Read Sharp LC-121M2E (serv.man3) Service Manual online
16
LC-121M2E
LC-150M2E
LC-150M2E
LC-121M2E
LC-150M2E
LC-150M2E
5
Brightness adjustment
1. From SG, input the 100% white colour
Adjust DVD PAL BRIGHTNESS, and
(PAL)
bar signal of PAL into conponent
adjust the black level of G output so
terminal.
as to get DC 1.5
±
0.05V.
2. Connect oscilloscope to TP821
(IC803, pin7, G output).
6
Unicolor adjustment
1. From SG, input the 100% white colour
Adjust DVD PAL UNICOLOR, and
(PAL)
bar signal of PAL into conponent
adjust so as to get 100% white-
terminal.
black level video component equal
2. Connect oscilloscope to TP820
to 2.3
±
0.05Vp-p.
(IC803, pin8, B output).
7
Colour level adjustment
1. From SG, input the 100% white colour
Adjust DVD PAL COLOR so as to get
(PAL)
bar signal of PAL into conponent
the colour bar signal blue amplitude
terminal.
(black level - peak level) equal to
2. Connect the oscilloscope to TP820
2.8V
±
0.05Vp-p.
(B output).
8
Tint adjustment
1. From SG, input the 100% white colour
Adjust DVD PAL TINT so as to get
(PAL)
bar signal of PAL into conponent
the colour bar signal magenta amplitude
terminal.
(black level - peak level) equal to
2. Connect the oscilloscope to TP820
2.3V
±
0.05Vp-p.
(B output).
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