DOWNLOAD LG 42LB9RTA (CHASSIS:LP7BB) Service Manual ↓ Size: 5.26 MB | Pages: 31 in PDF or view online for FREE

- 9 -

No

Resolution

H-freq(kHz)

V-freq.(kHz)

Pixel clock(MHz)

Remarks

1.

720*480

31.47

59.94

27.000

SDTV 480P

2.

720*480

31.50

60.00

27.027

SDTV 480P

3.

720*576

31.25

50.00

27.000

SDTV 576P

4.

1280*720

44.96

59.94

74.176

HDTV 720P

5.

1280*720

45.00

60.00

74.250

HDTV 720P

6.

1280*720

37.50

50.00

74.25

HDTV 720P 50H

7.

1920*1080

33.72

59.94

74.176

HDTV 1080I

8.

1920*1080

33.75

60.00

74.250

HDTV 1080I

9.

1920*1080

28.125

50.00

74.250

HDTV 1080I 50Hz

10.

1920*1080

67.5

60.00

148.5

HDTV 1080P

11.

1920*1080

56.25

50

148.5

HDTV 1080P 50Hz

- 10 -

This  spec.  sheet  is  applied  to  all  of  the  LP7BB  chassis
(Saturn  Analog  DVR)  manufactured  at  LG  TV  Plant  all  over
the world.

2.1 Because  this  is  not  a  hot  chassis,  it  is  not  necessary  to

use an isolation transformer. 

However,  the  use  of  isolation  transformer  will  help  to
protect test instruments.

2.2 Adjustment must be done in the correct sequence.
2.3 The  adjustment  must  be  performed  at  25±5°C

temperature  and  65±10%  relative  humidity  if  there  is  no
specified designation.

2.4 The  input  voltage  of  the  receiver  must  be  kept  between

100-220V, 50/60Hz.

2.5 Before  adjustment,  execute  Heat-Run  for  30  minutes  at

Full White mode.(Power on key)

* Channel memory

- Download  the  channel  data  from  BOM  to  EEPROM  by

using LGIDS.

* Option adjustment following BOM 

- Tool Option1
- Tool Option2
- Area Option

(Fig.1)

1) Push the ADJ key in the Adjust Remocon.
2) Input  the  Option  Number  that  was  specified  in  the  BOM,

into the Shipping area.

3) Select "Tool Option1/ Tool Option2/ Area Option" by using

(CH+/-)  key  ,  and  press  the  number  key(0~9)

consecutively

ex) If the value of Tool Option1 is 7, input the data using

number key "7" (Fig. 1)

Auto AV Color Balance
Adjustment of White Balance
Auto Component Color Balance adjustment

- Standard equipment : MSPG925FA

Auto RGB Color Balance adjustment

- Standard equipment : MSPG925FA

(At  DVR  model  Case,  Please  check  DVR  function  like

following list )

Checking DVR Function and HDD

Check DVR Function as follow on 4.2 and find HDD failure
under malfunction.

5.1. HDD FORMAT
1) Assemble MAIN , DVR Board.
2) HDD Format in progress words will create automatically.  
3) Please, wait for 30~40 seconds.

5.1.1. HDD Format in progress 

5.1.2. HDD Format completed 

5.2. Sub  Program  Download  for  "DVR"  by  using  USB

memory stick

1) connect USB memory stick to SET
2) Set power off -> ON

- DVR s/w will be installed automatically

LP7BA  LPL

42 Normal

S/W Version

X.XX

DVR Version

X.XX

UTT

XX hr

Tool Option1

7

Tool Option2

161

Area Option

16

:

- 11 -

Caution  

* Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists

=> Caution : - Never  connect  HDMI  &  DVI-D  &  DVI-A  Cable

at the same time.

- Use the proper cables below for EDID Writing

6.1. Data
6.1.1 ANALOG(256 Bytes )

BLOCK1 (128BYTE)

6.1.2 HDMI(256 Bytes )

BLOCK1 (128BYTE)

BLOCK2 (128BYTE)

=> Caution : - System  control  RS-232  Host  should  be  "PC"

for adjustment.

Press  the  FRONT-AV  KEY  on  R/C  for  converting  input
mode.
(change RS-232 Host : pc, Band Rate : 115200bps)

7.1  Adjustment of RF/AV/S-VIDEO

* Required Equipments
- Remote controller for adjustment
- 802F Pattern Generator, Master (MSPG-925FA), etc.
- MSPG-925FA Pattern Generator

(Which  has  Video  Signal:  100%  Color  Bar  Pattern

shown in Fig. 2)

=> Model: 202 / Pattern : 65

(Fig. 2)

7.1.1 Method of Auto RF/AV/S-VIDEO Color Balance.

1) Press the FRONT-AV KEY on R/C for converting input

mode.

2) Input the Video Signal: 100% Color Bar signal into AV
3) Set the PSM to Dynamic mode in the Picture menu.
4) Press INSTART key on R/C for adjustment.
5) Press  the 

(Vol.  +)  key  to  operate  the  set,  then  it

becomes automatically

6) Auto-RGB OK means the adjustment is completed

7.1.2 Requirement

- This AV color balance adjustment should be performed

before White Balance Adjustment.

- After  AV  color  balance  adjustment,  Change  the  mode

from AV to RF.

(Cancel Heat-run mode.)

ADC

RF/AV/S-VIDEO

Component

RGB

MSPG925FA

PAL

NTSC

Model:217 720P  

Model: 60

INPUT

AV3-ZF

VIDEO1 -MA

Pattern:65

1024*768 60Hz

SELECT AV1-TB

* 100% Color Bar

Pattern: 65

Model: 202

Model:201 

* 100% Color Bar

(PAL-BGDHI)

(NTSC)

Pattern: 65

Pattern: 65

* 100% Color Bar * 100% Color Bar

- 12 -

7.2  Adjustment of Component.

* Required Equipments
- Remote controller for adjustment
- 802F Pattern Generator, Master (MSPG-925FA), etc
- MSPG-925FA Pattern Generator 

(Which  has  720p@60Hz  YPbPr  signal  :  100%  Color

Bar Pattern shown in Fig. 3 )

=> Model: 217 / Pattern: 65
- It  is  very  import  to  use  correct  adjustment  pattern  like

Fig.3. 

a. Within the pattern, color sequence should be aligned
: White-Yellow-Cyan-Green-Magenta-Red-BLUE-

BLACK

(If  color  sequence  is  reversed  (Black  ->  …->  White),

reverse  the  pattern  with  REV  key,  when  using  Master
pattern generator like MSPG-925)

b. If Minimum Black Level and/or Maximum White Level

is not correct, Do select 100% Color Bar Pattern.

(Fig. 3)

7.2.1 Method of Auto Component Color Balance

1) Input  the  Component  720p  100%  Color  Bar(MSPG-

925FA model:217, pattern:65) signal into Component.

(MH : component 1 )

2) Set the PSM to Dynamic mode in the Picture menu
3) Press the INSTART key on R/C for adjustment
4) Press  the 

(Vol.  +)  key  to  operate  the  set,  then  it

becomes automatically

5) Auto-RGB OK means the adjustment is completed

7.3  Adjustment of RGB

* Required Equipments
- Remote controller for adjustment
- 802F Pattern Generator, Master (MSPG-925FA), etc
- MSPG-925FA Pattern Generator 
(Which  has  XGA  [1024*768]  60Hz  PC  Format  output

signal : 100% Color Bar Pattern shown in Fig. 4 )

- It  is  very  import  to  use  correct  adjustment  pattern  like

Fig. 4.  

a. Within the pattern, color sequence should be aligned

: White-Yellow-Cyan-Green-Magenta-Red-BLUE-

BLACK

(If  color  sequence  is  reversed  (Black  ->  …->  White),

reverse  the  pattern  with  REV  key,  when  using  Master
pattern generator like MSPG-925)

b. If  Minimum  Black  Level  and/or  Maximum  White  Level

is not correct, Do select 100% Color Bar Pattern

(Fig. 4)

7.3.1 Method of Auto RGB Color Balance

1)  Input  the  PC  1024x768  @  60Hz  with  100%  color  bar

pattern like Fig.4. into RGB.

(Ex. MSPG-925FA, model:60, pattern:65)

2) Set the PSM to Dynamic mode in Picture menu
3) Press the INSTART key on R/C for adjustment
4) Press  the 

(Vol.  +)  key  operate  To  set  ,  then  it

becomes automatically

5) Auto-RGB OK means adjustment is completed