Ntsc Yc Mode Adjustment; Data Copy; Phase Adjustment - Sony BKM-142HD Maintenance Manual

2-5. NTSC YC Mode Adjustment

1. Input the NTSC YC color bar signal into INPUT 4, 5.
(100% White Ref. 75% Saturation)
2. Select 04 CH.

2-5-1. Data Copy

1. Select 01 CH.
2. Read the following adjustment data at the BKM-127W
menu of the MAINTENANCE menu.
CLP W
BGP W
F0
3. Select 04 CH.
4. Set the following adjustment data to the same value as
the NTSC mode data read at step 2 at the BKM-127W
menu of the MAINTENANCE menu.
CLP W
BGP W
F0
2-8

2-5-2. Phase Adjustment

Note 1: ON/OFF of ACC should be performed with BKM-
127W menu of MAINTENANCE menu.
Note 2: The following adjustment menus are below the
BKM-127W menu of the MAINTENANCE menu.
SUB PHASE
ACC PHASE
R–Y PHASE
1. Input the NTSC YC color bar signal whose R–Y signal
has been turned off.
2. Turn OFF ACC.
3. Connect the oscilloscope to TP421 of the BW board.
4. Adjust the SUB PHASE data so that the TP421
waveform becomes flat.
5. Turn ON ACC.
6. Adjust the ACC PHASE data so that the TP421
waveform becomes flat.
TP421
Fig. 2-16.
7. Input the NTSC YC color bar signal whose R–Y signal
has been turned off.
8. Connect the oscilloscope to TP471 of the BW board.
9. Adjust the R–Y PHASE data so that the TP471
waveform becomes flat.
TP471
H Period
Fig. 2-17.
Below 10mV
Below 10mV
BKM-120D/127W/129X/142HD