Read Sharp LC-20VM2E (serv.man2) Service Manual online
16
LC-20VM2E
LC-121M2E
LC-150M2E
LC-150M2E
6-6-6. N443, PAL-M signal adjustment (Actual adjustment manipulation is unnecessary because PAL
data is copied by the data copy manipulation of the former term.
Adjustment
Adjusting conditions
Adjusting method
1
Brightness adjustment
1. Input the NTSC standard color bar
1. Adjust N443 BRIGHTNESS, and
(N443, PAL-M
to AV1.
adjust the black level of G output so
BRIGHTNESS Item)
2. Connect oscilloscope to TP821
as to get DC 0.35
±
0.05V.
(IC316, pin7, G output).
2
Unicolor adjustment
1. Input the NTSC standard color bar
1. Adjust TV UNICOLOR so as to
(N443, PAL-M
to AV1.
get 2.3
±
0.1Vp-p between the 100%
UNICOLOR Item)
2. Connect oscilloscope to TP821
white and GND.
(IC316, pin7, G output).
3
Color level adjustment
1. Input the NTSC standard color bar
1. Adjust N443 SCOLOR so as to get
(N443, PAL-M
to AV1.
the color bar signal blue amplitude
SCOLOR Item)
2. Connect oscilloscope to TP820
(GND level - peak level) equal to
(IC316, pin1, B output).
1.8V
±
0.1Vp-p.
4
Tint adjustment
1. DAC value is set in "62".
(N443, PAL-M TINT Item)
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