Cable Connection Block Diagram 1 MPU PCB on M770EL MPU_FRONT Display MPU_BACK MAIN ...
Page 41: ...40 2 MPU PCB on M770E ...
Page 42: ...41 3 A D BOARD on M770EL ...
Page 43: ...42 4 POWER BOARD 4 1 M770EL DRIVE Board SMPS 5V LCD POWER ADAPTER 4 2 M770E DRIVE Board ...
Page 60: ...59 RCA 6A YELLOW Video Input ...
Page 69: ...68 ...