Alignment Instructions - Prima LC-20S3 Service Manual

Alignment instructions

1. Test equipment
PM5518 (Video signal generator)
K-7253 (VGA signal generator)
CA210 (White balancer)
2. The alignment flow chart (see below figure)
Written N101 and N304
Production of main board and TV board on the
Check the main board and supply power board
Combined test for general assembly and aging
ADC correction and white balance adjustment
Connect to central signal source; check if various
TV functions (station skipping, modulate quantity
control etc), check if the output of earphone and
speaker are normal.
Input AV/S signal and HDTV signal; check various
functions under AV/S terminal
Input VGA signal and check if display is normal in
the state of PC and various functions (analog
quantity control, line/field center etc.)
Input YPbPr/YCbCr signal, check the screen display is normal in
the various channel, and various functions (analog quantity
control, line/field center etc.)
Check accessories and then packing
Fig.1 Flow process of alignment
line.
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