LG 60PX950-UA / 60PX950-UF (CHASSIS:PU02B) Service Manual ▷ View online
8. White Balance adj.
8-1. Overview
(1) W/B adj.: Objective & How-it-works
1) Objective: To reduce each Panel’s W/B deviation
2) How-it-works: When R/G/B gain in the OSD is at 192, it
2) 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.
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.
8-2. Equipment
(1) Color Analyzer : CA-210 (NCG: CH 9 / WCG: CH12 /PDP
Module:CH10)
(2) Adj. Computer
(During auto adj., RS-232C protocol is needed)
(3) Adj. R/C
(4) Video Signal Generator MSPG-925F 720p/216Gray
(4) Video Signal Generator MSPG-925F 720p/216Gray
(Model:217, Pattern:78)
-> Only when internal pattern is not available
- Color Analyzer Matrix should be calibrated using CS-1000
8-3. Equipment connection map
8-4. Adj. Command (Protocol)
O
Protocol
<Command Format>
- LEN: Number of Data Byte to be send
- CMD: Command
- VAL: FOS Data
- CS: Checksum of sent Data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
- CMD: Command
- VAL: FOS Data
- CS: Checksum of sent Data
- A: Acknowledge
Ex) [Send: JA_00_DD] / [Ack: A_00_okDDX]
O
RS-232C Command used during auto-adj.
Ex) wb 00 00 -> Begin white balance auto-adj.
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(End)) -> Off-set adj.
jb 00 c0
...
...
wb 00 1f -> Gain adj. complete
*(wb 00 20(Start), wb 00 2f(End)) -> Off-set adj.
wb 00 ff -> End white balance auto-adj.
8-5. Auto Adj. method
(1) Set TV in adj. mode using POWER On Key
(2) Zero calibrate probe then place it on the center of the
(2) Zero calibrate probe then place it on the center of the
Display
(3) Connect Cable(RS-232C)
(4) Select mode in adj. Program and begin adj.
(5) When adj. is complete (OK Sign), check adj. status per
(4) Select mode in adj. Program and begin adj.
(5) When adj. is complete (OK Sign), check adj. status per
mode
(Warm, Medium, Cool)
(6) Remove probe and RS-232C cable to complete adj.
- Adj. must begin w/ command “wb 00 00”, and end “wb 00
ff” and adj. offset if needed.
- Offset adjust limit value.
Offset Min = 34 (Decimal)
Offset Max = 94 (Decimal)
Offset Max = 94 (Decimal)
8-6. Manual adj. method
Dynamic contrast : off
Dynamic color : off
OPC : Off
Energy saving mode : Off
Dynamic color : off
OPC : Off
Energy saving mode : Off
(1) Set TV Picture Mode to Standard and in Advanced
Control, set Dynamic Contrast and Color ‘ Off ’ .
(2) Set TV in adj. mode using POWER On Key
(3) Press ADJ key -> EZ adjust using adj. R/C
(4) Using CH + / - KEY, select 10.TEST PATTERN then press
(3) Press ADJ key -> EZ adjust using adj. R/C
(4) Using CH + / - KEY, select 10.TEST PATTERN then press
Enter to place in HEAT RUN mode and wait for 30
minutes.
minutes.
(4) Zero calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10 cm of the surface.
(5) Press ADJ key -> 7. White-Balance then press the cursor
to the right (KEY
G
)
(When
G
is pressed Full White internal pattern will be
displayed)
(6) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
(7) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature
(8) Offset Adjust in MEDIUM, WARM 2 modes of color
temperature ( Only THX Model )
V
If internal pattern is not available, use HDMI input. In EZ
Adj. menu 7.White Balance, you can select one of 3
options: None, Inner, HDMI. Default is inner. By selecting
HDMI, you can adjust using HDMI signal.
Adj. menu 7.White Balance, you can select one of 3
options: None, Inner, HDMI. Default is inner. By selecting
HDMI, you can adjust using HDMI signal.
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V
Adj. condition and cautionary items
(1) Lighting condition in surrounding area
Surrounding lighting should be lower than 10 lux. Try
to isolate adj. area into dark surrounding.
to isolate adj. area into dark surrounding.
(2) Probe location
- PDP : Color Analyzer (CA-100, CA-100+, CA210)
probe should be firmly attached to the Module
- LCD : Color Analyzer (CA-210) probe should be within
10cm and perpendicular of the module surface
(80°~ 100°)
(80°~ 100°)
- In case of LCD, B/L on should be checked using no
signal or Full white Pattern
8-7. Reference (White Balance adj.
coordinate and color temperature)
O
Standard color coordinate and temperature using CS-1000
O
Luminance: Full white 216 Gray
O
Standard color coordinate and temperature using CA-210(CH
10)
10)
- Gain color coordinate
O
Pattern : Full white 216 Gray
- Offset color coordinate : Only THX model
O
Pattern : Full white 50 Gray
O
Luminance : 5 ± 4 cd
9. 3D Function Test
(Pattern Generator MSPG-3233, HDMI mode NO. 371 ,
pattern No. 81)
(1) Please input 3D test pattern like below
(2) Enter 3D mode , then select side by side
(If you don’t wear a 3D Glasses, you will see the picture
like below)
like below)
(3) Put on the 3D Glasses, And block the right side of Glasses
(LEFT:OPEN[TEST], RIGHT:CLOSED)
And check the middle sides of picture , RED -> normal ,
others -> abnormal
And check the middle sides of picture , RED -> normal ,
others -> abnormal
(4) Put on the 3D Glasses, And block the right side of Glasses
(LEFT:CLOSED, RIGHT:OPEN[TEST])
And check the middle sides of picture , BLUE -> normal ,
others -> abnormal
And check the middle sides of picture , BLUE -> normal ,
others -> abnormal
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10. Option selection per country
10-1. Overview
O
O
Applied model: PU02B Chassis applied USA Model(Not
Canada, Mexico)
Canada, Mexico)
10-2. Method
(1) Press ADJ key on the Adj. R/C, then select Country Group
Menu
(2) Depending on destination, select KR or US, then on the
lower option, select US, CA, MX. Selection is done using
+, - KEY
10-3. Ship-out (Default) mode check
(Instop)
O
After final inspection, press In-Stop key of the Adj. R/C and
check that the unit goes to Stand-by mode.
check that the unit goes to Stand-by mode.
10-4. POWER Supply Unit PCB Ass'y Va/Vs
Voltage adjustment
.
[ Caution ]
Both Vs and Va voltage adjustment are necessary.
Both Vs and Va voltage adjustment are necessary.
(1) Model name: 50/60PX950-UA
(2) Va/Vs Adjustment Procedure
(2) Va/Vs Adjustment Procedure
1) Connect positive(+) terminal of DMM to Vs/Va pin,
connect negative(-) terminal to GND.
2) Turning ‘ Vs/Va ’ and adjust Vs/Va voltages to a value
which is written on a right/top label of a module.
( deviation ; ± 0.5V)
[ Caution ]
Each Power Supply Unit PCB assembly must be checked by
check JIG set.
(Because power PCB Ass’y damages to PDP Module, especially
Each Power Supply Unit PCB assembly must be checked by
check JIG set.
(Because power PCB Ass’y damages to PDP Module, especially
be careful)
[Caution]
Set up "RF mode(noise)" before a voltage adjustment.
Set up "RF mode(noise)" before a voltage adjustment.
11. USB Download (S/W Update,
*.epk File Download)
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is Low,
it didn’t work.
But your downloaded version is High, USB data is
automatically detecting
But your downloaded version is High, USB data is
automatically detecting
(3) Show the message “Copying files from memory”
(4) Updating is staring.
(5) Updating Completed, The TV will restart automatically.
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust TOOL OPTION again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
(4) Completed selecting Tool option.
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Model
Tool Tool Tool Tool Tool
option1 option2 option3 option4 option5
50PX950-UA
37536
31763
54408
4476
0
60PX950-UA
49824
31763
54408
4476
0
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