DOWNLOAD LG 42PC55-ZB (CHASSIS:PD73A) Service Manual ↓ Size: 13.57 MB | Pages: 53 in PDF or view online for FREE

- 5 -

Market

Broadcasting system

Receiving system

Scart Jack (2EA)

Video Input (1EA)

S-Video Input (1EA)

Component Input (1EA)

RGB Input(1EA)

HDMI Input(2EA)

Audio Input (3EA)

1

2

3

4

5

6

7

8

9

10

No

Item

Specification

Remark

UK, German, Italy, France, Sweden, Finland, Spain

1) PAL-BG

2) PAL-DK

3) PAL-I,I’

4) DVB-T(ID TV)

5) SECAM-L/L’

Analog : Upper Heterodyne

Digital : COFDM

PAL, SECAM

PAL, SECAM, NTSC

PAL, SECAM, NTSC

Y/Cb/Cr, Y/Pb/Pr

RGB-PC

HDMI-DTV & SOUND

PC Audio, Component, AV

4 System : PAL, SECAM, NTSC, PAL60

4 System : PAL, SECAM, NTSC, PAL60

L/R Input

- 6 -

These instructions are applied to all of the 42” PLASMA TV,
PD73A Chassis.

(1) Because this is not a hot chassis, it is not necessary to use

an  isolation  transformer.  However,  the  use  of  isolation
transformer will help protect test instrument.

(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of

25±5°C  of  temperature  and  65±10%  of  relative  humidity  if
there is no specific designation.

(4)  The  input  voltage  of  the  receiver  must  keep  100-240V~,

50/60Hz.

(5) The receiver must be operated for about 15 minutes prior

to the adjustment.

O

After  RGB  Full  white  HEAT-RUN  Mode,  the  receiver  must

be operated prior to adjustment.

O

Enter into HEAT-RUN MODE

1) Press the POWER ON KEY on R/C for adjustment.
2) OSD display and screen display PATTERN MODE.

[ Set is activated HEAT-RUN without signal generator in

this mode.

[ Single color pattern(RED/BLUE/GREEN) of HEAT-RUN 

mode uses to check PANEL.

: You can set channel memory by R/C for adjustment.

1) Press ADJ key on R/C for adjustment.
2) Press ENTER key on “System Control3”.
3) Press VOL + key on “Channel Recover”.

: You must adjust DTV 29 Channel and insert PCMCIA CARD

to socket.

1) If  PCMCIA  CARD  works  normally,  normal  signals  display

on screen.
But it works abnormally, “No CA module” words display on
screen.

(Va, Vs Voltage adjustments)

D.M.M. 1EA

: refer to Fig.1

1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P812, connect

- terminal to GND pin of P812.

3)  After  turning  VR901,  voltage  of  D.M.M  adjustment  as

same  as  Va  voltage  which  on  label  of  panel  right/top.
(Deviation; ±0.5V)

1) Connect + terminal of D.M.M to Vs pin of P812, connect

– terminal to GND pin of P812.

2)  After  turning  VR951,  voltage  of  D.M.M  adjustment  as

same  as  Va  voltage  which  on  label  of  panel  right/top.
(Deviation; ±0.5V)

If you turn on a still screen more than 20 minutes (Especially
Digital pattern, Cross Hatch Pattern), an afterimage may occur
in the black level part of the screen.

Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)

(Fig. 1) Connection diagram of power adjustment for measuring

<42” EAY32808901>

<42” 6709900019A>

- 7 -

1)  Adjusting  PC  with  S/W  for  writing  EDID  Data.(S/W  :  EDID

TESTER Ver.2.5)

2) A Jig for EDID Download
3)  Cable  :  Serial(9Pin  or  USB)  to  D-sub  15Pin  cable,  D-sub

15Pin cable, DVI to HDMI cable

1) As above Fig. 2, Connect the Set, EDID Download Jig, PC

& Cable.

2)  Turn  on  the  PC  &  EDID  Download  Jig.  And  Execute  the

S/W : EDID TESTER Ver,2.5.

3) Set up S/W option.

4) Power on the Set.

1) Init the data.

2) Load the EDID data.(Open File).

[Analog file] (for RGB)

[Digital file]  (for HDMI)

3) Set the S/W as below.
4) Push the “Write Data & Verify”button. And confirm “Yes”.
5) If the writing is finished, you will see the “OK” message.
6)  If  TV  has  two  HDMI,  you  must  download  two  times  for

each HDMI.

(Fig. 2) Connection Diagram of DDC download

Open File

Open File

- 8 -

1) Analog RGB.

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

1. [1]-Product ID

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

ex) Week : '03'     =>  '03' 

Year   : '2006' =>  '10'

4. [4]-Model Name(Hex): 

5. [5]-Checksum  : Changeable by total EDID data

2) HDMI1.

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

1. [1]-Product ID

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

ex) Week : '03'     =>  '03' 

Year   : '2006' =>  '10'

4. [4]-Model Name(Hex): 

5. [5]-Checksum  : Changeable by total EDID data

3) HDMI2.

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

* Please refer HDMI1

Model

Name

42PC55-ZB

42PC56-ZD

50PC55-ZB

50PC56-ZD

50PB56-ZA

Product ID

Product ID

EDID table

B19C

B39C

5FC3

61C3

63C3

Hex

9CB1

9CB3

C35F

C361

C363

40013

40015

50015

50017

50019

Model Name

42PC55-ZB

42PC56-ZD

50PC55-ZB

50PC56-ZD

50PB56-ZA

Hex Data

00 00 00 FC 00 34 32 50 43 35 35 2D 5A 42 0A 20 20 20

00 00 00 FC 00 34 32 50 43 35 36 2D 5A 44 0A 20 20 20

00 00 00 FC 00 35 30 50 43 35 35 2D 5A 42 0A 20 20 20

00 00 00 FC 00 35 30 50 43 35 36 2D 5A 44 0A 20 20 20

00 00 00 FC 00 35 30 50 42 36 35 2D 5A 41 0A 20 20 20

1

2

3

4

5

1

2

3

4

5

5

Model

Name

42PC55-ZB

42PC56-ZD

50PC55-ZB

50PC56-ZD

50PB56-ZA

Product ID

Product ID

EDID table

B29C

B49C

60C3

62C3

64C3

Hex

9CB2

9CB4

C360

C362

C364

40114

40116

50016

50018

50020

Model Name

42PC55-ZB

42PC56-ZD

50PC55-ZB

50PC56-ZD

50PB56-ZA

Hex Data

00 00 00 FC 00 34 32 50 43 35 35 2D 5A 42 0A 20 20 20

00 00 00 FC 00 34 32 50 43 35 36 2D 5A 44 0A 20 20 20

00 00 00 FC 00 35 30 50 43 35 35 2D 5A 42 0A 20 20 20

00 00 00 FC 00 35 30 50 43 35 36 2D 5A 44 0A 20 20 20

00 00 00 FC 00 35 30 50 42 36 35 2D 5A 41 0A 20 20 20

1

2

3

4

5

5