Disney DT1300-C Service Manual page 18

8. C-Trap Adjustment
Purpose: To get minimum leakage of the color signal carrier.
Symptom of Misadjustment: If C-Trap Adjustment is
incorrect, stripes will appears on the screen.
Test Point Adj. Point
D316 (Cathode)
(Blue) CHo / p
TP300
(GND)
Tape
--- Oscilloscope
Note: TP300 (GND), D316 (Cathode) --- MAIN CBA
Use Service remote control unit.
1. Connect Oscilloscope to D316 (Cathode) and
TP300 (GND).
2. Enter the Service mode. (See Page 5-1) Receive
color bar signal from RF Input.
3. Press "0" button on the Service remote control unit
and select C-TRP Mode.
4. Press "CH o / p" buttons on the Service remote con-
trol unit so that the display will change "0", " 1 ", " 2 "
and " 3 ". Choose display "0", " 1 ", " 2 " or " 3 " when
B-Out (3.58MHz) value becomes minimum on the os-
cilloscope reading.
5. Turn the power off and on again. (Main power but-
ton on the TV unit.)
9. V. Size Adjustment
Purpose: To obtain correct vertical width of screen image.
Symptom of Misadjustment: If V.Size is incorrect, vertical
size of image on the screen may not be properly displayed.
Test Point Adj. Point
Screen Control
CHo / p
---
buttons [ V-S ]
Mode
Tape M. EQ.
--- Monoscope
Note: Use service remote control unit.
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode. (See page 5-1)
3. Receive the Monoscope Pattern.
4. Press " 9 " button on the Service remote control unit
and select " V-S " mode. (Display changes " V-S "
and " V-P " cyclically when " 9 " button is pressed).
Mode Input
Color
RF
buttons Bar
M. EQ. Spec.
---
Mode Input
Mono-
RF
scope
Spec.
90±5%
5. Press "CH o / p" buttons on the Service remote
control unit so that the monoscope pattern will be
90±5% of display size and the circle is round.
6. Turn the power off and on again. (Main power but-
ton on the TV unit.)
10. V. Position Adjustment
Purpose: To obtain correct vertical width of screen
image.
Symptom of misadjustment: If V. Position is incor-
rect, vertical height of image on the screen may not be
properly displayed.
Test Point Adj. Point
--- Screen Control
CHo / p
buttons [ V-P ]
Tape
--- Monoscope
Note: Use Service remote control unit
1. Operate the unit for at least 20 minutes.
2. Enter the Service Mode. (See page 5-1)
3. Receive the Monoscope Pattern.
4. Press " 9 " button on the Service remote control unit
and select " V-P " mode. (Display change " V-S " and
" V-P " cyclically when " 9 " button is pressed).
5. Press "CH o / p" buttons on the Service remote
control unit so that the top and bottom of the mono-
scope pattern will be equal of each other.
6. Turn the Power off and on again. (Main power but-
ton on the TV unit.)
5-4
Mode
RF
Mode
M. EQ. Spec.
90±5%
Input
Mono-
scope
L6310EA