Read LG 50PG6900-ZF (CHASSIS:PD84A) Service Manual online
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1. Application Range
This spec sheet is applied all of the PD84A chassis by
manufacturing LG TV Plant or sort plants.
manufacturing LG TV Plant or sort plants.
2. Specification
Caution: The module keeping condition
O
The module keeping condition: The normal temperature
condition(more than 15°C)
--> Immediately the line supply.
--> Immediately the line supply.
O
The module keeping condition: 0°C
--> The module must be kept for more than 2 hours at the
normal temperature.
O
The module keeping condition: -20°C
--> The module must be kept for more than 3 hours at the
normal temperature.
O
The case of Gu-mi factory at the winter season.
--> The module must be kept for more than 5 minutes at
the heating zone(40°C~45°C).
(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.
However, the use of isolation transformer will help protect
test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
there is no specific designation.
(4) The input voltage of the receiver must keep 100~240V,
50/60Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment.
O
After RGB Full White in HEAT-RUN Mode, the receiver
must be operated prior to the adjustment.
O
Enter into HEAT-RUN MODE
1) Press the POWER ON KEY on R/C for adjustment.
2) OSD display and screen display PATTERN MODE.
2) OSD display and screen display PATTERN MODE.
- Set is activated HEAT run without signal generator in this
mode.
- Caution: If you turn on a still screen more than 20 minutes
(Especially digital pattern, cross hatch pattern), an after
image may be occur in the black level part of the
screen.
image may be occur in the black level part of the
screen.
PCB assembly Adjustment Method
Caution: Using ‘power on’ button of the control R/C, power on
TV.
TV.
[ ADC Calibration Protocol (RS232)
- Baud rate : 115200 bps
- RS232 Host : PC
- echo : none
- RS232 Host : PC
- echo : none
3. ADC Adjustment
3-1. Adjustment of AV(CVBS)
O
Standard equipment : 802F Pattern Generator. Master
Pattern Generator(MSPG-925, etc) or same product
O
Required Equipment
1) Remote controller for adjustment
2) MSPG-925FS Pattern Generator (Which has Video
2) MSPG-925FS Pattern Generator (Which has Video
Signal: 7 Color Bar Pattern shown in Fig. 1).
- Model: 202 / Pattern: 65 EC and FC model use PAL-
- Model: 202 / Pattern: 65 EC and FC model use PAL-
BGDHI (composite signal)
(1) Input the Video signal: 7 color Bar signal into AV3.
(2) Set the PSM to Vivid mode in the Picture menu
(2) Set the PSM to Vivid mode in the Picture menu
(3) Press INSTART key on R/C for adjustment.
(4) Press the
(4) Press the
G
(Vol. +) key operate to set, then it becomes
automatically.
Auto-RGB OK means completed adjustment
Auto-RGB OK means completed adjustment
ADJUSTMENT INSTRUCTION
<Fig. 1> Color Bar Signal
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