37LG50D (CHASSIS:LE81D) - LG TV Service Manual (repair manual). Page 9

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This spec. sheet is applied to Hong Kong DTV manufactured
at LG TV Plant all over the world.

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) Adjustment must be done in the correct sequence.
3) The adjustment must be performed at 25±5°C temperature

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

4) The input voltage of the receiver must be kept between

100-220V~, 50/60Hz.

5) Before adjustment, execute Heat-Run for 5 minutes at Full

White mode.(Power on key)

<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, BaudRate:115200bps)

<Note>
HDMI1, 2 & Volume 30, 50, 100 of FCR R/C is available only
DFT(Discrete Function Test) Mode.

1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc.
3) MSPG-925FA Pattern Generator (Which has Video

Signal : 100% Color Bar Pattern shown in Fig. 1)

-> Model: 202 / Pattern : 65

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 Vivid mode in the Picture menu.
4) Press ADJ key on R/C for adjustment.
5) Press the 

G

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

automatically.

6) Auto-RGB OK means the adjustment is completed.

1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc. 
3) MSPG-925FA Pattern Generator(Which has 720p@60Hz

YPbPr signal : 100% Color Bar Pattern shown in Fig. 1)

-> Model: 217 / Pattern: 65

4) It is very import to use correct adjustment pattern like Fig.1).
# Within the pattern, color sequence should be aligned
: White-Yellow-Cyan-Green-Gray-Red-BLUE-BLACK
(If color sequence is reversed (Black -> …-> White),
reverse the pattern with REV key, when using Master
pattern generator like MSPG-925)
# If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.

1) Input the Component1 720p 100% Color Bar (MSPG-

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

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

G

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

automatically.

5) Auto-RGB OK means the adjustment is completed.

1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc. 
3) MSPG-925F Pattern Generator

(Which has XGA [1024*768] 60Hz PC Format output
signal : 100% Color Bar Pattern shown in Fig. 1).

4) It is very import to use correct adjustment pattern like Fig.1.
# 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)
# If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.

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

pattern like Fig.1. into RGB. 

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

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

G

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

automatically.

5) Auto-RGB OK means adjustment is completed.

*Cause:Don’t push “In-stop” key after PCB assembly adjustment.

ADC

RF/AV/S-VIDEO

Component

RGB-PC

MSPG925FA PAL

Model:217 (720P) Model: 60 

INPUT SELECT      AV1

Pattern:65

1024*768 60Hz

Model:202 (PAL-BGDHI) * 100% Color Bar

Pattern: 65

Pattern: 65

*100% Color bar

* 100% Color Bar

<Fig. 1>