DOWNLOAD LG 22LK230-MA (CHASSIS:LP92R) Service Manual ↓ Size: 4.02 MB | Pages: 36 in PDF or view online for FREE

Model
22LK230-MA (CHASSIS:LP92R)
Pages
36
Size
4.02 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
22lk230-ma-chassis-lp92r.pdf
Date

LG 22LK230-MA (CHASSIS:LP92R) Service Manual ▷ View online

- 9 -
5. SET assembly adjustment method
5.1. Input Area-Option
(1) Profile : Must be changed the Area option value because
being different of each Country’s Language and
signal Condition.
(2) Equipment : Adjustment remote control.
(3) Adjustment method 
- The input methods are same as other chassis.(Use IN-
START key on the Adjustment remote control.)
Refer to Job Expression of each main chassis assembly
(EBTxxxxxxxx) for Option value.
5.2. Adjustment of White Balance
- Purpose : Adjust the color temperature to reduce the
deviation of the module color 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 : Three modes - Cool / Medium / Warm
(Medium data is automatically calibrated by the Cool data)
- Required Equipment
1) Remote control for adjustment 
2) Color Analyzer : CA100+ or CA-210 or same product
- LCD TV(ch : 9)
(should be used in the calibrated ch by CS-1000)
3) Auto W/B adjustment instrument(only for auto adjustment)
5.2.1. Connecting diagram of equipment for measuring
(For Automatic Adjustment)
* LP92A Support I2C Interface For ADC/DDC Adjustment.
(1) Enter the adjustment mode of DDC
- 22 Set command delay time : 50 ms
- Enter the DDC adjustment mode at the same time heat-
run mode when pushing the power on by power only key.
- Maintain the DDC adjustment mode with same condition
of Heat-run => Maintain after AC off/on in status of Heat-
run pattern display)
(2) Release the DDC adjustment mode
- Release the adjust mode after AC off/on or std-by off/on
in status of finishing the Hear-run mode
- Release the Adjust mode when receiving the aging off
command(WB 00 FF) from adjustment equipment.
- Need to transmit the aging off command to TV set after
finishing the adjustment.
- Check DDC adjust mode release by exit key and release
DDC adjust mode)
(3) Enter the adjust mode of white balance
- Enter the white balance adjustment mode with aging
command (F3, 00, 00)
(4) Release the adjust mode of white balance
- Release the white balance adjustment mode with aging
command(F3, 00, FF)
* Luminance min value is 150cd in the Cool/Medium/Warm
mode(For LCD)
5.2.2. Adjustment of White Balance (for Manual adjustment)
(1) Color analyzer(CA100+, CA210) should be used in the
calibrated ch by CS-1000
(2) Operate the zero-calibration of the CA100+ or CA-210,
then stick sensor to the module when adjusting.
(3) For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run by pressing “POWER
ON” key on remote control for adjustment then operate
heat run longer than 15 minutes. (If not executed this
step, the condition for W/B may be different.)
2) Push “Exit” key.
3) Change to the AV mode by remote control.
4) Input external pattern (85 % white pattern)
5) Push the ADJ key two time(entering White Balance
mode) -> Enter “04 13” (Password)
6) Stick the sensor to the center of the screen and select
each items (Red/Green/Blue Gain and Offset) using
D
/
E
(CH +/-) key on R/C..
7) Adjust R/ G/ B Gain using 
F
/
G
(VOL +/-) key on R/C.
8) Adjust three modes all (Cool/ Medium/ Warm) : Fix the
one of R/G/B gain and change the others.
9) When adjustment is completed, Exit adjustment mode
using EXIT key on R/C.
* CASE
First adjust the coordinate far away from the target value(x, y).
1) x, y > target
i) Decrease the R, G. 
2) x, y < target
i) First decrease the B gain, 
ii) Decrease the one of the others.
3) x > target, y < target
i) First decrease B, so make y a little more than the target.
ii) Adjust x value by decreasing the R
4) x < target, y > target
i) First decrease B, so make x a little more than the target.
ii) Adjust x value by decreasing the G
(4) Standard color coordinate and temperature when using the
CA100+ or CA210 equipment
(Small size inch’s color coordinate is different from others,
So use below table.)
To check the Coordinates of White Balance, you have to
measure at the below conditions.
Picture Mode : User 1
Dynamic Contrast : Off
Dynamic Colour : Off
(If you miss the upper condition, the coordinates of W/B
can be lower than the spec.)
Coordinate 
Mode 
x y 
Temp
uv∆
Cool 0.280 
± 0.002
0.283 
± 0.002
9,300 
K
0.000
Medium
0.290 ± 0.002
0.295 ± 0.002
8,000 K
0.000
Warm
0.308 ± 0.002
0.319 ± 0.002
6,500 K
0.000
- 10 -
300
200
530
540
401
400
900
510
120
LV
1
910
810
A2
A10
820
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by       in the Schematic Diagram and EXPLODED VIEW. 
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
[AV]
MNT_ROUT
CVBS_LIN
D102
30V
R104
10K
R101
12K
R103
10K
D107
30V
CVBS_RIN
MUTE_LINE
R102
12K
MNT_LOUT
CVBS_VIN
R110
75
D108
30V
D101
30V
MUTE_LINE
C105
10uF
16V
C104
10uF
16V
C106
560pF
50V
READY
C107
560pF
50V
READY
R128
1K
R127
1K
C103
5600pF
50V
C102
5600pF
50V
R109
220K
R108
220K
JK101
PPJ234-03
5A
[RD1]O-SPRING
6A
[RD1]E-LUG
4A
[RD1]CONTACT
7B
[WH1]E-LUG-S
5B
[WH1]O-SPRING
7C
[RD2]E-LUG-S
5C
[RD2]O-SPRING
4C
[RD2]CONTACT
5D
[WH2]O-SPRING
4E
[YL]CONTACT
5E
[YL]O-SPRING
6E
[YL]E-LUG
16.5V_AOUT
R114
47
FOR DEBUG
Q101
ISA1530AC1
FOR DEBUG
E
B
C
R106
220
FOR DEBUG
R111
470
FOR DEBUG
R112
68
FOR DEBUG
JP101
MNT_VOUT_T
ZD101
SD05
ZD102
SD05
Q105
MMBT3904(NXP)
E
B
C
Q106
MMBT3904(NXP)
E
B
C
Q102
MMBT3904(NXP)
FOR DEBUG
E
B
C
Q103
MMBT3904(NXP)
E
B
C
Q104
MMBT3904(NXP)
E
B
C
INPUT
INPUT
EAX64207701
2011/5/6
1  7
POP NOISE
POP NOISE
AV IN/OUT
GAIN X 4
FOR DEBUG
THE    SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS 
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE    SYMBOL MARK OF THE SCHEMETIC.
TXCE3+
TXCE3-
TXCLKE+
TXCLKE-
TXCE2+
TXCE2-
TXCE1+
TXCE1-
TXCE0+
TXCE0-
LED_KEY
L203
MBW3216-501TF
500-ohm
LED_POWER
ST_5V
3.3V_M
IR
KEY1
5V_LCD
TXCE0+,TXCE0-,TXCE1+,TXCE1-,TXCE2+,TXCE2-,TXCE3+,TXCE3-,TXCLKE+,TXCLKE-
C206
100pF
50V
READY
C205
47pF
50V
READY
C209
100pF
50V
READY
C208
100pF
50V
C204
100pF
50V
READY
C203
0.1uF
50V
C202
0.1uF
50V
READY
C201
0.1uF
50V
C207
0.1uF
50V
C212
100pF
50V
READY
KEY2
ST_3.3V
R203
10K
R206
4.7K
P201
12507WR-08L
1
KEY1
2
KEY2
3
GND
4
+ST_5V
5
GND
6
IR
7
LED_KEY
8
LED_POWER
9
R230
0
JEIDA
P204
FF10001-30
1
30
2
29
3
28
4
27
5
26
6
25
7
24
8
23
9
22
10
21
11
20
12
19
13
18
14
17
15
16
16
15
17
14
18
13
19
12
20
11
21
10
22
9
23
8
24
7
25
6
26
5
27
4
28
3
29
2
30
1
31
.
R229
0
22"LGD/Tsinghua
ZD200
5.6V
READY
ZD204
5.6V
READY
ZD205
5.6V
READY
ZD201
5.6V
ZD202
5.6V
READY
IR & LED
LVDS/IR_LED_KEY
HD(22")
LVDS/IR/KEY
EAX64207701
2011/5/6
2  7
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