Document: After-sales Maintenance Service Manual No.: L32R63*VKE/L40R63*VKE/L43R63*VKE/L49R63*VKE Version: 1.0 Effective from: APRIL 4th, 2016
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When the indicator is on but there is no display, check remote control for power-off, minimum brightness,
contrast ratio, check high-voltage switchboard controlled by main board for abnormity
II General Electrical Fault Analysis Process
1. No power
Check 220V power supply voltage and the contact of power
socket Check AC (220V) voltage and the contact of CN101 socket.
Check +5V and +12V output from embedded
power supply for abnormity
Check +5V and +12V on main board for
abnormity
Abnormal output v5V and +12V from
embedded power supply, replace embedded
power supply with the same model
Check for open-loop of fuse, or replace main
board
Check main board of power supply for
looseness, open-loop and poor contact
Replace power cord or power socket
YES
NO
YES
NO
YES
NO
Check the fuse on high-voltage board for the
supply of 12V
Replace high-voltage switchboard
YES
YES
2. Without light
Check each triode of control part for abnormity
or replace main board
Check fuse
NO
NO
L32R63_VKE,L40R63_VKE,L43R63_VKE,L49R63_VKE_CIS_Russia.indd 4
2016-04-05 오전 11:00:48
