DOWNLOAD LG 42PC5R-TB (CHASSIS:PP78A) Service Manual ↓ Size: 24.05 MB | Pages: 38 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

42PC5R

(42PC51)

DEC

40079 (A)

40080 (D)

Product ID

HEX

9C8F

9C90

EDID table

8F9C

909C

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