Adjustment Instruction - LG 32LB7D Service Manual

1. Application Range
This spec sheet is applied all of the LD73A chassis
manufactured at LG TV Plant all over the world.
2. Specification
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 sequence.
3) The adjustment must be performed at 25±5°C temperature
and 65±10% relative humidity if there is no specificed
designation.
4) The input voltage of the receiver must kept 100~220V,
50/60Hz.
5) Before adjustment, execute Heat-Run for 30 minutes at RF
no signal.
3. Method of Download for Cortez &
STi (When Rework) Connect
Computer & TV Set with RS 232C
Download Cable
3.1. Cortez Download
* Press "TILT" Key -> Check TV OSD "GProbe Mode" -> Run
"GProbe" Program As below picture
3.2. STi Download
* Press "TILT" Key -> Check TV OSD "STi5100 Mode" -> Run
"LG Term" Program As below picture
Copyright©2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes

ADJUSTMENT INSTRUCTION

4. ADC Calibration
* Caution: Using 'power on' button of the control
R/C , power on TV.
-.Baud rate :115200 bps
-.RS232 Host : PC
-.echo : none
< ADC Calibration >
ADC
MSPG925FS PAL
INPUT SELECT
Model: 202(PAL-BGDHI)
Pattern: 65
*PAL 7 Color Bar
* Caution : - System control RS-232 Host should be
"PC" for adjustment.
- Before AV ADC Calibration, execute the
"Panel size selection" (only LCD model)
4.1. Adjustment of AV
Mandatory point : All models are adjusted PAL in AV mode
* Required Equipments
1) Remote controller for adjustment.
2) MSPG-925FS Pattern Generator (Which has Video Signal:
7 Color Bar Pattern shown in Fig. 1).
-> Model : 202 / Pattern : 65 PAL-BGDHI (composite signal)
4.1.1. Method of Auto AV Color Balance(PAL_BGDHI).
1) Input the Video Signal : 7 Color Bar signal into AV3.
2) Set the PSM to Dynamic mode in the Picture menu.
3) Press IN-START key on R/C for adjustment.
4) Press the (Vol.+) key to operate the set, then it becomes
automatically.
5) After downloading complete, the 'OK' word appears.
6) Auto-RGB OK means the adjustment is completed.
- 8 -
AV Component
Model:215 (720P)
AV1 Pattern:65
* 720P/50Hz
7 Color Bar
[Fig.1]
LGE Internal Use Only
RGB-PC
Model: 3
(1024*768
60Hz)
Pattern:65