Read Sharp LC-121M2E (serv.man3) Service Manual online
13
LC-121M2E
LC-150M2E
LC-150M2E
LC-121M2E
LC-150M2E
LC-150M2E
12
Brightness adjustment
1. Input the standard colour bar signal
1. Adjust PAL BRIGHTNESS, and
(PAL)
of PAL into AV1.
adjust the black level of G output
2. Connect oscilloscope to TP821
so as to get DC 1.5
±
0.05V.
(IC803, pin7, G output).
13
Unicolor adjustment
1. Input the standard colour bar signal
1. Adjust PAL UNICOLOR, and adjust
(PAL)
of PAL into AV1.
so as to get 100% white-black level
2. Connect oscilloscope to TP821
video component equal to 2.3
±
0.05
(IC803, pin7 , G output ).
Vp-p.
14
Colour level adjustment
1. Input the standard colour bar signal
Adjust PAL SCOLOR so as to get the
(PAL)
(the same pattern as that of E-12CH)
colour bar signal blue amplitude
of PAL into AV1.
(black level - peak level) equal to 2.0V
2. Connect the oscilloscope to TP820
±
0.05Vp-p.
(B output).
15
Tint adjustment
1. Input the standard colour bar signal
1. Adjust PAL TINT so as to get the
(PAL)
(the same pattern as that of E-12CH)
colour bar signal magenta amplitude
of PAL into AV1.
(black level-peak level) equal to 1.7V
2. Connect the oscilloscope to TP820
±
0.05Vp-p.
(B output).
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