LG 32LN5700 (CHASSIS:LA33B) Service Manual ▷ View online
LGE TV Research Lab.
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LC33B Adjust Specification
C2-2230
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Reform: 12. 02. 03
LG Electronics
temperature.
Principle : To adjust the white balance without the saturation,
Fix the one of R/G/B gain to 192 (default data) and decrease the others.
Adjustment mode : Two modes – Medium / Warm
▪ W/B adj. Objective & How-it-works
- Objective: To reduce each Panel’s W/B deviation
- How-it-works: When R/G/B gain in the OSD is at 192, it means the panel is at its Full
- How-it-works: When R/G/B gain in the OSD is at 192, it means the panel is at its Full
Dynamic Range. In order to prevent saturation of Full Dynamic range and data,
one of R/G/B is fixed at 192, and the other two is lowered to find the desired
value.
one of R/G/B is fixed at 192, and the other two is lowered to find the desired
value.
-Adj. condition : normal temperature
1) Surrounding Temperature: 25±5℃
2) Surrounding Humidity: 20% ~ 80%
5.3.2 Equipment
1) Color Analyzer: CA-210 (
1) Color Analyzer: CA-210 (
LED Module : CH 14
)
2) Adj. Computer(During auto adj., RS-232C protocol is needed)
3) Adjust Remocon
4) Video Signal Generator MSPG-925F 720p/204-Gray(Model:217, Pattern:49)
→ Only when internal pattern is not available
▪
3) Adjust Remocon
4) Video Signal Generator MSPG-925F 720p/204-Gray(Model:217, Pattern:49)
→ Only when internal pattern is not available
▪
Color Analyzer Matrix should be calibrated using CS-100
5.3.3 Equipment connection MAP
5.3.4 Adj. Command (Protocol)
<Command Format>
<Command Format>
Color Analyzer
Computer
Pattern Generator
※
※If TV internal pattern is used, not
Signal Source
Probe
RS-
232C
RS-
232C
USB to RS-232C
LGE TV Research Lab.
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LC33B Adjust Specification
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Reform: 12. 02. 03
LG Electronics
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP
- LEN: Number of Data Byte to be sent
- CMD: Command
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
▪RS-232C Command used during auto-adj.
- VAL: FOS Data value
- CS: Checksum of sent data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
▪RS-232C Command used during auto-adj.
RS-232C COMMAND
[CMD ID DATA]
[CMD ID DATA]
Explanation
wb
00
00
Begin White Balance adj.
wb
00
10
Gain adj.(internal white pattern)
wb
00
1f
Gain adj. completed
wb
00
20
Offset adj.(internal white pattern)
wb
00
2f
Offset adj. completed
wb
00
ff
End White Balance adj.
(internal pattern disappears )
(internal pattern disappears )
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f -> Gain adj. complete
*(wb 00 20(start), wb 00 2f(endc)) -> Off-set adj.
wb 00 ff ->End white balance auto adj.
▪Adj. Map
Applied Model : LC33B Chassis ALL MODELS
Adj. item
Command
(lower caseASCII)
(lower caseASCII)
Data Range
(Hex.)
(Hex.)
Default
(Decimal)
(Decimal)
Details
CMD1
CMD2
MIN
MAX
Cool
R Gain
j
g
00
C0
TBD
LGE TV Research Lab.
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LC33B Adjust Specification
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Reform: 12. 02. 03
LG Electronics
G Gain
j
h
00
C0
TBD
B Gain
j
i
00
C0
TBD
R Cut
TBD
G Cut
TBD
B Cut
TBD
Medium
R Gain
j
a
00
C0
TBD
G Gain
j
b
00
C0
TBD
B Gain
j
c
00
C0
TBD
R Cut
TBD
G Cut
TBD
B Cut
TBD
Warm
R Gain
j
d
00
C0
TBD
G Gain
j
e
00
C0
TBD
B Gain
j
f
00
C0
TBD
R Cut
TBD
G Cut
TBD
5.3.5 Adj. method
5.3.5.1 Auto adj. method
1) Set TV in adj. mode using P-Only key
2) Zero calibrate probe then place it on the center of the Display
3) Connect Cable (RS-232C to USB)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sing), check adj. status pre mode
(Cool, Medium, Warm)
6) Remove probe and RS-232C to USB cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and finish as end command “wb 00 ff”,
▪ W/B Adj. must begin as start command “wb 00 00” , and finish as end command “wb 00 ff”,
and Adj. offset if need
5.3.5.2 Manual adj. method
1) Set TV in Adj. mode using P-Only Key.
2) Zero Calibrate the probe of Color Analyzer, then place it on the center of LCD module within
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LC33B Adjust Specification
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10cm of the surface..
3) Press ADJ key à EZ adjust using adj. R/C à 7. White-Balance then press the cursor to the
3) Press ADJ key à EZ adjust using adj. R/C à 7. White-Balance then press the cursor to the
right (KEY▶).
(When KEY(▶) is pressed 204 Gray internal pattern will be displayed)
(When KEY(▶) is pressed 204 Gray internal pattern will be displayed)
4) Adjust modes (Cool) Fix the G gain to 172 (default data) and change the others ( R/B Gain ).
Adjust two modes ( Medium / Warm) Fix the one of R/G/B gain to 192 (default data) and
decrease the others
decrease the others
5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of color temperature.
▪ If internal pattern is not available, use RF input. In EZ Adj. menu 7.White Balance, you can
▪ If internal pattern is not available, use RF input. In EZ Adj. menu 7.White Balance, you can
select one of 2 Test-pattern: ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 204 Gray pattern.
adjust using RF signal in 204 Gray pattern.
※
CASE Cool
First adjust the coordinate far away from the target value(x, y).B
1. x, y 〉target
2. x, y〈 target
3. x 〉target , y〈 target
4. x 〈 target , y 〉target
1. x, y 〉target
2. x, y〈 target
3. x 〉target , y〈 target
4. x 〈 target , y 〉target
- Every 4 case have to fit y value by adjusting B Gain and then fit x value by adjusting
R-Gain
- In this case, increasing/decreasing of B Gain and R Gain can be adjusted.
How to adjust
1.Fix G gain to 172
Adjust R Gain and B Gain ( In Case of Mostly Blue Gain Saturation )
2.When B Gain > 255, Release Fixed G Gain and Readjust
How to adjust
1.Fix G gain to 172
Adjust R Gain and B Gain ( In Case of Mostly Blue Gain Saturation )
2.When B Gain > 255, Release Fixed G Gain and Readjust
※
CASE Medium / Warm
First adjust the coordinate far away from the target value(x, y).
1. x, y 〉target
1. x, y 〉target
ⅰ
) Decrease the R, G.
2. x, y〈 target
ⅰ) First decrease the B gain,
ⅱ) The one value is bigger than the target then the other one should be not much more
ⅰ) First decrease the B gain,
ⅱ) The one value is bigger than the target then the other one should be not much more
bigger than target.
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