Sharp LC-121M2E Service Manual page 14

LC-121M2E
LC-150M2E
BELL fO adjustment
17 | Brightness adjustment
(SECAM)
18 | Unicolor adjustment
(SECAM)
19 | Colour level adjustment
(SECAM)
Tint adjustment
(SECAM)
. Connect the oscilloscope to
TP2851.
1. Adjust BELL f0 so as to minimize the
a-level.
. Input the standard colour bar signal
(the same pattern as that of E-10CH)
of SECAM into AV1.
. Connect oscilloscope to TP821
(IC803, pin7, G output).
1. Adjust SECAM BRIGHTNESS, and
adjust the black level of G output to
DC 1.5+0.05V.
. Input the standard colour bar signal
(the same pattern as that of E-10CH)
of SECAM into AV1.
. Connect oscilloscope to TP821
(1C803, pin7, G output ).
1. Adjust SECAM UNICOLOR, and
adjust so as to get 100% white-black
level video component equal to 2.3£
. Input the standard colour bar signal
(the same pattern as that of E-10CH)
of SECAM into AV1.
. Connect the oscilloscope to TP820
(B output).
Adjust SECAM COLOR so as to get
the colour bar signal blue amplitude
(black level - peak level) equal to 2.0V
+0.05Vp-p.
. Input the standard colour bar signal
(the same pattern as that of E-10CH)
of SECAM into AV1.
. Connect the oscilloscope to TP820
(B output).
1. Adjust SECAM TINT so as to get the
colour bar signal magenta amplitude
(black level-peak level) equal to 1.7V
+0.05Vp-p.
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