Sharp LC-121M2U Service Manual page 14

LC-121M2U
LC-150M2U
12 Brightness adjustment
(PAL)
13 Unicolor adjustment
(PAL)
14 Color level adjustment
(PAL)
15 Tint adjustment
(PAL)
1. Input the standard color bar signal
of PAL into AV1.
2. Connect oscilloscope to TP821
(IC803, pin7, G output).
1. Input the standard color bar signal
of PAL into AV1.
2. Connect oscilloscope to TP821
(IC803, pin7 , G output ).
1. Input the standard color bar signal
(the same pattern as that of E-12CH)
of PAL into AV1.
2. Connect the oscilloscope to TP820
(B output).
1. Input the standard color bar signal
(the same pattern as that of E-12CH)
of PAL into AV1.
2. Connect the oscilloscope to TP820
(B output).
14
1. Adjust PAL BRIGHTNESS, and
adjust the black level of G output
so as to get DC 1.5±0.05V.
1. Adjust PAL UNICOLOR, and adjust
so as to get 100% white-black level
video component equal to 2.3±0.05
Vp-p.
Adjust PAL SCOLOR so as to get the
color bar signal blue amplitude
(black level - peak level) equal to 2.5V
±0.05Vp-p.
1. Adjust PAL TINT so as to get the color
bar signal magenta amplitude (black
level-peak level) equal to 2.0±
0.05Vp-p.
LC-121M2U
LC-150M2U