A/D Adjustment (Component); A/D Adjustment (Rgb) - Sony LMD-2140MD Service Manual

2-3. A/D Adjustment (COMPONENT)

1. Input the 575/50I 100% 8 color bar COMPONENT
signal to the LMD-2140MD.
2. Press the COMPONENT switch to accept the COM-
PONENT input signal.
3. Enter the Service menu, then select SIG → SIGNAL
LEVEL → AUTO ADJ. Perform the following
automatic adjustments.
. Y LEVEL
. PB LEVEL
. PR LEVEL
. Y OFFSET
. PB OFFSET
. PR OFFSET
4. Confirm that the A/D AUTO ADJ has terminated
normally and the monitor screen is normally displayed.
5. Perform the adjustments of items 1-2 to 1-4 in table 1
shown below by repeating the above described
procedures.
However, before performing AUTO ADJ, adjust the
COMPONENT level or NTSC SETUP appropriately
according to the respective conditions described in
table 1.
COMPONENT selection input
1-1 575/50I 100% 8 color bar signal
Y/G LEVEL
PB/B LEVEL Conditions :
PR/R LEVEL COMPONENT LEVEL No specific conditions
Y/G OFFSET NTSC SETUP No specific conditions
PB/B OFFSET
PR/R OFFSET
1-2 480/60I BETA0 100% 8 color bar signal
Y/G LEVEL
PB/B LEVEL Conditions :
PR/R LEVEL COMPONENT LEVEL BETA 0
Y/G OFFSET NTSC SETUP No specific conditions
PB/B OFFSET
PR/R OFFSET
1-3 480/60I BETA7.5 100% 8 color bar signal
Y/G LEVEL
PB/B LEVEL Conditions :
PR/R LEVEL COMPONENT LEVEL BETA 7.5
Y/G OFFSET NTSC SETUP No specific conditions
PB/B OFFSET
PR/R OFFSET
1-4 1080/60I 100% 8 color bar signal
Y/G LEVEL
PB/B LEVEL Conditions :
PR/R LEVEL COMPONENT LEVEL No specific conditions
Y/G OFFSET NTSC SETUP No specific conditions
PB/B OFFSET
PR/R OFFSET
Table 1
2-2

2-4. A/D Adjustment (RGB)

1. Input the 480/60I 100% 8 color bar RGB signal to the
LMD-2140MD.
2. Press the RGB switch to accept the RGB input signal.
3. Enter the Service menu, then select SIG → SIGNAL
LEVEL → AUTO ADJ. Perform the following
automatic adjustments.
. Y LEVEL
. PB LEVEL
. PR LEVEL
. Y OFFSET
. PB OFFSET
. PR OFFSET
4. Confirm that the A/D AUTO ADJ has terminated
normally and the monitor screen is normally displayed.
5. Perform the adjustment of item 1-6 in table 2 shown
below by repeating the above described procedures.
RGB selection input
1-5 480/60I RGB 100% 8 color bar signal
Y /G LEVEL
PB/B LEVEL
PR/R LEVEL
Y/G OFFSET
PB/B OFFSET
PR/R OFFSET
1-6 1080/60I RGB 100% 8 color bar signal
Y /G LEVEL
PB/B LEVEL
PR/R LEVEL
Y/G OFFSET
PB/B OFFSET
PR/R OFFSET
Table 2
Conditions :
No specific conditions
Conditions :
No specific conditions
LMD-2140MD