DOWNLOAD LG 32LB9D (CHASSIS:LT73A) Service Manual ↓ Size: 6.66 MB | Pages: 33 in PDF or view online for FREE

Model
32LB9D (CHASSIS:LT73A)
Pages
33
Size
6.66 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lb9d-chassis-lt73a.pdf
Date

LG 32LB9D (CHASSIS:LT73A) Service Manual ▷ View online

- 13 -
5. ADC Calibration
5.1 Adjustment of RF / AV / S-VIDEO
* Required Equipments
8 Remote controller for adjustment.
8 MSPG-925FS Pattern Generator (Which has Video
Signal: 7 Color Bar Pattern shown in Fig. 1).
=>  Model: 207 / Pattern: 65  
5.1.1 Method of Auto RF / AV / S-VIDEO Color Balance
(NTSC-J).
1) Input the Video Signal: 7 Color Bar signal into AV1
2) Set the PSM to Dynamic mode in the Picture menu.
[Fig.1]
3) Press IN-START key on R/C for adjustment.
[Fig.2]
4) Press  the  G (Vol.+) key to operate the set, then it
becomes automatically.
5) Auto-RGB OK means the adjustment is completed.
5.2 Adjustment of Component
*Required Equipments
8 Remote controller for adjustment
8 MSPG-925FS Pattern Generator. (Which has 720p/60Hz
YPbPr output Pattern shown in Fig. 2)
=>  Model: 216 / Pattern: 65
5.2.1 Method of Auto Component Color Balance
1) Input the Component 720p/60Hz 7 Color Bar (MSPG-
925FS model:216, pattern:65) signal into Component.
2) Set the PSM to Dynamic mode in the Picture menu.
[Fig.1]
3) Press IN-START key on R/C for adjustment.
4) Press  the  G (Vol.+) key to operate the set, then it
becomes automatically.
5.3 Adjustment of RGB
*Required Equipments
8 Remote controller for adjustment
8 MSPG-925FS Pattern Generator
(Which has XGA [1024*768] 60Hz 8 color bar 100%
pattern shown in Fig. 3 )
5.3.1 Method of Auto RGB Color Balance
1) Input the PC 1024x768 @ 60Hz 7 Color Bar (MSPG-
925FS model:3, pattern:65)  signal into RGB. (using
D-sub to D-sub cable)
2) Set the PSM to Dynamic mode in Picture menu.
3) Press the IN-START key on R/C for adjustment.
[Fig.3]
4) Press  the  G (Vol.+) key operate To set , then it
becomes automatically.
5)  Auto-RGB OK means adjustment is completed
- 14 -
Before adjusting White-balance , the AV ADC
should be done
7. White Balance
*Test Equipment
8 Color Analyzer (CA-210/CH.9)
=> When you adjust LCD color temperature, on Color
analyzer (CA-210), you should use Channel 9 which
is Matrix compensated (White, Red, Green, Blue
revised) by CS-1000 and adjust in accordance with
White balance adjustment coordinate which is
specified on the next..
* Color temperature standards according to CSM and Module 
CSM
Plasma
LCD
Cool
11,000k         11,000k
Medium
9,300k           9,300k
Warm
6,500k           6,500k
* White balance adjustment coordinate and color temperature
8 PC (for communication through RS-232C) => UART
Baud rate : 115200 bps
8 l Luminance Y AV : upper 200 cd/ß≥ (Typ : 350 cd/m
2
) =>
Applying to Cool
- Connecting picture of  the measuring instrument (On
Automatic control )
Inside PATTERN is used when W/B is controlled. Connect
to auto controller or push control R/C IN-START => Enter
the mode of White-Balance, the pattern will come out.
* Auto adjustment Map(RS-232C)
*Auto-control interface and directions
1 Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10ux).
2.1 In case of PDP: Measure and adjust after sticking the Color
Analyzer (CA-100+, CA-210) to the side of the module.
2.2 In case of LCD: Adhere closely  the Color Analyzer (CA-210)
to the module less than 10cm distance, keep it with the
surface of the Module and Color Analyzer’s Prove
vertically.(80~100°).
2.3 Aging time  
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 15 minutes.
- In case of PDP, keep white pattern using inside pattern.
- In case of LCD, using ‘no signal’ or ‘full white pattern’ or the
others, check the back light on
Communication
Type
LT73A
Protocol
Baud Rate
Data bit
Stop bit
Parity
115200
8
1
None
Protocol
Index
Cmd 1 Cmd 2 Data Min Value Max Value
Setting
R-Gain_Normal
j
a
00(00)
128(80)
G-Gain_Normal
j
b
00(00)
128(80)
B-Gain_Normal
j
c
00(00)
128(80)
R-Gain_Warm
j
d
00(00)
128(80)
G-Gain_Warm
j
e
00(00)
128(80)
B-Gain_Warm
j
f
00(00)
128(80)
R-Gain_Cool
j
g
00(00)
128(80)
G-Gain_Cool
j
h
00(00)
128(80)
B-Gain_Cool
j
i
00(00)
128(80)
R-Offset_Normal
l
j
00(00)
128(80)
G-Offset_Normal
l
k
00(00)
128(80)
B-Offset_Normal
l
l
00(00)
128(80)
R-Offset_Warm
l
m
00(00)
128(80)
Offset_Warm
l
n
00(00)
128(80)
B-Offset_Warm
l
o
00(00)
128(80)
R-Offset_Cool
l
p
00(00)
128(80)
G-Offset_Cool
l
q
00(00)
128(80)
B-Offset_Cool
l
r
00(00)
128(80)
Inside Pattern signal
w
b
00
W/B Adjust start
Inside Pattern signal
w
b
10
Inside Pattern
Inside Pattern signal
w
b
ff
W/B Adjust end
- 15 -
8. Manual white Balance 
One of R Gain / G Gain / B Gain should be kept on 80, and
others  are controlled lowering from 80 
1) Press 'power on' of  the control R/C, set heat run to white by
pressing G, and heat run over 15 minutes 
(Set: RS-233 Host: PC, Baud Rate: 115200bps, Download:
Cortez).
2) Zero Calibrate CA-210, and when controlling, stick the sensor
to the center of LCD module surface.
3) Double click In-start key on Controlling R/C and get in ‘white
balance’.
4) Set test-pattern on and display inside pattern. Control is
carried out on three color temperature, COOL, MEDIUM,
WARM. (Control is carried out three times,)
5) When the R/G/B GAIN is 80 on OSD, it is the FULL DYNAMIC
Range of the Module. In order to control white balance without
the saturation of FULL DYNAMIC Range and DATA, one of R
Gain / G Gain / B Gain should be kept on 80, and other two is
controlled lowering from 80.
* Color Temperature: Cool, Medium, Warm
1. When R GAIN is set to 80
- Control G GAIN and B GAIN by lowering from 80. 
2. When B GAIN is set to 80
- Control R GAIN and G GAIN by lowering from 80.
3. When G GAIN is set to 80
- Control R GAIN and B GAIN by lowering from 80.
One of R Gain / G Gain / B Gain should be kept on 80, and
adjust other two lower than 80.
(When R/G/B GAIN are all 80, it is the FULL DYNAMIC
Range of Module) 
- 16 -
 
 
 
 
 
 
 
 
 
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