LG 50PC3DD-UE (CHASSIS:PA73E) Service Manual ▷ View online
- 13 -
ADJUSTMENT INSTRUCTIONS
[
White Balance
High Level : 216gray
[The standard coordinates and color temperature for CS-1000]
[The standard coordinates and color temperature for CA-100/100+ (CH 10)]
[The standard coordinates and color temperature for CA-210(CH 10)]
Mode
Temp
∆
uv
Color Coordination
Cool
Medium
Warm
11000K
9300K
6500K
0.0000
0.0000
0.0000
x
0.276
0.285
0.314
y
0.283
0.293
0.324
Module
Maker
Filter
Mode
42”
XGA
42X4
LGE
LGE
41%
Glass
41%
Glass
50”
WXGA
50X4
Temp
∆
uv
Color Coordination
Cool
Medium
Warm
Cool
Medium
Warm
11200K
9400K
6500K
11100K
9400K
6500K
-0.002
-0.002
-0.002
-0.001
-0.002
-0.001
x
0.276±0.002
0.285±0.002
0.314±0.002
0.276±0.002
0.285±0.002
0.314±0.002
y
0.280±0.002
0.290±0.002
0.321±0.002
0.281±0.002
0.291±0.002
0.322±0.002
Module
Maker
Filter
Mode
42”
XGA
42X3
50” WXGA(50X4) 41% Glass Filter
This model can be adjusted by using the same color coordinates to 42” XGA (42X4) 41% Glass Filter.
This model can be adjusted by using the same color coordinates to 42” XGA (42X4) 41% Glass Filter.
LGE
41%
Glass
Temp
∆
uv
Color Coordination
Cool
Medium
Warm
11000K
9300K
6500K
0.0000
0.0000
0.0000
x
0.276±0.002
0.285±0.002
0.314±0.002
y
0.280±0.002
0.293±0.002
0.324±0.002
- 14 -
TROUBLESHOOTING GUIDE
TV/CATV doesn’t display
Check TU4001 Pin9(Video output)
Can you see the normal signal?
Check the input(Pin63) of AV switch(IC5003).
Can you see the normal waveform?
Check the output(Pin56) of AV switch(IC5003).
Can you see the normal waveform?
Check the input(Pin1) of LPF(IC4006).
Can you see the normal waveform?
YES
YES
YES
NO
Could you measure voltage of TU4001 & IIC
lines?
Are they all normal?
Check the output(Pin8) of LPF(IC4006).
Can you see the normal waveform?
YES
Check the input(PinH26) of BCM3550(IC4006).
Measure waveform at C1010 because it s more
Measure waveform at C1010 because it s more
easy to check.
Can you see the normal waveform?
YES
YES
NO
You should check power line
& IIC lines.
YES
You should replace TUNER.
NO
After checking the Power of AV switch you should
decide to replace AV switch or not.
NO
After checking the Power of AV switch you should
decide to replace AV switch or not.
NO
After checking the Power of LPF you should decide to
replace LPF or not.
NO
After checking the Power of LPF you should decide to
replace LPF or not.
This board has big problem because Main
chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You
should decide to replace BCM3550 or not.
- 15 -
TROUBLESHOOTING GUIDE
Video doesn’t display
Check J5007 Pin3C
Can you see the normal waveform?
Check the input(Pin1 or Pin8) of AV
switch(IC5003). Pin1 is for video1,Pin8 is for
video 2.
Can you see the normal waveform?
Check the output(Pin56) of AV switch(IC5003).
Can you see the normal waveform?
Check the input(Pin1) of LPF(IC4006).
Can you see the normal waveform?
YES
YES
YES
NO
J5007 may have problem. Replace this Jack.
Check the output(Pin8) of LPF(IC4006).
Can you see the normal waveform?
YES
Check the input(PinH26) of BCM3550(IC4006).
Measure waveform at C1010 because it s more
Measure waveform at C1010 because it s more
easy to check.
Can you see the normal waveform?
YES
YES
NO
After checking the Power of AV switch you should
decide to replace AV switch or not.
NO
After checking the Power of AV switch you should
decide to replace AV switch or not.
NO
After checking the Power of LPF you should decide to
replace LPF or not.
NO
After checking the Power of LPF you should decide to
replace LPF or not.
This board has big problem because Main
chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You
should decide to replace BCM3550 or not.
- 16 -
TROUBLESHOOTING GUIDE
Component doesn’t display
Check J5004,J5005.
Can you see the normal waveform?
Check the input of Component
switch(IC5001,IC5002).
Can you see the normal waveform?
Check the output of Component
switch(IC5001,IC5002).
Can you see the normal waveform?
Check the input of MST3361(IC7004
Pin41,44,46).
Can you see the normal waveform?
YES
YES
YES
NO
J5004,J5005 may have problem. Replace this Jack.
Check the output of MST3361(IC7004 ).
Can you see the normal waveform?
YES
Check the input and output of
BCM3550(IC4006). Especially you should check
The H,V sync and clock.
Can you see the normal waveform?
YES
YES
NO
After checking the input TR of component, you should
decide to replace component switch or not.
NO
NO
After checking the Power of MST3361 you should
decide to replace MST3361 or not.
NO
This board has big problem because Main
chip(BCM3550) have some troubles.
After checking thoroughly all path once again, You
should decide to replace BCM3550 or not.
After checking the Power of component switch you
should decide to replace component switch or not.
After checking the Power of MST3361 you should
decide to replace MST3361 or not.
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