Sharp LC-20VM2E Service Manual page 15

LC-121M2E
LC-150M2E
6-6-4. SECAM signal adjustment
Adjustment
1 BELL f0 adjustment
(BELL F0)
2 Brightness adjustment
(SECAM BRIGHTNESS)
3 Unicolor adjustment
(SECAM UNICOLOR)
4 Color level adjustment
(SECAM COLOR)
5 Tint adjustment
(SECAM TINT)
6-6-5. Data copy
Adjustment
1 Data copy
Adjustment conditions
1. Connect the oscilloscope to
TP2851.
1. Input the SECAM standard color bar 1. Adjust SECAM BRIGHTNESS, and
to AV1.
2. Connect oscilloscope to TP821
(IC316, pin7, G output).
1. Input the SECAM standard color bar 1. Adjust SECAM UNICOLOR so as to
to AV1.
2. Connect oscilloscope to TP821
(IC316, pin7, G output).
1. Input the SECAM standard color bar 1. Adjust SECAM COLOR so as to get
to AV1.
2. Connect oscilloscope to TP820
(B output).
Adjusting conditions
1. A sound volume key is pushed.
15
Adjustment method
1. Adjust BELL f0 so that the level of
a becomes the minimum.
adjust the black level of G output to
DC 0.35±0.05V.
get 2.3±0.05Vp-p between the 100%
white and GND.
the color bar signal blue amplitude
(GND - peak level) equal to 1.8V ±
0.1Vp-p.
1. DAC value is set in "58".
Adjusting method
1. If it is displayed with SEND and
displayed with WAIT, completion
(Data copies the adjustment value
of the PAL item on each item of N443,
PAL-M.
LC-20VM2E