Read LG 55LH95QD (CHASSIS:LC91E) Service Manual online
5.1.2. Equipment
1) Color Analyzer : CA-210 (NCG: CH 9 / WCG: CH12)
2) Adj. Computer(During auto adj., RS-232C protocol is
2) Adj. Computer(During auto adj., RS-232C protocol is
needed)
3) Adjust Remote control
4) Video Signal Generator MSPG-925F 720p/216-Gray
4) Video Signal Generator MSPG-925F 720p/216-Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
• Color Analyzer Matrix should be calibrated using CS-1000
5.1.3. Equipment connection
5.1.4. Adj. Command (Protocol)
• Protocol
- LEN : Number of Data Byte
- CMD : Command
- VAL : Value of FOS Data
- CS : Checksum
- A : Acknowledge
- CMD : Command
- VAL : Value of FOS Data
- CS : Checksum
- A : Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX}
• RS-232C Command(Automatic adjustment)
Ex) wb 00 00 : Start Auto-adjustment of white balance.
wb 00 10 : Start Gain Adjustment (Inner pattern)
ja 00 ff : Adjustment data
jb 00 c0 :
…
wb 00 1f : End of Gain adjustment
ja 00 ff : Adjustment data
jb 00 c0 :
…
wb 00 1f : End of Gain adjustment
* (wb 00 20(start), wb 00 2f(end)) -> In the case of Off-
set adjustment
wb 00 ff : End of white balance adjustment
wb 00 ff : End of white balance adjustment
• Adjustment Map
5.1.5. Adjustment of White Balance
(1) Automatic Adjustment
1) The adjustment condition should be set by the Power
On key.
2) Perform the zero calibration of the Color Analyzer and
place the probe close to the display center.
3) Connect the communication cable (RS-232C).
4) Select the desired model of the adjustment program and
4) Select the desired model of the adjustment program and
perform the adjustment.
5) After the adjustment is ended (check the OK sign),
check the adjustment condition for each mode of the set.
(Warm, Medium, Cool)
(Warm, Medium, Cool)
6) Disconnect the probe and the communication cable to
end the adjustment.
* The adjustment should be started with "wb 00 00" and
ended with "wb 00 ff", and the offset should be adjusted
when necessary.
when necessary.
(2) Manual adj. method
1) Set TV in Adj. mode using POWER ON
2) Press the ADJ of the R/C to enter into ‘EZ-ADJUST’.
3) Select ‘10.TEST PATTERN’ with the CH +/- key and
2) Press the ADJ of the R/C to enter into ‘EZ-ADJUST’.
3) Select ‘10.TEST PATTERN’ with the CH +/- key and
press the Enter key for 30 minutes or longer to perform
the heat run.
the heat run.
4) Perform the zero calibration of the Color Analyzer and
fix the sensor with the 10cm or less distance at the
center of the LCD module surface when adjusting.
center of the LCD module surface when adjusting.
5) Press the ADJ of the R/C to select ‘7.White-Balance’ of
the Ez-Adjust and press the right arrow key(
G
) to enter
into the adjustment mode. (As soon as you press ‘
G
’,
the screen is entered into the full white inner pattern.)
6) Fix one of the R/G/B gains to 192 and decrease the
remaining two gains to adjust not to exceed 192.
7) The adjustment is done at three white balances of Cool,
Medium and Warm
- 11 -
Co lo r An alyzer
Co m p ut er
Pat t ern Gen erat o r
RS -232C
RS -232C
RS -232C
Probe
Signal Source
* If TV internal pattern is used, not needed
Connection Diagram of Automatic Adjustment
LEN
CMD
VAL
CS
RS-232C COMMAND
Meaning
[CMD
ID
DATA]
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
ITEM
Command
Data Range
Default
(Hex.)
(Decimal)
Cmd 1
Cmd 2
Min
Max
Cool
R-Gain
j
g
00
C0
G-Gain
j
h
00
C0
B-Gain
j
i
00
C0
R-Cut
G-Cut
B-Cut
Medium
R-Gain
j
a
00
C0
G-Gain
j
b
00
C0
B-Gain
j
c
00
C0
R-Cut
G-Cut
B-Cut
Warm
R-Gain
j
d
00
C0
G-Gain
j
e
00
C0
B-Gain
j
f
00
C0
R-Cut
G-Cut
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