DOWNLOAD LG 42PC5D-UC / 42PC5DC-UC (CHASSIS:PA-73E) Service Manual ↓ Size: 11.64 MB | Pages: 50 in PDF or view online for FREE

- 17 -

[

(Automatic Adjustment)

[42PC5D-UC] & [50PC5D-UC]

[WARNING] RGB-Cut fixed value

If the model has a fixed value, the equivalent value
must be applied.

Fix one of three Gains (R Gain, G Gain, and B Gain)
at 192 and control the other two by reducing values
from 192.

(Manual Adjustment)

Required Equipment: CA-100 (CH 10), CA-100+ (CH 10), CA-
210 (CH-10)
--> To adjust color temperature of Plasma, CS-1000 is the

Color Analyzer and should be set to use CH 10 in which
white, red, green, and blue color are corrected. Conduct
the adjustment according to the coordinates for White
Balance adjustment in the table below.

(1) Enter ‘Ez - Adjust’ by pressing ADJ KEY on the Service

Remote Control.

(2) Select "9. TEST PATTERN" using CH +/- Key and HEAT

RUN at least 30 minutes by pressing the ENTER Key.

(3) Zero Calibrate of the Color Analyzer, then attach sensor to

PDP module surface when you adjust.

(4) Select ‘6. White-Balance’ of ‘Ez - Adjust’ by pressing the

ADJ KEY on the Service R/C. Then enter adjustment mode
by pressing the Right KEY (

G

) .

(The internal pattern of full white appears by pressing 

G

)

(5) The adjustment is conducted in three levels of color

temperature; COOL, MEDIUM, and WARM.

[WARNING] RGB-Cut fixed value

If the model has a fixed value, the equivalent
value must be applied.

[

Color temperature: Cool, Medium, Warm

(1) When R Gain is fixed at 192,

Control G Gain and B Gain by reducing them from 192.

(2) When B Gain is fixed at 192,

Control R Gain and G Gain by reducing them from 192.

(3) When G Gain is fixed to 192,

Control R Gain and B Gain by reducing them from 192.

Fix one of three Gains (R Gain, G Gain, and B Gain) at 192
and control the other two by reducing values from 192 to
prevent it from increasing.

(When RGB Gains are all 192, the module is in full dynamic
range.)

R Gain

G Gain

B Gain

R Cut

G Cut

B Cut

jg

jh

ji

Cool

ja

jb

jc

Mid

RS-232C COMMAND

[CMD ID DATA]

CENTER

(DEFAULT)(Decimal)

jd

je

jf

00

00

00

192

192

192

Warm

Min

Max

(Deci

mal)

64

64

64

Cool

64

64

64

Mid

64

64

64

Warm

- 18 -

[

High Level : 216gray

[The standard coordinates and color temperature for CS-1000]

[The standard coordinates and color temperature for CA-100/100+ (CH 10)]

[The standard coordinates and color temperature for CA-210(CH 10)]

Mode

Temp

∆

uv

Color Coordination

Cool

Medium

Warm

11000K

9300K

6500K

0.0000

0.0000

0.0000

x

0.276

0.285

0.314

y

0.283

0.293

0.324

Module

Maker

Filter

Mode

42”

XGA

42X4

LGE

LGE

41%

Glass

41%

Glass

50”

WXGA

50X4

Temp

∆

uv

Color Coordination

Cool

Medium

Warm

Cool

Medium

Warm

11200K

9400K

6500K

11100K

9400K

6500K

-0.002

-0.002

-0.002

-0.001

-0.002

-0.001

x

0.276±0.002

0.285±0.002

0.314±0.002

0.276±0.002

0.285±0.002

0.314±0.002

y

0.280±0.002

0.290±0.002

0.321±0.002

0.281±0.002

0.291±0.002

0.322±0.002

Module

Maker

Filter

Mode

42”

XGA

42X3

50” WXGA(50X4) 41% Glass Filter
This model can be adjusted by using the same color coordinates to 42” XGA (42X4) 41% Glass Filter.

LGE

41%

Glass

Temp

∆

uv

Color Coordination

Cool

Medium

Warm

11000K

9300K

6500K

0.0000

0.0000

0.0000

x

0.276±0.002

0.285±0.002

0.314±0.002

y

0.280±0.002

0.293±0.002

0.324±0.002

- 19 -

TV/CATV doesn’t display

Check TU4001 Pin9(Video output)

Can you see the normal signal?

Check the input(Pin63) of AV switch(IC5003).

Can you see the normal waveform?

Check the output(Pin56) of AV switch(IC5003).

Can you see the normal waveform?

Check the input(Pin1) of LPF(IC4006).

Can you see the normal waveform?

YES

YES

YES

NO

Could you measure voltage of TU4001 & IIC

lines?

Are they all normal?

Check the output(Pin8) of LPF(IC4006).

Can you see the normal waveform?

YES

Check the input(PinH26) of BCM3550(IC4006).
Measure waveform at C1010 because it s more

easy to check.

Can you see the normal waveform?

YES

YES

NO

You should check power line

& IIC lines.

YES

You should replace TUNER.

NO

After checking the Power of AV switch you should

decide to replace AV switch or not.

NO

After checking the Power of AV switch you should

decide to replace AV switch or not.

NO

After checking the Power of LPF you should decide to

replace LPF  or not.

NO

After checking the Power of LPF you should decide to

replace LPF  or not.

This board has big problem because Main

chip(BCM3550) have some troubles.

After checking thoroughly all path once again, You

should decide to replace BCM3550 or not.

- 20 -

Video doesn’t display

Check J5007 Pin3C

Can you see the normal waveform?

Check the input(Pin1 or Pin8) of AV

switch(IC5003). Pin1 is for video1,Pin8 is for

video 2.

Can you see the normal waveform?

Check the output(Pin56) of AV switch(IC5003).

Can you see the normal waveform?

Check the input(Pin1) of LPF(IC4006).

Can you see the normal waveform?

YES

YES

YES

NO

J5007 may have problem. Replace this Jack.

Check the output(Pin8) of LPF(IC4006).

Can you see the normal waveform?

YES

Check the input(PinH26) of BCM3550(IC4006).
Measure waveform at C1010 because it s more

easy to check.

Can you see the normal waveform?

YES

YES

NO

After checking the Power of AV switch you should

decide to replace AV switch or not.

NO

After checking the Power of AV switch you should

decide to replace AV switch or not.

NO

After checking the Power of LPF you should decide to

replace LPF  or not.

NO

After checking the Power of LPF you should decide to

replace LPF  or not.

This board has big problem because Main

chip(BCM3550) have some troubles.

After checking thoroughly all path once again, You

should decide to replace BCM3550 or not.