Sharp LC-121M2U Service Manual page 15

LC-121M2U
LC-150M2U
16 BELL f0 adjustment
17 Brightness adjustment
(SECAM)
18 Unicolor adjustment
(SECAM)
19 Color level adjustment
(SECAM)
20 Tint adjustment
(SECAM)
1. Connect the oscilloscope to
TP2851.
1. Input the standard color bar signal
(the same pattern as that of E-10CH)
of SECAM 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-10CH)
of SECAM 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-10CH)
of SECAM into AV1.
2. Connect the oscilloscope to TP820
(B output).
1. Input the standard color bar signal
(the same pattern as that of E-10CH)
of SECAM into AV1.
2. Connect the oscilloscope to TP820
(B output).
15
1. Adjust BELL f0 so as to minimize the
a-level.
1. Adjust SECAM BRIGHTNESS, and
adjust the black level of G output to
DC 1.5±0.05V.
1. Adjust SECAM UNICOLOR, and
adjust so as to get 100% white-black
level video component equal to 2.3±
0.05Vp-p.
Adjust SECAM COLOR so as to get
the color bar signal blue amplitude
(black level - peak level) equal to 2.5V
±0.05Vp-p.
1. Adjust SECAM TINT so as to get
the color bar signal magenta amplitude
(black level - peak level) equal to 2.0V
±0.05Vp-p.
LC-121M2U
LC-150M2U