LG 42LS341C / 42LS3450 (CHASSIS:LJ21C) Service Manual ▷ View online
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6. 3D Function Test
(Pattern Generator MSHG-600, MSPG-6100 [SUPPORT
HDMI1.4])
* HDMI mode NO. 872 , pattern No.83
1) Please input 3D test pattern like below (HDMI mode NO.
872 , pattern No.83)
2) When 3D OSD appear automatically , then select OK
button.
3) Don’t wear a 3D Glasses, Check the picture like below
7. EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3) Cover the Eye Q II sensor on the front of the using
your hand and wait for 6 seconds
Step 4) Confirm that R/G/B value is lower than 10 of the “Raw
Data (Sensor data, Back light )”. If after 6 seconds,
R/G/B value is not lower than 10, replace Eye Q II
sensor
Step 5) Remove your hand from the Eye Q II sensor and wait
for 6 seconds
Step 6) Confirm that “ok” pop up.
If change is not seen, replace Eye Q II sensor
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TROUBLE SHOOTING
No power
Check 24V, 12V, 3.5V
of Power B/D
Check short of Main B/D
or Change Power B/D
Pass
Check Output of
Q403, IC407, IC401
Check P403 Connector
Change LED Assy
: [A] PROCESS
Fail
Fail
Pass
Pass
Check LED Assy
Check short of
IC402, IC403
Pass
Check short of
Q403, IC407, IC401
Fail
Re-soldering or Change defect
part of Q403, IC407, IC401
Fail
Re-soldering or Change defect
part of Q403, IC407, IC401
Fail
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No Raster
: [B] Process
Check LED status
On Display Unit
Repeat A PROCESS
Pass
Fail
Check Output of IC1401
Change IC1401
Fail
Change Inverter Connector
Or Inverter
Fail
Pass
Fail
Pass
Change LVDS Cable
Fail
Check LVDS Cable
Pass
Check Panel Link Cable
Or Module
Change Panel Link Cable
Or Module
Check Inverter Connector
Or Inverter
Pass
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No Raster on COMPONENT Signal
Check Input source
Cable And Jack
Pass
Re-soldering or
Change the defect part
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Check The Input/Output
Of JK1601, JK1602
Fail
Pass
No Raster on HDMI Signal
Check Input source
Cable And Jack
Pass
Check the Input/Output
Of JK801, JK802, JK803
Fail
Re-soldering or
Change the defect part
Pass
Pass
Check the Input/Output
Of IC103
Fail
Re-soldering or
Change the defect part.
Re-download HDCP
Pass
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Pass
Check the Instart Menu
EDID D/L Status
Fail
Re-download EDID Data]
(Adjust Menu EDID D/L)
Pass
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