Orion LED1546 Manual de usuario
LED1546 LED1946 LED2247 LED2444
LVDS
(1)
IIC
LVDS
(2)
POWER &
IIC
HK
HK-
-T.M182VGV01X
T.M182VGV01X
Trouble shooting flow chart
Trouble shooting flow chart
—
—Power Chart
Power Chart
—
—Power Units Problem Solving
Power Units Problem Solving
—
—Display Units Problem Solving
Display Units Problem Solving
—
—Audio Units Problem Solving
Audio Units Problem Solving
—
—Functional Units Problem Solving
Functional Units Problem Solving
HK
HK-
-T.M182VGV01X
T.M182VGV01X Power Chart
Power Chart
In stand-by condition,
Check CN3 1pin Whether there is 5V?
Check main board CN10 1pin have 3.3V ?
Normal boot
Check the availability of short-
circuit power supply and
motherboard
After power on,
Check point CN3 1pin have 5V，
Test L5 have 12V ， Test L3 have
1.26V， Test U5 have 1.8V , Test
L100 have 2.5V ?
YN
OK
Check U1 Power
Supply Net
NY
Check external
power
NY
2.
2.1 Power Units Problem Solving
1 Power Units Problem Solving (Mainboard can not boot.)
(Mainboard can not boot.)
Flickering or
Black screen（Back light on）
Check the connection of Driver
Board Cable connect well
Change the LCD,
check if it is ok
Change driver
board cable
Y
N
Change
LCD
N
Y
Check the network output,
CN2 cable socket
Works normal
Y
Check U101(MST6M182)
Power supply and clock
circuit chip LVDS output
pin is short circuit,
or open-circuit ？
Change the circuit
N
Check LCD power
VCC-Panel is OK ?
CN9 voltage is ok?
Q4 output voltage
is ok ?
Check the software
match able
Re-update the software
N
2.2 Display Unit (black screen)
Black screen
Main board CN2 1，2 pin
Have or not 12V？
Check the Inverter power supply
CN2 4pin output voltage is over 3.3V
Check power supply circuit
N
NY
Y
Maintenance power Inverter broke or
bad wire connection
2.3 Display Unit (black screen)
No sound
If Any audio signal input or
amplifier power supply normal
Check
External audio
equipment
Amplifier power
supply circuit
U9（YD1517）1/9
Pin have signal input
NY
Y
N
Check the Volume,
MUTE settings
Reset
CN7 no signal output
YN
Check
external
Speaker
Check amplifier
power supply circuit
Power supply
normal change U9
Check U101
have the audio signal output
N
Y
NY
Maintains U101
Peripheral
circuits，change
U101
Check U101 & U9
Connect part
network
2.4 Audio Unit (no sound)
TV no searching
/no image
Check External RF
signal input
N
Check
external
RF
equipment
Y
Check the Turner
NO.8 pin of T1
have 33V
Check
circuit of
U1
Y
N
Check Tuner No. 6,7 pin of T1
have I2C data
Check pull-up
voltage of I2C
network is
normal
N
Y
Check No.9,10 pin of T1
have IF signal
NY
Check external circuit
of T1 is OK?
N
Y
Repair
its
outer
circuit
Check T1&
U101(MST6M182)
connect network
Change
Tuner
2.5 Function Unit (ATV broke down)
Check the Turner
NO.3 pin of T1
have 5V
Y
Check R811 have 12V
&R812 have PWM
N
Change Tuner
Check U101 PWM out
signal circuit& Q2
N
Y
Este manual sirve para los siguientes modelos
3
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