Service manual

16
LC-20VM2
LC-121M2E
LC-150M2E
6-6-4. SECAM signal adjustment
Adjustment Adjustment conditions Adjustment method
1 BELL f0 adjustment 1. Connect the oscilloscope to 1. Adjust BELL f0 so that the level of
(BELL F0) TP2851. a becomes the minimum.
2 Brightness adjustment 1. Input the SECAM standard color bar 1. Adjust SECAM BRIGHTNESS, and
(SECAM BRIGHTNESS) to AV1. adjust the black level of G output to
2. Connect oscilloscope to TP821 DC 0.35±0.05V.
(IC316, pin7, G output).
3 Unicolor adjustment 1. Input the SECAM standard color bar 1. Adjust SECAM UNICOLOR so as to
(SECAM UNICOLOR) to AV1. get 2.3±0.05Vp-p between the 100%
2. Connect oscilloscope to TP821 white and GND.
(IC316, pin7, G output).
4 Color level adjustment 1. Input the SECAM standard color bar 1. Adjust SECAM COLOR so as to get
(SECAM COLOR) to AV1. the color bar signal blue amplitude
2. Connect oscilloscope to TP820 (GND - peak level) equal to 1.8V ±
(B output). 0.1Vp-p.
5 Tint adjustment 1. DAC value is set in "58".
(SECAM TINT)
6-6-5. Data copy
Adjustment Adjusting conditions Adjusting method
1 Data copy 1. A sound volume key is pushed. 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.