DOWNLOAD LG 50PC52-ZD (CHASSIS:PP78A) Service Manual ↓ Size: 13.76 MB | Pages: 39 in PDF or view online for FREE

- 13 -

<Analog (RGB) >

< Digital1 (HDMI/DVI1) >

< Digital2 (HDMI/DVI2) >

=> Detail EDID Options are below(1,2,3,4,5)

1. Product ID

2. Serial No :  Controlled on production line
3. Month, Year : Controlled on production line

ex) Monthly: '03'   =>  '03' 

Year:  '2005' =>  '0F'

4. Model Name :  model name -> LG TV

- LG TV

5. Checksum (7EH) -> Changeable by total EDID data.

(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.

:  Two  modes  of  Cool  and  Warm.(Medium  data  is

automatically calibrated by the cool data)

(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)

(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.

-  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.

Model

Name

50PC5R

(50PC51/52)

DEC

50007 (A)

50008 (D)

Product ID

HEX

C357

C358

EDID table

57C3

58C3

Color Coordinate

x

y 

0.283±0.002

0.293±0.002

0.329±0.002

11,000K

9,300K

6,500K

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

1

2

3

4

4

5

1

2

3

4

4

5

5

1

2

3

4

4

5

5

- 14 -

(3) DDC adjustment support command set.

* R/G/B GAIN max value : 80

-  Adjustment  mode  :  Two  modes  of  Cool  (Dynamic)  and

Warm(Mild).
(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. 

(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

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)

* 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.

- In case of decreasing the x, decreasing the R : fix G
- 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.

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.

(7)  When  adjustment  is  completed,  Exit  adjustment  mode

using EXIT key on R/C.

(1) Push the ADJ key in a Adjust Remote control.
(2)  Input  the  Option  Number  that  was  specified  in  the  BOM,

into the Shipping area.

(3) The work is finished, Push 

A

Key.

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

Color Coordinate

x

y 

0.283±0.002

0.293±0.002

0.329±0.002

11,000K

9,300K

6,500K

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

<Default Value on OSD>

- 15 -

1) Minute discharge does not occur at module.
2) Front LED does not activate.

Plug in the power cord

Start Check

No

Yes

Is the power cord
plugged in? 

Connect the cable.
Plasma(CN1)

No

Yes

Are the line filter and
PSU connected?

Replace the fuse.

No

Yes

Is the correct fuse for

the PSU in place?

Plasma(F101)

Connect the 13-14pin cable.

Next remove all cables connected to the PSU and
switch the AV voltage to manual.
If the ST-by 5V does not operate, replace the PSU.

No

Yes

Is the PSU and 13-

14pin cable connected

to the VSC board?

- 16 -

1) After lighting once it does not discharge minutely from the module. 
2) The relay falls.(there is an audible “Click”.)
3) The color of the front LED turns from green to red.

Is the Power Board

normal ?

Replace Power Board.

Is the output the normal Low/High
voltage except for the Stand-by 5V?

Yes

No

No

Are all the connectors

normal?

Replace the connector.

Replace the fuse.

Replace the Y-Board.

After checking each connector does
is operate correctly?

Yes

No

No

Is the Y-Board

normal?

Is the appropriate

fuse (FS2,FS3) on the

Y-B/D?

Is the output voltage
normal after removing the
P1 connector of the Y-B/D?

Yes

No

No

Replace the Z-Board.

Is the Z-Board

normal?

Is appropriate

fuse (FS1,FS2) on 

the Z-B/D?

Is the output voltage

normal after removing the

P1 connector of the Z-B/D?

Yes

No

No

Is the X- Board

normal?

Is the 

output voltage normal 

after removing the  P100, 110,

200, 210 connector of

the X-B/D?

After removing the P100, 110 and the output
voltage is normal : Replace the Right X-B/D
After removing the P200, 210 and the output
voltage is normal : Replace the Left X-B/D

No

Yes

Replace the fuse.

Yes

Start Check