Read Sharp LC-121M2E (serv.man3) Service Manual online
14
LC-121M2E
LC-150M2E
LC-150M2E
LC-121M2E
LC-150M2E
LC-150M2E
16
BELL f0 adjustment
1. Connect the oscilloscope to
1. Adjust BELL f0 so as to minimize the
TP2851.
a-level.
17
Brightness adjustment
1. Input the standard colour bar signal
1. Adjust SECAM BRIGHTNESS, and
(SECAM)
(the same pattern as that of E-10CH)
adjust the black level of G output to
of SECAM into AV1.
DC 1.5
±
0.05V.
2. Connect oscilloscope to TP821
(IC803, pin7, G output).
18
Unicolor adjustment
1. Input the standard colour bar signal
1. Adjust SECAM UNICOLOR, and
(SECAM)
(the same pattern as that of E-10CH)
adjust so as to get 100% white-black
of SECAM into AV1.
level video component equal to 2.3
±
2. Connect oscilloscope to TP821
0.05Vp-p.
(IC803, pin7, G output ).
19
Colour level adjustment
1. Input the standard colour bar signal
Adjust SECAM COLOR so as to get
(SECAM)
(the same pattern as that of E-10CH)
the colour bar signal blue amplitude
of SECAM into AV1.
(black level - peak level) equal to 2.0V
2. Connect the oscilloscope to TP820
±
0.05Vp-p.
(B output).
20
Tint adjustment
1. Input the standard colour bar signal
1. Adjust SECAM TINT so as to get the
(SECAM)
(the same pattern as that of E-10CH)
colour bar signal magenta amplitude
of SECAM 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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