Ntsc Video Input; Ntsc Rf Input - Sony KP-FS57M31 Service Manual

5-1-2. NTSC Video Input

1. Enter the NTSC video color bar (White & color 75%) signal.
2. Enter the service mode, and set respective items as follows.
3. Measure waveform, and each item is adjusted to become the
following figure.
4. Press " (SWAP)" button on the commander, when the left
screen and the right screen are changed.
5. After adjustment finished, press "
ton to write the data to the NVM.
(i) SUB CONTRAST
Condition :
Category
SAJ 00
02
19
Adjusting Parameter :
LEFT screen : YCT
RIGHT screen : SYC
VR1
VR1 – VR2 = 1.73 ± 0.07 Vp-p
(ii) SUB HUE/SUB COL
Condition :
Category
SAJ 02
16
Adjusting Parameter :
LEFT screen : YCT
RIGHT screen : SYC
VB1 VB3
VB2
VB1 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
(MUTE)" + "-" but-
Item Data
PIC 3F
COL 00
PIO 00
08 YOL
08 YOL
VR2
GND
Item Data
COL 22
HUO 07
0A COL
00 TNT
0A COL
00 TNT
VB4

5-1-3. NTSC RF Input

1. Enter the NTSC RF color bar (White & color 75%) signal.
(i) SUB CONTRAST
Condition :
Category
SAJ
Adjusting Parameter :
LEFT screen
RIGHT screen :
(ii) SUB HUE/SUB COL
VR1
VR1 – VR2 = 1.73 ± 0.07 Vp-p
Condition :
Category
SAJ
Adjusting Parameter :
LEFT screen
RIGHT screen :
VB1
VB1 = VB4 ± 70 mV
VB2 = VB3 ± 70 mV
– 56 –
KP-FS57M31/M61/M90/M91
Item Data
00 PIC 3F
02 COL 00
19 PIO 00
: YCT 04 SCT
SYC 04 SCT
VR2
GND
Item Data
02 COL 22
16 HUO 07
: YCT 03 SCL
00 TNT
SYC 03 SCL
00 TNT
VB4
VB3
VB2
RM-997