Sony KP-FWS57M90, Service Manual

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KP-FWS57M90
RM-1007
5-1-4. NTSC Video Input (Sub Picture)
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 “ (MUTE)” + “
-
” button
to write the data to the NVM.
(i) SUB CONTRAST
Condition :
Adjusting Parameter :
RIGHT : YCTS 00 YLEV
(ii) SUB COL/SUB HUE (Sub Picture)
Condition :
Adjusting Parameter :
RIGHT : YCTS 01 CLEV
YCTS 04 SHUE
GND
VG2
VG1
Main Sub
VG1 – VG2 = 1.60
±
0.03 Vp-p
VB4
VB3 VB1
VB2
Main Sub
VB1 = VB4
±
70 mV
VB2 = VB3
±
70 mV
2
If still “Sub HUE” can not adjust,
Change HUOF data from “2” to “1”.
Repeat (ii).
If “Sub HUE” can adjust, write “1” as HUOF data for
each picture modes (Dynamic, Standard, Hi-fine and
Personal).
3
If still “Sub HUE” can not adjust,
Change HUOF data from “1” to “0”.
Repeat (ii).
If “Sub HUE” can adjust, write “0” as HUOF data for
each picture modes (Dynamic, Standard, Hi-fine and
Personal).
Category Item Data
PIC 00 PIC 100
01 COL 0
05 PIOF 0
MID2 02 BCOL 0 (TWIN 5-->0)
MCP 02 RON 0
03 GON 1
04 BON 0
15 ABLT 0 (TWIN 5-->0)
YCTS 02 SCON 7
Category Item Data
PIC 01 COL 56
COLR 01 HUOF 3 (TWIN Mode)
MCP 02 RON 0
03 GON 0
04 BON 1
YCTS 03 SCOL 7