Philips 20MC4304, Service Manual

Page: 205 / 316

1-7-2 T1102EA
2. Setting for CONTRAST, COLOR,
TINT, V-TINT and SHARP Data
Values
General
1. Enter the Service mode. (See page 1-7-1.)
2. Press [PICTURE] button on the service remote
control unit. Display changes “BRT,” “CNT,” “COL,”
“TNT,” “V-TNT,” and “SHP” cyclically when [PICTURE]
button is pressed.
CONTRAST (CNT)
1. Press [PICTURE] button on the service remote
control unit. Then select “CONTRAST (CNT)”
display.
2. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the value of “CONTRAST
(CNT)” becomes 84.
COLOR (COL)
1. Press [PICTURE] button on the service remote
control unit. Then select “COLOR (COL)” display.
2. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the value of “COLOR (COL)”
becomes 58.
TINT (TNT)
1. Press [PICTURE] button on the service remote
control unit. Then select “TINT (TNT)” display.
2. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the value of “TINT (TNT)”
becomes 56.
V-TINT (V-TNT)
1. Press [PICTURE] button on the service remote
control unit. Then select “V-TINT (V-TNT)” display.
2. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the value of “V-TINT (V-TNT)”
becomes 56.
SHARP (SHP)
1. Press [PICTURE] button on the service remote
control unit. Then select “SHARP (SHP)” display.
2. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the value of “SHARP (SHP)”
becomes 46.
Note: BRIGHT data value does not need to be
adjusted at this moment.
3. C-Trap Adjustment
Purpose: To get minimum leakage of the color signal
carrier.
Symptom of Misadjustment: If C-Trap Adjustment is
incorrect, stripes will appear on the screen.
Note: TP1301(B-OUT) --- Main CBA
1. Connect oscilloscope to TP1301.
2. Input a color bar signal from RF input.
Enter the Service mode. (See page 1-7-1.)
3. Press [0] button on the remote control unit and
select C-TRAP mode. (Fig. 3)
4. Press [CH.
o
/
p
] buttons on the remote control
unit so that the carrier leakage B-Out (3.58 MHz)
value becomes minimum on the oscilloscope.
Test Point Adj. Point Mode Input
TP1301
(B-OUT)
[CH.
o
/
p
]
buttons
--- Color Bar
Tape M. EQ. Spec.
---
Oscilloscope
Pattern Generator
---
Figure
Fig. 2
minimum