DOWNLOAD LG 42LB1R (CHASSIS:LP7BA) Service Manual ↓ Size: 4.4 MB | Pages: 33 in PDF or view online for FREE

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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

No

Item

Content

Remark

1. Product 

Dimension

Width

Length

Height

Unit

Before Packing

1033

288

750

mm

SET(With Stand)

After Packing

1119

374

858

mm

2. Product 

Weight

Only 

SET

29

Kg

With BOX

31

Kg

No

Item

Content

Remark

1. Product 

Dimension

Width

Length

Height

Unit

Before Packing

811

235

630

mm

SET(With Stand)

After Packing

896

300

720

mm

2. Product 

Weight

Only 

SET

22

Kg

With BOX

25.5

Kg

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This spec. sheet is applied to all of the LP7BA
chassis(Saturn Analog DVR) manufactured at LG TV Plant
all over the world.
Ex.) LP7BA: 32/37/42LB5RT-TB, 32/37/42LT81-ZF,

32/42LB9RT-MA

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

RF no signal.

* 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

:

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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

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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