FUNAI TVD-A2104PT, Service Manual

Page: 23 / 113

1-7-3 T6100EA
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: Q501 Base (B-Out)--- CRT CBA
1. Connect Oscilloscope to Q501(Base).
2. Input a color bar signal from RF (or Ext.) input.
Enter the Service mode. (See page 1-7-1.)
3. Press [0] button on the remote control unit and
select C-TRAP mode.
4. Press [CH
o
/
p
] buttons on the remote control unit
so that the carrier leakage B-Out (4.43MHz) value
becomes minimum on the oscilloscope.
5. Turn the power off and on again.
4. SECAM Black Level Adjustment
Purpose: To set Black Level of the SECAM signal R-
Y/B-Y to Ref. level.
Symptom of Misadjustment: If Black Level of the
SECAM signal R-Y/B-Y is incorrect, the picture is blu-
ish or reddish in grayscale compared with PAL signal.
Note: CN303 --- Main CBA
1. Degauss the CRT and allow CRT to operate for 20
minutes before starting the alignment.
2. Input the SECAM Gray Scale signal from Ext.
input.
3. Enter the service mode. (See page 1-7-1.)
4. To enter the C/D/S mode, press [VOL
p
] on the
remote control unit.
5. To select SBR (SECAM Black Level R-Y), press [6]
button on the remote control unit.
6. Press [CH
o
/
p
] buttons to adjust Y signal to the
black ref. level at CN303(1 pin).
7. To select SBB (SECAM Black Level B-Y), press [7]
button on the remote control unit.
8. Press [CH
o
/
p
] buttons to adjust Y signal to the
black ref. level at CN303(1 pin).
Test point Adj. Point Mode Input
Q501 Base
(B-OUT)
CH
o
/
p
buttons
RF
(or Ext.)
Color Bar
Tape M. EQ. Spec.
---
Oscilloscope,
Pattern Generator
200mVp-p Max.
Figure
minimum
Fig. 1
Test
point
Adj. Point Mode Input
CN303
(1 pin)
CH
o
/
p
buttons
Ext.
SECAM
Gray
Scale
Tape M. EQ. Spec.
---
Pattern Generator,
Analog Oscilloscope (unus-
able Digital Oscilloscope)
---
5mV/Div (10:1 Prove)
Y Signal
1H
1H
1H
Black REF. Level
Fig. 4