LG KT-17LZ21, Service Manual

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1. Application Object
This instruction is for the application to the LCD TV.
2. Notes
(1) This set uses an adapter, so connect the adapter and the
set correctly before adjustment.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed in the circumstance of
25°C±5°C of temperature and 65±10% of relative humidity
if there is no specific designation.
(4) The input voltage of the receiver must keep 100~220V,
50/60Hz in adjusting.
(5) The set must be operated for 15 minutes preliminarily
before adjustment if there is no specific designation.
[ ‘Heat Run’ must be performed with the full white signal or TV
noise signal in the internal part of the set.
[ The time for ‘Heat Run’ can be changed owing to production
plan.
3. PC Input Mode Adjustment
3-1. Required Test Equipment
(1) MSPG-925LTH or A pattern generator ;Gray pattern of 16
tones
(2) A adjustment communicator.
3-2. Preparation for Adjustment
(1) Perform ‘Heat Run’ for more than 15 minutes in white
pattern.
(2) Connect the signal of pattern generator with LCD TV.
3-3. Auto Gray Adjustment
(1) Apply the gray signal of XGA(1024X768) 16 tones by
using MSPG-925LTH.
(2) In Service menu mode,adjust the Auto gay from 0 to 1 by
using Vol(+) button.
ADJUSTMENT INSTRUCTION