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Page 36
MODELS: LT-3280D/LT-3780D
☆
Short1 mode: The POWER-LED blinking is 1 time within a cycle.
NO
Pcba-POWER-SUB1 is out of order.(Only LT-3780D)
Pcba-POWER-SUB2 is out of order.(Only LT-3280D)
YES
The inverter circuit of LCD- panel is out of order.
CN1 and CN2 harness are removed.
Connect the Power plug again and turn on the main Power switch
(Front switch or remote switch).
Is the POWER-LED still blinking?
☆
Short2 mode: The POWER-LED blinking is 2 times within a cycle.
Pcba-MAIN is out of order.
YES
Confirm the following fuses. Repair the broken fuse.
Parts No.
Rated value
Output
Measurement part
F9G5 1.6A
AMPVCC(17V)
Cathode
of
D9H5.
F9G6
1A
P5V(only 32”)
Cathode of D9J9.
F9G7 4A
18V(only
37”)
Cathode
of
D9J2.
F9G8 0.5A
4.5V
Cathode
of
D9H5.
PD and PE harness are removed after the broken fuse is repaired.
Connect the power plug again.
Is the voltage of 4.5V, AMPVCC(17V),P5V(only LT-3280D) and 18V(only LT-
3780D) output available?
Pcba-POWER is out of order.
NO
PD and PE harness are connected after the power plug is
removed.
CNF1(only32") or CNF2(only37") harness is removed.
Connect the power plug again and turn on the main
Power switch (Front switch or remote switch).
Is the voltage of 4.5V, AMPVCC(17V),P5V(only LT-
3280D) and 18V(only LT-3780D) output available?
The circuit of LCD-panel is
out of order.
YES
NO
(A) In case of the POWER-LED blinking.
(A) In case of the POWER-LED blinking.
(A) In case of the POWER-LED blinking.
(A) In case of the POWER-LED blinking.
(A) In case of the POWER-LED blinking.
Содержание LT-3280
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