LG 42PC5R-ZB / 42PC5R1-ZD (CHASSIS:PP78A) Service Manual ▷ View online
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(4) Push the “Write Data & Verify”button. And confirm “Yes”.
(5) If the writing is finished, you will see the “OK” message.
12. Adjustment of White Balance
12-1. Purpose and Principle for adjustment
of the color temperature
(1) Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
(2) Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 80 and decrease
the others.
the others.
12-2.Adjustment mode
: Two modes of Cool and Warm.(Medium data is
automatically calibrated by the cool data)
12-3. Required Equipment
(1) Remote control for adjustment.
(2) Color Analyzer.(CA-110 or same product) - CH : 10
(3) Auto W/B adjustment instrument.(only for Auto adjustment)
(2) Color Analyzer.(CA-110 or same product) - CH : 10
(3) Auto W/B adjustment instrument.(only for Auto adjustment)
12-4. Connecting diagram of equipment for
measuring
(For Automatic Adjustment)
(1) Enter the DDC adjust mode.
- Enter the white balance adjustment mode at the same
time heat-run mode when pushing the power on by power
only key.
only key.
- Maintain the white balance adjustment mode with same
condition of Heat-run.
-> Maintain after AC off/on in status of Heat-run pattern display.
(2) Release the DDC adjust 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(F3 00 00) from adjustment equipment.
- Need to transmit the aging off command to TV set after
finishing the adjustment.
* Standard color coordinate and temperature when using the
CA-110 or CA210 equipment.
* Synchronization relation between PSM and CSM.
(3) DDC adjustment support command set.
* R/G/B GAIN max value : 80
Color Coordinate
x
y
0.283±0.002
0.293±0.002
0.329±0.002
11000K
9300K
6500K
0.000
0.000
0.003
0.276±0.002
0.285±0.002
0.313±0.002
COOL
MEDIUM
WARM
Mode
Temp
uv
CSM
Remark
Cool
Normal
Warm
Dynamic
Standard
Mild
PSM
Adjustment
Aging On/Off
Input select
R GAIN
G GAIN
B GAIN
R GAIN
G GAIN
B GAIN
R GAIN
G GAIN
B GAIN
CMD(HEX)
F3
F4
16
18
1A
16
18
1A
16
18
1A
ADR
00
00
00
01
02
VALUE
FF/00
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
00 - FE
Detail
OO : OFF
01 : ON
FF : WB Ready
0x10 : TV
0x20 : AV1
0x21 : AV2
0x23 : AV3
0x40 : Component1
0x50 : RGB DTV
0x60 : RGB PC
0x90 : HDMI1 DTV
GAIN adjustment
CSM COOL
GAIN adjustment
CSM NORMAL
GAIN adjustment
CSM WARM
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12-5. Adjustment of White Balance
(For Manual adjustment)
- Adjustment mode : Two modes of Cool (Dynamic) and
Warm(Mild).
(Medium data is automatically calibrated by the cool data)
(Medium data is automatically calibrated by the cool data)
- Color analyzer(CA110, CA210) should be used in the
calibrated ch by CS-1000.(PDP : CH10)
- Operate the zero-calibration of the CA-110 or CA-210, then
stick sensor to the module when adjusting.
- For manual adjustment, it is also possible by the following
sequence.
(1) Select RF no signal by pressing “POWER ON” key on
remote control for adjustment then operate heat run more
than 15 minutes.
than 15 minutes.
(If not executed this step, the condition for W/B will be differ.)
(2) Changing to the av mode by pushing the input or front av
(2) Changing to the av mode by pushing the input or front av
key.(av mode : av1 or av2 or av3)
(3) Display the internal pattern of the VCT-Pro IC by pushing
the IN-START.
(4) Stick sensor to center of the screen and select each items
(Red/Green/Blue Gain and Offset) using
D
/
E
(CH+/-) key
on R/C.
(5) Adjust R Gain / B Gain using
F
/
G
(VOL+/-) key on R/C.
(6) Adjust two modes of Cool(Dynamic) and Warm(Mild) as
below figure.
(Fix the one of R/G/B and change the others)
1. Push the one time the in-start key : Dynamic(Cool)
2. Push the two more the in-start key : Mild(Warm)
(Fix the one of R/G/B and change the others)
1. Push the one time the in-start key : Dynamic(Cool)
2. Push the two more the in-start key : Mild(Warm)
* Refer to the below case to know what value is fixed.
* CASE
- First adjust the coordinate much away from the target
value(x, y).
1) x, y > target
(1) Decrease the R, G.
2) x, y < target
(1) First decrease the B gain.
(2) Decrease the one of the others.
(2) Decrease the one of the others.
- In case of decreasing the x, decreasing the R : fix G
- In case of decreasing the y , decreasing the G : fix R
- In case of decreasing the y , decreasing the G : fix R
3) x > target , y < target
(1) First decrease B, so make y a little more than the target.
(2) Adjust x value by decreasing the R.
(2) Adjust x value by decreasing the R.
4) x < target , y > target
(1) First decrease B, so make x a little more than the target.
(2) Adjust x value by decreasing the G.
(2) Adjust x value by decreasing the G.
(7) When adjustment is completed, Exit adjustment mode
using EXIT key on R/C.
13. Input the Shipping Option Data
(1) Push the ADJ key in a Adjust Remote control.
(2) Input the Option Number that was specified in the BOM,
(2) Input the Option Number that was specified in the BOM,
into the Shipping area.
(3) The work is finished, Push
A
Key.
14. Default Value in Adjustment mode
(Default values maybe modified the module condition)
14-1. White Balance
<Default Value on OSD>
16. Sound spec.
Color Coordinate
x
y
0.283±0.002
0.293±0.002
0.329±0.002
11000K
9300K
6500K
0.000
0.000
0.003
0.276±0.002
0.285±0.002
0.313±0.002
COOL
MEDIUM
WARM
Mode
Temp
uv
Item
Dielectric Voltage (AC <-> FG)
Dielectric Voltage (Without FG)
Value
1.5
1.5
3
3
Unit
kV
kV
Remark
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
At 100mA for 1sec (Line)
At 100mA for 1min (OQC)
Item
Min
Typ
Max
Unit
Remark
Audio Practical Max Output, L(Mono)/R
9
10
12
W
PDP
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TROUBLESHOOTING
1. No power
(1) Symptom
1) It is not discharged minutely from the module.
2) Light does not come into the front LED.
2) Light does not come into the front LED.
(2) Check process
Plug in a power cord
No
Yes
Is plug in power
cord inserted ?
cord inserted ?
Connect a cable.
Plasma(CN1), LCD(SC100)
Plasma(CN1), LCD(SC100)
No
Yes
Is the Line Filter and
PSU connected?
PSU connected?
Replace the fuse.
No
Yes
Is the fuse of PSU
normal? Plasma(F101),
LCD(f100)
Connect the 13-14pin cable.
After all cables connect is removed
to PSU, the AC voltage marking is
authorized on manual.
When ST-by 5V is not operated,
replace PSU.
to PSU, the AC voltage marking is
authorized on manual.
When ST-by 5V is not operated,
replace PSU.
No
Yes
Is it connected
that PSU and 13-14pin
cable in VSC
board?
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2. Protect mode
(1) Symptom
1) After once shining, it does not discharge minutely from module.
2) The relay falls.(The sound is audible “Click”.)
3) It is converted with the color where the front LED is red from green.
2) The relay falls.(The sound is audible “Click”.)
3) It is converted with the color where the front LED is red from green.
(2) Check following
Is the Power Board
normal ?
Replace Power Board.
Is output the normality Low/High
voltage except Stand-by 5V?
voltage except Stand-by 5V?
Yes
No
No
Is the each
connector normal?
Replace the connector.
Replace the fuse.
Replace Y-Board.
After connecting well each connector,
the normality it operates?
the normality it operates?
Yes
No
No
Is the Y-Board
normal?
Is the fuse
(FS2,FS3) on Y-B/D
normal?
Is the output voltage
normal after remove P1
connector of Y-B/D?
normal after remove P1
connector of Y-B/D?
Yes
No
No
Replace Z-Board.
Is the Z-Board
normal?
Is the fuse
(FS1,FS2) on Z-B/D
normal?
Is the output voltage
normal after remove P1
connector of Z-B/D?
Yes
No
No
Is the X- Board
normal?
Is the
output voltage
normal after remove P1, 2,
3, 4, 5 connector of
X-B/D?
After remove P1, P2, P3 output voltage
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace Left X-B/D
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace Left X-B/D
No
Yes
Replace the fuse.
Yes
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