XOCECO LC-42FE32, Руководство по обслуживанию

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3. Troubleshooting guide
Connect the power
A red indicator lights?
Check Power supply, check if 50V_IN (X14 pin9)
on 55# board is normal, the voltage of X6 pin8 on
main board is normal. IR board has problem.
A blue indicator lights?
Check STANDBY, check if 5V_IN is normal
Does backlight light up
Check the voltage of backlight board, other voltages
and the communication of PWM2000 DDR matching
resistance
Check if the display of each
channel’s video signal is normal
Check if the signal inputted from the channel to pin
IC is normal or IC and its periphery is normal or the
output of LVDS is normal
Check if the display of each
channel’s audio signal is normal
Check if the signal inputted from the channel to pin
IC is normal or N13 on main board, N703 on 55#
board, TPA3008D2, MSP4440 and its periphery is
normal.
No
No
No
No
No
Yes, turn the unit on
Yes
Yes