LG 37LC2DB (CHASSIS:LD61A) Service Manual ▷ View online
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet is applied to all of the LD61A chassis
manufactured at LG TV Plant all over the world.
manufactured at LG TV Plant all over the world.
2. Specification.
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
protect test instruments
2.2 Adjustment must be done in the correct sequence.
2.3 The adjustment must be performed at 25±5°C
2.3 The adjustment must be performed at 25±5°C
temperature and 65±10% relative humidity if there is no
specified designation.
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.
3. Channel Memory
3.1 Setting up the LGIDS
1) Install the LGIDS
2) After installation, restart your PC.
3) Extract [files.zip] to folder [c:\LGIDS\files]
4) Start LGIDS.
1) Install the LGIDS
2) After installation, restart your PC.
3) Extract [files.zip] to folder [c:\LGIDS\files]
4) Start LGIDS.
3.2 Channel memory method
1) Press TILT key in Adjust remocon(Automatic setting).
2) Setting up like bottom figure
(Confirmation: Press ADJ Key in the Adjust remocon.
Select "System Control" by using
1) Press TILT key in Adjust remocon(Automatic setting).
2) Setting up like bottom figure
(Confirmation: Press ADJ Key in the Adjust remocon.
Select "System Control" by using
/
(CH+/-) key, and
press
(ENTER))
3) Connect RS232 cable .(Use the general RS-232C Twisted
Serial Cable).
4) Operate LGIDS
5) Select "Hurricane" and "ALL" on Model dialog and check
5) Select "Hurricane" and "ALL" on Model dialog and check
your connection in Communication dialog.
(If your connection is ‘NG’, then set your PORT(COM1,2,3,…)
correctly. If your connection has completed, you can see
)
6) Select proper CH_memory file(*.nvm) for each model at
[Channel Download] => [Write Batch].
Next, select proper binary file(*.bin) including the CH
information for each model at
[Channel Download] => [NVRAM File].
7) Click the [Download] button.
It means the completion of the CH memory download if all
items show 'OK' and Status is changed by 'PASS' at the
lower right corner of the window
lower right corner of the window
4. Hudson Download
4.1 Hudson Download method
1) Press TILT key in Adjust remocon(Automatic setting).
2) Setting up like bottom figure
(Confirmation: Press ADJ Key in the Adjust remocon.
Select "System Control" by using
1) Press TILT key in Adjust remocon(Automatic setting).
2) Setting up like bottom figure
(Confirmation: Press ADJ Key in the Adjust remocon.
Select "System Control" by using
/
(CH+/-) key, and
press
(ENTER))
Ready
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3) Connect RS232 cable(Use Download Jig and general RS-
232C Twisted Serial Cable).
*Before upgrading "Hudson flash memory", push the switch
on the download jig ‘inside’.
4) Operate LGIDS.
5) Select "Hurricane" and "ALL" on Model dialog and check
5) Select "Hurricane" and "ALL" on Model dialog and check
your connection in Communication dialog.
(If your connection is ‘NG’, then set your PORT (COM1, 2,
3,…) correctly. If your connection has completed, you can
see )
6) First, select proper Batch file(*.flm) for each model at [ROM
Download] => [Batch File].
Second, select proper RAM file(*.hex) for each model at
[ROM Download] => [RAM File].
Third, select roper Flash File(*.hex) for each model at
[ROM Download] => [Flash File].
7) Click the [Download] button.
It means the completion of the Hudson download if all
items show 'OK' and Status is changed by 'PASS' at the
lower right corner of the window.
lower right corner of the window.
Before AV ADC Calibration, should be executed the
"Panel size selection
5. Select method of Panel size
5.1 Press ADJ Key in the Adjust remocon
5.2 Select "Panel Control" by using
5.2 Select "Panel Control" by using
/
(CH+/-) key, and
press
(ENTER)
5.3 Select "Panel Size", and change the panel size among
32, 37, 42 according to the inch of model name.
(If the model name is 37LC2D-EC, change the Panel size
from default value to 37.)
from default value to 37.)
5.4 After changing the panel size, push the EXIT Key
6. ADC Calibration
=> Caution: -System control RS-232 Host should be "PC" for
adjustment.
Before AV ADC Calibration, execute the "Panel size
selection"
Ready
ADC
RF/AV/S-VIDEO
Component
RGB-PC
MSPG925F
PAL
Model:217 (720P)
Model: 37
INPUT SELECT
AV4
Pattern:33
(1024*768
Model: 202 (PAL-BGDHI)
720P/60Hz 100%
60Hz)
Pattern: 33
Color Bar
Pattern: 33
PAL 100% Color Bar
6.1 Adjustment of RF/AV/S-VIDEO
* Required Equipments
* Required Equipments
- Remote controller for adjustment
- MSPG-925F Pattern Generator (Which has Video Signal:
100% Color Bar Pattern shown in Fig. 1)
=> Model: 202 / Pattern: 33
=> Model: 202 / Pattern: 33
Case1) EC and FC model use PAL-BGDHI (composite signal)
6.1.1 Method of Auto RF/AV/S-VIDEO Color Balance.
1) Input the Video Signal: 100% Color Bar signal into AV4
2) Set the PSM to Dynamic mode in the Picture menu
1) Input the Video Signal: 100% Color Bar signal into AV4
2) Set the PSM to Dynamic mode in the Picture menu
[Fig.1]
3) Press IN-START 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.
6.2 Adjustment of Component.
* Required Equipments
* Required Equipments
- Remote controller for adjustment
- l MSPG-925F Pattern Generator => Model: 217/Pattern: 33
(Which has 720p/60Hz YPbPr output Pattern shown in Fig. 2 )
6.2.1 Method of Auto Component Color Balance
1) Input the Component 720p/60Hz 100% Color Bar(MSPG-
1) Input the Component 720p/60Hz 100% Color Bar(MSPG-
925F model:217, pattern:33) signal into Component.
2) Set the PSM to Dynamic mode in the Picture menu
[Fig.2]
3) Press the IN-START key on R/C for adjustment.
4) Press the
4) Press the
(Vol.+) key to operate the set , then it becomes
automatically.
5) Auto-RGB OK means the adjustment is completed.
6.3 Adjustment of RGB
* Required Equipments
* Required Equipments
- Remote controller for adjustment
-l MSPG-925F Pattern Generator
-l MSPG-925F Pattern Generator
(Which has XGA [1024*768] 60Hz 100% Color Bar pattern
shown in Fig. 3)
6.3.1 Method of Auto RGB Color Balance
1) Input the PC 1024x768@60Hz 100% Color Bar pattern
1) Input the PC 1024x768@60Hz 100% Color Bar pattern
(MSPG-925F model:37, pattern:33) into RGB.
(Using D-sub to D-sub cable)
(Using D-sub to D-sub cable)
2) Set the PSM to Dynamic mode in Picture menu.
3) Press the IN-START key on R/C for adjustment
3) Press the IN-START key on R/C for adjustment
[Fig.3]
4) Press the
(Vol.+) key operate To set , then it becomes
automatically.
5) Auto-RGB OK means adjustment is completed.
Before White-balance, the AV ADC should be done.
7. White Balance
=> Caution: - System control RS-232 Host should be "PC" for
adjustment.
- AV ADC should be done before White-balance.
* Test Equipment
Color Analyzer ( CA-110)
PC (for communication through RS-232C) => UART Baud
rate : 115200
Pattern Generator (MSPG-925F)
PC (for communication through RS-232C) => UART Baud
rate : 115200
Pattern Generator (MSPG-925F)
* Target Value (PSM: Dynamic, CSM: Normal)
- Normal(9300K) x:0.283±0.003, y: 0.298±0.003
- Luminance(Y) AV/COMP: 250 Cd/m2 (Typ: 300 Cd/m2)
- Luminance(Y) AV/COMP: 250 Cd/m2 (Typ: 300 Cd/m2)
PC
: 300 Cd/m2 (Typ: 350 Cd/m2)
-> Reference Value(Automatically fixed)
- Cool(11000K) - x: 0.274±0.003, y: 0.286±0.003
- Warm(7200K) - x:0.303±0.003, y: 0.319±0.003
- Warm(7200K) - x:0.303±0.003, y: 0.319±0.003
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White balance
AV4
MSPG925F
High
Model : 202
*239Gray
Pattern : 47
*Pal Video
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SVC REMOCON
1
POWER
2
POWER ON
3
MUTE
4
P-CHECK
5
S-CHECK
6
ARC
7
CAPTION
8
TXT
9
TV/AV
10
TURBO SOUND
11
TURBO PICTURE
12
IN-START
13
ADJ
14
MPX
15
EXIT
16
APC(PSM)
17
ASC(SSM)
18
MULTIMIDIA
19
FRONT-AV
20
CH
21
VOL
22
ENTER
23
PIP CH-(OP1)
24
PIP CH+(OP2)
25
PIP SWAP(OP3)
26
PIP INPUT(OP4)
27
EYE
28
MENU
29
IN-STOP
30
STILL
31
TIME
32
SIZE
33
MULTI PIP
34
POSITION
35
MODE
36
PIP
37
TILT
38
0~9
To turn the TV on or off
To turn the TV on automatically if the power is supplied to the TV. (Use the
POWER key to deactivate): It should be deactivated when delivered.
To activate the mute function.
To check TV screen image easily.
To check TV screen sound easily
To select size of the main screen (Normal, Spectacle, Wide or Zoom)
Switch to closed caption broadcasting
To toggle on/off the teletext mode
To select an external input for the TV screen
To start turbo sound
To start turbo picture
To enter adjustment mode when manufacturing the TV sets.
To adjust the screen voltage (automatic):
In-start
To turn the TV on automatically if the power is supplied to the TV. (Use the
POWER key to deactivate): It should be deactivated when delivered.
To activate the mute function.
To check TV screen image easily.
To check TV screen sound easily
To select size of the main screen (Normal, Spectacle, Wide or Zoom)
Switch to closed caption broadcasting
To toggle on/off the teletext mode
To select an external input for the TV screen
To start turbo sound
To start turbo picture
To enter adjustment mode when manufacturing the TV sets.
To adjust the screen voltage (automatic):
In-start
mute
Adjust
AV(Enter into W/B adjustment mode)
W/B adjustment (automatic):
After adjusting the screen W/B adjustment Exit two times (Adjustment completed)
To enter into the adjustment mode. To adjust horizontal line and sub-brightness.
To select the multiple sound mode (Mono, Stereo or Foreign language)
To release the adjustment mode
To easily adjust the screen according to surrounding brightness
To easily adjust sound according to the program type
To check component input
To check the front AV
To move channel up/down or to select a function displayed on the screen.
To adjust the volume or accurately control a specific function.
To set a specific function or complete setting.
To move the channel down in the PIP screen.
To use as a red key in the teletext mode
To move the channel in the PIP screen
To use as a green key in the teletext mode
To switch between the main and sub screens
To use as a yellow key in the teletext mode
To select the input status in the PIP screen
To use as a blue key in the teletext mode
To set a function that will automatically adjust screen status to match
the surrounding brightness so natural color can be displayed.
To select the functions such as video, voice, function or channel.
To set the delivery condition status after manufacturing the TV set.
To halt the main screen in the normal mode, or the sub screen at the PIP screen.
Used as a hold key in the teletext mode (Page updating is stopped.)
Displays the teletext time in the normal mode
Enables to select the sub code in the teletext mode
Used as the size key in the PIP screen in the normal mode
Used as the size key in the teletext mode
Used as the index key in the teletext mode (Top index will be
displayed if it is the top text.)
To select the position of the PIP screen in the normal mode
Used as the update key in the teletext mode (Text will be
displayed if the current page is updated.)
Used as Mode in the teletext mode
To select the simultaneous screen
To adjust screen tilt
To manually select the channel.
After adjusting the screen W/B adjustment Exit two times (Adjustment completed)
To enter into the adjustment mode. To adjust horizontal line and sub-brightness.
To select the multiple sound mode (Mono, Stereo or Foreign language)
To release the adjustment mode
To easily adjust the screen according to surrounding brightness
To easily adjust sound according to the program type
To check component input
To check the front AV
To move channel up/down or to select a function displayed on the screen.
To adjust the volume or accurately control a specific function.
To set a specific function or complete setting.
To move the channel down in the PIP screen.
To use as a red key in the teletext mode
To move the channel in the PIP screen
To use as a green key in the teletext mode
To switch between the main and sub screens
To use as a yellow key in the teletext mode
To select the input status in the PIP screen
To use as a blue key in the teletext mode
To set a function that will automatically adjust screen status to match
the surrounding brightness so natural color can be displayed.
To select the functions such as video, voice, function or channel.
To set the delivery condition status after manufacturing the TV set.
To halt the main screen in the normal mode, or the sub screen at the PIP screen.
Used as a hold key in the teletext mode (Page updating is stopped.)
Displays the teletext time in the normal mode
Enables to select the sub code in the teletext mode
Used as the size key in the PIP screen in the normal mode
Used as the size key in the teletext mode
Used as the index key in the teletext mode (Top index will be
displayed if it is the top text.)
To select the position of the PIP screen in the normal mode
Used as the update key in the teletext mode (Text will be
displayed if the current page is updated.)
Used as Mode in the teletext mode
To select the simultaneous screen
To adjust screen tilt
To manually select the channel.
Shortcut keys
Shortcut keys
Shortcut keys
Use the AV
key to enter
the screen
W/B
adjustment
mode.
key to enter
the screen
W/B
adjustment
mode.
Shortcut keys
Shortcut keys
Shortcut keys
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